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34

Chapter 2

 

Operation

Using the Mixers with the 856X Series Spectrum Analyzers

O

p

er

ati

o

n

Figure 2-11 Signal Responses Produced by a 50 GHz Signal in U Band 

Identify signals with the frequency-shift method 

6. Signal-identification routines that identify the signal and images are available on 

instruments with firmware revisions 

≤

920528, or with Option 008. The frequency-shift 

method of identifying valid signals uses the spectrum-analyzer function 

SIG ID ON OFF

. 

When using this function, smaller spans will yield more accurate measurements.

a. Span down to 50 MHz.

b. Press 

AUX CTRL

, 

EXTERNAL MIXER

, 

SIGNAL IDENT

.

c. Press 

SIG ID ON OFF

 until 

ON

 is selected.

Any signal not produced by the currently selected harmonic will be shifted horizontally 
on alternate sweeps (see 

Figure 2-12

). Therefore, when viewing the display, on alternate 

sweeps the signal will appear, then not appear, at the frequency of interest. The correct 
signal produced by the selected harmonic will be shifted in a vertical direction only, as 
shown in 

Figure 2-13

.

Содержание 11970 Series

Страница 1: ...r s Guide 11970 SERIES HARMONIC MIXERS K A Q U V and W Models Manufacturing Part Number 11970 90031 Supersedes 11970 90030 Printed in USA October 2003 Copyright 1992 1999 2001 2003 Agilent Technologies Inc ...

Страница 2: ...rnational Standards Organization members Warranty This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment During the warranty period Agilent Technologies will at its option either repair or replace products which prove to be defective For warranty service or repair this product must be returned to a servic...

Страница 3: ...IES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES AGILENT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY Assistance Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies products For any assistance contact your nearest Agi...

Страница 4: ...4 ...

Страница 5: ...Series Spectrum Analyzer Option AYZ 26 Set up the equipment 26 Using the Mixers with the 856X Series Spectrum Analyzers 30 Set up the equipment 30 Select the Frequency Band 31 Save the average conversion loss value 32 Signal Identification 33 Identify signals with the frequency shift method 34 Identify signals in wide frequency spans 36 Using the Mixers with MMS Analyzers 38 Preliminary Operation ...

Страница 6: ...6 Contents Table of Contents Specification 68 Description 68 4 Service Maintenance 74 Repairs 74 Replaceable Parts 74 Circuit Description 74 ...

Страница 7: ...7 General Information 1 General Information ...

Страница 8: ... leveling capability of the 11975A the mixers are able to achieve maximum measurement accuracy at optimum LO input level of 14 5 to 16 dBm A label on the end of each mixer shows a Conversion Loss Calibration table printed especially for that particular mixer An 8 1 2 by 11 inch calibration table shipped with the mixer provides a larger easier to read version of the same table shown on the label pl...

Страница 9: ...es Mixers are fully compatible with all 8566B Spectrum Analyzers 856x Series portable spectrum analyzers with options 002 tracking generator and 327 no IF IN on front panel do not have external mixing capability 856x Series Portable Spectrum Analyzers require option 008 or FW date code 920528 for signal identification functionality Agilent E4407B spectrum analyzers require option AYZ LO Out and IF...

Страница 10: ...n Introduction General Information PSA Series E4440A E4446A and E4448A spectrum analyzers require Option AYZ LO OUT and IF IN connectors The E4443A and E4445A do not support external mixing Figure 1 2 Mixer Connection Kit Option 009 ...

Страница 11: ...rs 11970K and 11970A and the round flange mixer 1970Q 11970U 11970V and 11970W require different screws If your mixer has a square waveguide flange use four hex head screws with Part Number 3030 0221 If it has a round waveguide flange use four hex head captive screws with Part Number 1390 0671 The special balldriver hex screwdriver available in the Option 009 Mixer Connector Kit simplifies install...

Страница 12: ... Bias Requirements None Calibration Accuracy Maximum CW RF Input Level 11970K A Q U 2 0 dB with LO amplitude range of 14 5 to 16 dBm 20 dBm l00mW 11970V W 2 2 dB with LO amplitude range of 14 5 to 16 dBm Maximum Peak Pulse Power 24 dBm with 1µsec pulse avg power 20 dBm 11970K A Q U 3 0 dB with LO amplitude range of 16 to 18 dBm Environmental Meets MIL T 28800C Type III Class 3 Style C 11970V W 3 2...

