Page 1 Assembly-Level Service Guide HP 53131A/132A/181A 225 MHz Counter...
Page 3 Assembly-Level Service Guide This guide describes how to service the HP 53131A and HP 53132A Universal Counters, and the HP 53181A Frequency Counter. The information in this guide applies to instruments having the number prefix listed below, unless accompanied by a “Manual Updating Changes”...
Page 4 If HP receives notice from the mains power source to of such defects during the the product’s ground circuitry. warranty period, HP will, at its option, either repair or replace WARNING products which prove to be Indicates earth (ground) WHEN MEASURING POWER defective.
Page 5: Table Of Contents
Introduction Operational Verification Complete Performance Tests Optional HP-IB Verification Recommended Calibration Cycle Test Record Equipment Required HP 53131A/132A/181A Operational Verification Power-On Self Tests Run Self Test Termination Check External Arm Test (HP 53131A/132A Only) 1-10 Equipment 1-10 Assembly-Level Service Guide...
Page 6 Procedure 1-11 External Timebase Tests 1-12 Equipment 1-12 1 MHz External Timebase Input (HP 53131A and HP 53181A Only) 1-13 5 MHz External Timebase Input (HP 53131A and HP 53181A Only) 1-14 10 MHz External Timebase Input (HP 53131A and HP...
Page 7 Sensitivity (HP 53131A/132A Only) 1-30 Equipment 1-30 Counter Setup 1-30 100 MHz to 2.5 GHz Sensitivity for HP 53131A/132A Option 030 only 1-31 2.7 to 3.0 GHz Sensitivity for Option 030 only 1-32 200 MHz to 5.0 GHz Sensitivity for HP 53131A/132A...
Page 8 Only) 1-51 Equipment 1-51 Counter Setup 1-51 100 kHz to 100 MHz Sensitivity for HP 53181A 1-52 100 MHz to 200 MHz Sensitivity for HP 53181A 1-54 200 MHz to 225 MHz Sensitivity for HP 53181A 1-54 Test 3: Channel 1 Frequency Accuracy (HP 53181A...
Page 9 Contents Minimum to Maximum Accuracy Test for Options 030/050/ 1-65 Equipment 1-65 Counter Setup 1-65 Procedure 1-66 Test 6: Peak Volts, Channel 1 (HP 53181A Only) 1-68 Equipment 1-68 Counter Setup 1-68 Procedure 1-69 HP 53181A HP-IB Verification Program (Optional)
Page 10 To Calibrate the High Stability Timebase Option (Medium, High, or Ultra-High) 2-24 About the HP 53181A Calibration Menu 2-25 Overview of the HP 53181A Calibration Menu 2-25 The HP 53181A Calibration Menu Tree 2-27 To View the Calibration Menu and Security Status...
Page 11 Contents Surface Mount Repair 2-38 Disassembly and Reassembly Specifics 2-38 After Service Considerations 2-39 Product Safety Checks 2-39 Product Performance Checks 2-39 Assembly Identification and Location 2-40 Troubleshooting the Counter 2-45 Power Supply Check 2-45 Overview of the Self-Test Routines 2-47 Diagnosing the Faulty Assembly by Using the Self Tests...
Page 12 Contents Retrofitting Options Introduction Tools Required Do This First To Retrofit A3 1.5/3.0/5.0/12.4 GHz Channel Assembly (Option 015/030/050/124) To Retrofit A5 DC Power Input Assembly (Option 002) Option 002 DC Power Input Assembly Parts Preliminary Procedure Retrofitting Procedure To Retrofit A6 High Stability Timebase Assembly (Options 001, 010, and 012) 4-11 Option 001 Medium Stability Timebase Assembly...
Page 13 Contents Cabinet Parts and Hardware Backdating Introduction Manual Changes Older Instruments Backdating Hardware Backdating Firmware Backdating Specifications 6-16 HP 53131A/132A Specifications Introduction Instrument Inputs Time Base Measurement Specifications Measurement Definitions 7-12 Measurement Arming and Processing 7-14 General Information 7-16 HP 53181A Specifications...
Page 14 Contents Assembly-Level Service Guide...
Page 15: Preface
Instrument Identification Instrument identification is made from the serial number on the rear panel of the Counter. HP uses a two-part serial number with the first part (prefix) identifying a series of instruments and the second part (suffix) identifying a particular instrument within a series. An HP-assigned alpha character between the prefix and suffix identifies the country in which the instrument was manufactured.
Page 16: Instruments Covered By This Guide
Preface Instruments Covered by this Guide This guide applies directly to HP 53131A, HP 53132A, and HP 53181A Counters that have the same serial number prefix(es) shown on the title page. If the serial number prefix of your Counter differs from that listed on the title page of this guide, then there may be differences between this guide and your instrument.
Page 17: How To Order Guides
Chapter 7, “HP 53131A/132A Specifications,” lists all the specifications and operating characteristics for the HP 53131A/132A Universal Counter. Chapter 8, “HP 53181A Specifications,” lists all the specifications and operating characteristics for the HP 53181A Frequency Counter. How to Order Guides...
Page 18: Description Of The 225 Mhz Counters
HP-IB measuring speed of 200 measurements per second, and is suitable for bench-top operation and lower-volume ATE operation. The frequency and time interval resolutions for the HP 53132A are up to 12 digits in one second and 150 picoseconds, respectively. The HP 53132A provides users with exceptional resolution, and is ideal for ATE systems operation.
Page 19 SCPI programming capability, and • analog display mode limit testing Programmable control is performed via an HP-IB. The HP-IB and a talk-only RS-232C serial port are standard for the HP 53131A/132A/181A. The serial port is for printing measured and analyzed data on serial printers, or for outputting an out-of-limit signal.
Page 20: Options
For the HP 53131A/132A Option 030, front and rear terminals can exist for Channel 1 and 2. The optional Channel 3 can be configured as rear terminals only or front terminals only. For the HP 53181A, front and rear terminals can exist for Channel 1. The optional Channel 2 can be configured as rear terminals only or front terminals only.
Page 21: Support
5-year Return to HP for Calibration, Option W52 Accessories Supplied and Available Accessories Supplied • Power cord, 2.3 meters Accessories Available • HP 34161A Accessory Pouch • Printer RS-232 Interface cables, HP 24542G or HP 24542H • HP-IB cables, HP 10833A/B/C/D Assembly-Level Service Guide...
Page 22 Preface Assembly-Level Service Guide...
Page 23 Performance Tests Verifying Specifications...
Page 24: Performance Tests Introduction
This chapter provides procedures to test the electrical performance of the HP 53131A/132A Universal Counter and HP 53181A Frequency Counter, using the specifications listed in Chapter 7, “HP 53131A/132A Specifications,” and Chapter 8, “HP 53181A Specifications,” of this guide. Three types of testing are provided: •...
Page 25: Complete Performance Tests
The HP-IB verification program, described on page 1-40 (HP 53131A/132A) or page 1-70 (HP 53181A), exercises the Counter via the HP-IB interface. The program is written for an HP 9000 series 200 or 300 Desktop Computer as the controller. If the instrument successfully completes all phases of the verification program, there is a very high probability that the HP-IB interface is working properly.
Page 26: Equipment Required
HP 3325B OV, P, T Synthesized Signal Generator 100 kHz to 2560 MHz HP 8663A OV, P, T Pulse Generator 5 ns pulse width HP 8130A or equivalent OV, C Sweep Oscillator 3.0 GHz HP 8340B P, T Primary Frequency Standard Absolute accuracy >1 x 10...
Page 27: Hp 53131A/132A/181A Operational Verification
Chapter 1 Performance Tests HP 53131A/132A/181A Operational Verification HP 53131A/132A/181A Operational Verification The operational verification is an abbreviated series of checks that may be performed to give a high degree of confidence that the instrument is operating properly without performing the complete performance tests.
Page 28 For HP 53131A/132A, mark Pass or Fail in the HP 53131A/132A Performance Test Record on page 1-41, Test 1. 6’ For HP 53181A, mark Pass or Fail in the HP 53181A Performance Test Record on page 1-71, Test 1. Connect the Counter’s rear-panel 10 MHz Out as shown in Figure 1-1A or Figure 1-1B, depending on which Counter you are testing.
Page 29 Test Record on page 1-71, Test 2. NOTE The remaining steps apply to the HP 53131A and HP 53132A only since the HP 53181A does not have a standard Channel 2 input. For the HP 53181A, proceed to the following “Run Self Test” section.
Page 30: Run Self Test
HP 3458A BNC - to - Dual Counter Digital Multimeter Banana Plug HP 53131A/132A is shown in above figure. This setup for the HP 53181A requires a connection to Channel 1 only. Figure 1-2. Termination Check Setup Assembly-Level Service Guide...
Page 31 For HP 53131A/132A, mark Pass or Fail in the HP 53131A/132A Performance Test Record on page 1-41, Test 5a. 6’ For HP 53181A, mark Pass or Fail in the HP 53181A Performance Test Record on page 1-71, Test 4a. Press Channel 1 50Ω/1MΩ key.
Page 32: External Arm Test (Hp 53131A/132A Only)
Chapter 1 Performance Tests HP 53131A/132A/181A Operational Verification External Arm Test (HP 53131A/132A Only) This test verifies the External Arm port of the HP 53131A and HP 53132A Counter is operational. Equipment HP 8663A Synthesized Signal Generator HP 8130A Pulse Generator (or equivalent) HP 10100C 50Ω...
Page 33: Procedure
Connect the equipment as shown in Figure 1-3. HP 8130A Pulse Generator Output HP 8663A 50Ω Synthesized Signal Generator Feedthrough Ext Arm (rear panel) Counter Channel 1 Output N-to-BNC Connector Figure 1-3. External Arm Test Setup (HP 53131A/132A Only) Assembly-Level Service Guide 1-11...
Page 34: External Timebase Tests
Chapter 1 Performance Tests HP 53131A/132A/181A Operational Verification Set the HP 8663A to output a 200 MHz, 100 mV sine wave signal to Channel 1. On the Counter, Press Run key. Send a single pulse by pressing the MAN key on the HP 8130A, and observe that with each press the Gate annunciator flashes.
Page 35: Mhz External Timebase Input
Ref In input of the Counter via a 50Ω feedthrough) to output a 1 MHz, 200 mV rms sine wave signal. Set Synthesizer #2 (i.e., the HP 3325B connected to Channel 1) to output a 2 MHz, 100 mV rms square wave signal.
