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1. Model 86290B General Information Table 1 1 Specifications for 86290B Installed in 8620C 2 of 2 SPECIFICATIONS sa MODULATION Cont d Sensitivity nominal FM Mode FM NORM PL switch in FM position 20 MHz V 20 MHz V 20 MHz V 20 MHz V Phase Lock Mode FM NORM PL switch in PL position 6 MHz V 6 MHz V 6 MHz V 6 MHz V External AM at specified maximum power ON OFF Ratio Symmetry Attenuation for 5 volt Input Internal AM below maximum leveled power 1 kHz squarewave ON OFF Ratio RF Blanking ON OFF Ratio lan specifications are at 25 degrees C Allow 30 minutes warmup time gt See also the Supplemental Characteristics Table 1 2 3 Approach desired frequency from low frequency end of band 4 excluding coupler and detector variation 5 Use HP Model 432A power meter Sweep duration gt 10 seconds 6A positive input voltage decreases frequency T Specific requirements for compatibility with HP 8755A t6V 27 8 kHz square wave MODULATOR DRIVE output con nected to external AM input 8Subtract 0 5 dB for Option 004 9 Add 0 1 dB for Option 004 naida S N nessa neice line Dio ii ito ea ta ia aR ta seat iena iii amit lait iran aadatan raga General Information Model 86290B Table 1 2 Supplemental Characteristics for 86290B Installed in 8620C 1 of 2 SUPPLEM2. CAUTION BEFORE APPLYING POWER make sure the mainframe ac input is set for the available ac line voltage that the correct fuse is installed and that all normal safety precautions have been taken 1 14 Service 1 15 The information cautions and warnings in this manual must be followed to ensure safe opera tion and to keep the instrument safe SERVICE AND ADJUSTMENTS SHOULD BE PER FORMED ONLY BY QUALIFIED SERVICE PERSONNEL 1 16 Adjustment or repair of the opened instru ment with the ac power connected should be avoided as much as possible but when unavoid able should be performed only by qualified ser vice personnel who are aware of the hazard in volved 1 17 Capacitors inside the instrument may still be charged even though the instrument has been disconnected from its source of supply Servicing this instrument often re quires working with the instru ment s protective covers removed and ac power connected Extreme caution should be exercised since energy available at many points in the instrument may if contacted result in personal injury BEFORE SWITCHING THE INSTRU MENT ON ensure that all ac line pow ered devices connected to the in strument are connected to the protec tive earth ground Model 86290B 1 18 INSTRUMENTS COVERED BY MANUAL 1 19 Attached to the instrument is a serial number plate Figure 1 2 The serial number is in two parts The first four
3. SWEEP RE POWER OSCILLATOR PLUG IN METER RECORDER EXT INPUT OUTPUT LEVELED POWER Y OUTPUT l CRYSTAL DETECTOR EQUIPMENT Sweep Oscillator RF Plug in Oscilloscope Power Meter Thermistor Mount Crystal Detector HP 8470B Option 012 10 dB Attenuator HP 8491B Option 010 Power Splitter i HP 11667A CAUTION Do not apply any DC voltage to the RF OUTPUT connector or damage to the instrument may occur NOTE Power meter leveling should be used at slowest sweep rates Leveling is limited by response time of thermistor mount PROCEDURE 1 Connect equipment as shown in test setup Figure 3 10 External Power Meter Leveling 1 of 2 3 15 sass ash in serre icona iii ia ae ciclonica veli siriaca ridi Operation Model 86290B EXTERNAL POWER METER LEVELING 2 Set controls as follows 8620C 1 kHz SQ WAVE OFF rear panel DISPLAY BLANKING OFF rear panel DISPLAY BLANKING 86290B Fully clockwise MTR Power Meter Fully counterclockwise NORM Normal Press 8620C LINE pushbutton to ON LINE and FULL SWEEP pushbuttons should light indicating FULL SWEEP sweep mode is selected The 2 0 18 6 GHz lamp should light on 86290B Select range on power meter to obtain indication near top 1 3 of meter scale Adjust 86290B ALC GAIN control clockwise until leveling across band occurs as shown in Figure 3 6 If trace is not leveled or is only partially leveled as shown
4. 6 2 GHz HP Part No 86290 00014 6 0 12 4 GHz HP Part No 86290 00015 12 0 18 6 GHz HP Part No 86290 00040 and 2 0 18 6 GHz HP Part No 86290 00041 1 33 EQUIPMENT REQUIRED BUT NOT SUPPLIED 1 34 To have a complete operating sweep oscillator unit the Model 86290B RF Plug in must be installed in an 8620C mainframe NOTE All 86290B operation and maintenance procedures in this manual are set up using the HP Model 8620C mainframe The 86290B will not operate with an 8620A or 8620B mainframe 1 35 EQUIPMENT AVAILABLE 1 36 SERVICE ACCESSORIES 1 37 A service Accessories package for the 86290B RF Plug in is available for convenience in aligning and troubleshooting the mainframe and RF Plug in The Service Accessories Package as shown in Figure 1 3 contains a plug in extender cable two service boards and an adjustment tool The package may be obtained from Hewlett Packard by ordering HP Part Number 08620 60124 1 38 Reversing Extender Board 1 39 A reversing extender board Figure 1 4 is available for adjusting and troubleshooting when two circuit boards are extended at the same time 1 4 Model 86290B The reversing extender board is especially conve nient when two adjacent boards are extended This allows simultaneous access to the components of both boards One board is extended on the revers ing extender board with a second board on the standard extender board Figure 1 1 The bo
