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LeCroy DA18000AC Instruction Manual

Manual is about: Differential Amplifier

Summary of DA18000AC

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    Lecroy da18000ac differential amplifier instruction manual revision a – june 2006.

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    Lecroy corporation 700 chestnut ridge road chestnut ridge, ny 10977-6499 tel: (845) 578-6020, fax: (845) 578-5985 internet: www.Lecroy.Com warranty lecroy warrants this oscilloscope accessory for normal use and operation within specification for a period of one year from the date of shipment. Spare ...

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    Da18000ac-om-e rev a iii declaration of conformity according to iso/iec guide 22 and en 45014:1998 manufacturer’s name: lecroy corporation manufacturer’s address: 700 chestnut ridge road chestnut ridge, ny 10977 usa herewith declare that product(s) name: differential probe model number(s): da18000ac...

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  • Page 5: Table of Contents

    Da18000ac-om-e rev a v table of contents safety information ............................................................................. 1-1 safety symbols ...........................................................................................1-1 operator safety ...................................

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    Da18000ac differential amplifier vi da18000ac-om-e rev a preliminary procedure .......................................................................... 7-2 verification procedure ......................................................................... 7-2 rise time (20-80%) .........................

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    Safety information da18000ac-om-e rev a 1-1 1 safety information safety symbols the following symbols appear on the da18000ac differential amplifier or in this manual and alert the customer to important safety considerations. Refer to the accompanying information or document to protect against perso...

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    Da18000ac differential amplifier 1-2 da18000ac-om-e rev a handle the probe with care as it has sharp tips that may cause bodily injury if not handled properly. Do not use the amplifier in wet or explosive atmospheres. Do not use the amplifier if any part is damaged. All maintenance should be referre...

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    Overview da18000ac-om-e rev a 2-1 2 overview description the da18000ac differential amplifier is a very high bandwidth differential amplifier with 50 Ω inputs and high common mode rejection, and is designed to be used exclusively with the sda 18000 serial data analyzer. The amplifier contains common...

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    Da18000ac differential amplifier 2-2 da18000ac-om-e rev a blank page.

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    Components and accessories da18000ac-om-e rev a 3-1 3 components and accessories standard accessories type k input leads a matched pair of 50 Ω type k input leads is provided for direct cable connection to female type k connectors of the amplifier. Type k ÷2 attenuator the type k attenuator can be u...

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    Da18000ac differential amplifier 3-2 da18000ac-om-e rev a blank page.

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    Operation da18000ac-om-e rev a 4-1 4 operation handling the amplifier the da18000ac differential amplifier is a precision test instrument; exercise care when handling and storing the amplifier. Always handle the amplifier by the body. Avoid putting excessive strain on the attached cables or exposing...

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    Da18000ac differential amplifier 4-2 da18000ac-om-e rev a to attach the amplifier to the lecroy oscilloscope, align the interface connector with the input connector and push the interface toward the oscilloscope. A click will be heard when the amplifier’s interface latches to the oscilloscope. This ...

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    Operation da18000ac-om-e rev a 4-3 control through the oscilloscope’s interface can be found in the screen menu of the channel to which the amplifier is connected. Touching the tab indicating the attached amplifier (in this case da18000ac) will activate the amplifier menu screen. Figure 4-5. The amp...

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    Da18000ac differential amplifier 4-4 da18000ac-om-e rev a use of dc ÷2 attenuator the ÷2 attenuator should be used when the common mode or differential voltage of the cir- cuit under test is unknown or exceeds the maximum voltage specified. (see section 9, spec- ifications). The use of the attenuato...

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    Care and maintenance da18000ac-om-e rev a 5-1 5 care and maintenance cleaning the exterior of the amplifier and cable should be cleaned using a soft cloth only moistened with water or isopropyl alcohol. The use of abrasive agents, strong detergents or other sol- vents may damage the exterior of the ...