Page 36: Mhz External Timebase Input
Chapter 1 Performance Tests HP 53131A/132A/181A Operational Verification 5’ For HP 53181A, mark Pass or Fail in the HP 53181A Performance Test Record on page 1-71, Test 5a. 5 MHz External Timebase Input (HP 53131A and HP 53181A Only) Change the frequency of Synthesizer # 1, which is connected to the Counter’s rear-panel Ref In input to 5 MHz.
Page 37: 10 Mhz External Timebase Input For The Hp 53132A
10 MHz External Timebase Input for the HP 53132A Connect the equipment as shown in Figure 1-4. Set Synthesizer #1 (i.e., the HP 3325B that is connected to the rear-panel Ref In input of the Counter via a 50Ω feedthrough) to output a 10 MHz, 200 mV rms sine wave signal.
Page 38: Hp 53131A/132A Complete Performance Tests
The specifications of the HP 53131A/132A Universal Counter can be verified by performing the performance tests provided in this section. Table 1-2 lists a summary of the HP 53131A/132A performance tests. Record the results of the performance tests in the appropriate place on HP 53131A/132A Performance Test Record, which starts on page 1-41.
Page 39: Test 1: Time Interval (Hp 53131A/132A Only)
Chapter 1 Performance Tests Test 1: Time Interval (HP 53131A/132A Only) Test 1: Time Interval (HP 53131A/132A Only) This test verifies the Time Interval specifications between Channels 1 and 2. Equipment HP 8130A Pulse Generator (or equivalent) HP 10503A BNC Cable Counter Setup Cycle the POWER key to preset the Counter.
Page 40: Procedure
The HP 53132A Counter should display 0.1500 µs ±0.0025 µs. Record this value in the appropriate place in the Performance Test Record (Test 1, Line 1 for HP 53131A or Test 1, Line 2 for HP 53132A). Disconnect the test setup.
Page 41: Test 2: Trigger Level (Hp 53131A/132A Only)
Chapter 1 Performance Tests Test 2: Trigger Level (HP 53131A/132A Only) Test 2: Trigger Level (HP 53131A/132A Only) This test verifies the Trigger Level accuracy of the HP 53131A and HP 53132A Universal Counters. Equipment HP 3325B Synthesizer HP 10503A BNC Cable Counter Setup Cycle the POWER key to preset the Counter.
Page 42: Procedure
Channel 2 Output Figure 1-6. Trigger Level Test Setup Set the HP 3325B to output a 1 MHz, 80 mVp-p square wave signal. Set the HP 3325B DC OFFSET to −60 mV. On the Counter, press Run key. Now, increment the dc offset on the HP 3325B by +1 mV until the Counter’s Gate annunciator flashes and continue incrementing...
Page 43 Set the HP 3325B DC OFFSET to +60 mV. On the Counter, press Run key. Now, decrement the offset on the HP 3325B by −1 mV until the Counter’s Gate annunciator flashes and continue decrementing until the Counter displays a stable reading of approximately 1 MHz.
Page 44: Test 3: Channels 1 And 2 Frequency Sensitivity (Hp 53131A/132A Only)
Chapter 1 Performance Tests Test 3: Channels 1 and 2 Frequency Sensitivity (HP 53131A/132A Only) Test 3: Channels 1 and 2 Frequency Sensitivity (HP 53131A/132A Only) This set of tests verifies frequency sensitivity specifications of the HP 53131A and 53132A Universal Counters.
Page 45: 100 Khz To 100 Mhz Sensitivity For Hp 53131A/132A
Figure 1-7. For this test, make sure you always use the unit (HP 53131A/132A or HP 8663A) that contains the better 10 MHz timebase as the output source as shown in Figure 1-7.
Page 46 Chapter 1 Performance Tests Test 3: Channels 1 and 2 Frequency Sensitivity (HP 53131A/132A Only) Set the HP 8663A Signal Generator to output a 100 MHz, −35.0 dBm sine wave signal (−20.0 dBm for Option 060 Rear Terminals) to the Counter’s Channel 1 input.
Page 47: 100 Mhz To 200 Mhz Sensitivity For Hp 53131A/132A
Chapter 1 Performance Tests Test 3: Channels 1 and 2 Frequency Sensitivity (HP 53131A/132A Only) Record the actual reading in the appropriate place in the Performance Test Record (Test 3, Line 2). If you are testing a Counter with front-panel terminals (Standard), record the reading on Line 2 of the Standard portion of the test record.
Page 48: 200 Mhz To 225 Mhz Sensitivity For Hp 53131A/132A
Chapter 1 Performance Tests Test 3: Channels 1 and 2 Frequency Sensitivity (HP 53131A/132A Only) Repeat steps 1 through 4 for Channel 1. Record the actual reading in the Performance Test Record (Test 3, Line 4). 200 MHz to 225 MHz Sensitivity for HP 53131A/132A Leave the signal generator connected to Channel 1.
Page 49: Test 4: Channels 1 And 2 Frequency Accuracy (Hp 53131A/132A Only)
Chapter 1 Performance Tests Test 4: Channels 1 and 2 Frequency Accuracy (HP 53131A/132A Only) Test 4: Channels 1 and 2 Frequency Accuracy (HP 53131A/132A Only) This set of tests verifies the frequency accuracy specifications of the HP 53131A and HP 53132A Universal Counters.
Page 50: Procedure
Verify the HP 53131A Counter reads 1 MHz ±1 mHz. Verify the HP 53132A Counter reads 1 MHz ±200 µHz. Record the actual reading in the appropriate place in the Performance Test Record (Test 4, Line 1 for HP 53131A or Test 4, Line 3 for HP 53132A. 1-28...
Page 51 Verify the HP 53132A Counter reads 100 MHz ±15 mHz. Record the actual reading in the appropriate place in the Performance Test Record (Test 4, Line 5 for HP 53131A or Test 4, Line 7 for HP 53132A). Change the signal generator frequency to 200 MHz.
Page 52: Test 5: Option 030/050/124 Channel 3 Frequency Sensitivity (Hp 53131A/132A Only)
Frequency Sensitivity (HP 53131A/132A Only) This test verifies the frequency range, and sensitivity of the optional 3-GHz and 5-GHz Channel 3 (Option 030/050/124) for the HP 53131A and the HP 53132A Universal Counters. Equipment HP 8663A Synthesized Signal Generator (not needed for Option 050)
Page 53: Mhz To 2.5 Ghz Sensitivity For Hp 53131A/132A Option 030 Only
100 MHz to 2.5 GHz Sensitivity for HP 53131A/132A Option 030 only Set the HP 8663B Synthesized Signal Generator to output a 2500 MHz, −40 dBm sine wave, and connect the signal to Channel 3 of the Counter as shown in Figure 1-9.
Page 54: To 3.0 Ghz Sensitivity For Option 030 Only
2.7 to 3.0 GHz Sensitivity for Option 030 only Disconnect the HP 8663A Synthesized Signal Generator from the Counter (see Figure 1-9), and connect the HP 8340B Sweep Oscillator to Channel 3 of the Counter. Change the settings of the Sweep Oscillator to 3.0 GHz, −40 dBm.
Page 55 Chapter 1 Performance Tests Test 5: Option 030/050/124 Channel 3 Frequency Sensitivity (HP 53131A/132A Only) 200 MHz to 5.0 GHz Sensitivity for HP 53131A/132A (Option 050 only) Connect the 8340B Sweep Oscillator to Channel 3 of the counter. Change the settings of the Sweep Oscillator to 5.0 GHz, −40 dBm.
Page 56 Chapter 1 Performance Tests Test 5: Option 030/050/124 Channel 3 Frequency Sensitivity (HP 53131A/132A Only) 200 MHz to 12.4 GHz Sensitivity for HP 53131A/132A (Option 124 only) Connect the 8340B Sweep Oscillator to Channel 3 of the counter. Change the settings of the Sweep Oscillator to 12.4 GHz, −40 dBm.
Page 57: Test 6: Option 030/050/124 Channel 3 Frequency Accuracy (Hp 53131A/132A Only)
Connect equipment as shown in Figure 1-9. (NOTE: For Options 050 and 124, skip steps 2 through 5. Proceed to step 6.) Set the HP 8663A Synthesized Signal Generator to output 100 MHz at −17.0 dBm. Assembly-Level Service Guide 1-35...
Page 58 Verify the HP 53132A Counter reads 100 MHz ±20 mHz. Record the actual reading in the Performance Test Record (Test 6, Line 1 for HP 53131A or Test 6, Line 2 for HP 53132A). Disconnect the HP 8663A output from Channel 3 of the Counter, and connect the HP 8340B Sweep Oscillator output to Channel 3 of the Counter as shown in Figure 1-9.
Page 59: Test 7: Peak Volts, Channels 1 And 2 (Hp 53131A/132A Only)
Test 7: Peak Volts, Channels 1 and 2 (HP 53131A/132A Only) Test 7: Peak Volts, Channels 1 and 2 (HP 53131A/132A Only) This test verifies the Peak Volts accuracy specification of the HP 53131A and HP 53132A Universal Counters. Equipment HP 3325B Synthesizer HP 10100C 50Ω...
Page 60: Volt Peak
Output Figure 1-10. Peak Volts Test Setup Set the HP 3325B to output a 2 MHz, 2 Vp-p sine wave. The Counter should display −1.00 ±0.12V for the negative peak of the sine wave. This reading is displayed on the left side of the display.
Page 61: Volt Peak
Chapter 1 Performance Tests Test 7: Peak Volts, Channels 1 and 2 (HP 53131A/132A Only) Volt Peak 2 Remove the signal from Channel 1 of the Counter and connect it to Channel 2. Press Other Meas key until VOLT PEAK 2 is displayed.
Page 62 HP-IB interface. If the Counter successfully completes all phases of the verification program, there is a high probability that the HP-IB interface is operating correctly. If the Counter fails the verification program, refer to the troubleshooting section in Chapter 2, “Service,”...
Page 63: Hp 53131A/132A Performance Test Record
1 MHz External Timebase Input Test (HP 53131A Only) 5 MHz External Timebase Input Test (HP 53131A Only) 10 MHz External Timebase Input Test (HP 53131A Only) 10 MHz External Timebase Input Test for the HP 53132A Assembly-Level Service Guide 1-41...
