Teledyne Lecroy AP034 Operator's Manual
  1. Manuals
  2. Brands
  3. Teledyne Lecroy Manuals
  4. Test Equipment
  5. AP034
  6. Operator's manual

Teledyne Lecroy AP034 Operator's Manual

Active differential probe
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Electronic Component Distributor. Source::Teledyne LeCroy
P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A
Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354
Operator's
Manual
AP034 Active
Differential Probe

Advertisement

Table of Contents
loading

Related Manuals for Teledyne Lecroy AP034

Summary of Contents for Teledyne Lecroy AP034

  • Page 1 Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual AP034 Active Differential Probe...

  • Page 2: Web:http://Www.hotenda.cn E-Mail:sales@Hotenda.cn Phone

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354...
  • Page 3 Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 AP034 Active Differential Probe Operator’s Manual May 2013...
  • Page 4 Spare parts, replacement parts and repairs are warranted for 90 days. In exercising its warranty, Teledyne LeCroy, at its option, will either repair or replace any assembly returned within its warranty period to the Customer Service Department or an authorized service center.

  • Page 5: Table Of Contents

    Grounding the Probe .................... 10 Selecting the Proper Range .................. 11 Operation with Teledyne LeCroy Oscilloscopes ........... 12 Using AP034 with the APPPS Power Supply ............12 Adding Offset......................14 Autobalance ......................15 Designing Test Fixtures for the AP034 Probe ............15 Maintenance .....................
  • Page 6 Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 AP034 Active Differential Probe Matching Procedure for ÷10 Plugs ..............22 Equipment Required .....................22 Procedure ......................23 Performance Verification ................... 25 Test Equipment Required ..................25 Preliminary Procedure ..................27...

  • Page 7: Safety Instructions

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual Safety Instructions This section contains instructions that must be observed to keep this oscilloscope accessory operating in a correct and safe condition. You are required to follow generally accepted safety procedures in addition to the precautions specified in this section.

  • Page 8: Operating Environment

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 AP034 Active Differential Probe Do not overload. To avoid electric shock, do not apply any potential that exceeds the maximum rating of the probe and/or the probe accessory, whichever is less. Observe all terminal ratings of the instrument before connecting the probe.

  • Page 9: Overview

    ProBus interface. Applications The AP034 is ideal for acquiring high speed differential signals such as those found in disk drive read channels, differential LAN, video, etc. It can also be used with spectrum analyzers to acquire signals in some RF systems (for example, balanced IF mixers in hand held cellular telephones).

  • Page 10: Standard Accessories

    8.1.0 or higher loaded; all X-Stream oscilloscopes are compatible. The software version installed in a Teledyne LeCroy oscilloscope can be verified by pressing the SHOW STATUS button on the front panel (where available), then selecting the System menu choice. The probe can be used with earlier versions of software;...

  • Page 11: Specifications

    Output impedance is 50 Ω, intended to drive 50 Ω. Add uncertainty of termination impedance to accuracy. Teledyne LeCroy measures CMRR with a fixture that connects the probe tip ground to the signal source ground. This method is necessary to obtain a reproducible CMRR measurement. Often users leave the probe tip ungrounded when measuring high frequency signals.
  • Page 12 P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 AP034 Active Differential Probe probe tip depends on proximity to probe cable ground, and is therefore non-reproducible. Teledyne LeCroy has chosen to use a reproducible method of measurement, rather than obtain a more optimistic measurement.
  • Page 13 Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual Figure 1, Typical CMRR Graphs General Characteristics Temperature: 0° to 50° C Operating -40° to 75° C Storage Input Connectors: Compatible with 0.025” (0.635 mm) square pins.

  • Page 14: Operation

    (ESD). Keep in mind that this is an active probe, and it should be handled carefully to avoid damage. When using the AP034, you are advised to take precautions against potential instrument damage due to ESD.
  • Page 15 The attenuators supplied with model AP033 probes prior to the introduction of the AP034 did not include the model number on the label. When using an external attenuator with the AP034 Active Differential Probe, make sure it is labeled “AP034.”...

