Agilent Technologies 85025A User'S And Service Manual Download Page 61

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85025A/B/D/E

Detector

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Record

85025A/B/E

Absolute

Error

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85025D

Absolute

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Frequency

Agilent

85025A/B/D/E

erformance

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Summary of Contents for 85025A

Page 1: ...e Agilent Technologies 85025A B D E Detectors Manufacturing Part Number 85025 90063 Supersedes 85025 90014 85025 90031 Printed in USA Print Date January 2013 Supersedes September 2002 Agilent Technolo...

Page 2: ...S DOCUMENT IS PROVIDED AS IS AND IS SUBJECT TO BEING CHANGED WITHOUT NOTICE IN FUTURE EDITIONS FURTHER TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW AGILENT DISCLAIMS ALL WARRANTIES EITHER EXPRESS...

Page 3: ...n FAR 52 227 14 June 1987 or DFAR 252 227 7015 b 2 November 1995 as applicable in any technical data Printing Copies of Documentation from the Web To print copies of documentation from the Web downloa...

Page 4: ...and met LThe instruction documentation symbol The product is marked with this symbol when it is necessary for the user to refer to the instructions in the documentation How to Use This Guide This guid...

Page 5: ...Electrostatic Discharge ESD 2 2 Static Safe Work Station 2 2 Static Safe Practices 2 3 Power Requirements 2 3 Mating Connectors 2 3 Connecting the Detector 2 3 3 Operation Features 3 2 Operating Theo...

Page 6: ...5B 4 11 Additional Test Equipment Required for 85025D Only 4 11 Additional Test Equipment Required for 85025E Only 4 12 Speci cations 4 13 85025A B D E Frequency Response Performance Test Procedure 4...

Page 7: ...Cleaning the Connectors 8 2 Connector Cleaning Kit 8 2 Gaging Connectors 8 2 Gaging Connectors to be Mated with the 85025A B D E 8 3 Type N female 8 3 Precision 7 mm 8 3 Precision 3 5 mm female 8 3 9...

Page 8: ...3 7 4 1 Setup for 85025A B D E Return Loss Test 4 6 4 2 85025A B E Return Loss 0 04 GHz to Maximum Frequency 4 8 4 3 Frequency Response Measurement Setup 4 12 4 4 Absolute Power Accuracy Test Setup 4...

Page 9: ...Supplemental Characteristics 1 8 3 1 Equipment Required for Operator s Check 3 6 4 1 Recommended Equipment 4 2 4 2 85025A B Return Loss with Measurement Uncertainty 4 5 4 3 85025D Return Loss with Me...

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Page 11: ...speci cally designed for use with Agilent 8757 series scalar network analyzers Table 1 1 85025 Series Detector Descriptions Detector Connector Type Frequency Range 85025A Type N m 01 to 18 GHz 85025A...

Page 12: ...Figure 1 1 85025A B D E Detector 1 2 General Information Agilent 85025A B D E...

Page 13: ...upplemental typical non warranted detector characteristics when used with one of the above mentioned analyzers Note Speci cations describe the instrument s warranted performance over the temperature r...

Page 14: ...0 MHz to 40 MHz 10 dB 40 MHz to 4 GHz 20 dB 4 GHz to 18 GHz 17 dB Frequency Response in DC mode input power 010 dBm 10 MHz to 40 MHz 0 25 dB 00 75 dB 40 MHz to 18 GHz 60 5 dB Absolute Power Accuracy i...

Page 15: ...40 MHz to 4 GHz 20 dB 4 GHz to 18 GHz 17 dB 18 GHz to 26 5 GHz 12 dB Frequency Response in DC mode input power 010 dBm 10 MHz to 40 MHz 0 25 dB 00 75 dB 40 MHz to 18 GHz 60 5 dB Absolute Power Accurac...

Page 16: ...B 34 GHz to 40 GHz 15 dB 40 GHz to 50 GHz 9 dB Frequency Response in DC mode input power 010 dBm 10 MHz to 40 MHz 0 25 dB 00 75 dB 40 MHz to 20 GHz 60 5 dB 20 GHz to 26 5 GHz 1 00 5 dB 26 5 GHz to 40...

Page 17: ...to 25 GHz 25 dB 25 GHz to 26 5 GHz 23 dB Frequency Response in DC mode input power 010 dBm 10 MHz to 40 MHz 0 25 dB 00 75 dB 40 MHz to 18 GHz 60 5 dB 18 GHz to 26 5 GHz 60 5 dB at 18 GHz to 61 4 dB at...

