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Adjustment Procedure

HFP1500-OM-E Rev E

8–5

Figure 8-3. Offset Range Adjustment setup.

7. Remove the banana plug adapter from the DMM connect the precision 50

Ω

termina-

tor into the DMM Input. Make sure the side of the banana plug corresponding to the
BNC shield (marked ’GROUND’) is connected to the

COMMON

input of the

DMM.

8. Verify that the display for channel 1 is turned on. Set the oscilloscope

OFFSET

knob

to –10.00 V. as read on the oscilloscope screen.

9. Set the DMM to read DC Volt on the most sensitive range.

10. Subtract 10.0 V from the power supply output voltage recorded in step B-7. Be sure to

keep track of the sign of the result.

11. Adjust

OFFSET RANGE

until the DMM reads the same voltage ±1 mV as calculated

in step B-11. Be sure the sign agrees.

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.

Power Supply

LeCroy Oscilloscope

Precision 50

Ω

Terminator

ProBus Extender Cable

HFP1500 Probe

DMM

Содержание HFP1500

Страница 1: ...LeCroy HFP1500 High Frequency Probe Instruction Manual Revision F February 2008 ...

Страница 2: ...lar purposes or use LeCroy shall not be liable for any special incidental or consequential damages whether in contract or otherwise Corporate Headquarters 700 Chestnut Ridge Road Chestnut Ridge NY 10977 6499 Tel 845 578 6020 Fax 845 578 5985 Internet www lecroy com Copyright 2008 by LeCroy Corporation All rights reserved LeCroy ActiveDSO JitterTrack WavePro WaveMaster WaveSurfer WaveLink WaveExper...

Страница 3: ...for electrical test and measurement and that conformity with Council Directive 89 336 EEC is based on EN 61326 A3 2003 EMC requirements for electrical equipment for measurement control and laboratory use Emissions EN 55011 A2 2002 Conducted and Radiated Emissions Immunity EN 61000 4 2 A2 2001 Electrostatic Discharge EN 61000 4 3 A1 2003 RF Radiated Electromagnetic Field EN 61000 4 4 2004 Electrica...

Страница 4: ...iv HFP1500 OM E Rev E BLANK PAGE ...

Страница 5: ...s 3 3 C Leads 3 4 D Probe Holder 3 5 E Cartridges 3 6 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 Inductive Loading Lead Length 5 1 Capacitive Loa...

Страница 6: ...e Introduction 8 1 Test Equipment Required 8 1 Preliminary Procedure 8 2 Procedure 8 3 A Adjust Output Zero Voltage 8 3 B Adjust Offset Range 8 4 C Verify Calibration 8 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 Verifica...

Страница 7: ...the protection mechanisms Do not apply a potential to any input that exceeds the maximum rating of that input Section 9 Specifications When measuring high frequency signals be sure to comply with the voltage vs frequency derating curve Section 9 Specifications Do not use in wet or explosive atmospheres Do not use the probe if any part is damaged All maintenance should be referred to qualified ser ...

Страница 8: ...o additional information contained in this manual The corresponding information in the manual is similarly denoted This is a reminder that high voltage may be present and that appropriate caution should be taken This is the symbol for earth ground CAUTION Refer to accompanying documents CAUTION Risk of electric shock ...

Страница 9: ...nected eliminating the need for color bands or other markers With the ProBus interface the HFP1500 becomes an integral part of the oscilloscope The probe can be controlled from the oscilloscope s front panel The oscilloscope provides power to the probe so there is no need for a separate power supply or batteries When used in combination with an ADPPS power supply the HFP1500 probe can be used with...

Страница 10: ... Offset Pin 2 Short Right Angle Lead 2 Long Right Angle Lead 2 Short Single lead 2 Long Single Lead 2 FreeHand Probe Holder 1 Replaceable Cartridge 1 Soft Accessory Case 1 Instruction Manual 1 Certificate of Calibration 1 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 st...

Страница 11: ...et gets dam aged The ground socket will accept several different ground leads to provide a short ground path for high frequency performance AUTOCOLOR ID The AutoColor ID consists of an LED inside the probe head which illuminates the probe body in the default trace color of the channel to which the probe is con nected The AutoColor ID will only function when the probe is connected to a LeCroy oscil...