Page 64 +15 mV −15 mV Channel 2 2. __________ +15 mV (HP 53131A/132A Only) Test 3: Channels 1 and 2 Frequency Sensitivity (HP 53131A/132A Only) Standard (Front Panel Terminals) Actual Reading Specification ≤ −21 dBm (20 mVrms) 100 kHz–100 MHz, Channel 1 1.
Page 65 Chapter 1 Performance Tests HP 53131A/132A Performance Test Record (Page 3 of 6) HP 53131A/132A Performance Test Record (Page 3 of 6) Complete Performance Tests (Continued) Test Actual Number Test Description Minimum Reading Maximum Channels 1 and 2 Frequency Accuracy...
Page 66 15. __________ 225.000,000,035 MHz Channel 2 224.999,999,965 MHz 16. __________ 225.000,000,035 MHz Test 5: Option 030/050/124 Channel 3 Frequency Sensitivity (HP 53131A/132A Only) Actual Reading Specification ≤ −27 dBm 10 mV rms 100 MHz–2.5 GHz 1. __________ ≤ −21 dBm 20 mV rms 2.7–3.0 GHz...
Page 67 Chapter 1 Performance Tests HP 53131A/132A Performance Test Record (Page 5 of 6) HP 53131A/132A Performance Test Record (Page 5 of 6) Complete Performance Tests (Continued) Test Actual Number Test Description Minimum Reading Maximum Option 030 Channel 3 Frequency Accuracy...
Page 68 Chapter 1 Performance Tests HP 53131A/132A Performance Test Record (Page 6 of 6) HP 53131A/132A Performance Test Record (Page 6 of 6) Complete Performance Tests (Continued) Test Actual Number Test Description Minimum Reading Maximum 12.4 GHz Test (HP 53131A): Channel 3 12.399.999 992 MHz...
Page 69: Hp 53181A Complete Performance Tests
HP 53181A Complete Performance Tests HP 53181A Complete Performance Tests The specifications of the HP 53181A Frequency Counter can be verified by performing the performance tests provided in this section. Table 1-3 lists a summary of the HP 53181A performance tests.
Page 70: Test 1: Trigger Level (Hp 53181A Only)
Chapter 1 Performance Tests Test 1: Trigger Level (HP 53181A Only) Test 1: Trigger Level (HP 53181A Only) This test verifies the Trigger Level accuracy of the HP 53181A Frequency Counter. Equipment HP 3325B Synthesizer HP 10503A BNC Cable Counter Setup Cycle the POWER key to preset the Counter.
Page 71: Procedure
Channel 1 Output Figure 1-11. Trigger Level Test Setup Set the HP 3325B to output a 1 MHz, 80 mVp-p square wave signal. Set the HP 3325B DC OFFSET to −60 mV. On the Counter, press Run key. Now, increment the dc offset on the HP 3325B by +1 mV until the Counter’s Gate annunciator flashes and continue incrementing...
Page 72 On the Counter, press Run key. Set the HP 3325B DC OFFSET to +60 mV. Now, decrement the offset on the HP 3325B by −1 mV until the Counter’s Gate annunciator flashes and continue decrementing until the Counter displays approximately 1 MHz.
Page 73: Test 2: Channel 1 Frequency Sensitivity (Hp 53181A Only)
Chapter 1 Performance Tests Test 2: Channel 1 Frequency Sensitivity (HP 53181A Only) Test 2: Channel 1 Frequency Sensitivity (HP 53181A Only) This set of tests verifies frequency sensitivity specifications of the HP 53181A Frequency Counter. Equipment HP 8663A Synthesized Signal Generator HP 1250-0780 Type N-to-BNC Connector HP 10100C 50Ω...
Page 74: Khz To 100 Mhz Sensitivity For Hp 53181A
N-to-BNC Connector Figure 1-12. Channels 1 Frequency Sensitivity Test Setup Set the HP 8663A Signal Generator to output a 100 kHz, −35.0 dBm sine wave signal (−20.0 dBm for Option 060) to the Counter’s Channel 1 input. In 0.1 dB steps, increase the power level until the Counter displays a stable reading of 100 kHz.
Page 75 Chapter 1 Performance Tests Test 2: Channel 1 Frequency Sensitivity (HP 53181A Only) Sweep the frequency from 100 kHz to 100 MHz. For Option 060, sweep frequencies from 100 kHz to 225 MHz. The Counter should read frequencies from 100 kHz to 100 MHz at an input power level of ≤...
Page 76: Mhz To 200 Mhz Sensitivity For Hp 53181A
Chapter 1 Performance Tests Test 2: Channel 1 Frequency Sensitivity (HP 53181A Only) 100 MHz to 200 MHz Sensitivity for HP 53181A Change the signal generator settings to 110 MHz at −30 dBm. Increase the power level by 0.1 dB steps until the Counter displays a stable 110 MHz reading.
Page 77: Test 3: Channel 1 Frequency Accuracy (Hp 53181A Only)
Chapter 1 Performance Tests Test 3: Channel 1 Frequency Accuracy (HP 53181A Only) Test 3: Channel 1 Frequency Accuracy (HP 53181A Only) This set of tests verifies the frequency accuracy specifications of the HP 53181A Frequency Counter. Equipment HP 8663A Synthesized Signal Generator...
Page 78: Procedure
Channel 1 N-to-BNC Connector Figure 1-13. Channels 1 Frequency Accuracy Test Setup Set the HP 8663A Signal Generator to output 1 MHz at −7 dBm. On the Counter, press Run key. Verify the Counter reads 1 MHz ±1 mHz. 1-56...
Page 79 Chapter 1 Performance Tests Test 3: Channel 1 Frequency Accuracy (HP 53181A Only) Record the actual reading in the Performance Test Record (Test 3, Line 1). Change the signal generator frequency to 100 MHz. Verify the Counter reads 100 MHz ±70 mHz.
Page 80: Test 4: Option 015/030/050/124 Channel 2 Frequency Sensitivity
This test verifies the frequency range and sensitivity of the optional 1.5-GHz (Option 015), 3-GHz (Option 030), 5.0-GHz (Option 050), or 12.4-GHz (Option 124) Channel 2 for the HP 53181A Frequency Counter. Equipment HP 8663A Synthesized Signal Generator (Not needed for Option 050/124)
Page 81: Mhz To 1.5 Ghz Sensitivity For Option 015 Only
Test 4: Option 015/030/050/124 Channel 2 Frequency Sensitivity 100 MHz to 1.5 GHz Sensitivity for Option 015 Only Set the HP 8663B Synthesized Signal Generator to output a 500 MHz, −60 dBm sine wave and connect the signal to Channel 2 of the Counter as shown in Figure 1-14.
Page 82: Mhz To 2.7 Ghz Sensitivity For Option 030 Only
(Test 4, Line 1). 100 MHz to 2.7 GHz Sensitivity for Option 030 Only Set the HP 8663B Synthesized Signal Generator to output a 500 MHz, −60 dBm sine wave, and connect the signal to Channel 3 of the Counter as shown in Figure 1-14.
Page 83: To 3.0 Ghz Sensitivity For Option 030 Only
2.8 to 3.0 GHz Sensitivity for Option 030 Only Disconnect the HP 8663A Synthesized Signal Generator from the Counter (see Figure 1-14), and connect the HP 8340B Sweep Oscillator to Channel 3 of the Counter. Change the settings of the Sweep Oscillator to 3.0 GHz, −40 dBm.
Page 84: Mhz To 12.4 Ghz Sensitivity For Option 124 Only
Chapter 1 Performance Tests Test 4: Option 015/030/050/124 Channel 2 Frequency Sensitivity 200 MHz to 12.4 GHz Sensitivity for Option 124 only Connect the 8340B Sweep Oscillator to Channel 2 of the counter. Change the settings of the Sweep Oscillator to 12.4 GHz, −30 dBm. Increase the power level in 1 dB steps until the Counter displays a stable reading of approximately 12.4 GHz.
Page 85: Test 5: Option 015/030/050/124 Channel 2 Frequency Accuracy (Hp 53181A Only)
Frequency Accuracy (HP 53181A Only) This test verifies the frequency accuracy of the optional 1.5-GHz (Option 015), 3-GHz (Option 030), 5.0 GHz (Option 050), or 12.4 GHz (Option 124) Channel 2 for the HP 53181A Frequency Counter. The tests are organized as follows: •...
Page 86: Procedure
Chapter 1 Performance Tests Test 5: Option 015/030/050/124 Channel 2 Frequency Accuracy (HP 53181A Only) Procedure Connect equipment as shown in Figure 1-15. Frequency Standard HP 8340B (switch set to EXT) Sweep Oscillator Output Input (rear panel) HP 8663A Synthesized Signal Generator HP 53181A 50Ω...
Page 87: Hp 1250-0780 Type N-To-Bnc Connector
Disconnect the test setup. Minimum to Maximum Accuracy Test for Options 030/050/124 Equipment HP 8663A Synthesized Signal Generator (not needed for Option 050) HP 8340B Sweep Oscillator HP 1250-0780 Type N-to-BNC Connector (not needed for Option 050) HP 10503A BNC Cable (2) HP 10100C 50Ω...
Page 88: Procedure
Record the actual reading in the Performance Test Record (Test 5, Line 3). Disconnect the HP 8663A output from Channel 2 of the Counter, and connect the HP 8340B Sweep Oscillator output to Channel 2 of the Counter as shown in Figure 1-15.
Page 89 Test 5: Option 015/030/050/124 Channel 2 Frequency Accuracy (HP 53181A Only) (NOTE: For Options 050/124) Set the HP 8340B to output 5.0 GHz at −17 dBm. Verify the HP 53181A Counter reads 5.0 GHz ±3 Hz. Record the actual reading in the Performance Test Record (Test 5, Line 5).
Page 90: Hp 10503A Bnc Cable
Chapter 1 Performance Tests Test 6: Peak Volts, Channel 1 (HP 53181A Only) Test 6: Peak Volts, Channel 1 (HP 53181A Only) This test verifies the Peak Volts accuracy specification of the HP 53181A Frequency Counter. Equipment HP 3325B Synthesizer HP 10100C 50Ω...
