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Vemco VR100 User Manual

Manual is about: Acoustic Receiver and Deck Box

Summary of VR100

  • Page 1

    How to use the vr100 receiver – as a manually tracking receiver and as a transponding deckbox. 24 may 2018 doc-4536-18 www.Vemco.Com.

  • Page 2: Summary Of Manual

    Summary of manual this manual is intended to provide vemco users with the information they require to use the vr100 receiver. Vemco highly recommends that the user fully read the manual before using the equipment or the vr100 pc software. Section 1: introduction getting to know the vr100 receiver se...

  • Page 3: Table Of Contents

    Table of contents 1 introduction ........................................................................ 1 1.1 system overview ................................................................................................................ 1 1.2 quick setup ............................................

  • Page 4

    3.7 export ............................................................................................................................... 23 3.8 tag manager .................................................................................................................... 24 3.8.1 add a tag .........

  • Page 5

    6.1.3 transponding menu structure .................................................................................. 47 6.1.3.1 initial options ......................................................................................................... 47 6.1.3.2 transponding options .....................

  • Page 6

    9 appendix .......................................................................... 80 9.1 cleaning instructions ........................................................................................................ 80 9.2 contact information ........................................................

  • Page 7: Introduction

    Vemco – vr100 manual 28 may 2018 1 1 introduction 1.1 system overview the vr100 is a general-purpose, ultrasonic, splash-resistant receiver designed for manual tracking of aquatic animals from small boats or for recording laboratory data. Its hardware architecture has been developed to support a wid...

  • Page 8: 1.2 Quick Setup

    Vemco – vr100 manual 28 may 2018 2 the vr100 receiver is designed to operate with a hydrophone containing a high gain, low noise pre-amplifier powered by the receiver. An omni-directional hydrophone is useful when identifying activated tags in the area. A directional hydrophone is used to enable the...

  • Page 9: 1.3 Vr100 Case

    Vemco – vr100 manual 28 may 2018 3 1.3 vr100 case the vr100 receiver is housed in a strong, sealed, splash-resistant case. The cover of the case must be opened to access the receiver’s front panel with the lcd display and the soft-touch controls (section 1.5.4). A gel cell battery is housed inside t...

  • Page 10: 1.4 Case Parts

    Vemco – vr100 manual 28 may 2018 4 1.4 case parts the external components of a vr100 consist of:  a hydrophone  a usb cable  a battery charger  headphones these components are all connected to the vr100 through connectors on the side of the case. The case has a pressure relief vent to allow any ...

  • Page 11: 1.5 Connectors And Caps

    Vemco – vr100 manual 28 may 2018 5 1.5 connectors and caps there are four bulkhead connectors on the right side of the vr100 case that are used to connect the different components of the vr100 system to the receiver, such as the hydrophone. The picture below shows the connectors without their protec...

  • Page 12

    Vemco – vr100 manual 28 may 2018 6 1.5.2 inserting a connector the red dot on the end of the connector must line up with the red line on the vr100’s connector, as shown in the photo on the right. The connectors have unique grooves to prevent the wrong connector halves from being placed together. Lin...

  • Page 13

    Vemco – vr100 manual 28 may 2018 7 1.5.4 vr100 front panel the vr100 receiver’s front panel allows the vr100 to be configured, allows deployed tags to be monitored, and allows two-way acoustic communication with transponding receivers like the vr2ar – including sending the release command. The panel...

  • Page 14: 1.6 Attachments

    Vemco – vr100 manual 28 may 2018 8 1.5.5 vr100 screen the lcd screen on the vr100 receiver has four lines for text and changes based on the task at hand. The main screen is shown below and appears when the vr100 is turned on. The buttons used with the screen are identified and described in the sketc...

  • Page 15

    Vemco – vr100 manual 28 may 2018 9 this hydrophone is also weighted for easier deployments. When a transponding hydrophone is attached to a vr100-200, acoustic communication to a transponding receiver is possible. All hydrophones listed in the table below will function with either vr100 model, altho...

  • Page 16

    Vemco – vr100 manual 28 may 2018 10 the protective cap attached to the hydrophone cable should always be on the cable’s connector when the hydrophone is not connected to the vr100 to prevent water from entering the hydrophone’s connector. Water in the connector may enter the cabling and cause damage...

  • Page 17: Getting Started

    Vemco – vr100 manual 28 may 2018 11 2 getting started the basic information you need to get started using the vr100 is contained in this section of the manual. Additional information, including more advanced tasks, is contained in a later section. 2.1 setup vr100 there are some basic things that sho...

