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LeCroy HFP1500 Instruction Manual

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LeCroy
HFP1500
High Frequency Probe
Instruction Manual
Revision F - February, 2008

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Summary of Contents for LeCroy HFP1500

  • Page 1 LeCroy HFP1500 High Frequency Probe Instruction Manual Revision F - February, 2008...
  • Page 2 Spare parts, replacement parts and repairs are warranted for 90 days. In exercising its warranty, 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. However, this will be done only if the product is deter- mined by LeCroy’s examination to be defective due to workmanship or materials, and the defect is not caused by misuse,...
  • Page 3 Product(s) Name: Active Voltage Probe Model Number(s): HFP 3500, HFP2500, HFP1500, HFP1000 including all their options are in conformity with the provisions of the following EC directive(s), including the latest amendments, and with national legislation implementing these directives: 73/23/EEC Low Voltage Directive...
  • Page 4 BLANK PAGE HFP1500-OM-E Rev E...

  • Page 5: Table Of Contents

    Operation Handling the Probe ....................4–1 Connecting the Probe to the Test Instrument ............4–1 Connecting the Probe to the Test Circuit ...............4–1 Operation with a LeCroy Oscilloscope ..............4–1 Offset ........................4–2 Use with Non-LeCroy Instruments .................4–3 Use with Older LeCroy Instruments ...............4–3 High Frequency Measurements Input Loading ......................5–1...
  • Page 6 Specifications Nominal Characteristics ..................9–1 Warranted Characteristics ..................9–1 Typical Characteristics ..................9–1 Environmental Characteristics ................9–2 Physical Characteristics ..................9–2 Compliance and Certifications ................9–4 Appendix A Performance Verification Test Record ..............A–1 Equipment Used: ....................A–1 HFP1500 Test Record ..................A–2 HFP1500-OM-E Rev E...

  • Page 7: Safety Information

    A Caution contains information that should be followed to avoid possible damage to the instrument or the device under test. WARNING A Warning alerts you to a potential hazard. Failure to adhere to the statement in a WARNING message could result in personal injury. 1–1 HFP1500-OM-E Rev E...
  • Page 8 HFP1500 High Frequency Probe The following symbols may appear on the product: CAUTION: Refer to accompanying documents This refers you to additional information contained in this manual. The corresponding information in the manual is similarly denoted. CAUTION: Risk of electric shock This is a reminder that high voltage may be present and that appropriate caution should be taken.

  • Page 9: Overview

    2 Overview PRODUCT DESCRIPTION The 1.5 GHz HFP1500 is a small, high frequency active probe designed to meet today’s increas- ing demand for measurements on a variety of test points. With low input capacitance and high input resistance, circuit loading is minimized.

  • Page 10: Standard Accessories

    Instruction Manual Certificate of Calibration OPTIONAL ACCESSORIES The following items are available as optional accessories for the HFP1500 probe: Micro Clip, 0.5 mm High Frequency Cartridge For part number information for standard and optional accessories refer to Section 6, Care and Maintenance, Replaceable Parts List.

  • Page 11: Features And Accessories

    Features and Accessories 3 Features and Accessories The HFP1500 probe is provided with numerous features and accessories to make probing and connecting to different test points easier than ever. PROBE HEAD The small, low mass probe head is designed for ease of use and high performance.
  • Page 12 HFP1500 High Frequency Probe Straight Tip The straight tip is rugged and designed for general probing. Fits in either probe socket. PACC-PT001, package of 4. Sharp Tip Rugged, titanium tip designed to connect to the small- est vias and small test points. Fits in either probe socket.

  • Page 13: Clips

    A flexible spring connected to a square pin that fits into either of the probe head sockets. Designed to be used as a ground lead, there is a hook on the end of the spring so that it can probe general circuits. PACC-LD001, package of 4. 3–3 HFP1500-OM-E Rev E...

  • Page 14: Leads

    HFP1500 High Frequency Probe Square Pin Ground Spring A flexible spring connected to a square pin that fits into either of the probe sockets. Designed to be attached to a square pin on the circuit under test. PACC-LD002, package of 4.

  • Page 15: Probe Holder

    Additionally, the HFP probe can be mounted horizon- tally or vertically in the FreeHand, giving added mea- surement flexibility. PACC-MS001, package of 1. 3–5 HFP1500-OM-E Rev E...

  • Page 16: Cartridges

    HFP1500 High Frequency Probe To use the FreeHand probe holder 1. Slide the probe cable through the slot on the bottom of the translucent holder section. 2. Slide probe backwards in the probe holder. Installing probe into FreeHand E. Cartridges Replaceable Cartridge If the input tip socket gets damaged, you don’t have to...
  • Page 17 2. Slide the cable strain relief forward to cover the back end of the probe body. Installing new cartridge Note: The cable strain relief is polarized and fits over the probe body in one direction only. 3–7 HFP1500-OM-E Rev E...
  • Page 18 HFP1500 High Frequency Probe BLANK PAGE 3–8 HFP1500-OM-E Rev E...

  • Page 19: Operation

    Using one of the available accessories makes the HFP1500 probe with its small profile and low mass head ideally suited for applications in dense circuitry.

