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NARDA NBM-550 Operating Manual

Other manuals for NBM-550: Operating Manual
Manual is about: Broadband Field Meter

Summary of NBM-550

  • Page 1

    Nbm-550 narda broadband field meter operating manual distributed by: air-met scientific pty ltd work with confidence air-met sales/service p: 1800 000 744 f: 1800 000 774 e: sales@airmet.Com.Au air-met rental p: 1300 137 067 e: hire@airmet.Com.Au w: www.Airmet.Com.Au.

  • Page 2

    Narda safety test solutions gmbh sandwiesenstraße 7 72793 pfullingen, germany ® names and logo are registered trade- marks of narda safety test solutions gmbh and l3 communications holdings, inc. – trade names are trademarks of the owners. © 2015 order no.: 2401/98.21 version: 06/15.03, a ... Previo...

  • Page 3: Contents

    Narda nbm-550 i contents 1 useful information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 measuring electromagnetic fields . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 about the nbm-550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 4

    Contents ii nbm-550 narda 3.2 instrument overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 nbm-550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 5

    Contents narda nbm-550 iii changing the units format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 setting the date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 changing the gps display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 selecting ...

  • Page 6

    Contents iv nbm-550 narda 5.10 measuring with a correction frequency . . . . . . . . . . . . . . . . . . . 62 6 measurements with the nbm-550 and ehp-50 . . . . . . . . . . . . . . . . 63 6.1 general information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 ehp-50 versions s...

  • Page 7

    Contents narda nbm-550 v setting the recording parameters . . . . . . . . . . . . . . . . . . . . . . . . 83 starting / stopping the recording. . . . . . . . . . . . . . . . . . . . . . . . . 84 7.4 managing result data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 using the m...

  • Page 8

    Contents vi nbm-550 narda page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 10.5 data logger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 10.6 memory manager. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 9

    Contents narda nbm-550 vii 13 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 13.1 nbm-550. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 13.2 probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 10

    Contents viii nbm-550 narda.

  • Page 11: Useful Information

    Narda nbm-550 1 1 useful information this chapter contains basic information about measuring electromagnetic fields, about using the nbm-550, and about the structure of this operating manual. 1.1 measuring electromagnetic fields (page 2) 1.2 about the nbm-550 (page 2) 1.3 about the ehp-50 analyzer (...

  • Page 12: 1.1

    1 useful information 2 nbm-550 narda 1.1 measuring electromagnetic fields in today’s world, practically everyone lives and works in an environment surrounded by technical equipment that generates electromagnetic fields. Our recognition of the problems associated with such fields and our depth of inf...

  • Page 13: Applications

    1.3 about the ehp-50 analyzer (option) narda nbm-550 3 applications the nbm-550 makes precision measurements for human safety purposes, particularly in workplace environments where high electric or magnetic field strengths are likely. It can also be used to demonstrate the electromagnetic compatibil...

  • Page 14: 1.4

    1 useful information 4 nbm-550 narda with the nbm-550 as a convenient control and display unit. Even so, the ehp-50 still performs the measurement by itself and transfers the results to the nbm-550 in digital form via an optical cable. Note: the nbm-550 only supports the functions of the ehp-50 for ...

  • Page 15: Characters and Symbols Used

    1.4 about this operating manual narda nbm-550 5 characters and symbols used various elements are used in this operating manual to indicate special meanings or particularly important passages in the text. Symbols and terms used in warnings according to the american national standard ansi z535.6- 2006...

  • Page 16: Terminology

    1 useful information 6 nbm-550 narda symbols and marks used in this document terminology ! Important instruction indicates an instruction that must be followed to avoid danger. ✓ requirement indicates a requirement that must be met before the next instruction can be carried out, e.G. ✓ the instrumen...

  • Page 17: Safety Instructions

    Narda nbm-550 7 2 safety instructions this chapter contains important instructions on how to use the nbm-550 safely. Please therefore read this chapter carefully and follow the instructions closely. 2.1 using this operating manual (page 8) 2.2 proper use (page 8) 2.3 improper use (page 8) 2.4 danger...

  • Page 18: 2.1

    2 safety instructions 8 nbm-550 narda 2.1 using this operating manual carefully read this entire operating manual before you start using the instrument. Keep this operating manual so that it is available to everyone who uses the instrument, and ensure that this operating manual is with the instrumen...

  • Page 19: 2.4

    2.4 dangers from electromagnetic fields narda nbm-550 9 2.4 dangers from electromagnetic fields strong fields very high field strengths can occur in the vicinity of some radiation sources. Do not cross or ignore safety barriers or markings. Persons with electronic implants (e.G. Heart pacemakers) mu...

  • Page 20: 2.5

    2 safety instructions 10 nbm-550 narda 2.5 dangers when handling rechargeable batteries when handled improperly, rechargeable batteries can overheat, explode, or ignite. Only use the nbm-550 with nimh rechargeable batteries (aa, mignon). Do not use dry batteries. Do not replace individual batteries;...

  • Page 21: Preparing

    Narda nbm-550 11 3 preparing the nbm-550 for use this chapter describes all you need to do before starting to use the nbm-550. 3.1 unpacking (page 12) 3.2 instrument overview (page 16) 3.3 power supply nbm-550 (page 20) 3.4 power supply ehp-50 (page 23) 3.5 connecting the probe (page 24) 3.6 connect...