5. Non linear modulation mode Sine Wave Modulation ON Linear modulation mode No Modulation NOTE 1 Only one Modulation Mode should be UP ON at a time NOTE 2 In INTernal mode and when position 3 is DOWN the 86290B output power is clamped typically at 13 dBm by the Upper Power Clamp on the A1 ALC Assembly On some switches the UP position is marked ON on others the DOWN position is marked with a dot Figure 3 12 Switch Positions and Functions for ALC Function Switch AIS Operation Model 86290B BAND INDICATOR LAMP REPLACEMENT x Press mainframe LINE switch to OFF positon Remove 86290B RF Plug In from mainframe Remove front panel l NOTE If instrument has Option 004 rear panel RF OUT installed proceed to step b Disconnect cable W10 from RF OUTPUT connector J1 Remove Drawer Latch Handle 0 by removing screw and latch spring 0 i Note position of spring and location of hole 1 for reinstalling Remove four screws 0 from front panel two on each side Pull front panel out of frame slightly and remove connector J7 from A7 Master Board l Remove and replace lamp a Lift contact spring slightly and rotate it to expose base of lamp A8DS1 A8DS4 Remove old lamp NOTE Lifting the contact spring too far may bend it red ucing spring tension b Install new lamp and replace contact spring over base Install front panel by reversing instructions in step 3 Figure 3 13
6. checks assume that the 86290B RF Plug in is in stalled in an 8620C Sweep Oscillator mainframe The checks cover the RF Plug in and mainframe therefore if the correct indications are not obtain ed trouble may be in either of the units If the RF Plug in is suspected perform applicable per formance tests in Section IV of this manual and if necessary the related adjustments in Section V If correct indications are still not obtained refer to the troubleshooting information in Section VIII to isolate the problem 3 7 OPERATING INSTRUCTIONS Any interruption of the protective grounding conductor inside or outside the instrument or discon necting the protective earth terminal could make this instrument danger ous NOTE Instrument may not meet maximum leveled power specifications when UNLEVELED lamp is lit 3 8 Internal Leveling 3 9 The most convenient method of RF outpu leveling is internal leveling A portion of the RE output is coupled from a Directional Coupler DC to a Detector CRI A proportional dc voltage i applied to an operational amplifier in the 86290E ALC Amplifier Assembly Al The Operator Checks in Figure 3 4 are performed in the interna leveling mode 3 10 External Power Meter Leveling 3 11 Power leveling can be obtained with power meter and power splitter or directione coupler as shown in Figure 3 10 A sample of th RF output signal is routed to a power meter t produce a dc voltage prop
7. Band Indicator Lamp Replacement 1 of 2 3 20 Model 86290B Operation BAND INDICATOR LAMP REPLACEMENT Cont d RF OUTPUT J1 Figure 3 13 Band Indicator Lamp Replacement 2 of 2 3 21 3 22 HEWLETT PACKARD Ca Part of HP Part No 86290 90028 Printed in U S A
8. For information concerning a serial number prefix that is not listed on the title page or in the Manual Changes supplement contact your nearest Hewlett Packard office General Information 1 23 DESCRIPTION 1 24 The HP Model 86290B is designed as a plug in for the 8620C mainframe The mainframe and 86290B RF Plug in make up a solid state sweep signal source with a frequency range of 2 0 18 6 GHz The frequency range is swept in either one c6 ntinuous band or in three single bands In single band operation Band 1 sweeps 2 0 6 2 GHz Band 2 sweeps 6 0 12 4 GHz and Band 3 sweeps 12 0 18 6 GHz When Band 4 is selected on the mainframe the full frequency range of 2 0 18 6 GHz is swept continuously The fundamental frequency of 2 0 6 2 GHz is generated by a YIG Tuned Oscillator YTO A YTO test signal typically 10 dBm is available at the rear panel AUX OUT connector A YIG Tuned Multiplier YTM provides the frequency range from 6 0 to 18 6 GHz 1 25 The RF output of the instrument is control led by the front panel POWER LEVEL control Power can be leveled externally or internally across the band using a conventional power sampl ing and feedback technique The automatic level control ALC switch selects the mode of leveling either internal INT external crystal EXT or power meter MTR A front panel EXT INPUT connector and ALC GAIN control are provided to use with an external leveling loop Wh