Страница 13: ...equency Response at 14 to 18 dBm LO Input Power 2 8 dB MODEL 11970Q MODEL 11970U RF Frequency Range 33 50 GHz RF Frequency Range 40 60 GHz LO Harmonic Number 10 LO Harmonic Number 10 LO Input Frequency Range 3 27 4 97 GHz LO Input Frequency Range 3 97 5 97 GHz Maximum Conversion Loss 28 dB Maximum Conversion Loss 28 dB 8566B Noise Level at 1 kHz Bandwidth and 14 5 to 16 dBm LO Input Power 101 dBm ...

Страница 14: ...8 dBm LO Input Power 2 8 dB Frequency Response at 14 to 18 dBm LO Input Power 4 0 dB 1 The 11975A Amplifier or a similar amplifier can be used to provide sufficient LO power 14 to 18 dBm to the mixers Leveled power capability of 16 dBm as is available with the 11975A is nec essary to achieve the maximum amplitude accuracy with the mixers Assuming the 1 meter cables supplied with the instrument are...

Страница 15: ...l 1 dB 11970K 3 dBm 11970A 5 dBm 11970Q 7 dBm 11970U 7 dBm 11970V 3 dBm 11970W 1 dBm RF Input SWR 11970K A Q U 2 2 1 11970V W 2 6 1 5061 5458 Cable Insertion Loss 8 dB at 2 GHz 1 1 dB at 6 GHz PHYSICAL CHARACTERISTICS Model Flange1 1 Waveguide attachment screws enter blind holes in the flanges of the mixers Weight X Y Z 11970K UG 595 U WR 42 0 17 kg 0 36 lb 36 mm 1 4 in 51 mm 2 0 in 90 mm 3 5 in 1...

Страница 16: ...16 Chapter1 General Information Specifications General Information ...

Страница 17: ...17 Operation 2 Operation ...

Страница 18: ...harge When installing the mixer you must always connect the SMA cables to the spectrum analyzer and LO amplifier BEFORE connecting them to the mixer This will minimize the danger of an electrostatic discharge damaging the mixer diodes 11975A ALC Switch BEFORE using the 11975A Amplifier to increase the LO input power set the amplifier ALC switch to the ON position When this switch is in the OFF pos...

Страница 19: ...SMA cables Part Number 5061 5458 each provided in the Option 009 Mixer Connection Kit connect the 11970 Mixer the spectrum analyzer and the 11975A Amplifier An example connection for an 8566B Spectrum Analyzer is shown in Figure 2 1 NOTE The example below shows an 8566B analyzer other spectrum analyzers do not require the amplifier and third SMA cable Figure 2 1 11970 Mixer Connections Leave the w...

Страница 20: ...rement errors can result To ensure proper alignment tighten each of the four flange screws in turn by small amounts moving clockwise around the flange NOTE 11970K and 11970A Mixers require flange screws that are different from those used with the 11970Q 11970U 11970V and 11970W 11970K and 11970A use Part Number 3030 0221 4 40 hex head screw 11970Q 11970U 11970V and 11970W use Part Number 1390 0671...

Страница 21: ...ly entering the data from a table Loading Data 1 Insert the conversion loss data disk from the factory or your own into the floppy drive of the analyzer 2 Press File then Load 3 Press Type More then select Corrections 4 Press Directory Select highlight drive A then press Directory Select again 5 Use the down arrow to select the file The factory supplied disk has a file with the OTH extension which...

Страница 22: ... to connect external mixers to the spectrum analyzer how to choose the band of interest how to store and activate conversion loss factors and how to use the signal identification functions Set up the equipment 1 Connect the signal source and harmonic mixer to the analyzer as shown in Figure 2 2 Figure 2 2 Harmonic Mixer Setup NOTE Agilent 5061 5458 SMA type cables should be used to connect the mix...