Page 18: ...t 0 24 kg 0 5 lb Shipping 1 0 kg 2 2 lb Dimensions2 Including input connector not including cable 1 Because a type N gage calibration block zeros the gage at a 0 207 inch o set the gage displays a 0 2...

Page 19: ...a 2 meter cable A 25 foot and 200 foot cable can be ordered separately Table 6 1 lists the accessories that are available for use with these detectors Storage and Shipment To keep your detector in pr...

Page 20: ...a Detector for Service When you make an inquiry either by mail or by telephone refer to the detector by both model number and full serial number If you ship the detector to an Agilent o ce or service...

Page 21: ...the detector electrically Either perform the operator s check in Chapter 3 Operation or make a measurement in Chapter 4 Performance Tests If any of the following conditions exist notify your nearest A...

Page 22: ...ation and wear a grounding strap Never touch the input connector center contacts or the cable contact pins Static Safe Work Station Figure 2 1 illustrates a static safe station using two types of ESD...

Page 23: ...power for the detector Mating Connectors Table 1 7 lists connector mechanical tolerances Microwave Connector Care part number 08510 90064 provides information on the proper maintenance inspection and...

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Page 25: ...ector center contacts or the cable contact pins Do not apply more than 20 dBm RF power or more than 610 VDC to the detector Higher power voltage can electrically damage the detector Before you connect...

Page 26: ...tude modulated with a 27 778 MHz square wave The detector demodulates envelope detects this signal to produce a 27 778 MHz signal with a peak to peak voltage that corresponds to the magnitude of the R...

Page 27: ...ection mode must be selected On the analyzer press 4SYSTEM5 and select NNNNNNNNNNNNNNNNNNNNNNN MODE DC When the NNNNNNNNNNNNNNNNNNNNNNN MODE DC softkey is selected the source s square wave modulation...

Page 28: ...peci cations the following conditions apply The equipment has had a 30 minute warmup period The detector zeroing procedure has been performed The o set has been adjusted with a calibrated 0 dBm 50 MHz...

Page 29: ...or reading being displayed The display should now indicate a power reading of 0 00 dBm Note Pressing 4PRESET5 on the analyzer does not reset any DC OFFSET to zero and the SAVE RECALL registers do not...

Page 30: ...l Test set connections vary depending on the source Figure 3 2 depicts a typical measurement setup The 27 778 kHz modulation is supplied by the sweep oscillator Operator s Check The following procedur...

Page 31: ...to warm up 2 If the 8757 series analyzer s system interface is not engaged the analyzer s status line displays SYSINTF OFF press 4SYSTEM5 NNNNNNNNNNNNNN MORE NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SWEEP MO...

Page 32: ...r power level 10 Insert the bandpass lter between the RF output of the source and the detector Wait a few seconds to allow the trace to settle 11 Press 4CURSOR5 NNNNNNNNNNN MAX to nd the trace maximum...

Page 33: ...nce Test see the chapter titled Program Listing Equipment Required Preceding each test is a list that describes the equipment required to perform that particular test You may substitute any equipment...

Page 34: ...Option 001 Detectors RF plug in 83592C Power sensor 8481A Option 001 Directional bridge 85027A Calibrated open short p n 85021 60001 Adapter type N m to type N m p n 1250 1475 Attenuator 8492A Option...

Page 35: ...p is calibrated using an open short to minimize frequency response and phasing errors The detector under test is then connected to the TEST PORT of the bridge and its return loss is measured on the an...

Page 36: ...tion If the measured return loss is less than the speci ed return loss minus the measurement uncertainty the detector is de nitely out of speci cation Example C If the 85025A in Example A and B measur...

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Page 38: ...d 2 Press 4PRESET5 on the analyzer This will reset both the network analyzer and the sweep oscillator the source Allow 30 minutes for warmup 3 On the source press 4START5 4105 4MHz5 4STOP5 4405 4MHz5...

Page 39: ...L SAVED IN CH1 MEM 8 Press FUNCTION 4DISPLAY5 NNNNNNNNNNNNNNNNNNNNNNNNNN MEAS MEM 9 Connect the detector to be tested to the TEST PORT of the directional bridge On the analyzer press FUNCTION 4CURSOR5...