9. OPERATION contains operating instructions for the instrument d SECTION IV PERFORMANCE TESTS contains information required to verify that instrument performance is in accordance with published specifications e SECTION V ADJUSTMENTS contains in formation required to properly adjust and align the instrument after repair f SECTION VI REPLACEABLE PARTS contains information required to order all parts and assemblies g SECTION VII MANUAL CHANGES contains backdating information to make this manual compatible with earlier equipment configurations h SECTION VIII SERVICE contains decrip tions of the circuits schematic diagrams parts location diagrams and troubleshooting procedures to aid the user in maintaining the instrument 1 4 Supplied with this manual is an Operating Information Supplement The Supplement is a copy of the first three sections of this manual and should be kept with the instrument for use by the operator Additional copies of the Operating In formation Supplement can be ordered through your nearest Hewlett Packard office The part number is listed on the title page 1 5 Also listed on the title page of this manual is a Microfiche part number This number can be used to order 4 x 6 inch microfilm transparencies of the manual Each microfiche contains up to 60 photo duplicates of the manual pages The mic rofiche package also includes the latest Manual Changes supplement as well as all per
10. 200 kHz Residual FM in 10 kHz bandwidth FM NORM PL switch in NORM position CW Mode 1 5 MHz C 100 kHz 600 kHz 300 kHz 2 0 MHz C 100 kHz 600 kHz 300 kHz lt 10 kHz peak lt 20 kHz peak lt 30 kHz peak lt 30 kHz peak gt 10dBm gt 10dBm gt 10 dBm gt 10 dBm 10 mW 10 mW 10 mW 10 mW lt 0 7 dB POWER OUTPUT Maximum Leveled Power 25 C 3 Power Variations at maximum leveled power Internally Leveled Externally Leveled Crystal Detector lt 0 7 dB lt 0 8 dB lt 0 9 dB lt 0 15 dB lt 0 15 dB lt 0 15 dB lt 0 15 dB lt 0 15 dB lt 0 15 dB gt 25 dB gt 25 dB gt 25 dB gt 50 dB gt 50 dB gt 50 dB gt 55 dB gt 55 dB gt 55 dB gt 55 dB lt 1 9 1 i 1 lt 19 1 lt 1 9 1 75 MHz 75 MHz 75 MHz 75 MHz 5 MHz 5 MHz 5 MHz 5 MHz lt 0 15 dB lt 0 15 dB Power Meter Spurious Signals below fundamental at specified maximum power 2 18 6 GHz Harmonically Related Signals Nonharmonics Residual AM AM noise in 100 kHz band width below fundamental at specified maximum power Source SWR 500 Nominal a n mele 2 18 GHz EA Leveled MODULATION External FM Maximum Deviations for Modulation Frequencies DC to 100 Hz 100 Hz to 2 MHz
11. 781 HP 8830 0024 HP 86290 60020 HP 86290 60033 General Information Model 86290B 1 12 Extender Cable 08620 60032 Moves RF Plug in outside mainframe for alignment or service Adjustment Tool 8830 0024 Fits miniature adjustment slot on potentiometers 36 Pin Service Board 08620 60037 Allows probing RF Section interface connec tor or rear panel programming connector on all mainframes except 8620C during per formance testing or troubleshooting of 8620 Series mainframes 50 Pin Service Board 08620 60125 Allows probing rear panel programming connector during performance testing or troubleshooting of HP Model 8620C Sweep Oscillator mainframe Figure 1 3 Service Accessories HP Part Number 08620 60124 Q Model 86290B General Information Figure 1 4 Reversing Extender Board 86290 60033 36 Pin Male Connector 2 x 18 HP Part No 1251 0483 2 36 Pin Female Connector 2 x 18 HP Part No 1251 0484 1 inch 20 Gage Wire HP Part No 8151 0011 Figure 1 5 RF Section 36 Pin Extender 08621 60056 1 13 1 14 en nl Model 86290B Installation SECTION Il INSTALLATION 2 1 INTRODUCTION 2 2 This section provides installation instructions for the Model 86290B RF Plug in and its ac cessories This section also includes information about initial inspection and damage claims preparation for using the RF Plug in and packag ing storage an
12. ENTAL CHARACTERISTICS NOTE Values in this table are not specifications but are typical characteristics included for user information 8 MHz 8 MHz 30 MHz 300 kHz 600 kHz 900 kHz 900 kHz 0 1 dB C 0 1 dB C 0 1 dB C 0 1 dB C gt 10 dB gt 10 dB gt 10 dB gt 10 dB MODULATION External AM at specified maximum power Rise Time lt 1 5 psec lt 1 5 psec lt 1 5 usec lt 1 5 usec Internal AM Sweep Time at maximum sweep speed 10 msec 10 msec 10 msec 10 msec CW Remote Programming Settling Time FM switch in PL or FM 5 msec 5 msec 5 msec 10 msec FREQUENCY Linearity Correlation between frequency and SWEEP OUT voltage in MANUAL mode Sweep Time gt 0 1 sec Drift 10 minute period after 30 minute warmup POWER OUTPUT Power Level Stability with temperature change Power Level control range while maintaining 60 40 symmetry of internal 1 kHz square wave GENERAL Crystal Input Approximately 50 to 750 mV for specified leveling at rated output for use with negative polarity detectors such as HP Model 780 series Directional Detectors and HP Models 8470 and 8472 series Crystal Detectors Switch Points Band 4 selected Broadband switch points are at 6 2 and 12 4 GHz Frequency overlap is nomin ally 0 to 20 MHz at switch points Frequency Reference Output Typically 1V GHz 0 035V available at re