  • Page 20: Offset

    Figure 4-1. Dynamic Range and Offset Effects. With ±8 V dynamic range and ±12 V offset, the HFP1500 has a measurement range of ±20 V. When the HFP1500 is used with a LeCroy oscilloscope equipped with ProBus interface, the probe offset is controlled with the channel OFFSET knob.

  • Page 21: Use With Non-Lecroy Instruments

    USE WITH NON-LECROY INSTRUMENTS The HFP1500 can be used with other instruments with the optional ADPPS power supply. The out- put of the ADPPS must be terminated into 50 Ω.
  • Page 22 HFP1500 High Frequency Probe BLANK PAGE 4–4 HFP1500-OM-E Rev E...

  • Page 23: High Frequency Measurements

    For example, to obtain the shortest possible ground lead when measuring IC related signals, attach a small piece of copper clad material to the top of the IC package and connect this to the 5–1 HFP1500-OM-E Rev E...

  • Page 24: Capacitive Loading

    HFP1500 High Frequency Probe package grounding wires. Using the shortest ground lead and input lead available makes probing signals on the package easier and makes for the shortest lead length for the best signal fidelity. To illustrate how dramatic this effect is, we will work a simple example.
  • Page 25 As an example: At 851 MHz, where the probe input impedance has reduced to 267 Ω, and a source resistance of 250 Ω the probe output amplitude is reduced to: × ----------------------- - 0.52 V 5–3 HFP1500-OM-E Rev E...
  • Page 26 HFP1500 High Frequency Probe BLANK PAGE 5–4 HFP1500-OM-E Rev E...

  • Page 27: Care And Maintenance

    The HFP1500 probe utilizes fine pitch surface mount devices. It is therefore impractical to attempt to repair in the field. Defective probes must be returned to a LeCroy service facility for diagnosis and exchange. A defective probe under warranty will be replaced with a factory refurbished probe.

  • Page 28: Replacement Parts

    5. Package the probe case in a cardboard shipping box with adequate padding to avoid dam- age in transit. 6. Mark the outside of the box with the shipping address given to you by the LeCroy repre- sentative; be sure to add the following: •...
  • Page 29 LeCroy P/N Quantity Straight Tip PACC-PT001 Sharp Tip PACC-PT002 IC Lead Tip PACC-PT003 SMD Discrete Tip PACC-PT004 Bent Sharp Tip PACC-PT005 Micro Clip PACC-CL001 Clip PK006-4 Ground Spring with Hook PACC-LD001 Square Pin Ground Spring PACC-LD002 6–3 HFP1500-OM-E Rev E...
  • Page 30 HFP1500 High Frequency Probe Replacement Item LeCroy P/N Quantity Offset Pin 405400003 Short Right Angle Lead PACC-LD003 Long Right Angle Lead PACC-LD004 Short Single Lead PACC-LD005 Long Single Lead PACC-LD006 FreeHand Probe Holder PACC-MS001 Replaceable Cartridge PACC-MS002 Low C Cartridge...

  • Page 31: Performance Verification

    Performance Verification 7 Performance Verification This procedure can be used to verify the warranted characteristics of the HFP1500 High Fre- quency Probe. The recommended calibration interval for the model HFP1500 is one year. The complete perfor- mance verification procedure should be performed as the first step of annual calibration. Test results can be recorded on a photocopy of the Test Record provided in Appendix A at the end of the manual.

  • Page 32: Preliminary Procedure

    1. Connect the HFP1500 probe to the female end of the ProBus Extension Cable. Connect the male end of the ProBus Extension Cable to channel 1 of the oscilloscope. 2. Turn the oscilloscope on and allow at least 30 minutes warm-up time for the HFP1500 and test equipment before performing the Verification Procedure.

  • Page 33: Functional Check

    • From the Menu buttons press FROM DEFAULT SETUP. 2. Select Channel 1 and enter the Coupling menu. 3. Verify that Probe sensed (HFP1500) is displayed on the right hand menu. 4. If the trace colors have been reassigned or you are unsure, restore the default colors by pressing the following menus: DISPLAY, More Display Setup, Color Scheme and in the Color Scheme menu press 1.

  • Page 34: A. Output Zero Voltage

    HFP1500 High Frequency Probe LeCroy Oscilloscope Precision 50Ω Terminator ProBus Extender Cable HFP1500 Probe Figure 7-1. Output Zero Voltage Test Setup 3. Set the OFFSET on the oscilloscope to zero, as indicated by on-screen display. 4. Set the DMM to read DC Volt on the most sensitive range.

  • Page 35: Offset Accuracy

    6. Adjust the power supply to an output of 10.0 V ± 100 mV as indicated on the DMM. 7. Record the DMM reading, which should be a negative number, to 10 mV resolution as ’Power Supply Negative Output Voltage’ in the Test Record. 7–5 HFP1500-OM-E Rev E...
  • Page 36 18. Using the oscilloscope’s OFFSET knob, set the probe offset to 0 V, as indicated in the on- screen display. 19. Remove the dual banana plug adapter with the HFP1500 attached from the power supply and reconnect to the supply but now with the grounded side of the banana plug (and grounded socket of the probe head) connected to the negative terminal of the power sup- ply output.