Page 40: ...Figure 4 2 85025A B E Return Loss 0 04 GHz to Maximum Frequency 15 On the analyzer press 4CURSOR5 Use the cursor to nd the highest trace value in each speci cation range Note A speci cation range is a...

Page 41: ...uency response does not check absolute gain of the detector across its operating frequency range It checks the relative variations in gain across the operating frequencies for example atness To simpli...

Page 42: ...mate Error Analysis for the 85025D Detector Uncertainty 26 5 GHz 40 GHz 50 GHz Power sensor CAL factor approximate uncertainties 1 5 2 2 5 Mismatch between attenuator and power Sensor 1 3 3 8 7 4 Mism...

Page 43: ...quired for 85025A Option 001 RF plug in 83592C Power sensor 8481A 10 dB attenuator 8492A Option 010 Additional Test Equipment Required for 85025B RF plug in 83592C Power sensor 8485A 10 dB attenuator...

Page 44: ...d for 85025E Only RF plug in 83595C Power Sensor 8485A 10 dB attenuator 8493C Option 010 Adapter 3 5 mm f to 3 5 mm f part number 1250 1749 Figure 4 3 Frequency Response Measurement Setup 4 12 Perform...

Page 45: ...l equipment and allow 30 minutes for warmup 2 On the power meter press 4dBm5 mode Zero and calibrate the power meter If you are unsure of how to do this refer to the power meter s Operating and Servic...

Page 46: ...by pressing NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DC DET ZERO NNNNNNNNNNNNNNNNNNNNNNN AUTOZRO When the zero is complete the display will indicate AUTOZERO COMPLETED 15 Connect the detector between the...

Page 47: ...curacy Performance Test Speci cations Refer to Table 1 2 through Table 1 6 Speci cations apply at 25 C 65 C Description Power accuracy is measured with consideration given to the following conditions...

Page 48: ...bility to the National Institute of Standards and Technology NIST is required Equipment Required Pulse function generator 8116A Scalar network analyzer 8757C D E 50 MHz bandpass lter part number 08757...

Page 49: ...ipment as shown in Figure 4 4 Do not connect detector to attenuator output Do not use the modulator for this test AC mode only Switch all the equipment ON and allow 30 minutes warmup time Figure 4 4 A...

Page 50: ...IER and RANGE rocker keys adjust for a 50 MHz display Select normal operation LED NORMAL ON 5 On the analyzer press 4PRESET5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CHAN 2 OFF Switch continuous wave ON and s...

Page 51: ...he DISABLE LED should deactivate Refer to the Performance Test Record at the end of this chapter for the calibrated power level computed at nominal 0 dBm Use the VERNIER rocker keys to adjust the outp...

Page 52: ...NNNNNNNN CHAN 2 OFF FUNCTION 4CURSOR5 23 Set the 10 dB step attenuator to 10 dB and set the 1 dB step attenuator to 6 dB 24 On the 8116A set a frequency of 50 MHz by pressing Sine Function 4P5 Duty 4D...

Page 53: ...83592B Scalar network analyzer 8757C D E 50 MHz bandpass lter Part Number 08757 80027 3 dB attenuator 8491B Calibrated 10 dB step attenuator 355D Option 001 H88 Calibrated 1 dB step attenuator 355C O...

Page 54: ...Figure 4 5 Power Accuracy Alternate Test Setup Procedure 1 Connect the equipment as shown in Figure 4 5 Allow 30 minutes warmup time 4 22 Performance T ests Agilent 85025A B D E...

Page 55: ...5 Note the reading On the analyzer press 4CAL5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DET OFFSET NNNNN A Using the ENTRY keys enter the value opposite in sign to the reading noted above 8 On the analyzer pr...

Page 56: ...ce Test Record for the CAL PWR LVL computed at nominal 0 dBm Adjust the output power to the CAL PWR LVL 20 Note and record the displayed cursor value 21 Set both attenuators to 0 dB Note and record th...

Page 57: ...5A B D E Detector Performance Test Record 1 of 9 Test Facility Report Number Date Customer Tested by Model Ambient temperature C Serial Number Relative humidity Options Special Notes Agilent 85025A B...

Page 58: ...85025A B D E Detector Performance Test Record 2 of 9 Model Report Number Date Test Equipment Used Model Number Trace Number Cal Due Date 1 2 3 4 5 6 7 8 4 26 Performance T ests Agilent 85025A B D E...