Страница 23: ...t band press Ext Mix Band and then press the desired band frequency range letter key For this example we will use band A which ranges from 26 5 GHz to 40 GHz NOTE To correct for the conversion loss of the harmonic mixer in use the analyzer amplitude correction feature is used 2 Press AMPLITUDE Y Scale More Corrections Select a correction set for use with external mixing The recommended set to use ...

Страница 24: ...e harmonics or left most for positive harmonics member of the pair is the correct response Figure 2 3 Identification of valid responses is achieved by simply turning on the signal identification feature instrument preset selects the Image Suppress signal identification mode Press Input Output Input Mixer Signal Ident On and note that now only the valid response 35 GHz remains Press Peak Search to ...

Страница 25: ...Chapter 2 25 Operation Using the Mixers with the E4407B Spectrum Analyzer Option AYZ Operation Figure 2 4 ...

Страница 26: ...following examples explain how to connect external mixers to the spectrum analyzer how to choose the band of interest how to store and activate conversion loss factors and how to use the signal identification functions Set up the equipment 1 Connect the signal source and harmonic mixer to the analyzer as shown in Figure 2 2 Figure 2 5 Harmonic Mixer Setup NOTE Agilent 5061 5458 SMA type cables sho...

Страница 27: ...ose a different band press Ext Mix Band and then press the desired band frequency range letter key For this example we will use band A which ranges from 26 5 GHz to 40 GHz NOTE To correct for the conversion loss of the harmonic mixer in use the analyzer amplitude correction feature is used 2 Press AMPLITUDE Y Scale More Corrections Select a correction set for use with external mixing The recommend...

Страница 28: ...id response pair are separated by 642 8 MHz and either the right most for negative harmonics or left most for positive harmonics member of the pair is the correct response Figure 2 6 Identification of valid responses is achieved by simply turning on the signal identification feature instrument preset selects the Image Suppress signal identification mode Press Input Output Input Mixer Signal Ident ...

Страница 29: ...Chapter 2 29 Operation Using the Mixers with the E4440A E4446A or E4448A PSA Series Spectrum Analyzer Option AYZ Operation Figure 2 7 ...

Страница 30: ...eter measurements This example explains how to connect external mixers to the spectrum analyzer how to choose the band of interest how to store conversion loss factors and how to use the optional automatic signal identification functions Set up the equipment 1 Figure 2 8 illustrates how to connect an external harmonic mixer to the spectrum analyzer Figure 2 8 External Mixer Setup NOTE Good quality...

Страница 31: ...ired band is selected refer to Table 2 1 and select the desired frequency band then use the full band function to enter this band d In the external mixer menu press FULL BAND then press the step up key until the letter preceding BAND in the active function area corresponds to the desired frequency band Table 2 1 External Mixer Frequency Ranges Frequency Band Frequency Range GHz Mixing Harmonic Con...

Страница 32: ...oss values that are stored in the analyzer for each frequency band are listed in Table 2 1 These values approximate the values for the Agilent 11970 series mixers Other conversion loss values may be entered into the spectrum analyzer in two ways The first method lets you to save the average conversion loss value for the entire band using AVERAGE CNV LOSS To activate this function a Press AUX CTRL ...

Страница 33: ...n loss data at the frequency shown c Use the step up key to step through the band entering the conversion loss at each step Signal Identification 5 The IF output of a harmonic mixer contains many mixer products frequencies of LO source 2LO source 3LO source nLO source As a result within a single harmonic band a single input signal can produce many responses only one of which is valid These respons...

Страница 34: ...ls uses the spectrum analyzer function SIG ID ON OFF When using this function smaller spans will yield more accurate measurements a Span down to 50 MHz b Press AUX CTRL EXTERNAL MIXER SIGNAL IDENT c Press SIG ID ON OFF until ON is selected Any signal not produced by the currently selected harmonic will be shifted horizontally on alternate sweeps see Figure 2 12 Therefore when viewing the display o...

Страница 35: ...Chapter 2 35 Operation Using the Mixers with the 856X Series Spectrum Analyzers Operation Figure 2 12 Response for Invalid Signals Figure 2 13 Response for Valid Signals ...