13. EQ SYNC rear panel output to the X Y Recorder DELAY MUTE input Using this DELAY MUTE feature will give a glitch free plot for test devices that have relatively flat responses at the switch point frequencies However test devices having a rapid rate of change across a switch point such as the Band Pass filter illustrated in Figure 3 1 may still show a slight glitch Since it may not be immediately apparent that the glitch is caused by the test setup rather than the device under test it is recom mended that a reference plot be made using the X Y Recorder PEN LIFT input whenever glit ches appear in the test device output near the 6 2 GHz and 12 4 GHz switch point frequencies The PEN LIFT Input will not affect the switch points therefore the source of the glitch can be easily recognized This is illustrated in Figure 3 1 3 28 Retrace time of the 8620C mainframe when using an 86290B is much faster than sweep time When RF Blanking is used 86290B power output goes to zero during retrace If an X Y Recorder is connected the recorder pen will not be able to go to zero power as rapidly as the 86290B Therefore the retrace line on the X Y Recorder will not resemble actual RF response This can be improved by placing the mainframe rear panel RF BLANKING OFF switch in the Model 86290B 6 GHz SWITCH POINT Operation 12 4 GHz SWITCH POINT REFERENCE PLO
14. EVELING Set controls as follows 8620C TRIGGER TIME SECONDS Vernier 1 kHz SQ WAVE OFF rear panel DISPLAY BLANKING OFF rear panel DISPLAY BLANKING 86290B RF OUTPUT POWER LEVEL ALC GAIN Fully clockwise FM NORM PL rear panel NORM Normal Press 8620C LINE pushbutton to ON LINE and FULL SWEEP pushbuttons should light indicating FULL SWEEP mode is selected The 2 18 6 GHz lamp should light on 86290B Adjust ALC GAIN and POWER LEVEL controls fully clockwise for maximum RF power OUTPUT and maximum ALC Loop gain Adjust PEAK control for maximum RF power One of the conditions shown in Figures 3 5 through 3 9 should be displayed on oscilloscope If trace is unleveled as shown in Figures 3 5 or 3 7 or partially leveled and UNLEVELED lamp is on turn POWER LEVEL control counterclock wise until trace is level See Figures 3 6 and 3 8 If ALC loop gain is too high oscillations may occur as shown in Figure 3 9 To remove oscillations reduce ALC loop gain by turning ALC GAIN control counterclockwise To use leveled RF power output for testing external equipment make connection at point marked Leveled Output Power Figure 3 11 External Crystal Detector Leveling 2 of 2 3 18 Model 86290B Operation A1S1 TOP POSITIONS FUNCTIONS 1 and 2 Spares Upper Clamp Removed See Note 2 below Upper Clamp In INT operation only Square Wave Modulation ON No Modulation
15. HP Archive This vintage Hewlett Packard document was preserved and distributed by www hparchive com Please visit us on the web For free distribution only Thanks to on line curator Bernhard Voss for supplying and scanning this vintage document OPERATING INFORMATION 86290B RF PLUG IN HEWLETT PACKARD E General Information 1 0 86290B 4 6 0 80 Gutierti i RF TEST CABLE EXTENDER BOARD NOTE See paragraph 1 34 for part number information Figure 1 1 Model 86290B RF Plug In with Accessories Supplied Model 86290B a i 7 Model 86290B General Information SECTION GENERAL INFORMATION 1 1 INTRODUCTION 1 2 This Operating and Service manual contains information required to install operate test ad just and service the Hewlett Packard Model 86290B RF Plug in Figure 1 1 shows the instru ment and accessories supplied This section cov ers instrument identification description op tions accessories specifications and other basic information l 1 3 This manual is divided into eight sections which provide information as follows a SECTION I GENERAL INFORMATION contains the instrument description and specifications as well as the accessory and recommended test equipment list b SECTION II INSTALLATION contains information relative to receiving inspection preparation for use mounting packing and shipping c SECTION III