  • Page 18

    Vemco – vr100 manual 28 may 2018 12 remove the protective cap from the hydrophone connector by grasping the ridged edge of the cap and pulling away from the vr100. Step 3 remove the protective cap from the connector on the end of the hydrophone you’re using. Warning never remove the receiver’s front...

  • Page 19

    Vemco – vr100 manual 28 may 2018 13 2.1.2 set local time offset the utc offset and the local date and time are set by following the steps below from the main screen: 1. Select config (see section 6.1.2.1). 2. Press “2” on the keypad. 3. Press “1” on the keypad. 4. Enter the utc offset for the area w...

  • Page 20

    Vemco – vr100 manual 28 may 2018 14 2.1.4 verify code maps there are four default code maps used with vemco coded tags:  map-114 for 69 khz (current)  map-113 for 69khz (legacy)  map-414 for 180 khz  map-311 for 81 khz these maps are installed by default but it is wise to verify that these defau...

  • Page 21: 2.2 Enter Tag Information

    Vemco – vr100 manual 28 may 2018 15 2.2 enter tag information information must be entered for sensor transmitters for the data to be displayed in the correct units. Data received from coded sensor transmitters can be displayed without this information stored in the receiver, but it will be raw data ...

  • Page 22: 2.3 Setup Channels

    Vemco – vr100 manual 28 may 2018 16 2.2.2 setup a continuous sensor tag from the main screen: 1. Select config (see section 6.1.2.1). 2. Press “4” on the keypad. This displays the list of sensor tag types. 3. Select either “2 one-sensor continuous tag” or “3 two-sensor continuous tag” depending on t...

  • Page 23

    Vemco – vr100 manual 28 may 2018 17 5. Press the left selection button to “edit” this channel, or press the right button to “accept” the channel configuration. 6. Use the arrow buttons to select “cont pinger” and press the right selection button for “next”. 7. Enter the desired frequency in kilohert...

  • Page 24

    Vemco – vr100 manual 28 may 2018 18 2.3.3 setup a channel to monitor a coded tag a channel can be set up to monitor a large number of coded tags on one frequency. From the main screen: 1. Select config (see section 6.1.2.1). 2. Press “1” on the keypad. 3. Select the desired channel number on the key...

  • Page 25: 2.4 Testing

    Vemco – vr100 manual 28 may 2018 19 7. Review the summary screen to verify that the information is correct. 8. Press the right selection button for “accept”. 9. Select the channel to be set up by either using the up/down arrows or pressing the corresponding number on the keypad. 10. Press the left s...

  • Page 26: Software

    Vemco – vr100 manual 28 may 2018 20 3 software the vr100 can communicate with the vr100 pc software to allow sensor tag information to be setup and to offload data from the receiver. The main functions performed with this software are explained in this section of the manual. 3.1 install vr100 pc sof...

  • Page 27: 3.3 Vr100 Receiver Window

    Vemco – vr100 manual 28 may 2018 21 the vr100 software can be used without a vr100 connected to the computer by selecting the serial number “virtual”. This allows sensor transmitter information to be entered and saved (see section 3.8) in preparation of being uploaded to the receiver without the rec...

  • Page 28: 3.4 Offload Data

    Vemco – vr100 manual 28 may 2018 22 3.4 offload data the logs menu is used to offload, or copy, the data stored on the vr100 receiver to a log file on the computer. There are two options in loading data, to retrieve all the data stored in the vr100 (get all data) or to only retrieve the data stored ...

  • Page 29: 3.6 Erase Vr100 Log

    Vemco – vr100 manual 28 may 2018 23 3.6 erase vr100 log the erase vr100 log command will erase the event log (memory) in the vr100 receiver. This is the same command that is seen after data is loaded from the receiver to the computer. When the command is given, a verification screen is displayed to ...

  • Page 30: 3.8 Tag Manager

    Vemco – vr100 manual 28 may 2018 24 3.8 tag manager the tag manager window allows sensor tag setups to be created, or edited, and then transferred to vr100 receiver. A group of sensor tags can be saved as a setup file and opened at a future time. The tag manager window opened by selecting tag manage...

  • Page 31

    Vemco – vr100 manual 28 may 2018 25 3.8.1 add a tag the add sub-menu (in pc setup) allows a sensor tag to be added. Adding a tag refers to entering a sensor transmitter’s information so the received data can be displayed in the correct units, which must be done for each sensor transmitter being used...