Page 91: Procedure
Output Figure 1-16. Peak Volts Test Setup Set the HP 3325B to output a 2 MHz, 2 Vp-p sine wave, and connect the signal to Channel 1 of the Counter. The Counter should display −1.00 ±0.12V for the negative peak of the sine wave.
Page 92: Hp 53181A Hp-Ib Verification Program (Optional)
(Optional) The HP-IB Verification program exercises the HP 53181A through various operating modes via the its HP-IB interface. If the Counter successfully completes all phases of the verification program, there is a high probability that the HP-IB interface is operating correctly. If the Counter fails the verification program, refer to the troubleshooting section in Chapter 2, “Service,”...
Page 93: Hp 53181A Performance Test Record
Chapter 1 Performance Tests HP 53181A Performance Test Record (Page 1 of 4) HP 53181A Performance Test Record (Page 1 of 4) Hewlett-Packard Model 53181A Frequency Counter Serial Number: _________________________ Repair/Work Order No. _ _ ________________ Test Performed By: _____________________ Temperature: __________________________...
Page 94 Chapter 1 Performance Tests HP 53181A Performance Test Record (Page 2 of 4) HP 53181A Performance Test Record (Page 2 of 4) Complete Performance Tests Test Number Test Description Minimum Actual Reading Maximum Trigger Level: −15 mV Channel 1 1. __________ +15 mV −15 mV...
Page 95 HP 53181A Performance Test Record (Page 3 of 4) HP 53181A Performance Test Record (Page 3 of 4) Complete Performance Tests Test 4: Option 015/030/050 Channel 2 Frequency Sensitivity (HP 53181A Only) Actual Reading Specification ≤ −27 dBm 100 MHz–1.5 GHz (Option 015 Only) 1.
Page 96 Chapter 1 Performance Tests HP 53181A Performance Test Record (Page 4 of 4) HP 53181A Performance Test Record (Page 4 of 4) Complete Performance Tests Test Actual Number Test Description Minimum Reading Maximum Peak Volts, Channel 1 (HP 53181A Only): −1.12 V...
Page 97 Service...
Page 98: Introduction
The HP 53131A/132A Calibration Procedures (page 2-15). This section provides step-by-step procedures for calibrating the HP 53131A/132A. • About the HP 53181A Calibration Menu (page 2-25). This section contains reference information that gives a complete overview of the calibration menu of the HP 53181A. •...
Page 99: Returning The Instrument To Hewlett-Packard For Service
Returning the Instrument to Hewlett-Packard for Service To Provide Repair Information If you are shipping the instrument to an HP office for service or repair, call your nearest Hewlett-Packard Sales Office to make arrangements. Then tag and package the HP 53131A/132A/181A for shipment.
Page 100: To Pack In The Original Packaging Materials
Chapter 2 Service Returning the Instrument to Hewlett-Packard for Service To Pack in the Original Packaging Materials Whenever possible, repack the instrument in its original packaging for shipment. In any correspondence, refer to the instrument by the model number and complete serial number. Disconnect the power cord, probes, cables, or other accessories attached to the instrument.
Page 101: To Pack In The Commercially Available Materials
Chapter 2 Service Returning the Instrument to Hewlett-Packard for Service To Pack in the Commercially Available Materials If the factory packaging materials are not available, you can use commercially available materials for shipping. Wrap the instrument in heavy paper or plastic. Place the instrument in a strong shipping container.
Page 102: About The Hp 53131A/132A Calibration Menu
Counter is shipped from the factory. If you forget your security code, you can reset the security code to the model-number default by resetting all of the non-volatile memory to a default state (Contact HP for this confidential procedure).
Page 103 (CODE?) NOTE A good precaution is to use an HP-IB program (see the programming example titled “To Read and Store Calibration Data” in Chapter 3 of the Programming Guide) to read and store the calibration factors prior to initiating any calibration.
Page 104: The Hp 53131A/132A Calibration Menu Tree
Turn power off, press and hold Scale & Offset key, then press POWER key to access this menu. This menu does not exist in early versions (firmware revisions 3317, 3335, and 3402) of the HP 53131A/132A. In the early versions of the Counter, the CAL: menu item resides in the Utility menu, and there is no calibration security capability.
Page 105: To View The Calibration Menu And Security Status
Chapter 2 Service About the HP 53131A/132A Calibration Menu To View the Calibration Menu and Security Status The Calibration menu is accessed by holding the Scale & Offset key and cycling the POWER key. The first item in the Calibration menu is a message indicating the calibration security status: CAL SECURE or CAL UNSECURE .
Page 106 Chapter 2 Service About the HP 53131A/132A Calibration Menu Press any one of the arrow keys until your calibration choice (that is, CAL: OFFS2? , CAL: GAIN 1? , CAL: GAIN 2? , CAL: TI QUIK? , CAL: TI FINE? , or CAL: TIMEBAS? ) is displayed.
Page 107 CAL: TI QUIK? calibration instead, or restore the calibration factors that you saved prior to starting. Equipment: HP 8130A Pulse Generator or equivalent. HP 59992A J06 Time Interval Calibrator or equivalent. Assembly-Level Service Guide 2-11...
Page 108 Procedure: From the front-panel calibration menu, one keypress invokes the calibration. You are prompted to press buttons on the HP 59992A J06 Calibrator for each part of a four-part calibration. Note that CAL: TI FINE? requires the completion of four steps in order.
Page 109: To Secure Against Calibration
Chapter 2 Service About the HP 53131A/132A Calibration Menu To Secure Against Calibration Press and hold Scale & Offset key, then cycle POWER key. CAL UNSECURE is displayed. If CAL SECURE is displayed, then the Counter is already secured against calibration and the remaining steps are not applicable.
Page 110: To View The Calibration Count
Chapter 2 Service About the HP 53131A/132A Calibration Menu To View the Calibration Count Press and hold Scale & Offset key, then cycle POWER key. Press Scale & Offset key until CAL COUNT? is displayed. Press any one of the entry keys (arrow, +/-, Enter) to have a scrolling message appear, indicating what the calibration count is.
Page 111: The Hp 53131A/132A Calibration Procedures
Chapter 2 Service The HP 53131A/132A Calibration Procedures The HP 53131A/132A Calibration Procedures First Determine the Counter Firmware Revision Press and hold Recall (Utility) key, then cycle POWER key. REV: n is displayed; where “n” represents the numeric firmware revision code.
Page 112 Chapter 2 Service The HP 53131A/132A Calibration Procedures Press the appropriate arrow keys to enter the security code “ 53131 ”, for example, if 53131 is the security code by performing the following steps: a. Press key four times. The Counter should display CODE: 00000 .
Page 113 Chapter 2 Service The HP 53131A/132A Calibration Procedures Press Enter key. The Counter momentarily displays CALIBRATING , and then it should display OFFS 1 PASS . If the fail message is displayed, refer to the troubleshooting section in this chapter.
Page 114: To Calibrate The Gain For Channels 1 And 2
Chapter 2 Service The HP 53131A/132A Calibration Procedures To Calibrate the Gain for Channels 1 and 2 Press any one of the arrow keys until CAL: GAIN 1 ? is displayed. Press Enter key. A scrolling message is displayed. Follow the instruction by performing the following steps.
Page 115: To Calibrate Time Interval
Chapter 2 Service The HP 53131A/132A Calibration Procedures To calibrate the gain for Channel 2, connect the input or the BNC Tee to Channel 2 of the Counter. Press any one of the arrow keys until CAL: GAIN 2 ? is displayed.
Page 116: Cal: Ti Quik? Calibration
Press Enter key. A scrolling message with instructions appears. Follow the instruction by performing the following procedure Connect the HP 8130A Pulse Generator output to Channel 1 of the Counter as shown in Figure 2-3. Equipment HP 8130A Pulse Generator (or equivalent)
Page 117: Cal: Ti Fine? Calibration
“To Calibrate the High Stability Timebase Option (Medium, High, or Ultra-High)” procedure (page 2-24) to calibrate the timebase. CAL: TI FINE? Calibration Connect the HP 8130A Pulse Generator, HP 59992A J06 Time Interval Calibrator, and HP 53131A/123A Counter as shown in Figure 2-4.
Page 118 A scrolling message with instructions appears. Follow the instruction by performing the following procedure. Note the Counter display message prompts you to press buttons on the HP 59992A J06 Calibrator for each part of a four-part calibration. Note that CAL: TI FINE? requires the completion of four steps in the proper order.
Page 119: To Calibrate The Standard Timebase
Chapter 2 Service The HP 53131A/132A Calibration Procedures To Calibrate the Standard Timebase Connect the output of a 10 MHz house standard to Channel 1 of the Counter as shown in Figure 2-5. House Standard 10 MHz Reference HP 53131A/132A...
Page 120: To Calibrate The High Stability Timebase Option (Medium High, Or Ultra-High)
Chapter 2 Service The HP 53131A/132A Calibration Procedures To Calibrate the High Stability Timebase Option (Medium, High, or Ultra-High) NOTE Allow the Counter to warm up for approximately 24 hours before performing this calibration. This calibration is unlikely to fail, unless the Counter is not warmed up.
Page 121: About The Hp 53181A Calibration Menu
NOTE If you are familiar with the information provided in this section, proceed to the section titled “The HP 53181A Calibration Procedures” (page 2-31) to calibrate your Counter. This section, “About the HP 53181A Calibration Menu,” can be used as a reference.
Page 122 (CODE?) NOTE A good precaution is to use an HP-IB program (see the programming example titled “To Read and Store Calibration Data” in Chapter 3 of the Programming Guide) to read and store the calibration factors prior to initiating any calibration.
Page 123: The Hp 53181A Calibration Menu Tree
Chapter 2 Service About the HP 53181A Calibration Menu The HP 53181A Calibration Menu Tree NOTE Turn power off, press and hold Scale & Offset key, then press POWER key to access this menu. POWER Scale & Offset On / Stby...
Page 124: To View The Calibration Menu And Security Status
Chapter 2 Service About the HP 53181A Calibration Menu To View the Calibration Menu and Security Status The Calibration menu is accessed by holding the Scale & Offset key and cycling the POWER key. The first item in the Calibration menu is a message indicating the calibration security status: CAL SECURE or CAL UNSECURE .
Page 125: To Initiate The Calibration Routines
Chapter 2 Service About the HP 53181A Calibration Menu To Initiate the Calibration Routines Press and hold Scale & Offset key, then cycle POWER key. Unsecure for calibration by performing the preceding procedure. Press Scale & Offset key until CAL: OFFS1? is displayed.