Страница 36: ...ge of the signal will yield a reading in the active block as shown in Figure 2 14 The true signal frequency is given with an identifier that the marker resides on an image If the marker is placed on a true signal and SIG ID AT MKR is activated the signal frequency will appear without the IMAGE notation as shown in Figure 2 15 8 To activate SIG ID AT MKR a Place a marker on a signal b Press AUX CTR...

Страница 37: ...Chapter 2 37 Operation Using the Mixers with the 856X Series Spectrum Analyzers Operation Figure 2 15 SIG ID AT MKR Performed on a True Signal ...

Страница 38: ...is similar Minor differences may be noted but the necessary deviations from these exact instructions will be obvious Equipment Connection Connect the equipment as shown in Figure 2 16 Use the following checklist to verify the connections Agilent 11970 LO IN to Agilent 70907B LO OUTPUT SMA cable 5061 5458 Agilent 11970 IF OUT to Agilent 70907B IF INPUT SMA cable 5061 5458 Figure 2 16 Agilent 11970 ...

Страница 39: ...xing band of operation Do not enter in the center frequency of the band directly Amplitude Calibration for a Single Frequency Enter the conversion loss at the desired frequency from either the calibration label on the end of the Agilent 11970 or the supplied calibration sheet by using the following key sequence State ext mixer CONV LOSS Enter the conversion loss value of the desired frequency then...

Страница 40: ... for measurements made with external mixers Twelve frequency bands are available Table 2 2 lists the start and stop frequencies of each band and also shows which local oscillator harmonic N is used for the mixing process Once a band is selected the frequency range is locked and the spectrum analyzer tunes with the local oscillator harmonic for that band only Table 2 2 External Mixing Bands and Ass...

Страница 41: ... an external mixer this is band A This is a front panel key SIGNAL IDENT signal identify Press Frequency More sig id options Executes a routine to identify real in band signals using either the image default or shift methods Several options are available under sig id options SIG ID CF Places the marker on the identified real signal and centers the signal on the display SIG ID MAN OFF Selects manua...

Страница 42: ...nd Corresponding Harmonic Numbers Band Range Harmonic Number and Sign of IF N Internal Mixing Agilent 71210C 2 9 6 2 6 0 12 7 12 5 19 9 19 7 22 0 26 5 1 2 3 4 Internal Mixing Agilent 71200C 2 9 6 2 6 0 12 8 12 6 22 0 1 2 4 External Mixing Agilent 70907A 7090 7B 709 10A 709 09A K 18 0 26 5 A 26 5 40 0 Q 33 0 50 0 U 40 0 60 0 V 50 0 75 0 E 60 0 90 0 W 75 0 110 0 F 90 0 140 0 D 110 0 170 0 G 140 0 22...

Страница 43: ...ernal memory The remote commands DISPOSE ALL FORMAT ERASE and DISPOSE AMP COR erase the amplitude correction pairs from memory NOTE DISPOSE ALL FORMAT and ERASE erases much more than the amplitude correction pairs from memory Do not use these commands without referring to the programmer s manual for the Agilent 70000 and Agilent 70900B to determine their effect on instrument programming Because AM...

Страница 44: ... an AMPCOR table Line 60 specifies that an EOI terminates the entire statement K specifies that an LF terminates the individual string entry Returned values are in the format where the frequency in Hz is listed first followed by the conversion loss in dB See the following example Point 1 50 00000000E 9 46 1 Point 2 52 00000000E 9 46 7 Point 3 53 00000000E 9 47 2 Point 4 Point 5 Point 6 Point 7 Poi...

Страница 45: ... the cables the maximum torque should not exceed 112 N cm 10 in lb Figure 2 17 External Mixer Connection CAUTION Before connecting the Agilent 11975A Amplifier set the ALC switch to ON Failure to do so can damage the mixer 2 Power up the spectrum analyzer and then the amplifier 3 Adjust the amplifier power to 16 dBm 4 To access the spectrum analyzer s millimeter bands press SHIFT and then the up a...

Страница 46: ... of the chart gives the frequency range of the mixer and the two vertical axis scales are calibrated in conversion loss and in reference level offset To correct the amplitude calibration of the spectrum analyzer to account for the conversion loss of the harmonic mixer press SHIFT 1 MHz which accesses the millimeter menu Then press SHIFT 5 MHz to access conversion loss entry and key in the appropri...