  • Page 32

    Vemco – vr100 manual 28 may 2018 26 3. Click the update button. The tag is now added to the list shown in the pc managed setup half of the window (on left). The tag just setup has not yet been entered in the vr100 receiver. It must be transferred to the receiver setup list (see section 3.8.3). 3.8.2...

  • Page 33: 3.9 Options...

    Vemco – vr100 manual 28 may 2018 27 3.8.4 save tag and map setups the tag and map setups that you’ve created in vr100 pc can be saved as a resource file (see section 6.6.3) and opened at a later time or on a different computer. This allows multiple vr100 receivers to quickly be setup with the same s...

  • Page 34: In The Field

    Vemco – vr100 manual 28 may 2018 28 4 in the field there are two major tasks that are usually performed in the field. One of those tasks is manually tracking a tag using a directional hydrophone. The other popular task is using the vr100 as a deck-box to communicate with a vemco receiver capable of ...

  • Page 35: 4.2 Monitoring

    Vemco – vr100 manual 28 may 2018 29 4.2 monitoring the monitor feature displays real-time information, allowing active tags to be monitored or tracked. A sample of how the screen appears in monitor mode is shown below with labels identifying the information shown on the screen. Further explanation o...

  • Page 36

    Vemco – vr100 manual 28 may 2018 30 from the main screen: 1. Select monitor by pressing the left selection button. A screen on the vr100 will appear similar to the sample below. 2. Press the number on the keypad corresponding to the channel number to be monitored (section 2.3 explains how to setup c...

  • Page 37

    Vemco – vr100 manual 28 may 2018 31 4.2.3 using signal strength and gain when tracking when tracking a tag using the vr100 and a directional hydrophone (the vh110 for example), the signal strength will increase as the hydrophone approaches the tag. The gain must be set to manual (“m” appears in the ...

  • Page 38: 4.3 Check Status

    Vemco – vr100 manual 28 may 2018 32 4.3 check status 4.3.1 battery life the battery voltage level can be viewed on the vr100 receiver display by following the steps listed below. Note: if an external power source is connected to the receiver, then the voltage reported by the vr100 is the voltage of ...

  • Page 39: 4.4 Acoustic Communication

    Vemco – vr100 manual 28 may 2018 33 4.4 acoustic communication a beautiful feature of a receiver is the ability to communicate with it while it is deployed. This section covers the main tasks that would be performed when communicating with a receiver. A screen is shown with each step, but the button...

  • Page 40

    Vemco – vr100 manual 28 may 2018 34 step 4 select the desired unit from the list of receivers by either moving through the list using the direction arrow buttons and then pressing the right selection button (under “select” on the display), or by pressing the associated number on the keypad. For exam...

  • Page 41

    Vemco – vr100 manual 28 may 2018 35 4.4.1.3 manually scanning for devices you can manually scan for devices. Manual scanning only sends a single search command, and you can specify if you want to send the wakeup signal, as well as the “listening” time using the “estimated # of devices” entered. This...

  • Page 42

    Vemco – vr100 manual 28 may 2018 36 4.4.1.4 setting the hydrophone power by default, the hydrophone’s transmit power level is set to 7-maximum. You may only need to try different settings for troubleshooting purposes. The asterisk (*) is shown under the current power setting. When the asterisk is be...

  • Page 43

    Vemco – vr100 manual 28 may 2018 37 4.4.2 get status information the features in the status menu allow access to the following information: slant (or absolute) range, vertical depth, receiver time, battery remaining, memory used, vertical tilt, number of detections stored, temperature, and firmware ...

  • Page 44

    Vemco – vr100 manual 28 may 2018 38 4.4.3 get detection or pings stats receivers can report a rough number of detections or pings stored in the memory. This can be the total number since the receiver was last initialized, the amount since the last data offload, or the amount since the last mark was ...

  • Page 45

    Vemco – vr100 manual 28 may 2018 39 4.4.4 check watch table the watch table in a receiver must be setup in vue before deployment. With this table of tags to “watch” in place, the receiver can report if one of the up to 128 tags (up to 192 for an hr2 receiver) in the watch table was in the area, appr...

  • Page 46

    Vemco – vr100 manual 28 may 2018 40 4.4.5 performing acoustic release (vr2ar only) the vr2ar receiver has the capability to release from its mooring and, with the proper floatation attached, rise to the surface. Deploying a vr2ar is explained in the vr2ar user manual. Below are the instructions for ...