16. O should light on 86290B sai Check that the instrument is sweeping correctly This is indicated by a continuous signal level line below zero volt dc level on oscilloscope Adjust PEAK control for maximum signal on oscilloscope UNLEVELED lamp O may be lit If UNLEVELED lamp is lit reduce output power by turning 86290B POWER LEVEL control counterclockwise until UNLEVEL ED lamp goes out This is adjustment point for maximum leveled power Oscilloscope Q trace should be leveled Refer to Figures 3 5 and 3 6 for typical oscilloscope display of Sequential Sweep unleveled and leveled RF Power Output Refer to Figures 3 7 and 3 8 for single band displays Set 8620C MARKERS switch to INTEN position Markers should appear on oscilloscope trace as bright dots Adjust oscilloscope intensity for best contrast Set MARKERS switch to AMPL position Markers should appear on oscilloscope trace as pips Set 8620C MODE switch 25 to MANUAL position and slowly adjust MANUAL control Trace dot should move across oscilloscope Return 8620C MODE switch to AUTO Press 8620C CW pushbutton 7 si pushbutton should light and trace on oscilloscope should be a dot Change frequency Q with CW MARKER control Dot should move across oscilloscope Figure 3 4 Operator s Checks 3 of 4 3 12 Model 86290B OPERATOR S CHECKS Press 8620C CW VERNIER pushbutton switch O pushbutton should light Adjust CW VERNIER control White point
17. P 11664A HP 5340A Option H10 HP 3310A HP 3400A HP 432A 8478B H 32 HP 721A General Radio MT3A HP 536A HP 537A HP P532A HP P281B Option 013 HP 11667A HP 11691D Option C0 2 Model 86290B Instrument Air Line 2 required Crystal Detector 2 required 3 dB Attenuator 10 dB Attenuator Adjustable Short Cable Extender Cable BNC Tee 2 required Adjustment Tool Extender Board Extender Board Critical Specifications 20 cm long APC 7 connectors Frequency 0 01 to 18 6 GHz SWR lt 1 5 to 12 4 GHz lt 1 7 to 18 6 GHz Connector Type N Male Attenuation 3 dB 0 3 dB Frequency DC to 18 6 GHz Attenuation 10 dB 0 5 dB Frequency DC to 18 6 GHz Frequency Range 2 0 to 18 6 GHz 2 ft long BNC connectors See Figure 1 3 Connectors BNC jack and plug See Figure 1 3 Supplied with instrument See Figure 1 1 Reversing See Figure 1 4 P Performance Test A Adjustments T Troubleshooting Thermistor Mount 8478B and 10 dB Attenuator 8491B Option 010 are matched for optimum performance to 18 6 GHz This matched set is an HP 8478B H 32 These parts are included in Service Accessories Package 08620 60124 General Information Table 1 4 Recommended Test Equipment 2 of 2 Recommended Model HP 11567A HP 8470B Option 012 HP 8491B Option 003 HP 8491B Option 010 Microlab FXR SO 6MN HP 11086A HP 08620 60032 HP 1250 0
18. Panel Controls Connectors and Indicators 3 of 4 Option 004 3 6 Model 86290B Operation FRONT PANEL FEATURES OPTION 004 7 RF OUTPUT PEAK control R2 Optimizes RF removing RF Plug in After installing handle output power for selected frequency range and locks to hold RF Plug in in place assures minimum harmonically related signals O RF ON OFF switch 1 Turns RF power on and off This is useful when zeroing a power meter i or establishing a zero power reference on an Drawer Latching Handle Aids in installing and X Y recorder Figure 3 2 Front Panel Controls Connectors and Indicators 4 of 4 Option 004 3 7 Operation 3 8 nni EPAL AIA lizza mini tisaini iii iii iii dei Model 86290B REAR PANEL FEATURES Q Rear Panel Heatsink Provides heat dissipation and mounting for YTM and YTO coil driver transistors Q1 and Q2 and refer ence resistors R5 and R6 Interface Connector P1 Provides interconnec tion between 8620C mainframe and 86290B RF Plug in AUX OUT J6 Provides YIG tuned Oscillator RF output signal of 2 0 6 2 GHz Cover pro vided should be installed when AUX OUT not used 4 FM NORM PL switch 3 Operates in conjunc tion with FM input connector to provide op timum performance for either normal sweep NORM frequency modulation FM or phase lock PL operation If FM or PL modes of operation are not being used switch should be in NORM FREQ REF BNC
19. T WITHOUT DELAY MUTE REFERENCE PLOT GLITCH WITH DELAY MUTE CAUSED BY 12 4 GHz SWITCH POINT RESPONSE PLOT OF DEVICE UNDER TEST WITH DELAY MUTE Figure 3 1 Typical Recorder Plot of Device Under Test and Reference Plots OFF position If a zero power reference line is desired one may be drawn by triggering a single sweep with 86290B power off front panel RF ON OFF switch OFF 3 29 X Y RECORDER MODIFICATION KIT 3 30 A modification kit is available to convert older X Y Recorders to obtain DELAY MUTE capability See the X Y Recorder Operating and Service Manual or contact your nearest Hewlett Packard Office for part number information Ad dresses of HP Offices are provided at the rear of this manual 3 31 OPERATOR S MAINTENANCE 3 32 Operator maintenance on the 86290B con sists of replacing defective front panel Band in dicator lamps Removal and replacement pro cedures are contained in Figure 3 13 3 33 Replacement of the UNLEVELED lamp is shown in Section VIII as a maintenance procedure See Figure 8 2 3 3 agin ee Operation Model 86290B FRONT PANEL FEATURES POWER LEVEL 4 J Frequency Band Display indicators A8DS1 1 UNLEVELED lamp DS1 Lights if output power is A8DS4 2 0 6 2 GHz 6 0 12 4 GHz unlevel across selected frequency range Illuminates with Band 1 selected on mainframe Illuminates with Band 2 selected on ma