  • Page 22: 3.1

    3 preparing the nbm-550 for use 12 nbm-550 narda 3.1 unpacking packaging the packaging is designed to be re-used as long as it has not been damaged. Keep the original packaging and use it whenever the instrument needs to be shipped or transported. Items included check that all the following items ha...

  • Page 23: Unpacking The Probes

    3.1 unpacking narda nbm-550 13 unpacking the probes 1. Carefully open the foil bag to prevent damage to the probes. Use a pair of scissors to cut open the outer edge of the bag at the plug end of the probe. 2. Hold the probe by the plug body to remove it from the bag. 3. Place the probe in the appro...

  • Page 24: Equipping The Case

    3 preparing the nbm-550 for use 14 nbm-550 narda equipping the case you can use the case provided to store a wide range of optional accessories in addition to the items supplied. The figures below show the compartments in the case lid and case base. Case lid case base 1 test generator 2 probe 3 o/e ...

  • Page 25: Notice

    3.1 unpacking narda nbm-550 15 after transport and storage note: the instrument is not ready for use until it has reached a temperature within the operating range of -10 to +50 °c. Notice condensation on an instrument can lead to damage condensation can form on an instrument that has been stored at ...

  • Page 26: 3.2

    3 preparing the nbm-550 for use 16 nbm-550 narda 3.2 instrument overview nbm-550 figure 1 device overview nbm-550 1 3 4 5 2 6 8 7 6a 6b 6c 6d.

  • Page 27

    3.2 instrument overview narda nbm-550 17 1 probe connector socket 2 microphone 3 display 4 operating panel function keys used to select the menu functions shown on the display esc key used to exit from a menu / reset functions and measured values ok key used to open a menu or function / confirm a se...

  • Page 28: Probes

    3 preparing the nbm-550 for use 18 nbm-550 narda probes figure 2 overview of probes 9 10a 12 13 11 13a 13c 13e 13d 13b 10b.

  • Page 29

    3.2 instrument overview narda nbm-550 19 probe (various models available) 9 probe head 10 probe plug 10a probe with threaded coupling connector 10b probe with “push-pull” connector ehp-50 11 probe head 12 tripod bush 13 electrical and optical connections 13a optical connector 13b aux signal input fo...

  • Page 30: 3.3

    3 preparing the nbm-550 for use 20 nbm-550 narda 3.3 power supply nbm-550 the power supply is normally taken from the batteries provided. You can use the ac adapter / charger supplied as an alternative power source. Note: we do not recommend that you operate the instrument with the ac adapter / char...

  • Page 31: Charging The Batteries

    3.3 power supply nbm-550 narda nbm-550 21 charging the batteries if the device is probably not going to be used for several weeks, it should be recharged before being stored to avoid the possibility of deep discharge of the batteries. If storage is likely to be for a period of more than two months, ...

  • Page 32: Indicator

    3 preparing the nbm-550 for use 22 nbm-550 narda proper handling of rechargeable batteries observe the following precautions when handling rechargeable batteries: • always handle the batteries with care. • do not drop or damage the batteries or expose them to excessively high temperatures. • do not ...

  • Page 33: 3.4

    3.4 power supply ehp-50 narda nbm-550 23 3.4 power supply ehp-50 the ehp-50 analyzer is fitted with a fixed, non- exchangeable rechargeable battery which provides at least 9 hours of operation when fully charged. The battery is charged using the charger unit supplied. It takes approximately 6 hours ...

  • Page 34: Source

    3 preparing the nbm-550 for use 24 nbm-550 narda displaying the charge state and power source the charge state of the battery is shown upper left in the display during the measurement. The same symbols are used as in the charge state display for the nbm-550 (see “charge state and power source indica...

  • Page 35: Connector

    3.5 connecting the probe narda nbm-550 25 the data sheets of the nbm-550 and probes. These documents can also be downloaded from the narda web site on the internet at http://www.Narda-sts.Com . „ probe with “push-pull” connector connecting the probe ✓ the red mark on the probe plug (10) is pointing ...

  • Page 36: 3.6

    3 preparing the nbm-550 for use 26 nbm-550 narda disconnecting the probe undo the threaded coupling using your thumb and forefinger and then pull the probe upwards to release it. 3.6 connecting and setting up the ehp-50 the ehp-50 analyzer is connected using the optical cable supplied with it. Using...

  • Page 37: 3.7

    3.7 fitting the gps module narda nbm-550 27 3.7 fitting the gps module the gps receiver module is included in the option set as an accessory (see “ordering information” on page 133). It allows you to determine the exact position of the instrument using gps (global positioning system). Fitting the gp...

  • Page 38

    3 preparing the nbm-550 for use 28 nbm-550 narda.

  • Page 39: Getting Started

    Narda nbm-550 29 4 getting started this chapter describes how to switch on the nbm-550, the operating concept, and the initial settings. 4.1 switching on (page 30) 4.2 the nbm-550 operating concept (page 32) 4.3 making basic settings (page 35).

  • Page 40: 4.1

    4 getting started 30 nbm-550 narda 4.1 switching on now that you have prepared the instrument for use, you can switch it on. Press the on/off key to switch the instrument on. The instrument performs a self test. Self test the progress of the self test is displayed on the screen. The instrument is no...