  • Page 47: Maintenance

    Vemco – vr100 manual 28 may 2018 41 5 maintenance 5.1 clear memory when 100 % of the log memory is full, the memory must be erased before more events can be logged. The memory is erased from either the event log screen (described below) or from within the pc software (see section 3.6), but the memor...

  • Page 48: 5.3 Storage

    Vemco – vr100 manual 28 may 2018 42 3. Plug the metal connector on the supplied battery charger into the power connector on the side of the vr100 case (see photo below). The connector on the charger cable will only fit the power connector on the receiver and only in the correct orientation. 4. Plug ...

  • Page 49: Additional Information

    Vemco – vr100 manual 28 may 2018 43 6 additional information 6.1 menu outlines vr100 operations are separated into three groups: monitoring, configuring, and transponding (transponding is only available on the vr100-200 model and requires additional equipment). Two of these groups, configuring and t...

  • Page 50

    Vemco – vr100 manual 28 may 2018 44 6.1.2 configure menu structure it is in the configure menu that vr100 settings can be set, such as adjusting the backlight, entering sensor tag information, or setting up a channel. The structure of this menu is shown in the graphic below with explanations followi...

  • Page 51

    Vemco – vr100 manual 28 may 2018 45 4. Sensor tags – enter, edit, or delete the information pertaining to sensor tags (see section 2.2). A. Coded – enter, edit, or delete the information pertaining to a coded sensor tag (see section 2.2.1) b. Cont one – enter, edit, or delete the information pertain...

  • Page 52

    Vemco – vr100 manual 28 may 2018 46 by default, the minimum number of devices used is three (3) and the maximum is nine (9). These values can be increased if there are a large number of receivers in the area and issues arise when trying to establish communication. The maximum number of slots refers ...

  • Page 53

    Vemco – vr100 manual 28 may 2018 47 6.1.3 transponding menu structure the menu structure within the transponding section of the vr100-200 is listed below with a brief explanation of each feature. Common transponding tasks are explained in detail in section 4.4. Additional transponding tasks are disc...

  • Page 54

    Vemco – vr100 manual 28 may 2018 48 3. Manual scan – lets you send a single search command by specifying the “listening” time for devices. 4. Hydrophone power – view the various power levels at which the vr100-200 can transmit an acoustic (or “talk”) signal. The asterisk (*) is shown under the curre...

  • Page 55

    Vemco – vr100 manual 28 may 2018 49 j. Channel status (hr2 only) – reports the signal and noise values in db for the transponding channel. 2. Settings a. Power level… – refers to the transmit power of the remote receiver unit (vr2tx, vr2ar, or hr2) back to the vr100 at the surface (see section 6.2.1...

  • Page 56

    Vemco – vr100 manual 28 may 2018 50 3. Acoustic release (vr2ar only – see section 4.4.5) a. Release status – reports vr2ar state (i.E. Unarmed), depth, release battery remaining, and horizontal range. B. Arm – alerts vr2ar that an activation command is likely to follow; acts as a safety feature agai...

  • Page 57

    Vemco – vr100 manual 28 may 2018 51 6.2 additional transponding commands the common transponding commands used to communicate with a receiver in the field are explained in section 4.4. The remaining commands, which are explained in this section of the manual, are less commonly used. 6.2.1 reading/ch...

  • Page 58

    Vemco – vr100 manual 28 may 2018 52 6.2.2 setting up sync tag receivers have the ability to transmit a pre-programmed coded id. How this transmission is formatted can be selected by following the steps listed below. The coded id that is transmitted was programmed into the receiver at the time of man...

  • Page 59

    Vemco – vr100 manual 28 may 2018 53 step 5 use the arrow buttons to move the cursor until it covers the desired timing profile. The profile names are shown based on which profile is highlighted by the cursor. Descriptions of the profiles are listed below. 1. Don’t change – settings will remain as th...

  • Page 60

    Vemco – vr100 manual 28 may 2018 54 6.2.3 learning noise levels receivers can report the amount of ambient noise in the area, which may be helpful in deciding if a deployment location is too noisy for reliable tag detections. To get the noise levels in the area, the receiver must first be setup to r...

  • Page 61

    Vemco – vr100 manual 28 may 2018 55 step 7 wait the selected amount of time while noise samples are taken. For the example above, that would be ten minutes. Step 8 press “menu” to return to the noise menu list. Select “stop & read” (#2) to stop recording the noise values and retrieve the information...

  • Page 62: 6.3 Battery

    Vemco – vr100 manual 28 may 2018 56 6.3 battery when the internal gel-cell battery is fully charged, it will power the vr100 receiver for approximately 12 hours with the backlight off and under normal operating conditions. Operating time with the backlight on is shorter. The vr100 can also be powere...