Страница 12: ...Covered in insulation on all sides except for a small edge this tip was designed to prevent shorting neigh boring IC leads The gold part of the tip is not insulated and should touch the IC lead to be tested It is one size fits all and will work with any IC lead pitch Fits in either probe socket PACC PT003 package of 4 SMD Discrete Tip The crescent shape of this tip is designed to fit tightly on ca...

Страница 13: ...er probe socket or can be used with a lead The Micro Clip is an optional accessory for the HFP1500 PACC CL001 package of 4 Clip 0 8 mm A pincher like tip designed to hold onto larger wires and components than possible with the Micro Clip including through hole mounted components This clip cannot be connected directly into either of the probe head sockets it must be connected to a lead PK006 4 pack...

Страница 14: ...2 package of 4 Offset Pin The offset pin is designed to be attached to either socket of the probe head The offset pin is the highest quality grounding solution and is recommended in high frequency applications 405400003 package of 1 C Leads While longer leads provide greater flexibility when connecting the probe to a circuit the added inductance may degrade the fidelity of high frequency signals S...

Страница 15: ... pin on the other and may be used for general purpose probing PACC LD005 short PACC LD006 long packages of 4 D Probe Holder FreeHand Probe Holder FreeHand lets you focus on the oscilloscope screen instead of on maintaining contact to multiple test points It allows the user to concentrate on what is really impor tant the waveform It is designed to keep most of the weight on the probe tip and will p...

Страница 16: ...idges Replaceable Cartridge If the input tip socket gets damaged you don t have to replace the entire probe because the HFP series active probe has a removable tip socket cartridge PACC MS002 package of 1 High Frequency Cartridge By having a fixed tip rather than a socket the High Fre quency cartridge is able to increase signal fidelity at higher frequencies The High Frequency Cartridge is an opti...

Страница 17: ...he part closest to the strain relief away from the probe body and slide the car tridge toward the strain relief Removing old cartridge To install a new cartridge 1 Slide the new cartridge onto the probe body until the latch engages 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 pro...

Страница 18: ...HFP1500 High Frequency Probe 3 8 HFP1500 OM E Rev E BLANK PAGE ...

Страница 19: ... applications care must be exercised in connecting the probe to the test circuit Increasing the parasitic capacitance or inductance in the input paths may introduce a ring or slow the rise time of fast signals Input leads which form a large loop area will pick up any radiated electromagnetic field which passes through the loop and may induce noise into the probe input Using one of the available ac...

Страница 20: ...d 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 Note At higher frequencies the maximum linear input voltage is reduced Refer to Sec tion 9 Specifications for the derating curve 6 V 12 V 10 V 14 V 8 V 4 V 2...

Страница 21: ...probe is used with an ADPPS adapter When used with an ADPPS adapter the probe s performance will be limited to 1 GHz and offset is only possible by using the oscilloscope s internal offset control Because the probe offset is not being used the linear operating range is limited to 8 Volt USE WITH OLDER LECROY INSTRUMENTS When used with LeCroy instruments with software version lower than 8 7 0 the o...

Страница 22: ...HFP1500 High Frequency Probe 4 4 HFP1500 OM E Rev E BLANK PAGE ...

Страница 23: ...ically at its resonant frequency This is the cause of the ring we often see after the leading edge of pulses in measured waveforms This effect is referred to as ground lead corruption Because it is impossible to eliminate either the L or C from this circuit the method to improve waveform fidelity is to raise the resonant frequency beyond the bandwidth of interest in the mea surement The resonant f...

Страница 24: ...BW ringing frequency of the probe into 0 35 Any input signal with a rise time faster than 0 4 nsec can cause ringing CAPACITIVE LOADING Capacitive loading is usually the most troublesome of the three loading effects It can affect the rise time bandwidth and delay time measurements At higher frequencies the capacitive loading can affect the amplitude as well as the waveshape of the measured signal ...

Страница 25: ...nce has been lowered to 152 Ω If at a given frequency the source impedance is large with respect to the input impedance a mea surable reduction in the output signal amplitude may occur where Zprobe is the probe s input impedance and Zsource is the source impedance 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 amplitu...

Страница 26: ...HFP1500 High Frequency Probe 5 4 HFP1500 OM E Rev E BLANK PAGE ...