  • Page 41: Ehp-50

    4.1 switching on narda nbm-550 31 ehp-50 if the ehp-50 is already switched on and connected to the nbm-550, the nbm-550 will detect it automatically and will switch to ehp-50 measurement mode when the switch on routine has completed. If you connect or switch on the ehp-50 after you have started the ...

  • Page 42: 4.2

    4 getting started 32 nbm-550 narda note: after connecting to the gps module, it can take up to 5 minutes for a position display to appear. The waiting time decreases with short-term switching off and on, i.E. When the satellite positions are only marginally changed. Gps reception may be impaired by ...

  • Page 43: The Menu Levels

    4.2 the nbm-550 operating concept narda nbm-550 33 the menu levels the nbm-550 operating concept is context sensitive. It only displays the functions that are possible based on the probe being used, the settings selected, and the menu that is open. Settings are divided into different levels to separ...

  • Page 44: The Sub-Menus

    4 getting started 34 nbm-550 narda the sub-menus select a sub-menu from the main menu and press the ok key to open the selected sub-menu. The example shows: data logger. The function levels select a function from the sub-menu and press the ok key to open the selected function. You can then make the ...

  • Page 45: 4.3

    4.3 making basic settings narda nbm-550 35 to simplify the description of the selection of a menu level or function, the menu and function names will be listed one after the other and separated by a slash. Example: to change the start time, open the timer start function (main/data logger/...). You c...

  • Page 46

    4 getting started 36 nbm-550 narda the following settings are possible: • 6/15/30/60 minutes : auto zero every 6/15/30/60 minutes • off : auto zero function disabled the default setting is 15 minutes . Changing the setting 1. Open the auto-zero interval function (main/ measurement settings/next/...)...

  • Page 47: Setting The Backlight

    4.3 making basic settings narda nbm-550 37 setting the backlight the display backlight is activated every time you press a key and switches off after a specified time to preserve battery power. The following settings are possible: • off : backlight disabled • 5/10/30/60 s : backlight switches off af...

  • Page 48: Changing The Units Format

    4 getting started 38 nbm-550 narda changing the units 1. Open the main menu. 2. Press the unit function key repeatedly until the desired units are displayed. Units are set in the following order: w/m 2 – mw/cm 2 – v/m – a/m – w/m 2 –... 3. Press the esc key. The display reverts to the measurement sc...

  • Page 49: Changing The Gps Display

    4.3 making basic settings narda nbm-550 39 tip: instead of making the setting manually, you can use the pc software supplied to synchronize the date and time. Setting the date and time 1. Open the clock function in the main menu. 2. Set the time format: – select the time format function, – use the a...

  • Page 50: Combination Probes

    4 getting started 40 nbm-550 narda selecting the field type and units for combination probes combination probes can measure e-fields and h-fields at the same time. If you are using a combination probe, you can select the field that is to be measured and the units that are to be shown in the lower ha...

  • Page 51: Locking The Keypad

    4.3 making basic settings narda nbm-550 41 locking the keypad to prevent inadvertent operation of any of the keys, you can lock the keypad. Locking the keypad press the two arrow keys ▲ / ▼ simultaneously. The message key lock is displayed. Unlocking the keypad press the two arrow keys ▲ / ▼ simulta...

  • Page 52

    4 getting started 42 nbm-550 narda.

  • Page 53: Measuring With The

    Narda nbm-550 43 5 measuring with the nbm-550 and hf probes this chapter describes how to use the nbm-550 in combination with hf probes for measurements. You can find information on how to use the ehp-50 lf analyzer in the chapter “measurements with the nbm-550 and ehp-50” on page 63. You can find a...

  • Page 54: 5.1

    5 measuring with the nbm-550 and hf probes 44 nbm-550 narda 5.1 avoiding measurement errors the measurement result can be falsified by external influences when measuring electromagnetic fields. Considerable measurement deviations can occur under certain circumstances, particularly when measuring low...

  • Page 55: Strong Low Frequency Fields

    5.1 avoiding measurement errors narda nbm-550 45 recommendation: try to avoid heating caused by direct sunlight during measurements with thermocouple probes. Consider an adequate settling time for stabilization of the probe in case of temperature changes. A settling time of about 15 minutes will ens...

  • Page 56: 5.2

    5 measuring with the nbm-550 and hf probes 46 nbm-550 narda 5.2 measuring in normal display mode the latest measurement results are displayed in normal mode. You can also display maximum and average values. Selecting the result type you can select the following result displays on the nbm-550: result...

  • Page 57: Freezing A Measured Value

    5.2 measuring in normal display mode narda nbm-550 47 selecting a result type press the result type key repeatedly until the desired result type is shown. Freezing a measured value press the hold key to freeze the measured value being displayed at the moment. Hold appears flashing in the display. Th...

  • Page 58

    5 measuring with the nbm-550 and hf probes 48 nbm-550 narda add voice comments (optional) you can add a spoken comment up to 30 s in length to the stored measured values. To do this, you must activate voice recording (default setting: deactivated). Note: the user is automatically asked for voice com...

  • Page 59: Setting The Averaging Time

    5.3 measuring the spatial average narda nbm-550 49 setting the averaging time you can set the time used to form the average for average and maxavg display types in the range 4 s to 30 min in 2 second steps. Setting the time and resolution 1. Open the averaging time function (main/measurement setting...