  • Page 63

    Vemco – vr100 manual 28 may 2018 57 6.3.1 charge indicator lights the “charge” indicator lights (also called led – “light emitting diode”) on the vr100’s front panel are the “status” light and the “low batt” light. These lights are to the left of the on and off buttons (see photo below). The meaning...

  • Page 64

    Vemco – vr100 manual 28 may 2018 58 6.3.2 maximizing battery service life the vr100 is powered by a rechargeable lead-acid gel battery. It is normal for the performance of all rechargeable batteries to diminish gradually over time and with use, but with proper care the vr100 battery should provide a...

  • Page 65

    Vemco – vr100 manual 28 may 2018 59 mute audio the audio heard from either the speaker or headphones is muted by pressing the right selection button below the word “mute” in the monitor screen. When the mute button is pressed, the audio is muted and the word “mute” briefly becomes “vol00” to indicat...

  • Page 66

    Vemco – vr100 manual 28 may 2018 60 transmitter id and data transmitter data is displayed as shown in the table below. The sensor data received from a sensor transmitter is displayed in the applicable units. The units shown on the transmitter type line are configurable, as explained in section 2.1.3...

  • Page 67

    Vemco – vr100 manual 28 may 2018 61 6.5 front panel explanations the explanations given below correspond with the photo of the vr100 face plate found in section 1.5.4. Audio speaker the speaker allows the pings received from acoustic tags on the active channel to be heard when the vr100 is in monito...

  • Page 68

    Vemco – vr100 manual 28 may 2018 62 agc button the agc (automatic gain control) button toggles the gain level between automatic (agc) and manual. Use of the button is explained in section 4.2.1. Agc is explained in the glossary (section 9.5). Numeric keypad the numeric keypad is used to enter number...

  • Page 69: 6.6 File Types

    Vemco – vr100 manual 28 may 2018 63 6.6 file types there are four types of files associated with the vr100: log, csv, resource, and raw files. A log file contains the data offloaded from a vr100 and can only be viewed in the vr100 pc software. Comma separated variable (csv) files can be opened in a ...

  • Page 70

    Vemco – vr100 manual 28 may 2018 64 log files can be converted to comma separated variable (.Csv) files using the export command in the vr100 receiver window (see section 6.6.2.2). 6.6.1.1 data in log files the sensor data is listed in either the “data1” column or the “data2” column of the log file....

  • Page 71

    Vemco – vr100 manual 28 may 2018 65 6.6.2.1 create a comma delimited file from data create a comma delimited file from data by following the steps below. 1. Open the vr100 receiver window (see section 3.3) for the receiver containing the data. 2. Select get all data (see section 3.4.1) or get recent...

  • Page 72

    Vemco – vr100 manual 28 may 2018 66 6.6.3.1 open a resource file open a resource file (see section 6.6.3) to retrieve sensor tag setups. A resource file is opened by following the steps below while in the vr100 receiver window. 1. Select tag manager in the settings menu of the vr100 receiver window ...

  • Page 73: 6.7 Time

    Vemco – vr100 manual 28 may 2018 67 6.7 time the date and time are displayed on the vr100’s screen in the format yyyy mm dd hh:mm:ss. Both the date and time can be manually set to any moment on any day, but as soon as the gps locks the date and time will be corrected to the local time based on the c...

  • Page 74: 6.8 Gps

    Vemco – vr100 manual 28 may 2018 68 6.8 gps the gps (global positioning system) works by coordinating position information from multiple satellites. It needs to see three satellites to get a good position fix. Once it sees even one satellite, it can download an almanac from that satellite to get an ...

  • Page 75: 6.9 Detection Parameters

    Vemco – vr100 manual 28 may 2018 69 the accuracy of gps fixes can be improved by a satellite based augmentation system (sbas), which is only available is certain areas of the world. The vr100-200 hardware version supports these sbas services, depending on your geographic location:  waas (north amer...

  • Page 76

    Vemco – vr100 manual 28 may 2018 70 2. Norm: this is the medium level. It rejects some noise but also allows some noise to be mistaken as detections (false-detections). This level will correctly accept more detections than the “near” setting but will still mistake some genuine signal as background n...

  • Page 77: 6.10

    Vemco – vr100 manual 28 may 2018 71 6.10 map updating vemco’s current code map is map-114. If your vr100 does not contain this map, updating the map in the vr100 is as simple as transferring settings from the vr100 pc software to the vr100 receiver. Follow these basic steps to make the transfer. Dow...