Страница 47: ...ssing SHIFT 3 MHz Upon completion one of three messages appears on the CRT SIGNAL NOT IDENTIFIED SIGNAL IDENTIFIED OUT OF BAND with the frequency or CENTER with the identified signal frequency The range of harmonic numbers through which the spectrum analyzer searches can be changed by accessing search start HN and search stop HN which are SHIFT 7 MHz and SHIFT 8 MHz respectively The second method ...

Страница 48: ...48 Chapter2 Operation Using the Mixers with the 8566B Spectrum Analyzer Operation Figure 2 19 Sample Mixer Calibration Table ...

Страница 49: ...49 Performance Tests 3 Performance Tests ...

Страница 50: ...required for the performance tests is listed in Table 3 1 for the 11970K Table 3 2 for the 11970A Table 3 3 for the 11970Q Table 3 4 for the 11970U Table 3 5 for the 11970V and Table 3 6 for the 11970W Test instruments other than those listed may be used provided their performance equals or exceeds the critical specifications listed in Tables 3 1 through 3 6 Test Record At the end of each test is ...

Страница 51: ...uipment for 11907K Instrument Critical Specifications Recommended Model Spectrum Analyzer LO and IF ranges compatible with mixer 8566B Synthesized Sweeper Frequency 18 to 26 5 GHz Output Level 10 dBm 8340A Amplifier Output Level 18 dBm leveled Frequency Range 3 to 4 5 GHz 11975A Power Meter Compatible with Power Sensor 436A Power Sensor SWR 1 3 8485A Directional Coupler1 1 Calibration data for the...

Страница 52: ...A Directional Coupler1 1 Calibration data for the coupling ration between the output arm and the auxil iary arm is necessary for accurate measurements Coupling 20 dB Directivity 40 dB Primary Arm SWR 1 05 Auxiliary Arm SWR 1 2 R752D Isolator Insertion Loss 1 5 dB Isolation 20 dB SWR 1 2 P N 0960 0082 Frequency Tripler Input Power 10 dBm minimum Conversion Loss 15 dB Spacekom Microwave2 TKa 1 2 Hon...

Страница 53: ...A Power Sensor SWR 1 3 6 GHz 8485A Directional Coupler1 1 Calibration data for the coupling ration between the output arm and the auxil iary arm is necessary for accurate measurements Coupling 20 dB Directivity 30 dB Auxiliary Arm SWR 1 2 Q752D Isolator Insertion Loss 2 dB Isolation 20 dB SWR 1 5 Q365A Frequency Tripler Conversion Loss 20 dB Spacekom Microwave2 TKa 1 2 Honeywell Inc Spacekom Micro...

Страница 54: ...ctron Dynamics Division Torrance CA Thermistor Mount SWR 1 3 6 GHz 478A Directional Coupler2 2 Calibration data for the coupling ration between the output arm and the auxil iary arm is necessary for accurate measurements Coupling 20 dB Directivity 30 dB Auxiliary Arm SWR 1 2 U752D Isolator Insertion Loss 2 dB Isolation 20 dB SWR 1 5 U365A Frequency Tripler Conversion Loss 20 dB Spacekom Microwave3...

Страница 55: ...patible with Power Sensor 432A Thermistor Mount SWR 2 0 Hughes 45774H 1100 Thermistor Mount SWR 1 3 6 GHz 478A Directional Coupler2 2 Calibration data for the coupling ration between the output arm and the auxiliary arm is necessary for accurate measurements Coupling 20 dB Directivity 20 dB Auxiliary Arm SWR 1 5 Hughes 45324H 1220 Variable Attentuator Range 0 to 15 dB TRG3 510V 385 3 Alpha Industr...

Страница 56: ...mpatible with Power Sensor 432A Thermistor Mount SWR 2 0 Hughes 45776H 1100 Thermistor Mount SWR 1 3 6 GHz 478A Directional Coupler2 2 Calibration data for the coupling ration between the output arm and the auxil iary arm is necessary for accurate measurements Coupling 20 dB Directivity 20 dB Auxiliary Arm SWR 1 5 Hughes 45326H 1220 Variable Attentuator Range 0 to 15 dB TRG3 W510 3 Alpha Industrie...