  • Page 60: Measuring Discrete Values

    5 measuring with the nbm-550 and hf probes 50 nbm-550 narda measuring discrete values ✓ you selected discrete as the spatial avg mode . 1. Press the spatial average key. Spatial measurement mode is displayed the result counter top left shows #0, indicating that no values have been measured yet. 2. P...

  • Page 61

    5.3 measuring the spatial average narda nbm-550 51 measuring values continuously making the measurement ✓ you have selected continuous as spatial avg mode . 1. Press the spatial average key. Spatial measurement mode is displayed. 2. Press the start key. The measurement starts. The elapsed measuremen...

  • Page 62: 5.4

    5 measuring with the nbm-550 and hf probes 52 nbm-550 narda 5.4 measuring in history display mode you can display the progress of the measurement versus time in history mode. You can use the cursor to mark individual points on the curve and display the associated values. Changing to history display ...

  • Page 63: Evaluating The Curve

    5.4 measuring in history display mode narda nbm-550 53 changing the time period: 1. Open the history time scale function (main/data logger/...). 2. Use the arrow keys ▲ / ▼ to set the desired time and press the ok key to confirm the setting. Evaluating the curve 1. Press the hold key to freeze the c...

  • Page 64: Storing The Graphical Record

    5 measuring with the nbm-550 and hf probes 54 nbm-550 narda storing the graphical record the measurement values of the progress memory can be saved. To save the measurement value recording: 1. Press the hold key to freeze the curve. 2. Press the store history function key. The measurement value reco...

  • Page 65: Display Overview

    5.5 measuring in xyz display mode narda nbm-550 55 display overview changing the result type note: you can only change the result type for the upper display area. Press the result type function key to select a different result type (refer to “selecting the result type” on page 46 for information abo...

  • Page 66: 5.6

    5 measuring with the nbm-550 and hf probes 56 nbm-550 narda 5.6 measuring in monitor display mode monitor display mode simultaneously shows the maximum, average, and minimum measured values as well as the latest measured value. Changing to monitor display mode ✓ the display is in measurement mode. 1...

  • Page 67: 5.7

    5.7 activating the alarm function narda nbm-550 57 5.7 activating the alarm function the alarm function allows you to enter a limit value. The instrument outputs an audible signal and the status led flashes red when this limit value is exceeded. This function is useful for checking limit values or f...

  • Page 68: 5.8

    5 measuring with the nbm-550 and hf probes 58 nbm-550 narda 5.8 audible indicator (hot spot search) you can use the audible indicator function to indicate changes in field strength and determine hot spots (areas of maximum field strength). The audible signal changes according to the way the field ch...

  • Page 69

    5.9 measuring with a test standard narda nbm-550 59 step 1: select a test standard 1. Open the standard function (main/measurement settings/...). 2. Use the arrow keys ▲ / ▼ to select a standard and press the ok key. Step 2: select the reference frequency open the frequency function (main/measuremen...

  • Page 70: Standard

    5 measuring with the nbm-550 and hf probes 60 nbm-550 narda step 3: applying the test standard 1. Open the apply standard function (main/measurement settings/...). 2. Use the arrow keys ▲ / ▼ to select on and press the ok key. The test standard is activated, the selected frequency ( freq ) is shown ...

  • Page 71: Example Displays

    5.9 measuring with a test standard narda nbm-550 61 example displays probe type: e-field flat probe probe type: e-field shaped probe probe type: combination (e-field and h-field) flat probe combi probe uses: v/m, a/m note: the s-field is shown in the upper area of the display as the product of the m...

  • Page 72

    5 measuring with the nbm-550 and hf probes 62 nbm-550 narda 5.10 measuring with a correction frequency all probes are calibrated in our factory to guarantee the traceability of measurements back national standards. This calibration is performed at various frequencies over the entire measurement rang...

  • Page 73: Measurements With The

    Narda nbm-550 63 6 measurements with the nbm-550 and ehp-50 this chapter describes the special functions of the nbm-550 when used with the ehp-50 lf analyzer. You can find information about measuring with hf probes in the chapter “measuring with the nbm-550 and hf probes” on page 43. The ehp-50 anal...

  • Page 74: 6.1

    6 measurements with the nbm-550 and ehp-50 64 nbm-550 narda 6.1 general information the ehp-50 analyzer is a stand-alone measuring instrument with remote operation. This operating manual describes how measurements can be made using the nbm-550 for operation of the ehp-50. Descriptions of stand-alone...

  • Page 75: 6.2

    6.2 display types narda nbm-550 65 6.2 display types the measurement settings you used last time will be applied after the ehp-50 and nbm-550 have started up. You can change the settings by opening a previously saved setup (see “saving and loading instrument settings” on page 90) or change the measu...

  • Page 76: 6.3

    6 measurements with the nbm-550 and ehp-50 66 nbm-550 narda to select the display mode: ✓ the display is in measuring mode. 1. Press the ok key to open the main menu. 2. Press the view key until the desired display mode is shown. 3. Press the esc key to switch to measuring mode. 6.3 general settings...

  • Page 77: Changing The Result Type

    6.3 general settings narda nbm-550 67 the magnetic field range is displayed in gauss if you have previously selected gauss as the units. To set the display to gauss: 1. Open the magnetic field unit function open the frequency mode function (main menu/measurement settings/...). 2. Use the arrow keys ...