Page 59: ...D Return Loss 10 MHz to 40 MHz 10 dB 60 5 dB 0 04 GHz to 0 10 GHz 20 dB 2 05 dB 0 10 GHz to 14 GHz 23 dB 3 02 dB 14 GHz to 34 GHz 20 dB 3 02 dB 34 GHz to 40 GHz 15 dB 2 01 5 dB 40 GHz to 50 GHz 9 dB 2...

Page 60: ...8 Recommended Actual 0 01 GHz 2 00 GHz 4 00 GHz 6 00 GHz 8 00 GHz 10 0 GHz 12 0 GHz 14 0 GHz 16 0 GHz 18 0 GHz 20 0 GHz 21 0 GHz 22 0 GHz 23 0 GHz 24 0 GHz 25 0 GHz 26 0 GHz 26 5 GHz 28 0 GHz 30 0 GHz...

Page 61: ...85025A B D E Detector Performance Test Record 5 of 9 85025A B E Absolute dB Error Versus Frequency 85025D Absolute dB Error Versus Frequency Agilent 85025A B D E Performance T ests 4 29...

Page 62: ...wise 0 10 6 REF REF 16 0 0 0 70 2 1 0 3 13 0 3 0 61 2 0 76 3 10 0 6 0 52 6 10 0 0 40 3 10 3 0 40 0 10 6 REF REF 03 10 9 0 40 06 20 2 0 40 010 20 6 0 40 013 20 9 0 40 016 4 30 2 0 40 020 4 30 6 0 40 02...

Page 63: ...70 2 1 0 3 13 0 3 0 61 2 0 76 3 10 0 6 0 52 6 10 0 0 40 3 10 3 0 40 0 10 6 REF REF 03 10 9 0 40 06 20 2 0 40 010 20 6 0 40 013 20 9 0 40 016 4 30 2 0 40 020 4 30 6 0 40 025 4 5 40 1 0 40 030 4 5 40 6...

Page 64: ...52 6 0 4 0 40 3 0 7 0 40 0 10 0 REF REF 03 10 3 0 40 06 10 6 0 40 010 20 0 0 40 013 20 3 0 40 016 20 6 0 40 020 30 0 0 40 025 2 30 5 0 40 030 2 40 0 0 40 035 2 3 40 5 0 40 040 2 3 50 0 0 70 045 2 4 50...

Page 65: ...depressed Pass Fail 85025B E Precision 3 5 mm male 0 000 0 003 85025D Precision 2 4 mm male 0 000 0 002 1 Minimum recession must NEVER be less than the minimum recession tolerance If a connector fails...

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Page 67: ...5 Adjustments There are no adjustments which can be performed on the 85025A B D E Agilent 85025A B D E Adjustments 5 1...

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Page 69: ...n on a part that is not listed in Table 6 1 include the instrument model number a description of the part and its function Address the inquiry to the nearest Agilent o ce How To Order Parts Fast When...

Page 70: ...ector Repair Kit Type N 85025 60021 2 85025A Option 001 Connector Repair Kit 7 mm 85025 60022 2 85025B Connector Repair Kit 3 5 mm 85025 60023 2 85025D Connector Repair Kit 2 4 mm 85025 60026 2 85025E...

Page 71: ...Figure 6 1 Module Exchange Program Agilent 85025A B D E Replaceable Parts 6 3...

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Page 73: ...t a static safe work station If the detector fails electrically order a replacement detector Do not order the detector using its model number 85025A B D E Instead use the replacement part number given...

Page 74: ...r than 3 5 mm 1 8 inch is required to perform this procedure Procedure 1 Place the detector so its narrow side is on a at surface Position it so that the RF connector is facing away from you Refer to...

Page 75: ...ogether Replacing the Detector 1 Remove the plastic covers from the existing detector using the cover removal procedure 2 Install the covers on the replacement detector 3 Perform the operator s check...

Page 76: ...e hex nut 8 Remove the old cable assembly and remove the metal housing from the cable 9 Carefully slide the metal housing onto the new cable assembly Be sure to place the metal housing so the adjustme...

Page 77: ...Connections Replacing the Connectors Order the appropriate Connector Repair Kit see Table 6 1 for your detector Follow the instructions provided in the kit to replace the connectors Agilent 85025A B...

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Page 79: ...al topic For information on connector care refer to the Microwave Connector Care Quick Reference Card part number 08510 90360 Inspecting the Connectors Visual and mechanical inspection of the connecto...