  • Page 16: Probe Input Loading

    Attaching any probe to a test circuit will add some loading. In most applications, the high impedance of the AP034 Active Differential Probe inputs imparts an insignificant load to the test circuit. However at very high frequencies, the capacitive reactance of the probe’s input capacitance may load the circuit enough to affect measurement accuracy.

  • Page 17: Selecting The Proper Range

    ADPPS power supply and the test instrument. Selecting the Proper Range The AP034 Active Differential Probe has a fixed gain of X1 (unity). Use of the ÷10 or ÷20 external attenuators reduces the amplitude of the input signal when it is necessary to extend the dynamic operating range of the probe.

  • Page 18: Operation With Teledyne Lecroy Oscilloscopes

    AP034 specification. To prevent signal distortion, it is necessary to keep the AP034 output less than 400 mV at all times. With the ProBus interface (see note on following page), the oscilloscope OFFSET control actually controls the AP034 offset.
  • Page 19 Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual The AP034 offset allows you to measure signals up to 2.0 V (1.6 V of offset plus 400 mV of output signal). With accessory plug-on attenuators, the effective offset is increased, and input signal 0f 20V (÷10) or 40 V (÷20) may be view ed.

  • Page 20: Adding Offset

    FFSET Figure 4, Effect of Differential Offset When the AP034 is used with a Teledyne LeCroy oscilloscope equipped with a ProBus interface and software versions 7.6.0 to 8.0.0, the probe offset must be controlled through either the Probe Offset menu selection in the COUPLING screen, or the buttons on the probe body. The channel control does not change the probe offset and, therefore, should not be used.

  • Page 21: Autobalance

    “COUPLING” menu for the channel the probe is connected to. If the probe is being used with the ADPPS power supply, remove the input signal, then push and hold both OFFSET buttons for two seconds. The AP034 must be terminated into 50Ω for successful Autobalance.

  • Page 22: Maintenance

    Service Strategy The AP034 circuits utilize fine pitch surface mount devices; it is, therefore, impractical to attempt component-level repair in the field. Defective probes must be returned to a Teledyne LeCroy 922261-00 Rev A...

  • Page 23: Troubleshooting

    7. Is a ProBus Power Supply Overload error message displayed? If so, remove all other ProBus accessories from the oscilloscope. Is the message still displayed? If so, remove the AP034. Is the message still displayed? If so, the oscilloscope should be returned for service.
  • Page 24 Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 AP034 Active Differential Probe B. Incorrect Frequency Response Possible causes are a defective probe or oscilloscope, poor connections, or poor grounding. 1. Verify that the BW limiting of the oscilloscope is off.

  • Page 25: Returning A Probe

    5. Package the probe case in a cardboard shipping box with adequate padding to avoid damage in transit. 6. Mark the outside of the box with the shipping address given to you by the Teledyne LeCroy representative; be sure to add the following: ...

  • Page 26: Replacement Parts

    The probe connection accessories, and other common parts can be ordered through the regional customer care centers. Refer to Table 3 for Teledyne LeCroy part numbers. Defective probes can be replaced on an exchange basis. The replacement exchange probe will have been factory repaired, inspected and calibrated to the same standards as a new product.

  • Page 27: Web:http://Www.hotenda.cn E-Mail:sales@Hotenda.cn Phone

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual Table 3, Replaceable Part Numbers Teledyne LeCroy Reference Description Qty. Part Number 529-304-001 Plastic probe tip housing Top 377-000-007 Teledyne LeCroy AP034 Probe Tip Label...

  • Page 28: Matching Procedure For ÷10 Plugs

    Therefore, the required test equipment does not need to be calibrated. NOTE: The AP033 and AP034 Active Differential Probes have different input capacitance. The  10 Plug-on attenuator supplied with model AP033 cannot be properly adjusted for use with model AP034.

  • Page 29: Procedure

    Insert the pin into a short length of rigid plastic tubing to serve as a handle. Procedure 1. Attach the AP034 to the test oscilloscope. If the test oscilloscope is not equipped with ProBus, use the ADPPS to provide power for the AP034.
  • Page 30 13. Set the signal generator frequency to about 50 Hz, and the output amplitude to about 10 V. 14. Set the test oscilloscope Volts/Div to 20 mV (for Teledyne LeCroy oscilloscopes with ProBus) or 2 mV/Div when using the ADPPS with an oscilloscope without scale factor correction; and set the time scale to 2 ms/Div.