  • Page 78: Average

    6 measurements with the nbm-550 and ehp-50 68 nbm-550 narda average the average value is determined. You can set the number of measurements to be used to form the average to 4, 8, 16 or 32. To change the number of averages: 1. Open the no. Of averages function (main menu/measurement settings/...). 2...

  • Page 79: 6.4

    6.4 wpm display mode (weighted peak method) narda nbm-550 69 6.4 wpm display mode (weighted peak method) information about wpm fields with complex signal characteristics, such as those caused by the current pulses used in resistance welding, are becoming more and more common. The weighted peak metho...

  • Page 80

    6 measurements with the nbm-550 and ehp-50 70 nbm-550 narda wpm display mode displays the percentage of the limit value that has been reached referred to the selected safety standard (wideband value from 1 hz to 400 khz) and a graph of the field strength value versus time. To change the time scale: ...

  • Page 81: Meaning of The Wpm Values

    6.5 spectrum display mode narda nbm-550 71 meaning of the wpm values measurement values are captured continuously while the graph is drawn. However, the graph display can only use discrete time points that can be selected using the cursor. The maximum value measured within the corresponding time win...

  • Page 82: Other Functions

    6 measurements with the nbm-550 and ehp-50 72 nbm-550 narda to use the marker function: you can use the marker to read out each separate evaluation frequency in the spectrum of the fft analysis. 1. Press the marker function key (the key is labeled off when the marker function is active). The marker ...

  • Page 83: 6.6

    6.6 standard display mode narda nbm-550 73 6.6 standard display mode standard display mode corresponds to spectrum display mode but with the measured values normalized against a safety standard and shown as percentage values. Limit values must be defined by the safety standard for the frequency rang...

  • Page 84: 6.7

    6 measurements with the nbm-550 and ehp-50 74 nbm-550 narda 6.7 xyz display mode xyz display mode allows you to display the numerical measurement results for each separate axis of the ehp-50 as well as the isotropic value (rss). This display mode is useful for optimum alignment of the ehp-50 and all...

  • Page 85: 6.9

    6.9 other settings narda nbm-550 75 6.9 other settings where necessary, you can make other settings in the same way as for hf probes. There are some restrictions for certain functions; these are explained below. Detailed descriptions are found in the chapters indicated. Unavailable functions the fol...

  • Page 86

    6 measurements with the nbm-550 and ehp-50 76 nbm-550 narda means that 1 s will be displayed even if an interval time of 10 s is necessary, for example. The table below shows the relationship between span and timer interval: generally the measurement time or refresh rate for the result display in lf...

  • Page 87: Managing Result Data

    6.9 other settings narda nbm-550 77 managing result data please refer to “managing result data” on page 84 for information. The results saved in ehp-50 mode are indicated by the following abbreviations in the data viewer: • lfs = spectrum display mode • lf% = standard display mode • lf3 = xyz displa...

  • Page 88

    6 measurements with the nbm-550 and ehp-50 78 nbm-550 narda.

  • Page 89: Recording And Managing

    Narda nbm-550 79 7 recording and managing measured values this chapter describes how to record measurement values automatically (data logger) and how to recall and manage the measurement data that you have recorded manually or automatically. 7.1 storage types (page 80) 7.2 recording measurements by ...

  • Page 90: 7.1

    7 recording and managing measured values 80 nbm-550 narda 7.1 storage types as well as manually storing individual values (see “storing a measured value” on page 47), you can also store entire sequences of measurements automatically. There are two ways to do this: • you can start storing results at ...

  • Page 91

    7.2 recording measurements by timer control narda nbm-550 81 setting the recording parameters 1. Open the data logger menu (main/data logger). 2. To enter the starting time: – open the timer start function, – select a digit using the / function keys and use the arrow keys ▲ / ▼ to change the value, ...

  • Page 92: Starting The Recording

    7 recording and managing measured values 82 nbm-550 narda starting the recording ✓ the data logger menu (main/data logger) is open. Press the timer logging function key. The display switches to measurement mode. The latest measured value is shown in the upper half of the display. The values you ente...

  • Page 93

    7.3 recording conditional measurements (optional) narda nbm-550 83 setting the recording parameters the following parameters are available: setting the recording parameters 1. Open the data logger menu (main/data logger). 2. To enter the starting condition: – open the store condition function, – sse...

  • Page 94: 7.4

    7 recording and managing measured values 84 nbm-550 narda starting / stopping the recording ✓ the data logger menu (main/data logger) is open. 1. Press the condition logging function key. The display switches to measurement mode. Note: if voice recording is activated, a comment can be recorded (opti...

  • Page 95: Using The Memory Manager

    7.4 managing result data narda nbm-550 85 using the memory manager open the memory manager menu (main/...). The last data set stored is displayed (refer to table 5 for the meanings of the columns). Press the play key to play back the comment (if available). Press the delete latest key to delete the ...

  • Page 96: Data Viewer Display Examples

    7 recording and managing measured values 86 nbm-550 narda paging through the overview list press the previous or next function key to page back or forward in the list. To display saved measurement data: use the arrow keys ▲ / ▼ to select an entry from the list and press the ok key to open the entry....

  • Page 97

    7.4 managing result data narda nbm-550 87 example 3: condition logging paging within a series of measurements use the previous (sub) or next (sub) key to page back or forward in the series of measurements. The value in brackets after the index indicates the sub data set within the measurement series...