Page 126: To Change To New The Security Code
Chapter 2 Service About the HP 53181A Calibration Menu To Change to New the Security Code Press and hold Scale & Offset key, then cycle POWER key. Unsecure for calibration by the using the procedure described in the section titled “To Unsecure for Calibration.”...
Page 127: The Hp 53181A Calibration Procedures
Chapter 2 Service The HP 53181A Calibration Procedures The HP 53181A Calibration Procedures First Determine the Counter Firmware Revision Press and hold Recall (Utility) key, then cycle POWER key. REV: n is displayed; where “n” represents the numeric firmware revision code.
Page 128 Chapter 2 Service The HP 53181A Calibration Procedures c. Press key once, and then press key three times. The Counter should display CODE: 53000 . d. Press key once, and then press key once. The Counter should display CODE: 53100 .
Page 129: To Calibrate The Gain For Channel 1
Press Enter key. A scrolling message is displayed. Follow the instruction by performing the following steps. Connect a BNC tee connector to Channel 1 of the HP 53181A. Connect the Counter, dc power supply, and digital multimeter shown in Figure 2-6.
Page 130: To Calibrate The Standard Timebase
Chapter 2 Service The HP 53181A Calibration Procedures Disconnect the calibration setup. This completes the Gain Calibration procedure. Depending on which timebase the Counter contains, proceed to either the following procedure “To Calibrate the Standard Timebase” or the “To Calibrate the High Stability Timebase Option (Medium, High, or Ultra-High)”procedure (page 2-35) to calibrate the timebase.
Page 131: To Calibrate The High Stability Timebase Option (Medium High, Or Ultra-High)
Chapter 2 Service The HP 53181A Calibration Procedures To Calibrate the High Stability Timebase Option (Medium, High, or Ultra-High) NOTE Allow the Counter to warm up for approximately 24 hours before performing this calibration. This calibration is unlikely to fail, unless the Counter is not warmed up.
Page 132: Pre-Troubleshooting Information
Chapter 2 Service Pre-Troubleshooting Information Pre-Troubleshooting Information This section contains the following pertinent troubleshooting information: • Safety Considerations • Recommended Test Equipment • Repair Considerations • After Service Considerations • Assembly Identification and Location Safety Considerations Although this instrument has been designed in accordance with international safety standards, this guide contains information, cautions, and warnings which must be followed to ensure safe operation and to retain the instrument in a safe condition.
Page 133: Recommended Test Equipment
(for example, fire and electric shock). Recommended Test Equipment Test equipment recommended for testing and troubleshooting the HP 53131A/132A/181A is listed in Chapter 1, “Performance Tests.” Substitute equipment may be used if it meets or exceeds the required characteristics listed in Table 1-1.
Page 134: Repair Considerations
Chapter 2 Service Pre-Troubleshooting Information Repair Considerations Electrostatic Discharge Electronic components and assemblies in the HP 53131A/132A/181A can be permanently degraded or damaged by electrostatic discharge. Use the following precautions when servicing the instrument: ENSURE that static-sensitive devices or assemblies are serviced at static-safe work stations providing proper grounding for service personnel.
Page 135: After Service Considerations
Chapter 2 Service Pre-Troubleshooting Information After Service Considerations Product Safety Checks The following safety checks must be performed after any troubleshooting and repair procedures have been completed to ensure the safe operation of the instrument. WARNING RESISTANCE CHECKS DESCRIBED IN THE FOLLOWING TEXT REQUIRE THAT THE POWER CORD BE CONNECTED TO THE INSTRUMENT AND THAT AC POWER BE DISCONNECTED.
Page 136: Assembly Identification And Location
* Exchange part availability subject to change without notice. Contact your local Hewlett-Packard Sales Office for current information. ** If the Motherboard needs to be replaced in a unit which contains Options 030, 050, or 124, it must be done at an HP Service Center.
Page 137 * Exchange part availability subject to change without notice. Contact your local Hewlett-Packard Sales Office for current information. ** If the Motherboard needs to be replaced in a unit which contains Options 030, 050, or 124, it must be done at an HP Service Center.
Page 138 * Exchange part availability subject to change without notice. Contact your local Hewlett-Packard Sales Office for current information. ** If the Motherboard needs to be replaced in a unit which contains Options 030, 050, or 124, it must be done at an HP Service Center.
Page 139 Chapter 2 Service Pre-Troubleshooting Information 10 MHz Out Connector RS-232 Connector HP-IB Connector Ref In Connector Ext Arm Connector J18 Power Supply Assembly Connector A4 AC Power Supply Assembly A3 Option 030/050 Channel 3 Assembly for HP 53131A/132A A3 Option 015/030/050...
Page 140 Chapter 2 Service Pre-Troubleshooting Information 10 MHz Out Connector RS-232 Connector HP-IB Connector Ref In Connector Ext Arm Connector XLR (Male) Jack (P/O A5) J18 Power Supply A5 DC Power Input Assembly Connector Assembly J6 (Hidden) A4 AC Power Supply...
Page 141: Troubleshooting The Counter
Chapter 2 Service Troubleshooting the Counter Troubleshooting the Counter Power Supply Check HAZARDOUS VOLTAGES ARE ON THE POWER SUPPLY WARNING ASSEMBLY. ONLY SERVICE TRAINED AND QUALIFIED PERSONNEL SHOULD PERFORM THE FOLLOWING PROCEDURE. Remove the power cord from the back of the instrument to disconnect the Counter from the power source.
Page 142 Chapter 2 Service Troubleshooting the Counter / 4 0 / 6 0 / 6 0 R I A Motherboard Assembly Figure 2-9. A4 AC Power Suppy Testpoint Locations on A1 Motherboard Assembly (Bottom View) 2-46 Assembly-Level Service Guide...
Page 143: Overview Of The Self-Test Routines
Chapter 2 Service Troubleshooting the Counter Table 2-4 lists A4 power supply voltages, the corresponding wire color, and the tolerances. Table 2-4. A4 AC Power Supply Voltages Wire Color Voltage Tolerance +5.0 V ±0.250 V +5.0 V ±0.250 V Black 0.0 V ______ Black...
Page 144 Troubleshooting the Counter You can also specify that failure messages be sent to a printer, the RS-232, and the HP-IB—if in talk-only ( TST PRINT: ON or OFF ). There are 13 choices for the TEST: menu item. They are listed and described in the following text.
Page 145: Diagnosing The Faulty Assembly By Using The Self Tests
When running the TEST LOOP self-test routine, be sure to connect the Counter to a serial printer via the RS-232 using a RS-232 printer interface cable (HP 24542G or HP 24542H) to receive more specific failure information. If you run the TEST LOOP test without Counter being connected to a printer, the Counter will only display pass or fail message.
Page 146: To Run The Individual Self Tests
Chapter 2 Service Troubleshooting the Counter To Run the Individual Self Tests Press and hold Recall (Utility) key, then cycle POWER key. NOTE If power does not cycle or the display does not light, go to the section titled “Power Supply Check” on page 2-45 of this chapter. Press Recall (Utility) key until TEST LOOP: is displayed.
Page 147 10 MHz HP 53131A/132A Counter (rear panel) Channel 2 Channel 1 BNC Tee Figure 2-11A. HP 53131A/132A Self Test Troubleshooting Setup 10 MHz HP 53181A Counter (rear panel) Channel 1 Figure 2-11B. HP 53181A Self Test Troubleshooting Setup Assembly-Level Service Guide...
Page 148 ROM: FAIL A1 Motherboard Assembly RAM: FAIL A1 Motherboard Assembly EEPROM: FAIL A1 Motherboard Assembly HP-IB: FAIL A1 Motherboard Assembly QSPI: FAIL A1 Motherboard Assembly, or A2 Display Board Assembly FPGA: FAIL A1 Motherboard Assembly, or A2 Display Board Assembly...
Page 149 Replacing Assemblies Disassembly and Reassembly...
Page 150: Introduction
Chapter 3 Replacing Assemblies Introduction Introduction This chapter contains the instructions for removing major assemblies in the HP 53131A/132A/181A. To install an assembly, reverse the removal instructions. This chapter provides the following disassembly and reassembly procedures: • To Remove the Cover page 3-4 •...
Page 151: Tools Required
Chapter 3 Replacing Assemblies Tools Required Tools Required The following tools are required for these removal and replacement procedures: • Hand TORX®‚ 10 screwdriver (T10) • Hand TORX®‚ 15 screwdriver (T15) • 7-mm spin tight • 14-mm deep-socket spin tight •...
Page 152: To Remove The Cover
ISM 1-A FOR LABORATORY USE BY QUALIFIED PERSONNEL FOUR USAGE EN LABORATOIRE PAR PERSONNEL QUALIFIE OPTIONS 001 MS Oven 010 HS Oven HP-IB Talk Only 10 MHz Out To Configure: Hold Recall during turn-on. RS - 232 Osc Adjust WARNING: FOR CONTINUED FIRE PROTECTION, USE SPECIFIED ˜...
Page 153 Chapter 3 Replacing Assemblies To Remove the Cover Remove the screw (H1) located at the bottom near the rear of the cover (MP3) as shown in Figure 3-2. Figure 3-2. Bottom View for Cover Removal With one hand gripping the front bezel, pull the cover off with the other hand by sliding the cover backward.
Page 154: To Remove The Front Bezel
Chapter 3 Replacing Assemblies To Remove the Front Bezel To Remove the Front Bezel Remove the cover. See the section titled “To Remove the Cover” in this chapter. Remove the bail handle (MP7) by rotating it to the vertical position and pull the ends outward as shown in Figure 3-3. Figure 3-3.
Page 155 Chapter 3 Replacing Assemblies To Remove the Front Bezel Remove the BNC nuts (H3), shown in Figure 3-5, from the front panel using the 14-mm deep-socket spin tight. P/O A2 Display Board Cable Figure 3-5. Front Bezel Removal For Counters with the optional 1.5 GHz or 3.0 GHz channel (Option 015 or 030), pull cable W1 out of the front bezel as shown in Figure 3-5.