  • Page 37: Lf Attenuation Accuracy

    C-6. Subtract 1 from this ratio and multiply by 100% to get the error in percent. Measured Output Voltage ⎛ ⎞ × ------------------------------------------------------------- - 1 Error – 100% ⎝ ⎠ Expected Output Voltage 7–7 HFP1500-OM-E Rev E...
  • Page 38 Test record. 22. Verify that the mid range gain error is less than ±1.0% This completes the Performance Verification of the HFP1500. Complete and file the Test Record, as required to support your internal calibration procedure. Apply suitable calibration label to the HFP1500 housing as required.

  • Page 39: Adjustment Procedure

    If the probe cannot be adjusted to meet the Performance verification limits, repair may be neces- sary. To assure probe accuracy, check the calibration of the HFP1500 every 1000 hours or once a year if used infrequently. Before calibration, thoroughly clean and inspect the probe as outlined in the Care and Maintenance section.

  • Page 40: Preliminary Procedure

    2. Gently pull on the probe cable to slide the circuit board assembly from the metal hous- ing. 3. Connect the HFP1500 probe to the female end of the ProBus extension cable, being careful to line up all six pins of the probe connector. Connect the male end of the Pro- Bus extension cable to channel 1 of the oscilloscope.
  • Page 41 6. Adjust OFFSET ZERO on the board until the DMM reads 0 V ±100 µV. Refer to figure 8-2 for adjustment location. 7. Leave the setup connections in place for the next step. OUTPUT ZERO OUTPUT ZERO OFFSET RANGE OFFSET RANGE Figure 8-2a. Adjustment Locations S/N 1000 and higher. 8–3 HFP1500-OM-E Rev E...

  • Page 42: Adjust Offset Range

    BNC to dual banana plug adapter to the male end of the BNC tee. 2. Carefully insert Straight Tips (supplied in the accessory kit) into the HFP1500 probe head sockets. Attach the red lead of the mini-grabber to the signal input and the black lead to the ground input of the probe.
  • Page 43 12. Repeat steps A-3 through A-7 of the Adjust Offset Zero procedure. 13. Disconnect the probe from the ProBus extender and re-install the circuit board into the probe case, being careful to align the ProBus interface connector with the opening on the other end of the case. 8–5 HFP1500-OM-E Rev E...

  • Page 44: Verify Calibration

    HFP1500 High Frequency Probe C. Verify Calibration Repeat the Performance Verification procedure to ensure compliance with the warranted specifi- cations. Apply a calibration sticker, if required, in accordance with your quality control procedures. 8–6 HFP1500-OM-E Rev E...

  • Page 45: Specifications

    Attenuation Output Connector ProBus Interface ProBus Oscilloscope Full Compatibility LeCroy oscilloscope with firm- ware version 8.7.0 or higher. Subject to input voltage vs. frequency derating. See figure 9-1. WARRANTED CHARACTERISTICS Warranted characteristics are parameters with guaranteed performance. Unless otherwise noted, tests are provided in the Performance Verification Procedure for all warranted specifications.

  • Page 46: Environmental Characteristics

    HFP1500 High Frequency Probe ENVIRONMENTAL CHARACTERISTICS Temperature, operating 0 °C to 50 °C Temperature, non-operating -40 °C to 71 °C Relative Humidity 80% max up to 31 °C, decreas- ing linearly to 45% max at 50 °C PHYSICAL CHARACTERISTICS Probe Head Size: Length 61 mm (2.4 in)

  • Page 47: Compliance And Certifications

    Electromagnetic Emissions: EN 55011/A2:2002 Class A Radiated Emissions. Electromagnetic Immunity: EN 61000-4-2/A2:2001 Electrostatic Discharge. (Air/Contact Discharge: 8 kV/4 kV) EN 61000-4-3/A1:2003 RF Radiated Electromagnetic Field (80 MHz to 1 GHz; 3 V/m) 9–3 HFP1500-OM-E Rev E...
  • Page 48 HFP1500 High Frequency Probe Toxic or Hazardous Substances and Elements Part Name Lead Mercury Cadmium Hexavalent Polybrominated Polybrominated Chromium Biphenyls Diphenyl Ethers (Pb) (Hg) (Cd) (PBDE) (PBB) PCBAs Mechanical Hardware Sheet Metal Plastic Parts Protective Case Cable Assemblies Probe Tips O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement specified in SJ/T11363-2006.

  • Page 49: Performance Verification Test Record

    This record can be used to record the results of measurements made during the performance ver- ification of the HFP1500 High Frequency Probe. Photocopy this page and record the results on the copy. File the completed record as required by applicable internal quality procedures.

  • Page 50: Hfp1500 Test Record

    HFP1500 High Frequency Probe HFP1500 TEST RECORD Step Description Intermediate data Test Result Output Zero Voltage A-5 Output Zero Voltage (Test limit ≤± 800 µV) _____________ V Offset Accuracy B-7 Power Supply Negative Output Voltage ________________ V B-10 Expected Negative Output Voltage...

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