Page 80: ...e surface with a foam swab It is safe to use trichlorotri uoroethane liquid Freon sparingly as a cleaning solvent However it is not safe to use abrasives of any kind such as pencil eraser or any other...

Page 81: ...n Do not use female type N connectors that have an inner rubber washer they damage the male center conductor Precision 7 mm Gage with the center conductor collet removed refer to the tolerances given...

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Page 83: ...then measures the frequency response of the detector and nally plots the di erence between the two on the computer s CRT This is identical to the manual version of the test and the results should be...

Page 84: ...power sensor Only data for that power sensor is loaded into memory Up to 50 cal factors can be stored in each le although less are shown on the power sensors A two dimensional array is created contain...

Page 85: ...atures Be careful when entering data and when following the displayed instructions Running the Detector Frequency Response Program The following information will help you successfully run the Detector...

Page 86: ...displayed output of the program is shown in Figure 9 1 If the displayed frequency response exceeds the limits of the graph increase the value of Scale variable controlling the scale size in line 210 F...

Page 87: ...701 if a printout is required The printer must be capable of performing a graphics dump Example Programs The following programs can be used to automate the power meter CAL factor entry and the Frequen...

Page 88: ...1 290 BEEP 1000 02 300 GOTO Entry 310 END IF 320 IF I 1 THEN 330 IF Freq Cal I 1 1 THEN 340 DISP FREQ MUST BE GREATER THAN LAST ENTRY TRY AGAIN 350 BEEP 2000 5 360 WAIT 2 370 GOTO Entry 380 END IF 390...

Page 89: ...File Pm_points Cal 620 ASSIGN File TO 630 BEEP 500 02 640 DISP CAL FACTORS HAVE BEEN STORED ON DISC 650 CAT 660 STOP 670 680 690 Error ERROR ON ASSIGNMENT 700 710 IF ERRN 56 THEN NO EXISTING FILE 720...

Page 90: ...iables as needed for the detector under test 180 Max_points 401 190 Start 10 Start frequency in MHz 200 Stop 26510 Stop frequency in MHz 210 Set_power 2 Power level set point of source in dBm 220 Scal...

Page 91: ...m_points 580 IF Freq Cal 1 1 THEN freq too low use first value 590 Cal_factor Cal 1 2 600 GOTO Act_pwr 610 END IF 620 X 0 630 REPEAT 640 X X 1 650 IF X Pm_points THEN freq too high use last value 660...

Page 92: ...ts 890 OUTPUT Source CW Meas I 1 MZ 900 IF I 1 THEN WAIT 5 910 Read_pwr Meas I 2 920 Corr_pwr Meas I 1 Meas I 2 930 DISP USING 940 Freq Meas I 1 MHz Power Meas I 2 dBm 940 IMAGE K 6D D K 3D 2D K 950 N...

Page 93: ...s 1290 COM Hpib Sna Source Pwr_mtr 1300 INTEGER I 1310 Clear_screen 1320 OUTPUT Sna C2 C0 C1 IA ME FD0 MD1 SW0 AF1 1330 BEEP 500 1 1340 DISP Select AC or DC mode A or D Default AC 1350 INPUT Answ 1360...

Page 94: ...R 0 1660 1670 GRATICULE 1680 X Stop Start 1690 Xmin 15 X 1700 Xmax 1 02 X 1710 Ymax 1 2 Scale 1720 Ymin 1 5 Scale 1730 WINDOW Xmin Xmax Ymin Ymax 1740 CLIP 0 X Scale Scale 1750 FRAME 1760 LINE TYPE 3...

Page 95: ...XT I 1970 1980 LABELS 1990 CSIZE 5 2000 LORG 4 2010 MOVE Stop Start 2 Scale 2020 LABEL ABSOLUTE dB ERROR vs FREQ 2030 LORG 6 2040 MOVE Stop Start 2 Scale 1 1 2050 LABEL FREQUENCY in GHz 2060 LDIR 90 2...

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Page 97: ...1 10 M maintenance 7 5 cleaning the connectors 8 2 gaging the input connector 8 2 mechanical inspection 8 1 visual inspection 8 2 mat use 2 2 module exchange program 6 3 O operating environment 1 9 o...

Page 98: ...4 17 return loss 4 3 return loss failure 4 9 return loss procedure 4 3 8 return loss speci cations 4 3 power requirements 2 3 product description 1 1 program listing 9 1 automated cal factor entry pro...

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