Страница 27: ... the defective probe in order to receive credit for the probe core RETURNING A DEFECTIVE PROBE The procedure for returning a defective probe is as follows Contact your local LeCroy sales representative to find out where to return the product All returned products should be identified by model number and serial number Provide your name and contact number and if possible describe the defect or failu...

Страница 28: ...eplacement cost of the probe 8 Ship the package to the appropriate address REPLACEMENT PARTS The probe connection accessories and other common parts can be ordered through the regional customer care centers Refer to list below for 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 ...

Страница 29: ...Micro Clip PACC CL001 4 Clip PK006 4 2 Ground Spring with Hook PACC LD001 4 Square Pin Ground Spring PACC LD002 4 HFP1500 PACC MS002 PACC MS003 HF PACC PT001 PACC PT002 PACC PT003 PACC PT004 PACC PT005 405400003 PACC LD001 PACC LD002 PACC LD003 short PACC LD004 long PACC LD005 short PACC LD006 long PACC CL001 PK006 4 HFP1500 PACC MS002 PACC MS003 HF PACC PT001 PACC PT002 PACC PT003 PACC PT004 PACC...

Страница 30: ... LD003 4 Long Right Angle Lead PACC LD004 4 Short Single Lead PACC LD005 4 Long Single Lead PACC LD006 4 FreeHand Probe Holder PACC MS001 1 Replaceable Cartridge PACC MS002 1 Low C Cartridge PACC MS003 1 Soft Accessory case SAC 01 1 Instruction Manual HFP1500 OM E 1 Item LeCroy P N Replacement Quantity ...

Страница 31: ...ed by qualified personnel This procedure tests the following specifications Output Zero Voltage Offset Accuracy LF Attenuation Accuracy TEST EQUIPMENT REQUIRED Table 7 1 lists the test equipment and accessories or their equivalents that are required for per formance verification of the HFP1500 Probe This procedure has been developed to minimize the number of calibrated test instruments required On...

Страница 32: ...ProBus extender Cable to the oscilloscope The warranted characteristics of the HFP1500 are valid at any temperature within the Environmen tal Characteristics listed in the Specifications However some of the other test equipment used to verify the performance may have environmental limitations required to meet the accuracy needed for the procedure Make sure that the ambient conditions meet the requ...

Страница 33: ...0 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 5 Verify that the probe head LED shows basically the same color as the channel 1 trace color 6 Disconnect the probe from channel 1 and connect respectively to channe...

Страница 34: ...olt on the most sensitive range 5 Record the voltage measured on the DMM to 10 µV resolution as Output Zero Voltage in the Test record 6 Check that the voltage indicated by the DMM is between 800 µV 7 Disconnect the DMM from the precision 50 Ω terminator Leave the remaining setup in place for the next step HFP2500 ProBus Extender Cable Precision 50Ω Terminator HFP1500 Probe DMM LeCroy Oscilloscope...

Страница 35: ...into the output terminals of the power supply with ground side of the adapter and the ground side of the probe head con nected to the positive terminal of the power supply 5 Attach a BNC cable to the unused female port of the BNC tee and a dual banana plug adapter to the other end of the cable and plug the dual banana plug adapter into the DMM input Make sure the side of the banana plug adapter co...

Страница 36: ... answer to three significant places as Offset Error Voltage in the Test Record 17 Verify that the error is between 10 8 mV Note The error term is derived from the Offset Accuracy specification of 1 8 mV Using a 10 0 V offset setting the maximum error would be 108 mV referred to the input which becomes 10 8 mV error referred to the output taking into account the 10 attenuation 18 Using the oscillos...

Страница 37: ...connect the DMM to the dual banana plug adapter connected to the function generator output 3 Set the DMM to read AC Volt and set the range to measure 5 0 Vrms 4 Set the mode of the function generator to sine wave the frequency to 70 Hz and the out put amplitude to 5 Vrms 10 mV as measured on the DMM 5 Record the output voltage to 1 mV resolution as Generator Output Voltage in the Test Record Be ca...

Страница 38: ...ected Output Voltage mid range in the test record 18 Remove the banana plug adapter from the DMM and connect the precision 50 Ω termina tor to the DMM making sure that the banana plug side marked GROUND is connected to the LOW or COMMON input of the DMM 19 After the DMM has stabilized record the reading to 100 µV resolution as Measured Out put Voltage mid range in the Test record 20 Calculate the ...