Page 156 Chapter 3 Replacing Assemblies To Remove the Front Bezel Remove the two screws (H1), located in the sides of the front bezel, using the TORX 15 screwdriver as shown in Figure 3-5. Loosen the screw (H1), shown in Figure 3-5, that helps secure A1 Motherboard Assembly to the chassis to make step 9 (the following step) easier.
Page 157: To Remove A1 Motherboard Assembly
See the section titled “To Remove A5 DC Power Input Assembly (Option 002)” in this chapter. Remove the two hex screws (H4), shown in Figure 3-6, on the rear-panel HP-IB connector using the 7-mm spin tight. Assembly-Level Service Guide...
Page 158 Chapter 3 Replacing Assemblies To Remove A1 Motherboard Assembly A3 1.5/3.0 GHz Channel Assembly (Option 015/030) A1 Motherboard Assembly Figure 3-6. A1 Motherboard Assembly Removal Remove the BNC nuts (H3), shown in Figure 3-6, from the rear of the chassis using the 14-mm deep-socket spin tight (Opt 015/030 only).
Page 159: To Remove The A2 Display Board, Keypads, And Window
Chapter 3 Replacing Assemblies To Remove the A2 Display Board, Keypads, and Window To Remove the A2 Display Board, Keypads, and Window Remove the cover. See the section titled “To Remove the Cover” in this chapter. Remove the front bezel. See the section titled “To Remove the Front Bezel”...
Page 160 Chapter 3 Replacing Assemblies To Remove the A2 Display Board, Keypads, and Window Pull up on the top portion of the front bezel until the top portion of the display board is free from the top tabs. Pull down on the bottom portion of the front bezel until the display board is free from the bottom tabs.
Page 161: To Remove A3 1.5/3.0/5.0/12.4 Ghz Channel Assembly
015/030/050/124) To Remove A3 1.5/3.0/5.0/12.4 GHz Channel Assembly (Option 015/030/050/124) NOTE The 1.5 GHz Channel 2 Assembly is available only for the HP 53181A Frequency Counter. Remove the cover. See the section titled “To Remove the Cover” in this chapter.
Page 162 Chapter 3 Replacing Assemblies To Remove A3 1.5/3.0/5.0/12.4 GHz Channel Assembly (Option 015/030/050/124) A3 3 GHz Channel Assembly (Shown with Option 015/030) Figure 3-8. Optional Channel Input Assembly Removal Disconnect flat-ribbon cable of the optional channel from connector J7 of A1 Motherboard Assembly as shown in Figure 3-8. Remove the four (two or three for Option 050 or 124) screws (H2) attaching the optional channel to the chassis as shown in Figure 3-8.
Page 163: To Remove A4 Ac Power Supply Assembly
Chapter 3 Replacing Assemblies To Remove A4 AC Power Supply Assembly To Remove A4 AC Power Supply Assembly Remove the cover. See the section titled “To Remove the Cover” in this chapter. Remove the TORX screw (H1) located in the upper-middle of the chassis using the TORX 15 screwdriver as shown in Figure 3-9.
Page 164 Chapter 3 Replacing Assemblies To Remove A4 AC Power Supply Assembly Remove the two TORX screws (H2) on the rear panel using the TORX 10 screwdriver as shown in Figure 3-9. Lift up A4 AC Power Supply Assembly and disconnect its cable from J18 on A1 Motherboard Assembly to remove the power supply assembly as shown in Figure 3-9.
Page 165: To Remove A5 Dc Power Input Assembly (Option 002)
Chapter 3 Replacing Assemblies To Remove A5 DC Power Input Assembly (Option 002) To Remove A5 DC Power Input Assembly (Option 002) Remove the cover. See the section titled “To Remove the Cover” in this chapter. Remove the four TORX 10 screws (H2) that attach A5 DC Power Input Assembly to the side of the chassis as shown in Figure 3-11.
Page 166 Chapter 3 Replacing Assemblies To Remove A5 DC Power Input Assembly (Option 002) DC Power Input Assembly (Option 002) Figure 3-11. DC Power Input Assembly (Option 002) Removal Lift out A5 DC Power Input Assembly and disconnect cable as shown in Figure 3-11. 3-18 Assembly-Level Service Guide...
Page 167: To Remove A6 High Stability Timebase Assembly
Chapter 3 Replacing Assemblies To Remove A6 High Stability Timebase Assembly (Options 001, 010, and 012) To Remove A6 High Stability Timebase Assembly (Options 001, 010, and 012) Remove the cover. See the section titled “To Remove the Cover” in this chapter. Disconnect A6 High Stability Timebase Assembly cable from the J9 connector on A1 Motherboard Assembly as shown in Figure 3-12.
Page 168 Chapter 3 Replacing Assemblies To Remove A6 High Stability Timebase Assembly (Options 001, 010, and 012) A6 High Stability Timebase Assembly 1 - A IR E I S M FI E N LA A LI R LA FI E A LI T I O rn -o L IN...
Page 169: To Remove The Rear Terminals (Option 060)
For the HP 53131A/132A unsolder the rear chassis INPUTS 1 cable to J16 and INPUTS 2 to J17. For the HP 53181A unsolder the rear chassis INPUTS 1 cable to J17. NOTE If there are upper or lower shields installed on A1 Motherboard Assembly, cut them out and then remove Option 060 Rear Terminal cable(s).
Page 170 Option 015/030 Remove from J17 Remove from J16 (Channel 2 for HP53131A/132A Channel 1 for HP 53181A) (Channel 1 for HP53131A/132A) Figure 3-13. Rear Terminals (Option 060) Removal NOTE Options 050 and 124 (5.0 or 12.4 GHz Input) is front panel only.
Page 171 Chapter 3 Replacing Assemblies To Remove the Rear Terminals (Option 060) Loosen and remove the 2940-0256 BNC nuts (H3) that secure the coaxial cable(s) to the rear chassis, using the 14-mm deep-socket spin tight. Pull W2 and washers (H6) out of the rear INPUTS opening(s). Pull the connector-end of W1 and washer (H6) out of the rear INPUTS opening.
Page 172 Chapter 3 Replacing Assemblies To Remove the Rear Terminals (Option 060) 3-24 Assembly-Level Service Guide...
Page 173 Retrofitting Options...
Page 174: Introduction
Chapter 4 Retrofitting Options Introduction Introduction This chapter provides the following retrofit procedures: • To Retrofit A3 1.5/3.0/5.0/12.4 GHz Channel Assembly page 4-3 (Option 015/030/050/124) • To Retrofit A5 DC Power Input Assembly (Option 002) page 4-4 • To Retrofit A6 High Stability Timebase Assembly page 4-11 (Options 001, 010, and 012) •...
Page 175 To Retrofit A3 1.5/3.0/5.0/12.4 GHz Channel Assembly (Option 015/030/050/124) NOTE Retrofitting to Option 015 (1.5 GHz), Option 030 (3.0 GHz), Option 050 (5.0 GHz), and Option 124 (12.4 GHz) must be performed by technicians at an HP Service Center. Assembly-Level Service Guide...
Page 176: Option 002 Dc Power Input Assembly Parts
Chapter 4 Retrofitting Options To Retrofit A5 DC Power Input Assembly (Option 002) To Retrofit A5 DC Power Input Assembly (Option 002) Option 002 DC Power Input Assembly Parts Item HP Part No. Qty. • Chassis (MP10) 53131-00010 • A5 DC Power Input Assembly 53132-60206 •...
Page 177: Retrofitting Procedure
Chapter 4 Retrofitting Options To Retrofit A5 DC Power Input Assembly (Option 002) Retrofitting Procedure Slide A1 Motherboard Assembly into the new chassis (MP10) as shown in Figure 4-1A. MP10 A1 Motherboard Assembly Figure 4-1A. DC Power Input Assembly Retrofitting Insert but do not tighten the three TORX 15 screws (H1) that attach A1 Motherboard Assembly to the new chassis (MP10) as shown in Figure 4-1A.
Page 178 To Retrofit A5 DC Power Input Assembly (Option 002) Insert and tighten the two hex screws (H4) and the lock washers (H5) onto the HP-IB connector that protrudes from the rear of the chassis using the 7-mm spin tight. Now, re-install the front bezel by performing the front bezel removal procedure, in Chapter 3 of this guide, in reverse.
Page 179 Chapter 4 Retrofitting Options To Retrofit A5 DC Power Input Assembly (Option 002) To install the new A4 AC Power Supply Assembly (53132-60207), connect the ac power supply’s shorter cable to connector J18 on A1 Motherboard Assembly as shown in Figure 4-1B. Insert and tighten the two TORX 10 screws (H2) to attach A4 Power Supply Assembly to the rear of the chassis as shown in Figure 4-1B.
Page 180 Chapter 4 Retrofitting Options To Retrofit A5 DC Power Input Assembly (Option 002) Install A5 DC Power Input Assembly (53132-60206) into the chassis by performing the following: a. First, connect the other ac power supply cable to the connector on A5 printed-circuit board as shown in Figure 4-1C. DC Power Input Assembly (Option 002) Figure 4-1C.
Page 181 Chapter 4 Retrofitting Options To Retrofit A5 DC Power Input Assembly (Option 002) b. Position A5 Power Input Assembly against the rear of the chassis and align it with the two appropriate holes in the rear of the chassis. c. Using the four TORX 10 screws (H2), secure A5 DC Power Input Assembly to the side of the chassis (MP10) as shown in Figure 4-1C.
Page 182 To Retrofit A5 DC Power Input Assembly (Option 002) Note that you will have to assemble your own dc power cable using 18 AWG connecting wires and a three-pin HP E9640A XLR (female) connector plug, shown in Figure 4-1E. Cable wires...
Page 183: Option 001 Medium Stability Timebase Assembly Parts
TORX 10 screws (H2) 0515-0430 • Pozidriv screws (H7) 2360-0331 These options can be installed or retrofitted in Counters that have firmware revisions 3402 and greater only. Contact your local HP Service Center for more information. Assembly-Level Service Guide 4-11...
Page 184: Procedure
Chapter 4 Retrofitting Options To Retrofit A6 High Stability Timebase Assembly (Options 001, 010, and 012) Procedure Turn off the Counter and remove power cord. Remove the cover. See the section titled “To Remove the Cover” in Chapter 3 of this guide. If you are retrofitting the Option 001 Medium Stability Timebase Assembly, go to step 5.