  • Page 98

    7 recording and managing measured values 88 nbm-550 narda deleting a data set note: you can only ever delete the last entry in the memory. ✓ the overview list is open. Press the delete latest function key. The last (latest) entry is deleted..

  • Page 99: Setup and Configure

    Narda nbm-550 89 8 setup and configure this chapter describes additional functions and settings for the interface, for instrument information and settings, as well as for use of the nbm-550 as a controller and for the activation of new instrument options. 8.1 configuring the interface (page 90) 8.2 ...

  • Page 100: 8.1

    8 setup and configure 90 nbm-550 narda 8.1 configuring the interface you can use the serial interface via usb or an optical connection. Configuring the interface open the serial interface function (main/interface/...). Use the arrow keys ▲ / ▼ to select usb or optical and press the ok key. Note: log...

  • Page 101: Changing A Setup Name

    8.2 saving and loading instrument settings narda nbm-550 91 to delete a memory position: any saved instrument settings are deleted and the factory default settings are substituted. The memory position is retained. Note: this function is not available unless user is displayed. Use the arrow keys ▲ / ...

  • Page 102: 8.3

    8 setup and configure 92 nbm-550 narda setting the power on behavior you can use the power on function to specify the instrument setup that is loaded when you switch on the nbm-550. The following settings are possible: • previous : the settings in use when the instrument was last switched off are re...

  • Page 103: 8.4

    8.4 using the nbm-550 as a controller narda nbm-550 93 8.4 using the nbm-550 as a controller you can use the nbm-550 to control other instruments from narda safety test solutions such as the nbm-520 or another ▲ / ▼ . This allows you to measure in places that are difficult to reach with convenient o...

  • Page 104: 8.5

    8 setup and configure 94 nbm-550 narda 8.5 activating instrument options instrument options such as the gps/voice recorder/ conditional logging option expand the capabilities of the nbm-550. Options can be subsequently ordered and must then be activated via a provided activation code (option key). A...

  • Page 105: Pc Software

    Narda nbm-550 95 9 pc software this chapter gives you some basic information about the nbm-ts pc software. It explains the possible applications of the software, how to connect the nbm-550 to the pc and the settings you need to make on the nbm-550. It also describes how to update the firmware of the...

  • Page 106: 9.1

    9 pc software 96 nbm-550 narda 9.1 using the pc software the nbm-ts pc software is included with the nbm-550. The pc software provides a large number of functions: • visualization of stored measurement results • off-line analysis of stored results • remote control of the nbm-550, including live sign...

  • Page 107: 9.2

    9.2 connecting the nbm-550 narda nbm-550 97 9.2 connecting the nbm-550 you can connect the nbm-550 to the pc using the usb interface or the optical interface: • use usb to make use of the higher transmission speed • use the optical interface for remote control, since the metallic usb cable can affec...

  • Page 108: 9.4

    9 pc software 98 nbm-550 narda 9.4 updating the firmware you can update the firmware of the nbm-550 in order to make use of new or improved functions. You can only update the firmware using a pc on which the nbm-ts pc software has been installed. Note: the nbm-550 must be supplied with power via the...

  • Page 109: 9.5

    9.5 performing a reset narda nbm-550 99 9.5 performing a reset if the instrument no longer responds, you can perform a reset to initialize it. Performing a reset press the 1 function key and the on/off key at the same time. The instrument restarts. Note: a reset does not change any instrument parame...

  • Page 110

    9 pc software 100 nbm-550 narda.

  • Page 111: Overview Of All Menus and

    Narda nbm-550 101 10 overview of all menus and functions this chapter describes all the menus and functions of the nbm-550. 10.1 measurement menus (page 102) 10.2 main menu (page 103) 10.3 measurement settings (hf mode) (page 104) 10.4 measurement settings (lf mode) (page 106) 10.5 data logger (page...

  • Page 112: 10.1 Measurement Menus

    10 overview of all menus and functions 102 nbm-550 narda 10.1 measurement menus the four function keys in the measurement menus allow you to select various functions. Note: the function keys have the same functions in all display modes (normal, xyz, monitor, history), with the exception of function ...

  • Page 113: 10.2 Main Menu

    10.2 main menu narda nbm-550 103 10.2 main menu to open the main menu, press the ok from any of the measurement menus. Note: the underlined settings are the factory default settings. Function meaning sub-menu measurement settings • set general measurement parameters • select the language data logger...

  • Page 114: Page 1

    10 overview of all menus and functions 104 nbm-550 narda 10.3 measurement settings (hf mode) you can change the general measurement parameters in the measurement settings menu. Page 1 note: the language selection is deliberately at the top of the menu. This makes it easy for you to revert to the ori...

  • Page 115: Page 2

    10.3 measurement settings (hf mode) narda nbm-550 105 page 2 press the next function key to open page 2 of the menu. Function meaning menu functions auto power-off set time until automatic power off: • off: auto power off disabled • 6 min, 15 min, 30 min, 60 min lcd backlight set time until backligh...

  • Page 116: Page 1

    10 overview of all menus and functions 106 nbm-550 narda 10.4 measurement settings (lf mode) you can change the general measurement parameters in the measurement settings menu. Page 1 function meaning menu functions language select the language: english, spanish, italian, chinese, french, turkish, r...