  • Page 31: Performance Verification

    Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual Performance Verification This procedure can be used to verify the warranted characteristics of the AP034 Active Differential Probe. You can do the performance verification without removing the instrument covers and exposing yourself to hazardous voltages.
  • Page 32 Pomona 1269 NOTE: If a Teledyne LeCroy ProBus equipped oscilloscope is not available, you may use an alternate oscilloscope that meets the other minimum specifications listed, and the model ADPPS power supply, to perform the performance verification procedure. The input termination of the alternate oscilloscope must be set to 50 Ω...

  • Page 33: Preliminary Procedure

    Connect the male end of the ProBus extension cable to Channel 1 of the oscilloscope. 2. Turn the oscilloscope on and allow at least a 30- minutes warm-up time for the AP034 and test equipment before performing the Verification Procedure.
  • Page 34 10. Carefully align the four pins that correspond to the Differential Drive No Termination portion of the AP03x- CF01 Calibration Fixture with the input receptacles in the AP034 probe head. Press the probe into the fixture to fully engage the pins.
  • Page 35 3. Set the oscilloscope to display channel 1. In the oscilloscope Channel 1 “COUPLING” menu, set Coupling to DC 1 MΩ, and Global BWL to Off. Autobalance the AP034 by pressing the AUTOBALANCE menu button twice. Set the oscilloscope trigger mode to AUTO.
  • Page 36 Function Generator will be used in place of the high-frequency sine wave generator for the low frequency CMRR test. 1. Carefully move the AP034 probe head from the Common Mode Drive 50 ohm Termination connector of the AP033/AP034 Calibration Fixture to the Common Mode Drive No Termination connector.
  • Page 37 CAUTION: Make sure that the Common Mode Drive No Termination connection is used. Prolonged application of the power levels used in the low frequency common mode test may damage the termination resistance in either 50 ohm Termination input of the AP033/AP034 calibration fixture.
  • Page 38 16. Verify that the Common Mode Rejection Ratio at 1 MHz is greater than 100:1 (40 dB). 17. Remove all cables and test fixtures from the AP034 probe. This completes the Performance Verification of the AP034. Complete and file the results recorded in the AP034 Performance Verification Test Record, as required by your quality procedures.
  • Page 39 Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual AP034 Model: Serial Number: Asset or Tracking Number: Date: Technician: CALIBRATION MODEL SERIAL NUMBER DUE DATE OSCILLOSCOPE DIGITAL MULTIMETER LEVELED SINE WAVE GENERATOR...

  • Page 40: Adjustment Procedure

    CAUTION: The adjustment procedure will require removal of the probe covers. These covers are part of the ESD protection system of the AP034 Active Differential Probe. To protect the probe, you should perform the entire procedure on a static dissipating work surface Wear an antistatic grounding wrist strap and follow standard static control procedures.

  • Page 41: Test Equipment Required

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual Test Equipment Required The table on the next page lists the test equipment and accessories, or their equivalents, that are required for complete calibration. Specifications given for the test equipment are the minimum necessary for accurate calibration.
  • Page 42 Low Capacitance Screwdriver NOTE: If a Teledyne LeCroy ProBus equipped oscilloscope is not available, you may perform the adjustment procedure with an alternate oscilloscope that meets the other Minimum Specifications, and the model ADPPS power supply. The input termination of the oscilloscope must be set at 50 Ω...

  • Page 43: Preliminary Procedure

    4. Connect the AP034 Active Differential Probe output to the female end of the ProBus Extension Cable. Be careful to align the ProBus pins with the corresponding connector correctly. Connect the male end of the ProBus Extension Cable to Channel 1 of the oscilloscope.