Page 185 Chapter 4 Retrofitting Options To Retrofit A6 High Stability Timebase Assembly (Options 001, 010, and 012) A6 High Stability Timebase Assembly Jumper cap 1 - A IR E I S M FI E A LI FI E A LI T I O r n -o L I N 0 1 0...
Page 186: To Retrofit The Rear Terminals (Option 060)
Figure 4-3A. See the following NOTE. NOTE The HP 53131A and 53132A front and rear terminals can be in parallel for inputs 1 and 2. However, the optional Channel 3 input (Option 030) can be configured as rear terminals only or front terminals only. The optional Channel 3 inputs (Option 050 or 124) can be front terminal only (53131A, 53132A, 53181A).
Page 187 Chapter 4 Retrofitting Options To Retrofit the Rear Terminals (Option 060) For the HP 53181A, the front and rear terminals can exist for Channel 1. NOTE However, HP 53181A’s optional Channel 2 input (Option 015/030) can be configured as rear terminals only or front terminals only.
Page 188 Chapter 4 Retrofitting Options To Retrofit the Rear Terminals (Option 060) from Option 015/030 To J17 To J16 (Channel 2 for HP53131A/132A Channel 1 for HP 53181A) (Channel 1 for HP53131A/132A) Figure 4-3B. Rear Terminals Retrofitting 4-16 Assembly-Level Service Guide...
Page 189 Solder the lead-end of the cables to their appropriate ground and input pads on A1 Motherboard Assembly (J16, J17) For the HP 53131A/132A solder the rear chassis INPUTS 1 cable to J16 and INPUTS 2 to J17. (See Figure 4-3B.) For the HP 53181A solder the rear chassis INPUTS 1 cable to J17.
Page 190 Chapter 4 Retrofitting Options To Retrofit the Rear Terminals (Option 060) 4-18 Assembly-Level Service Guide...
Page 191 Replaceable Parts...
Page 192: Introduction
Table 5-2 lists reference designations used in the parts list and throughout the guide, and Table 5-3 lists all replaceable assemblies and parts for the HP 53131A/132A/181A Counter. Table 5-4 is a list of manufacturer’s code numbers given in the parts list (Table 5-3).
Page 193: Reference Designations
Chapter 5 Replaceable Parts Reference Designations Reference Designations Table 5-2 lists the reference designations used in the parts lists, block diagrams, and throughout the guide. Replaceable Parts Table 5-3 is a list of replaceable parts and is organized as follows: Electrical assemblies in alphanumerical order by reference designation.
Page 194: Parts Identification
Chapter 2, “Service.” When ordering from Hewlett-Packard, the important numbers to note from the Parts List are the HP Part Number and part-number check digit (in the “CD” column), and the quantity of the part you want. If the part you want is NOT identified in the guide, you can call on Hewlett-Packard for help (see the following section titled “Contacting...
Page 195: Contacting Hewlett-Packard
HP Support Materials Organization, using the telephone numbers or address listed on the next page. (You can also contact your local HP sales office. HP sales offices are listed at the back of this package.) By telephone: –...
Page 196: Cabinet Parts And Hardware
Chapter 5 Replaceable Parts Cabinet Parts and Hardware Cabinet Parts and Hardware To locate and identify miscellaneous cabinet and chassis parts and instrument hardware, refer to Figure 2-8A, Figure 2-8B, and Figure 5-1. These figures provide different views of the instrument, with the parts identified by reference designations;...
Page 197 Chapter 5 Replaceable Parts Cabinet Parts and Hardware Table 5-3. HP 53131A/132A/181A Replaceable Parts Reference HP Part Description Mfr Part Number Code Designation Number EXCHANGE ELECTRONIC ASSEMBLIES A1 (HP 53131A) 53131-60004 MOTHERBOARD 28480 53131-60004 53131-69004 MOTHERBOARD (EXCHANGE RESTORED) 28480 53131-69004...
Page 198 Chapter 5 Replaceable Parts Cabinet Parts and Hardware Table 5-3. HP 53131A/132A/181A Replaceable Parts (continued) Reference HP Part Description Mfr Part Number Code Designation Number 34401-88304 REAR PLASTIC BEZEL 28480 34401-88304 OPTION 001 MEDIUM STABILITY TIMEBASE ASSY OPTION 001 53132-60008...
Page 199 Chapter 5 Replaceable Parts Cabinet Parts and Hardware P/O MP2 (Option 002) (MP11 for Option 002) (Option 001, 010, or 012) (MP10 for Option 002) (HP 53181A only) P/O MP2 Figure 5-1. HP 53131A/132A/181A Exploded View (Chassis Parts and Assemblies) Assembly-Level Service Guide...
Page 200 Chapter 5 Replaceable Parts Cabinet Parts and Hardware Table 5-3. HP 53131A/132A/181A Replaceable Parts (Continued) Reference HP Part Description Mfr Part Number Designation Number Code OPTION 060 REAR TERMINALS OPTION 060 8120-6150 CABLE-COAXIAL ASSY (Only one is needed for the...
Page 201 Backdating Manual Changes...
Page 202: Introduction
Manual Updating Changes package. Contact the nearest Hewlett-Packard Sales and Support Office. Older Instruments To adapt this guide to older HP 53131A/132A/181A Counters having a serial prefix lower than 3711, perform the backdating provided in the following sections.
Page 203: Backdating Hardware
Chapter 6 Backdating Backdating Hardware Backdating Hardware CHANGE 1 (Below Series Prefix 3711A) Page 2-40, Table 2-1. HP 53131A Assembly Identification: Change A1 Motherboard part number from 53131-60004 to 53131-60001. Page 2-42, Table 2-3. HP 53181A Assembly Identification: Change A1 Motherboard part number from 53181-60004 to 53181-60001.
Page 204 Chapter 6 Backdating Backdating Hardware CHANGE 3 (New TCXO boards) Page 2-47. Troubleshooting the Counter Add the following as step 4a: If the Counter under test contains Option 010 or 012 High Stability Timebase, perform the following: a. Disconnect the power supply’s two-wire cable from J2 of A6 High Stability Timebase Assembly as shown in Figure 2-10.
Page 205 53132A Only (Firmware Revision 3646A to 3546A) Page 2-41, Table 2-2. HP 53132A Assembly Identification: Change A1 Motherboard part number from 53132-60014 to 53132-60001. Page 5-7, Table 5-3. HP 53131A/132A/181A Replaceable Parts: Change A1 Motherboard (53132A) part number from 53132-60014 to 53132-60001. Assembly-Level Service Guide...
Page 206 Chapter 6 Backdating Backdating Hardware CHANGE 5 (Series 3705A to 3546A, 3548A) Chassis color change only. Page 5-7/Page 5-10, Table 5-3. HP 53131A/132A/181A Replaceable Parts: Reference Designator/ Series 3546A (53131A/132A) Description Series 3705A Series 3548A (53181A) MP2 Bumper/Cover Kit 34401-86010...
Page 207 Counter. Thus, when you order a new A1 Motherboard Assembly (53131-60001, same part number as the old A1) for your HP 53131A Counter, you need to order a new metalized front bezel (53131-40003, same part number of the old non-metalized front bezel).
Page 208: Backdating Firmware
[Xilinx 3042A]; and shortens TI delay from 1 ms to 100ms. This revision is backward compatible. Page 2-6 thru Page 2-15 (“About the HP 53131A/132A Calibration Menu,” and “The HP 53131A/132A Calibration Procedures” sections). Replace with the following calibration information and procedures:...
Page 209 Chapter 6 Backdating About the HP 53131A Calibration Menu CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427) (Continued) The HP 53131A Utility/Calibration Menu Tree NOTE Turn power off, press and hold Recall (Utility) key, then press POWER key to access this menu.
Page 210 Chapter 6 Backdating The HP 53131A Calibration Procedures CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427) (Continued) The HP 53131A Calibration Procedures To Calibrate the Offset for Channels 1 and 2 To access the Utility menu, power down, and press and hold the Recall (Utility) key, then press POWER key.
Page 211 Chapter 6 Backdating The HP 53131A Calibration Procedures This completes the Offset Calibration procedure. Proceed to the next procedure to calibrate the gain. CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427) (Continued) To Calibrate the Gain for Channels 1 and 2 Press any one of the arrow keys until CAL: GAIN 1 ? is displayed.
Page 212 Chapter 6 Backdating The HP 53131A Calibration Procedures If the fail message is displayed, refer to the troubleshooting section in this chapter. CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427) (Continued) To calibrate the gain for Channel 2, connect the input or the BNC Tee to Channel 2 of the Counter.
Page 213 Chapter 6 Backdating The HP 53131A Calibration Procedures Connect the HP 8130A Pulse Generator output to Channel 1 of the Counter as shown in Figure 2-3. CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427) (Continued) Equipment HP 8130A Pulse Generator (or equivalent)
Page 214 Chapter 6 Backdating The HP 53131A Calibration Procedures CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427) (Continued) Disconnect the calibration setup. This completes the TI QUIK? calibration procedures. Depending on which timebase the Counter contains, proceed to the following procedure “To Calibrate the Standard Timebase” or the “To Calibrate the High Stability Timebase Option (Medium or High)”...
Page 215 Chapter 6 Backdating The HP 53131A Calibration Procedures CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427) (Continued) To Calibrate the High Stability Timebase Option (Medium or High) NOTE Allow the Counter to warm up for approximately 30 minutes before performing this calibration. This calibration is unlikely to fail, unless the Counter is not warmed up.
Page 216: Backdating Specifications
Change the Signal Input Range specification from: TTL Compatible High-Level Input: >3.0 V Low-Level Input: <1.5 V CHANGE 2 (53132A, Serial Prefix 3546A and Below) Page 7-3, External Arm Input Specifications: Change the Signal Input Range specification from: TTL Compatible High-Level Input: >3.0 V...
Page 217 Chapter 6 Backdating Backdating Specifications CHANGE 3 (53181A, Serial Prefix 3711A02841 and Below) Page 8-3, External Arm Input Specifications: Change the Signal Input Range specification from: TTL Compatible High-Level Input: >3.0 V Low-Level Input: <1.5 V Assembly-Level Service Guide 6-17...
Page 218 Chapter 6 Backdating Backdating Specifications 6-18 Assembly-Level Service Guide...
Page 219 HP 53131A/132A Specifications...