  • Page 117: Page 2

    10.4 measurement settings (lf mode) narda nbm-550 107 page 2 press the next function key. Function meaning menu functions auto power-off set time until automatic power off: • off: auto power off disabled • 6 min, 15 min, 30 min, 60 min lcd backlight set time until backlight switches off: • permanent...

  • Page 118: 10.5 Data Logger

    10 overview of all menus and functions 108 nbm-550 narda 10.5 data logger in the data logger menu, you can set the measurement value recording parameters and start a timer controlled or conditional recording. Function meaning menu functions history time scale history window time scale: 2 min., 8 min...

  • Page 119

    10.5 data logger narda nbm-550 109 lower threshold 2) (optional) lower threshold for condition logging (only applies to out of gap ) voice recorder (optional) enable voice recording after storing measured values: on, off function keys unit:... 2) select the measured value units: w/m 2 , mw/cm 2 , v/...

  • Page 120: 10.6 Memory Manager

    10 overview of all menus and functions 110 nbm-550 narda 10.6 memory manager you can display information about the last stored set of measured values and delete stored measured values in the memory manager menu. Function meaning information displayed index memory position of saved measurement data s...

  • Page 121: 10.7 Interface

    10.7 interface narda nbm-550 111 10.7 interface you can configure the interface, change the display of gps coordinates, and adjust the volume of the audio output signal to the earphone using the interface menu. Function meaning ehp-50 display lf measurement with ehp-50: on, off serial interface 1) 1...

  • Page 122: 10.8 Information

    10 overview of all menus and functions 112 nbm-550 narda 10.8 information you can display information about the instrument and the probe in the information menu. Function meaning device information displays information about the instrument: • product name: instrument name • production id: production...

  • Page 123: 10.9 Setup

    10.9 setup narda nbm-550 113 10.9 setup you can save and recall your instrument setups and specify the power on behavior of the instrument in the setup menu. The following parameters are not changed by the setups: • language • serial interface • controller function • power on • contrast function mea...

  • Page 124: 10.10 Clock

    10 overview of all menus and functions 114 nbm-550 narda 10.10 clock you can set the time and date in the clock menu. Function meaning time sets the time. Time format sets the time format: • 12 h clock • 24 h clock date sets the date. Date format sets the date format: • mm/dd/yyyy • dd.Mm.Yyyy • yyy...

  • Page 125: Instrument Maintenance

    Narda nbm-550 115 11 instrument maintenance this chapter describes how to clean the instrument and how to replace the batteries. 11.1 cleaning the instrument (page 116) 11.2 replacing / removing the batteries (page 117) 11.3 disposal (page 119) 11.4 checking instrument functions (page 120).

  • Page 126: Notice

    11 instrument maintenance 116 nbm-550 narda 11.1 cleaning the instrument cleaning the instrument 1. Use a soft cloth to clean the instrument. You can use lukewarm water to which a little detergent solution has been added as a cleansing agent. 2. To prevent streaks and spots, wipe off the instrument ...

  • Page 127: Warning

    11.2 replacing / removing the batteries narda nbm-550 117 11.2 replacing / removing the batteries warning improper replacement of batteries overheating, explosion, or ignition of rechargeable batteries/batteries or their surroundings only use the nbm-550 with nimh rechargeable batteries (aa, mignon)...

  • Page 128

    11 instrument maintenance 118 nbm-550 narda the rechargeable batteries have a useful life of about 1000 charge cycles or 3 years (whichever occurs soonest). Replace the batteries if the operating time is significantly reduced although the batteries are fully charged. Replacing the batteries 1. Switc...

  • Page 129: 11.3 Disposal

    11.3 disposal narda nbm-550 119 11.3 disposal rechargeable batteries do not dispose of the batteries with the normal household waste. You should dispose of old batteries that are no longer required in accordance with the waste disposal ordinances in your country. Instrument this product is subject t...

  • Page 130: Warning

    11 instrument maintenance 120 nbm-550 narda 11.4 checking instrument functions note: the function test does not apply to the ehp-50. The ehp-50 has its own built in self test. Performing a function test: 1. Connect the probe to the instrument (see “connecting the probe” on page 24). 2. Switch the in...

  • Page 131

    11.4 checking instrument functions narda nbm-550 121 5. Switch the signal source on the probe channel 1...3 display increases: function test ok . Press the esc button three times to change to the measurement mode. The probe channel 1...3 display does not increase: function test not ok. Do not use th...

  • Page 132: Appropriate Test Sources

    11 instrument maintenance 122 nbm-550 narda appropriate test sources the following table shows appropriate test sources for a function test. Probe test source: 27 mhz (2244/90.38) test source: 446 mhz pmr pocket radio 1) 1) pmr pocket radios are commonly available in electronics stores. Test source:...

  • Page 133: Specifications

    Narda nbm-550 123 12 specifications this chapter lists the specifications of the nbm-550. For the ehp-50 a separate data sheet is provided. 12.1 display (page 124) 12.2 measurement functions (with hf probes) (page 124) 12.3 result memory (page 125) 12.4 interfaces (page 125) 12.5 options (page 126) ...

  • Page 134: 12.1 Display

    12 specifications 124 nbm-550 narda 12.1 display 12.2 measurement functions (with hf probes) display type transreflective monochrome lcd display size 10 cm (4"), 240 x 320 pixels backlight white leds, selectable lighting time (off, 5 s, 10 s, 30 s, 60 s, permanent) display refresh rate 200 ms for ba...