20. ar panel FREQ REF connector 1 8 __ _ 1__ad d i ii 1 11 v r r r r111212nmRzmmmb Model 86290B General Information Table 1 2 Supplemental Characteristics for 86290B Installed in 8620C 2 of 2 GENERAL Cont d Fundamental Oscillator YIG Tuned 2 0 to 6 2 GHz Oscillator Oscillator signal available at rear panel AUX OUT connector typically 10 dBm Net Weight 9 6 pounds 4 4 kg Shipping Weight 13 pounds 5 9 kg Dimensions Height 5 inches 12 7 cm Width 5 13 16 inches 14 7 cm Depth 12 inches 30 5 cm Options Option 004 Rear Panel RF Output Option 005 APC 7 RF Output Connector Table 1 3 Parts Required for 86290B Options 86290 00004 86290 00023 86290 20031 Panel Front Lower Cover Rear Panel RF Cable RF Coupler to Output 86290 60005 Connector Rear RF Output 1250 0118 Connector Rear EXT ALC INPUT 86290 60007 Connector APC 7 1 9 General Information Sweep Oscillator Spectrum Analyzer with external mixer Oscilloscope with Dual Trace Vertical Amplifier 10 1 Divider Probe DC Digital Voltmeter Swept Amplitude Analyzer and Oscilloscope Mainframe Detectors 2 required Frequency Counter Function Generator RMS Voltmeter Power Meter Thermistor Mount and 10 dB Attenuator DC Power Supply Ad
21. ard may be obtained from Hewlett Packard by order ingPart No 86290 60033 1 40 i Section 36 Pin Extender 1 41 A 36 pin extender is available for extending the RF Section approximately 1 inch This allows easy access to components located near the front of the instrument This extender shown in Figure 1 5 may be obtained from Hewlett Packard by ordering Part No 08621 60056 1 42 Model 8755B 182T Swept Amplitude Analyzer and Oscilloscope 1 43 The Model 8620C 86290B Sweeper is com patible with the Hewlett Packard Model 8755B Swept Amplitude Analyzer For all swept amplitude measurements the 27 8 kHz squarewave modulation is applied directly to the 8620C rear panel EXT AM connector This elim inates the need for an external modulator thus providing maximum available power to a test setup 1 44 Power Meters and Crystal Detectors 1 45 The Hewlett Packard Model 432A Power Meter may be used for external leveling of the Model 86290B Plug in RF Output Power Exter nally leveled power is also available using an HP 8470B Crystal Detector Section III contains detailed instructions for using the external power leveling systems 1 46 Model 8410B 8411A Network Analyzer 1 47 The Model 8620C 86290B Sweeper pro vides multi octave phase gain measurement capabil ity with the Hewlett Packard Model 8410B Net work Analyzer System The combination of the Model 8410B Network Analyzer the Model 8411A Frequency Converter and an a
22. connector J5 Provides approxi mately 1 volt GHz ramp signal output O FM BNC connector J4 Input connector for FM modulation signal or phase locking error signal 0 SEQ SYNC connector J3 Provides RF blanking output for timing signal to external equipment Figure 3 3 Rear Panel Connectors and Switch 1 of 2 Model 86290B Operation REAR PANEL FEATURES OPTION 004 0 Rear Panel Heatsink Provides heat dissipation 0 FM NORM PL switch S3 Operates in conjunc and mounting for YTM and YTO coil driver tion with FM input connector to provide opti transistors Q1 and Q2 and reference resistors mum performance for either noritial sweep RS and R6 NORM frequency modulation FM or phase lock PL operation If FM or PL modes of opera 2 Interface Connector P1 Provides interconnec tion are not being used switch should be in tion between 8620C mainframe and 86290B NORM RF Plug in FREQ REF BNC connector J5 Provides approxi AUX OUTIG Provides YIG tuned Oscillator RF mately 1 volt GHz ramp signal output EPU Sena oh 20430 Hz EXT ALC INPUT BNC connector J10 Input for 0 RF OUT connector J9 Type N 50 ohm RF output external leveling from power meter or crystal connector APC 7 for Option 005 detector FM BNC connector J4 Input connector for FM CAUTION modulation signal or phase locking error signal Do not apply any DC voltage to the RF SEQ SYNC connector J3 Provides RF blanking OUTPUT
23. connector or damage to the output for timing signal to external equip instrument may occur ment Figure 3 3 Rear Panel Connectors and Switch 2 of 2 Option 004 3 9 Operation Model 86290B OPERATOR S CHECKS Figure 3 4 Operator s Checks 1 of 4 3 10 Model 86290B OPERATOR S CHECKS SWEEP RF OSCILLATOR PLUG IN OSCILLOSCOPE a CRYSTAL DETECTOR EQUIPMENT Sweep Oscillator HP 8620C RF Plug in HP 86290B Oscilloscope HP 182C 1801 A 1820C Crystal Detector HP 8470B Option 012 10 dB Attenuator HP 8491B Option 010 CAUTION Do not apply any DC voltage to the RF OUTPUT connector or damage to the instrument may occur NOTE All procedures are written using the 8620C Sweep Oscillator The 86290B will not operate with an 8620A or 8620B mainframe PROCEDURE 1 Connect equipment as shown in test setup 2 Set controls as follows 8620C MARKERS MODE TIME SECONDS TIME SECONDS Vernier 1 kHz SQ WV OFF rear panel DISPLAY BLANKING OFF rear panel DISPLAY BLANKING RF BLANKING OFF rear panel Figure 3 4 Operator s Checks 2 of 4 Operation 3 11 Operation Model 86290B OPERATOR S CHECKS 86290B RF OUTPUT POWER LEVEL ALC SLOPE OFF FM NORM PL rear panel NORM Normal Press LINE pushbutton switch to ON LINE and FULL SWEEP pushbuttons should light The 2 0 18 6 GHz lamp