Страница 57: ...11970K 24 dB maximum 11970A 26 dB maximum 11970Q 28 dB maximum 11970U 28 dB maximum 11970V 40 dB maximum 11970W 47 dB maximum Frequency Response For an LO amplitude between 14 5 and 16 0 dBm 11970K 1 9 dB 11970A 1 9 dB 11970Q 1 9 dB 11970U 1 9 dB 11970V 2 1 dB 11970W 3 0 dB For an LO amplitude between 14 0 and 18 0 dBm 11970K 2 8 dB 11970A 2 8 dB 11970Q 2 8 dB 1197OU 2 8 dB 11970V 2 8 dB 11970W 4 ...

Страница 58: ...Mixer you MUST set the amplifier rear panel ALC switch to ON before you connect the amplifier into the test setup If the ALC switch is left in the OFF position the amplifier output power is high enough to destroy the mixer diodes 4 On the 11975A Amplifier set the rear panel ALC switch to ON then connect the power sensor to the free end of the cable installed on the OUTPUT connector of the amplifie...

Страница 59: ...Chapter 3 59 Performance Tests Conversion Loss and Frequency Response Performance Tests 11970V 50 0 GHz 11970W 75 0 GHz ...

Страница 60: ... SHIFT and MKR STP SIZE 11 Set spectrum analyzer CENTER FREQUENCY to 11970K 22 GHz 11970A 33 GHz 11970Q 41 GHz 11970U 50 GHz 11970V 62 GHz 11970W 92 GHz 12 On the spectrum analyzer press SHIFT and SWEEP CONT 13 Set the spectrum analyzer controls as follows For 11970K A Q or U SHIFT REFERENCE LEVEL 3 0 dB SCALE ENTER dB DIV 2 dB RES BW 1 MHz FREQUENCY SPAN 2 0 MHz CF STEP SIZE 5 0 0 MHz For 11970V ...

Страница 61: ...tor dB Directional Coupler Coupling Factor NOTE For the purposes of this measurement the directional coupler coupling factor is defined as the ratio of the power at the output flange to the power at the coupled flange 16 Calculate the conversion loss of the mixer with the following equation Conversion Loss Power Meter Reading 10 log Cal Factor Spectrum Analyzer Marker Amplitude Coupling Factor or ...

Страница 62: ...62 Chapter3 Performance Tests Conversion Loss and Frequency Response Performance Tests or Conversion Loss 10 03 dBm 0 232 39 78 dBm 8 93 dB 21 05 dB 17 Record the conversion loss in Table 3 7 ...

Страница 63: ... 11970W 110 0 GHz 21 Repeat steps 1 through 19 for LO inputs to the mixer of 14 5 dBm 16 0 dBm and 18 0 dBm In step 5 measure each of these levels at the end of the cable normally connected to the mixer LO input 22 Frequency response is the difference between the maximum and minimum conversion losses recorded in Table 3 7 For LO power levels between 14 5 and 16 0 dBm this difference must be less t...

Страница 64: ...64 Chapter3 Performance Tests Conversion Loss and Frequency Response Performance Tests Figure 3 1 Performance Test Setups 1 of 2 ...

Страница 65: ...Chapter 3 65 Performance Tests Conversion Loss and Frequency Response Performance Tests Figure 3 2 Performance Test Setups 2 of 2 ...

Страница 66: ...Test Record CONVERSION LOSS AND FREQUENCY RESPONSE for an LO POWER of_____________dBm Model Number____________ Date_____________ Serial Number______________Tested By _________________ Marker Frequency Marker Amplitude Power Meter Readings Power Sensor Cal Factor Directional Coupler Coupling Factor Conversion Loss GHz dBm dBm or dB dB dB ...

Страница 67: ...arker Amplitude Power Meter Readings Power Sensor Cal Factor Directional Coupler Coupling Factor Conversion Loss GHz dBm dBm or dB dB dB Frequency Response _______________dB Table 3 7 Conversion Loss and Frequency Response Test Record CONVERSION LOSS AND FREQUENCY RESPONSE for an LO POWER of_____________dBm ...