Page 220: Introduction
Chapter 7 HP 53131A/132A Specifications Introduction Introduction The specifications of the HP 53131A/132A Universal Counter are provided in this chapter. Instrument Inputs Channel 1 & 2 Input Specifications Channel 1 & 2 Input Characteristics 1 MΩ or 50 Ω Frequency Range Impedance: 1 MΩ...
Page 221 Chapter 7 HP 53131A/132A Specifications Instrument Inputs (Continued) Instrument Inputs (Continued) 4, 5 Channel 3 Input Specifications Channel 3 Input Characteristics 50 Ω Frequency Range Impedance: Coupling: Option 030 100 MHz to 3 GHz VSWR: < 2.5:1 Option 050 200MHz to 5 GHz Option 124 200 MHz to 12.4 GHz...
Page 222: Time Base
Chapter 7 HP 53131A/132A Specifications Time Base Time Base Internal Time Base Stability Standard Medium Stability High Stability Oven Ultra High Stability (0° to 50°C) Oven (Option 001) (Option 010) Oven (Option 012) Temperature Stability: –6 –7 –9 –9 < 5 x 10 <...
Page 223: Measurement Specifications
Option 124 200 MHz to 12.4 GHz 80 ps to 5 ns (Period 2 or 3 selectable only via the HP-IB interface) For Automatic or External Arming: For Time or Digits Arming: (and signals < 100 Hz using Timed Arming)
Page 224 Chapter 7 HP 53131A/132A Specifications Measurement Specifications (Continued) Measurement Specifications (Continued) HP 53131A—Worst Case RMS Resolution Automatic or External Arming: 1E+02 Auto Armed 1E+00 10ms 1E-2 100ms 1E-4 1E-6 Gate Time 1E-8 1E-10 1000 10000 100000 1000000 1E+07 1E+08 1E+09 1E+10...
Page 225 Chapter 7 HP 53131A/132A Specifications Measurement Specifications (Continued) Measurement Specifications (Continued) HP 53132A—Worst Case RMS Resolution Automatic or External Arming: 1E+02 1E+00 Auto Armed 10ms 1E-2 100ms 1E-4 1E-6 Gate Time 1E-8 1E-10 1000 10000 100000 1000000 1E+07 1E+08 1E+09...
Page 226 60.2 mHz Which is to say that the HP 53132A would display results in the range 15 MHz ±60.2 mHz. Note however that the dominant error is the Time Base Error. If an even higher stability time base is available or if the instrument can be source locked to the 15 MHz signal, then this error term can be substantially reduced.
Page 227 ------------------------------------------------------------------------------------------- - 750 ps 300 ps Systematic Uncertainty: ±(Time Base Error × TI) ± Trigger Level Timing Error ± 1.5 ns Differential Channel Error (HP 53131A) ± 900 ps Differential Channel Error (HP 53132A) Time Interval Delay After a Time Interval Measurement has begun by satisfying the trigger conditions on Channel 1, the instrument will wait for the user-entered delay time to elapse before the end-of-measurement trigger will be accepted on Channel 2.
Page 228 750 ps 300 ps Systematic Uncertainty: ± (Time Base Error × Pulse Width) ± Trigger Level Timing Error ±1.5 ns Differential Channel Error (HP 53131A) ± 900 ps Differential Channel Error (HP 53132A) Rise/Fall Time Measurement is specified over the full signal ranges of Channel 1. The interval between the end of one edge and start of a similar edge must be greater than 4 ns.
Page 229 Chapter 7 HP 53131A/132A Specifications Measurement Specifications (Continued) Measurement Specifications (Continued) Duty Cycle Measurement is specified over the full signal range of Channel 1. However, both the positive and negative pulse widths must be greater than 4 ns. Results Range: 0 to 1 (e.g.
Page 230: Measurement Definitions
Chapter 7 HP 53131A/132A Specifications Measurement Definitions Measurement Definitions Definitions of Systematic Uncertainty Terms • Trigger Error External source and input amplifier noise may advance or delay the trigger points that define the beginning and end of a measurement. The resulting timing uncertainty is a function of the slew rate of the signal and the amplitude of spurious noise spikes (relative to the input hysteresis band).
Page 231 The value of f is not available to the user, but the instrument can be queried over HP-IB to determine if this condition exists. After the measurement completes, use the query :DIAGnostic:MEASure:PRESolution? The response is an ASCII text formatted string “Ø”...
Page 232: Measurement Arming And Processing
Chapter 7 HP 53131A/132A Specifications Measurement Arming and Processing Measurement Arming and Processing Gate Time Measurement Throughput Auto Mode, or 1 ms to 1000 s HP-IB ASCII: 200 Measurements/s (maximum) (See examples in the Programming Guide for ways to optimize...
Page 233: General Information
• The limits annunciator will light on the front panel display. • The instrument will generate an SRQ if enabled via HP-IB. • The limits hardware signal provided via the RS-232 connector will go low for the duration of the out-of-limit condition (see the description of this connector under the General Information section of this specifications table).
Page 234: General Information
The rear-panel RS-232 connector is a 9-pin connector (DB-9, male). You can connect the universal counter to any terminal or printer with a properly configured DTE connector (DB-25). You can use a standard interface cable (HP part number 24542G or 24542H). Data is “output only”; the instrument cannot be programmed via the RS-232 interface.
Page 235 HP 53181A Specifications...
Page 236 Chapter 8 HP 53181A Specifications Introduction Introduction The specifications of the HP 53181A Frequency Counter are provided in this chapter. Instrument Inputs Channel 1 Input Specifications Channel 1 Input Characteristics 1 MΩ or 50 Ω Frequency Range Impedance: 1 MΩ Capacitance:...
Page 237 Chapter 8 HP 53181A Specifications Instrument Inputs (Continued) Instrument Inputs (Continued) 3, 4 Channel 2 Input Specifications Channel 2 Input Characteristics 50 Ω Frequency Range Impedance: Coupling: Opt. 015 100 Mhz to 1.5 Ghz VSWR: < 2.5:1 Opt. 030 100 MHz to 3 GHz Opt.
Page 238 Chapter 8 HP 53181A Specifications Time Base Time Base Internal Time Base Stability Standard Medium Stability High Stability Oven Ultra High Stability (0° to 50°C) Oven (Option 001) (Option 010) Oven (Option 012) –6 –7 –9 –9 Temperature Stability: < 5 x 10 <...
Page 239 0.2 ns to 5 ns Option 124 200 MHz to 12.4 GHz 80 ps to 5 ns (Period 2 selectable only via the HP-IB interface) For Automatic or External Arming: For Time or Digits Arming: (and signals < 100 Hz using Timed Arming)
Page 240 Chapter 8 HP 53181A Specifications Measurement Specifications (Continued) Measurement Specifications (Continued) Worst Case RMS Resolution Automatic or External Arming: 1E+02 Auto Armed 1E+00 10ms 100ms 1E-2 1E-4 1E-6 Gate Time 1E-8 1E-10 1000 10000 100000 1000000 1E+07 1E+08 1E+09 1E+10...
Page 241 63.1 mHz Which is to say that the HP 53181A would display results in the range 15 MHz ±63.1 mHz. Note however that the dominant error is the Time Base Error. If an even higher stability time base is available to the instrument or if the instrument can be source locked to the 15 MHz signal, then this error term can be substantially reduced.
Page 242 Chapter 8 HP 53181A Specifications Measurement Specifications (Continued) Measurement Specifications (Continued) ⁄ ⁄ Frequency Ratio: Measurement is specified over the full signal range of each input. –10 Results Range: to 10 ‘Auto’ Gate Time: 100 ms (or sufficient cycles on Channel 1 to make a valid measurement, whichever is longer) LSD: Ratio 1 2 ⁄...
Page 243 Multiply this quantity by the measurement result to yield the absolute error for that measurement. Averaging measurements will not reduce (fractional) time base error. The HP 53181A counters exhibits negligible sensitivity to line voltage; consequently this term may be ignored.
Page 244 • The limits annunciator will light on the front panel display. • The instrument will generate an SRQ if enabled via HP-IB. • The limits hardware signal provided via the RS-232 connector will go low for the duration of the out-of-limit condition (see the description of this connector under the General Information section of this specifications table).
Page 245 DTE connector (DB-25). You can use a standard interface cable (HP part number 24542G or 24542H). Data is “output only”; the instrument can not be programmed via the RS-232 interface.
Page 246 Chapter 8 HP 53181A Specifications General Information 8-12 Assembly-Level Service Guide...
Page 247 2-28 unsecure 2-28 A4 AC Power Supply 3-15 calibration cycle A5 DC Power Input (Option 002) 3-17 Calibration Menu A6 High Stability Timebase (Options HP 53131A/132A 001, 010, 012) 3-19 HP 53181A 2-25 accessories Calibration menu 2-25 available HP 53131A/132A...
Page 248 Instrument identification xiii Ground continuity test 2-39 Instrument model number Insulation resistance test 2-39 handle removal HP 5071A assembly identification 2-40 2-41 2-42 keypads 3-11 HP-IB program HP-IB verification HP 53131A/132A 1-40...
Page 249 3-11 parts identification repair information parts, chassis repair strategy xiii parts, ordering Replaceable assemblies performance test record Replaceable parts HP 53131A/132A 1-41 replaceable parts list 5-10 HP 53181A 1-71 retrofitting options performance tests 1-16 A3 1.5 GHz Channel 2 (Option...
Page 250 2-38 Returning the instrument to Hewlett- electrostatic discharge 2-38 Packard ground continuity test 2-39 Returning the instrument to HP insulation resistance test 2-39 product performance checks 2-39 product safety checks 2-39 Safety considerations 2-36...
Page 251 For more information about Hewlett-Packard test and measurement products, applications, and services, visit our web http://www.hp.com/go/tmdir site at: HP’s Test and Measurement Fax Service for United States and Canada: Technical information for test and measurement products and services is available 24 hours a day, 1-800-800-5281...
Page 253 PARTICULAR PURPOSE. for servicing are for use by trained-personnel only. To avoid dangerous electric shock, do not HP will be liable for damage to perform such adjustments or tangible property per incident servicing unless qualified to do up to the greater of $300,000 or...
Page 254 Manual Part Number 53131-90039 Printed in U.S.A, MARCH 1999...

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Test 5: Option 015/030/050/124 Channel 2 Frequency Accuracy (Hp 53181A Only)

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