24. d shipment 2 3 INITIAL INSPECTION 2 4 Inspect the shipping container for damage If the shipping container or cushioning material is damaged it should be kept until the contents of the shipment have been checked for completeness and the instrument has been checked mechanically and electrically The contents of the shipment should be as shown in Figure 1 1 Procedures for checking electrical performance are given in Section IV If the instrument combination does not pass the elec trical performance tests refer to the 86290B Ad justments Section V in this manual If after the 86290B Adjustments have been made the instru ment combination still fails to meet specifications refer to mainframe Adjustments in the 8620C mainframe manual If a circuit malfunction is suspected refer to troubleshooting information in Section VIII of this manual or 8620C mainframe manual If the instrument does not pass the above electrical tests or if the shipment contents are in complete or if there is mechanical damage or defect notify the nearest Hewlett Packard office If the shipping container is damaged or the cushioning material shows signs of stress notify the carrier as well as the Hewlett Packard office Keep the shipping materials for carrier s inspec tion The HP office will arrange for repair or replacement without waiting for claim settlement 2 5 PREPARATION FOR USE 2 6 Power Requirements 2 7 When the Model 86290B RF Plug in
25. digits and letter are the serial number prefix the last five digits are the suffix The prefix is the same for all identical in struments it changes only when a change is made to the instrument The suffix however is assigned sequentially and is different for each instrument The contents of this manual apply to instruments with the serial number prefix es listed under SERIAL NUMBERS on the title page SERIAL NUMBER rr PREFIX SUFFIX n an Figure 1 2 Serial Number Plate 1 20 An instrument manufactured after the printing of this manual may have a serial number prefix that is not listed on the title page This unlisted serial number prefix indicates the instru ment is different from those described in this man ual The manual for this newer instrument is ac companied by a yellow Manual Changes supple ment This supplement contains change informa tion that explains how to adapt the manual to the newer instrument 1 21 In addition to change information the sup plement may contain information for correcting errors in the manual To keep this manual as cur rent and accurate as possible Hewlett Packard recommends that you periodically request the latest Manual Changes supplement The supple ment for this manual is identified with this manual s print date and part number both of which appear on the manual s title page Com plimentary copies of the supplement are available from Hewlett Packard 1 22
26. en the UN LEVELED light is on it indicates that the leveling loop is open over a portion of the swept band BNC connectors on the rear panel allow for exter nal FM signal inputs a 1 V GHz frequency refer ence voltage output and a SEQ SYNC timing signal 1 26 Options for the Model 86290B RF Plug in are available to 1 substitute a rear panel RF OUTPUT connector and also route the EXT IN PUT connector to the rear panel and 2 providea front panel or rear panel APC 7 RF OUTPUT connector o Da ae 1 27 Option 004 1 28 The 86290B Option 004 has the RF OUT PUT and ALC EXT INPUT connectors mounted on the rear panel instead of the front panel Instal lation information may be obtained from the nearest Hewlett Packard Field Service center In stallation of the Option 004 requires the parts listed in Table 1 3 1 3 General Information 1 29 Option 005 1 30 The standard 86290B RF Plug in uses a Type N RF OUTPUT connector The 86290B Option 005 provides an APC 7 OUTPUT con nector See Table 1 3 for parts required to install Option 005 1 31 ACCESSORIES SUPPLIED 1 32 Figure 1 1 shows the HP Model 86290B RF Plug in the four dial scales to be mounted in the mainframe the RF Test Cable HP Part No 86290 60032 for testing and troubleshooting the RF Section and an extender board HP Part No 86290 60020 to extend printed circuit boards for troubleshooting The four scales supplied are as follows 2 0