Страница 39: ...ations over the entire temperature range adjustment must be performed in a controlled ambient environment with temperature of 23 C 5 C The adjustment procedure will require removal of the probe control circuit cover This cover is part of the ESD protection system of the HFP1500 To protect the probe you should perform the entire procedure on a static dissipating work sur face Wear an antistatic wri...

Страница 40: ...cable Connect the Precision 50 Ω Terminator to the other end of the BNC cable 2 Connect the banana plugs of the precision 50 Ω terminator to the input of the DMM Make sure the plug corresponding to the BNC shield marked Ground is connected to the LO or COMMON input of the DMM Refer to figure 8 1 for setup information Description Minimum Requirements Test Equipment Examples Digital Oscilloscope Pro...

Страница 41: ...ad DC Volt on the most sensitive range 5 Verify that the probe inputs are not connected to any signal 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 Figure 8 2a Adjustment Locations S N 1000 and higher HFP2500 Precision 50Ω Terminator ProBus Extender Cable HFP1500 probe DMM LeCroy...

Страница 42: ...oximately 0 Volt 4 Plug the dual banana plug adapter with the probe attached into the output terminal of the power supply Make sure the side of the banana plug corresponding to the probe ground and BNC ground is connected to the negative terminal of the power supply 5 Attach a BNC cable to the unused female port of the BNC tee and a dual banana plug adapter to the other end of the BNC cable and pl...

Страница 43: ...MM to read DC Volt on the most sensitive range 10 Subtract 10 0 V from the power supply output voltage recorded in step B 7 Be sure to keep track of the sign of the result 11 Adjust OFFSET RANGE until the DMM reads the same voltage 1 mV as calculated in step B 11 Be sure the sign agrees 12 Repeat steps A 3 through A 7 of the Adjust Offset Zero procedure 13 Disconnect the probe from the ProBus exte...

Страница 44: ... HFP1500 OM E Rev E 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 ...

Страница 45: ... WARRANTED CHARACTERISTICS Warranted characteristics are parameters with guaranteed performance Unless otherwise noted tests are provided in the Performance Verification Procedure for all warranted specifications Low Frequency Attenuation 1 plus uncertainty of 50 Ω Accuracy termination Output Zero 8 mV referred to the input Offset Accuracy 1 Output Zero error referred to the input TYPICAL CHARACTE...

Страница 46: ...be Head Size Length 61 mm 2 4 in Width 7 3 mm 0 29 in Height 13 1 mm 0 52 in Cable Length 1 3 m 51 1 in Weight Probe only 100 g 3 5 oz Shipping 1 45 kg 3 19 lbs Input Sockets Signal and ground sockets are compatible with 0 635 mm 0 025 in square pins and 0 91 mm 0 036 in maximum diameter round pins Figure 9 1 Input Voltage vs Frequency 100 10 1 40 16 1 MHz 10 MHz 100 MHz 1 GHz 10 GHz Frequency Vol...

Страница 47: ...r requirements for hand held probe assemblies for electrical measurement and test EMC Directive EN 61326 A3 2003 EMC requirements for electrical equipment for measure ment control and laboratory use 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 Radia...

Страница 48: ...phenyl Ethers PBDE PCBAs X O X X X X Mechanical Hardware O O X O O O Sheet Metal O O X O O O Plastic Parts O O O O X X Protective Case O O O O X X Cable Assemblies X O X O X X Probe Tips X O X O X X 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 X Indicates that this toxic or ...

Страница 49: ...actual specification limit check The test limits are included in all of these steps Other measurements and the results of intermediate calculations that support the limit check are to be recorded in the column labeled Intermediate Results Permission is granted to reproduce these pages for the purpose of recording test results Probe Model HFP1500 Serial Number _______________________ Asset or Track...

Страница 50: ...ive Output Voltage ________________ V B 23 Expected Positive Output Voltage ________________ V B 26 Measured Positive Output Voltage ________________ V B 28 Offset Error Voltage Test limit 10 8 mV _____________ mV LF Attenuation Accuracy C 5 Generator Output Voltage ________________ V C 6 Expected Output Voltage top range ________________ V C 8 Measured Output Voltage top range ________________ V ...

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