Страница 68: ...dth is calculated 1 Connect an SMA cable from the spectrum analyzer LO OUTPUT to the INPUT of the 11975A Amplifier Connect a second SMA cable to the amplifier OUTPUT 2 For 11970K Zero and calibrate the power meter For 11970A 11970Q 11970U 11970V or 11970W Connect the 478A Power Sensor to the power meter sensor cables then zero the power meter 3 On the 8566A B Spectrum Analyzer set the controls as ...

Страница 69: ...ALC switch to ON Then connect the power sensor to the free end of the cable connected to the output of the amplifier Set the power meter calibration factor to the value shown on the power sensor calibration label for 4 GHz 5 Adjust the amplifier OUTPUT POWER LEVEL control for a reading of 14 5 0 1 dBm on the power meter ...

Страница 70: ... the equipment as shown in Figure 3 1 7 On the 8566A B Spectrum Analyzer set the controls as follows For 11970K A Q or U SHIFT DATA STEP KSU FREQUENCY SPAN 3 0 MHz VIDEO BW 1 0 0 Hz RES BW 1 0 0 kHz For 11970V or W SHIFT DATA STEP KSU FREQUENCY SPAN 1 0 0 MHz VIDEO BW 3 MHz RES BW 3 MHz and CENTER FREQUENCY For 11970K 2 2 GHz For 11970A 3 3 GHz For 11970Q 4 1 GHz For 11970U 5 0 GHz For 11970V 6 2 ...

Страница 71: ...Factor Power Meter Correction Factor For example 10 03 dBm 9 82 dB 0 73 19 1 dBm 14 On the 8566A B press MARKER PEAK SEARCH then MKR REF LVL Record the marker amplitude in Table 3 8 15 Move the marker to the displayed noise floor or turn off the CW signal and record the marker amplitude in Table 3 8 Some sources may have excessive wide band noise when the RF signal is turned off so that the noise ...

Страница 72: ...0V 62 and 75 GHz 11970W 92 and 110 GHz 20 Repeat steps 1 through 18 for a power level of 16 0 dBm at the 11970 Mixer LO connector Table 3 8 Average Noise Test Record AVERAGE NOISE LEVEL Model Number______________ Date______________ Serial Number________________ Tested By______________ Center Frequency Power Meter Reading Power Meter Correction Factor Directional Coupler Coupling Factor Corrected P...

Страница 73: ...73 Service 4 Service ...

Страница 74: ...n anti parallel pair These diodes are the termination for the open end of the waveguide output By employing a matched diode pair even harmonic mixing is enhanced while odd harmonic mixing is suppressed The waveguide input is exponentially tapered in both height and width The height taper provides impedance matching between the high impedance waveguide input and the low dynamic impedance of the dio...

Страница 75: ...Chapter 4 75 Service Maintenance Service Figure 4 1 11970 Series Mixer Schematic Diagram Table 4 1 Model LPF Fco GHz 11970K 4 4 11970A 5 0 11970Q 5 0 11970U 6 2 11970V 5 4 11970W 6 2 ...

Страница 76: ...s 3 required Wrench 5 16 inch open end Ball Driver 3 32 inch 3030 0221 Socket Head Cap Screw 4 40 thread 375 inches long flange connecting screw for 11970K and 11970A 1390 0671 Socket Head Cap Screw captive 4 40 thread 290 inches long flange connecting screw for 11970Q 11970U 11970V or 11970W 11970 40001 11970K Waveguide Cap 11970 40002 11970A Waveguide Cap 11970 40003 Waveguide Cap for 11970Q or ...

Страница 77: ...4 118 9696622 INTERCON FIELD OPERATIONS Headquarters Agilent Technologies 3495 Deer Creek Rd Palo Alto CA 94304 1316 USA 415 857 5027 Japan Agilent Technologies Japan Ltd Measurement Assistance Center 9 1 Takakura Cho Hachioji Shi Tokyo 192 8510 Japan TEL 81 426 56 7832 FAX 81 426 56 7840 Australia Agilent Technologies Australia Ltd 31 41 Joseph Street Blackburn Victoria 3130 61 3 895 2895 Singapo...

Страница 78: ...78 Chapter4 Service Maintenance Service ...

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