  • Page 135: 12.3 Result Memory

    12.3 result memory narda nbm-550 125 12.3 result memory 12.4 interfaces physical memory 12 mb non-volatile flash memory for measurement results and voice comments memory capacity up to 5000 results (indices with instrument setting, timestamp, and gps data if included) remote operation optional via u...

  • Page 136: 12.5 Options

    12 specifications 126 nbm-550 narda 12.5 options conditional logging conditions selectable: – upper threshold: value stored when set threshold exceeded – out of gap: value stored if outside the range limits (upper / lower threshold) store range selectable: – store all (as long as the condition is fu...

  • Page 137: 12.6 General Specifications

    12.6 general specifications narda nbm-550 127 12.6 general specifications recommended calibration interval 24 months 1) 1) only for basic instrument; probes are specified separately mtbf >10 years (basic unit with probe) batteries standard nimh rechargeable batteries, 4 x type aa (mignon), 2500 mah ...

  • Page 138: 12.7 Standards Compliance

    12 specifications 128 nbm-550 narda 12.7 standards compliance 12.8 ac adapter / charger 12.9 ehp-50 the specifications for the ehp-50 are contained in the ehp-50 operating manual, which is provided as a pdf file on the cd of the ehp-ts pc software. Climatic storage 1k3 (iec 60721-3) extended to -10 ...

  • Page 139

    12.10 ce declaration of conformity narda nbm-550 129 12.10 ce declaration of conformity.

  • Page 140

    12 specifications 130 nbm-550 narda.

  • Page 141

    12.11 declarations of origin narda nbm-550 131 12.11 declarations of origin nbm-550 germany ehp-50 italy.

  • Page 142

    12 specifications 132 nbm-550 narda.

  • Page 143: Ordering Information

    Narda nbm-550 133 13 ordering information this chapter contains the information needed for ordering the nbm-550, together with its probes and accessories. 13.1 nbm-550 (page 134) 13.2 probes (page 134) 13.3 accessories (page 135).

  • Page 144: 13.1 Nbm-550

    13 ordering information 134 nbm-550 narda 13.1 nbm-550 13.2 probes high frequency probes nbm-500 set 1, narda broadband field meter set includes: • nbm-550 basic unit (2401/01b) • hardcase for nbm-500 series, holds meter and up to 5 probes (2400/90.06) • power supply 9 vdc, 100 v – 240 vac (2259/92....

  • Page 145: Low Frequency Probes

    13.3 accessories narda nbm-550 135 low frequency probes 13.3 accessories ehp-50f e&h field analyzer set, 1 hz – 400 khz, for nbm-550 set includes: • ehp-50f basic unit (2404/03) • ac/dc battery charger, for ehp-50 (2259/92.08) • fo duplex rp-02 cable, 10 m (2260/91.07) • optical bridge connector rp-...

  • Page 146

    13 ordering information 136 nbm-550 narda.

  • Page 147: Glossary

    Narda nbm-550 137 14 glossary this chapter explains some important terms that are used in this operating manual..

  • Page 148

    14 glossary 138 nbm-550 narda average the average (mean) value formed from a range of numerical values or measurements. For high frequency electromagnetic fields, rms (root mean square) averaging is used for determining field strength values (v/m, a/m) and linear averaging for power density values (...

  • Page 149

    13.3 accessories narda nbm-550 139 h-field magnetic field magnetic fields are generated by moving electrical charges. Magnetic field strength h is expressed in amperes per meter: h = [a/m]. Isotropy from the greek: isos = same; tropos = turning, direction. Signifies the degree to which a characteris...

  • Page 150

    14 glossary 140 nbm-550 narda tem cell transverse electromagnetic cell tem cells are used to perform rf supported noise immunity investigations or emission measurements. They are much smaller than an emc cabin (maybe just large enough to hold a pc), and are basically a coaxial conductor expanded int...

  • Page 151: Index

    Narda nbm-550 141 index a ac adapter/charger, dangers from 10 activating instrument options 94 activating voice recording 48 add voice comments 48 after transport and storage 15 alarm function activation 57 appropriate test sources 122 audible indicator 58 auto off function 36 auto zero 35 b backlig...

  • Page 152

    Index 142 nbm-550 narda emv 138 error message 30 evaluating the curve 53 external trigger 47 f function test 120 g gps 138 changing the display 39 fitting the module 27 reception 31 gtem cell 140 h h-field 139 history mode 52 hot spot search 58 i improper use 8 information menu 112 instrument functi...

  • Page 153

    Index narda nbm-550 143 result data management 84 result type selection 46 result types, ehp-50 67 rss 139 s safety dangers from electromagnetic fields 9 proper handling of rechargeable batteries 22 save / load instrument settings 90 selecting the language 35 setting the date and time 38 setup menu ...

  • Page 154

    Index 144 nbm-550 narda.

  • Page 156

    Narda safety test solutions gmbh sandwiesenstraße 7 72793 pfullingen, germany phone: +49 7121-9732-0 fax: +49 7121-9732-790 e-mail: support.Narda-de@l-3com.Com www.Narda-sts.Com narda safety test solutions 435 moreland road hauppauge, ny 11788, usa phone: +1 631-231-1700 fax: +1 631-231-1711 e-mail:...