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    Da18000ac differential amplifier 5-2 da18000ac-om-e rev a 6. Mark the outside of the box with the shipping address given to you by the lecroy rep- resentative; be sure to add the following: • attn: • fragile 7. Insure the item for the replacement cost of the product. 8. Ship the package to the appro...

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    Reference information da18000ac-om-e rev a 6-1 6 reference information differential mode and common mode differential amplifiers sense the voltage difference which appears between the + input and – input. This voltage is referred to as the differential mode or normal mode voltage. The volt- age comp...

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    Da18000ac differential amplifier 6-2 da18000ac-om-e rev a some amplitudes are specified as "peak to peak." the differential amplifier peak-to-peak range will be twice the peak differential mode range specification as, at any instant in time, the maximum voltage amplitude signal would be one-half of ...

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    Reference information da18000ac-om-e rev a 6-3 mode component increases, the effects of stray parasitic capacitance and inductance in determining the ac component becomes more pronounced. The cmrr becomes smaller as the frequency increases. Hence the cmrr is usually specified in a graph of cmrr ver-...

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    Da18000ac differential amplifier 6-4 da18000ac-om-e rev a blank page.

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    Performance verification da18000ac-om-e rev a 7-1 7 performance verification introduction this procedure can be used to verify the warranted characteristics of the da18000ac differ- ential amplifier. The recommended calibration interval for this amplifier is one year. Test results can be recorded on...

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    Da18000ac differential amplifier 7-2 da18000ac-om-e rev a preliminary procedure 1. Allow at least 20 minutes warm-up time for the da18000ac differential amplifier and test equipment before performing the verification procedure. 2. Turn on the other test equipment and allow these to warm up for the t...

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    Performance verification da18000ac-om-e rev a 7-3 figure 7-1. Timebase menu h. Connect the st-20 tdr coaxial cable from channel 1 of the we 9000 via the lpa–k adapter to channel 1 of the sda 18000. Be sure to properly torque all connectors (8 in.-lbs.). I. Set the sda 18000 to channel 1 and the time...

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    Da18000ac differential amplifier 7-4 da18000ac-om-e rev a figure 7-2. Math menu setup k. Set a measurement function to measure rise 20-80% (figure 7-3). Figure 7-3. Measure menu setup.

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    Performance verification da18000ac-om-e rev a 7-5 l. Record the measured 20-80% rise time as “source rise time” (t source ) in the test record (figure 7-4). Only the positive edge is measured. The difference in rise time between the positive edge and the negative edge of the std-20 tdr is less than ...

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    Specifications da18000ac-om-e rev a 8-1 8 specifications the specifications are valid for probes when the following conditions have been met: • the probe has been operating for at least 30 minutes in an environment, which is within the operating environmental specifications. • the probe has been cal...

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    Da18000ac differential amplifier 8-2 da18000ac-om-e rev a typical characteristics typical characteristics are parameters with no guaranteed performance. Tests for typical characteristics are not provided in the performance verification procedure. Bandwidth (system) 1 100 khz to 18 ghz (with sda 1800...

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    Specifications da18000ac-om-e rev a 8-3 figure 8-1. Typical da18000ac cmrr environmental characteristics the environmental characteristics are tested to specification mil-prf-28800f class 4 temperature (operating) 0 °c to 40 °c temperature (non-operating) -40 °c to 71 °c humidity (operating) 5% to 8...

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    Da18000ac differential amplifier 8-4 da18000ac-om-e rev a compliance and certifications ce compliant ec declaration of conformity the da18000ac meets the intent of the european council directive 73/23/eec for product safety and 89/336/eec for electromagnetic compatibility. This declaration is based ...

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    Appendix a da18000ac-om-e rev a a-1 a appendix a performance verification test record this record can be used to record the results of measurements made during the perfor- mance verification of the da18000ac differential amplifier. Photocopy this page and record the results on the copy. File the com...

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