  • Page 44: Procedure

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 AP034 Active Differential Probe Procedure A. Adjust Coarse DC Balance (R226) 1. If necessary, set the probe offset to 0.000 V by rotating the O...
  • Page 45 5. Short the output BNC connector by reconnecting the cable to the SHORT connector on the AP033/AP034 Calibration Fixture. The SHORT connector is the only BNC connector on the AP033/AP034 Calibration Fixture that does not have corresponding input pins for the probe tip.
  • Page 46 9. Carefully align the four pins that correspond to the Common Mode Drive No Termination portion of the AP033/AP034 Calibration Fixture with the input receptacles in the AP034 probe head. Press the probe into the fixture to fully engage the pins.
  • Page 47 Set the BWL to 20 or 25 MHz. Adjust the OFFSET to 0.0 mV 3. Carefully move the AP034 probe tip from the Common Mode Drive No Termination position of the AP033/AP034 Calibration Fixture to the Differential Drive No Termination position.
  • Page 48 6. Set the DC Voltage Source to read as close as possible to +1.600 V on the DMM. 7. Autobalance the AP034 by pressing the AUTOBALANCE menu button located in the “COUPLING” menu twice, or by pressing and holding both probe offset buttons for at least two seconds.
  • Page 49 Fixture connected to the AP034 for the next step. E. Adjust GAIN (R322C) 1. Set the AP034 offset to 0.000 V by rotating the OFFSET knob in the CHANNEL section of the oscilloscope. 2. Disconnect the BNC cable from the oscilloscope end of the ProBus extension cable.
  • Page 50 2. Remove the BNC cable from the Differential Drive 50 ohm Termination connector of the AP033/AP034 Calibration Fixture. Connect one end of the BNC cable to the Common Mode Drive 50 ohm Termination connector of the AP033/AP034 Calibration fixture. Connect the other end of the cable to the female end of a BNC Tee adapter.
  • Page 51 Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual 3. Set the oscilloscope display to channel 4, coupling to DC1MΩ , vertical scale factor to 200 mV/div, and the trigger source to channel 4. Adjust the oscilloscope trigger level as necessary for a stable display.
  • Page 52 2. Perform the Attenuator Matching Procedure listed on page 5-8. Apply calibration seals in accordance with your quality procedures. This concludes the Adjustment Procedure. Repeat the Performance Verification procedure to complete the calibration of the AP034. This concludes the Adjustment Procedure. Repeat the Performance Verification procedure to complete the calibration of the AP034.

  • Page 53: Reference Information

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual Reference Information Differential Mode and Common Mode Differential probes amplify the voltage difference that appears between the + and – inputs. This voltage is referred to as the Differential Mode or Normal Mode voltage.

  • Page 54: Common Mode Rejection Ratio

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 AP034 Active Differential Probe Common Mode Rejection Ratio The ideal differential probe or differential amplifier would amplify only the differential mode voltage component and reject all of the common mode voltage component. Real differential probes and amplifiers are less than ideal, so a small portion of the common mode voltage component appears in the output.

  • Page 55: Certifications

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual Certifications This section certifies the probe’s Electromagnetic Compatibility (EMC), Safety and Environmental compliance. EMC Compliance EC D - EMC ECLARATION OF ONFORMITY The probe meets intent of EC Directive 2004/108/EC for Electromagnetic Compatibility.

  • Page 56: Safety Compliance

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 AP034 Active Differential Probe —EMC & N USTRALIA EALAND ECLARATION OF ONFORMITY The probe complies with the EMC provision of the Radio Communications Act per the following...

  • Page 57: Environmental Compliance

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 Operator’s Manual Environmental Compliance ANDLING The probe is marked with this symbol to indicate that it complies with the applicable European Union requirements to Directives 2002/96/EC and 2006/66/EC on Waste Electrical and Electronic Equipment (WEEE) and Batteries.

  • Page 58: Contact Teledyne Lecroy

    Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354 AP034 Active Differential Probe Contact Teledyne LeCroy Teledyne LeCroy Service Centers United States and Canada - United States - Protocol Solutions Group World Wide Corporate Office...
  • Page 59 Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354...
  • Page 60 Electronic Component Distributor. Source::Teledyne LeCroy P.N:AP034-DA10 Desc:DIV BY 10 ATTENUATOR PLUG ON A Web:http://www.hotenda.cn E-mail:sales@hotenda.cn Phone:(+86) 075583794354...

Table of Contents