  • Page 78: 6.11

    Vemco – vr100 manual 28 may 2018 72 6.11 firmware updating firmware refers to the internal software that operates a vr100 receiver. It is not to be confused with vr100 pc software used to communicate with the receiver. Firmware updates are rare and will occur to either deal with a hardware change or...

  • Page 79

    Vemco – vr100 manual 28 may 2018 73 confirm the current configuration of the firmware and hardware versions of the vr100 receiver are displayed. Click “next” to continue. Step 4 click the browse button to choose the new firmware image file (.Vfa). Only files with the correct extension will be shown....

  • Page 80: Common Questions

    Vemco – vr100 manual 28 may 2018 74 7 common questions 7.1 general questions 7.1.1 what is a code map? There are four default code maps used with vemco coded tags:  map-113 for legacy default for 69khz  map-114 for 69 khz (current)  map-414 for 180 khz and  map-311 for 81 khz. These maps are ins...

  • Page 81

    Vemco – vr100 manual 28 may 2018 75 7.1.2 where do i find the code space? A complete vemco tag id consists of two distinct parts. It is the combination of code space and id that provides all the relevant information needed to identify your transmitter. Code space: a code space provides vemco receive...

  • Page 82

    Vemco – vr100 manual 28 may 2018 76 7.2 vr100 related questions 7.2.1 why do i need to enter the sensor tag information into the receiver? Information must be entered for sensor transmitters for the data to be displayed in the correct units. Data received from coded sensor transmitters can be displa...

  • Page 83

    Vemco – vr100 manual 28 may 2018 77 7.2.6 how do i view a channel’s setup without changing the setup? The channel configuration can be either viewed or edited. How to edit the configuration is explained in section 2.3. How to view the configuration is described in the steps below. From the main scre...

  • Page 84

    Vemco – vr100 manual 28 may 2018 78 7.4 transponding related questions 7.4.1 i can’t communicate with the receiver. What should i do? First, check your location. You may be farther from the receiver’s deployed location than you realized; moving closer would help communications. If that doesn’t help,...

  • Page 85: Troubleshooting

    Vemco – vr100 manual 28 may 2018 79 8 troubleshooting trouble possible solution can’t hear audio signal but detection indicator light is flashing. 1. Volume is too low. 2. Audio is muted (see section 6.4). 3. Headphones are plugged into vr100. Display blinks and receiver makes a repeated clicking so...

  • Page 86: Appendix

    Vemco – vr100 manual 28 may 2018 80 9 appendix 9.1 cleaning instructions clean the vr100 with a damp cloth and mild detergent. Do not use solvents. Do not use abrasive cleaners. Do not allow oils, resins, paints, or similar gummy materials to enter the case vent – these can clog the vent and prevent...

  • Page 87: 9.3 Vr100 Specifications

    Vemco – vr100 manual 28 may 2018 81 9.3 vr100 specifications product name vr100 ultrasonic telemetry & tracking receiver frequency range 12 to 200 khz operating temperature operational between -15°c and +40°c, although battery life will be reduced below 0°c. Recommended operation is between 15°c and...

  • Page 88: 9.4 Warranty and Disclaimer

    Vemco – vr100 manual 28 may 2018 82 9.4 warranty and disclaimer amirix systems inc. Warranty and disclaimer warranty amirix systems inc., doing business under its trade name vemco, provides a one (1) year warranty period for the product from date of shipment. Vemco warrants that on the date of shipm...

  • Page 89: 9.5 Glossary

    Vemco – vr100 manual 28 may 2018 83 9.5 glossary automatic gain control (agc): automatic gain control changes the gain level as the vr100 deems necessary without input from the user. The vr100 uses signal strength to determine if the gain level should increase, decrease, or remain constant. In most ...

  • Page 90

    Vemco – vr100 manual 28 may 2018 84 decibel (db): a decibel is a logarithmic unit used for measuring the strength of a signal. A decibel is one tenth of a "bel". Detection parameters: the detection parameter determines what is identified as a received ping and what is considered background noise (se...

  • Page 91: 9.6 Index

    Vemco – vr100 manual 28 may 2018 85 9.6 index agc, 59, 62, 83 background noise, 59, 83 battery both lights flashing, 57 charge indicator lights, 57 charging, 41 voltage level, 32 case connectors, 5 front panel, 7 introduction, 3 parts, 4 channel, 16, 59, 83 comma separated variable files, 64 communi...