27. er above CW VERNIER control should move Dot on oscilloscope should also move across CRT at a very slow rate and through a narrow range CW VERNIER slide switch selects a 0 1 multiplier X 1 position for CW vernier scale in X1 position scale is read directly Press 8620C CW pushbutton CW VERNIER Pushbutton lamp should turn off Press 8620C AF pushbutton O AF and cw pushbuttons should be lit Deviation from CW frequency is selected by AF control and adjusting it moves white pointer above AF control AF slide switch O selects a 0 1 multiplier X 1 position a 1 0 multiplier X1 position or a 10 multiplier X10 position Adjust POWER LEVEL control 15 fully clockwise Adjust 8620C AF control 0 between zero and maximum Sweep trace should be displayed on oscil loscope and should change as AF control is adjusted Figure 3 4 Operator s Checks 4 of 4 Operation 3 13 CIO ATI EEE EA ini li iii nda it ID ii CI EIA iii ci e Operation Model 86290B ry 2 0GHz 6 0 GHz 12 0 GHz 18 6 GHz Figure 3 5 Unleveled RF Power Output Figure 3 6 Leveled RF Power Output for Sequential Sweep for Sequential Sweep Figure 3 7 Unleveled RF Power Output Figure 3 8 Leveled RF Power Output for Single Band Band 1 for Single Band Band 1 0 VDC POWER OUTPUT ALC LOOP OSCILLATION Figure 3 9 Oscillations Due to Excessive ALC Loop Gain 3 14 Model 86290B Operation EXTERNAL POWER METER LEVELING
28. handle locks to hold RF Plug in in place O RF ON OFF switch S1 Turns RF power on and off This is useful when zeroing a power meter or establishing a zero power reference on an X Y recorder Figure 3 2 Front Panel Controls Connectors and Indicators 2 of 4 3 5 GE eee ete E O E EOE itera ieee TEE sai Operation Model 86290B FRONT PANEL FEATURES OPTION 004 o Frequency Band Display indicators POWER LEVEL control R1 Adjusts RF output i A8DS1 A8DS4 power Clockwise rotation increases output power 2 0 6 2 GHz Illuminates with Band 1 selected on mainframe 0 ALC switch S2 Selects INT internal EXT ex 6 0 12 4 GHz Illuminates with Band 2 ternal or MTR power meter power leveling selected on mainframe modes 12 0 18 6 GHz Illuminates with Band 3 0 ALC GAIN control R4 Adjusts ALC leveling amp selected on mainframe lifier gain when system is using an external leveling loop Clockwise rotation increases 2 0 18 6 GHz Illuminates with Band 4 ALC loop gain selected on mainframe Band 4 is the Sequential Q ALC SLOPE OFF control R3 Compensates for Sweep high frequency power losses in external RF cables by attenuating power at lower frequen UNLEVELED lamp DS1 Lights if output power is cies This compensation provides a leveled unlevel across selected frequency range or if RF signal output The OFF position removes automatic leveling is not used all compensation Figure 3 2 Front
29. ift the phase difference between the CW frequency and the reference frequency reference oscillator is detected producing a dc voltage The dc voltage is a correction signal which restores the CW fre quency to its previous point Stability of this CW frequency is determined by the stability of the reference oscillator 3 2 Model 86290B 3 24 X Y Recorder Operation 3 25 In Sequential Sweep operation Band 4 the power output of the 86290B goes to zero at each switchpoint for a brief time interval This is approximately 6 ms between Band 1 and 2 and approximately 8 ms between Bands 2 and 3 See Section VIII for a complete explanation of Se quential Sweep operation 3 26 When an X Y Recorder is used to plot the detected RF amplitude from the 86290B the recorder s frequency response is not adequate to respond fully to this zero power interval and will indicate a small negative going spike only The width of this spike is a function of sweep speed and is essentially zero for sweep times greater than 20 seconds 3 27 Recorders without DELAY MUTE capability will display the zero power spikes at each switchpoint and is unavoidable However in formation loss caused by the spikes can be eliminated by using a slow enough sweep time lt 20 sec Recorders with DELAY MUTE capability can be operated so that zero power spikes are eliminated This is accomplished by con necting the 86290B S
30. in Figure 3 5 with ALC GAIN fully clockwise reduce RF OUTPUT power This is done by adjusting POWER LEVEL control counterclockwise until leveling occurs as shown in Figure 3 6 If oscillations appear on trace as shown in Figure 3 9 turn ALC GAIN control counterclockwise With proper leveling across the band the 86290B UNLEVELED light should be out To use leveled RF Power output for testing external equipment make connection at point marked Leveled Power Output Figure 3 10 External Power Meter Leveling 2 of 2 Model 86290B Operation EXTERNAL CRYSTAL DETECTOR LEVELING SWEEP RE OSCILLATOR PLUG IN sj A THERMISTOR MOUNT CRYSTAL LH DETECTOR i L EP m U MAIN LINE POWER 1 DIRECTIONAL COUPLER CRYSTAL DETECTOR Cables in the ALC loop must be kept lt 1 foot in length for best ALC response EQUIPMENT Sweep Oscillator RF Plug in Oscilloscope Power Meter Crystal Detector 2 required HP 8470B Option 012 Power Splitter HP 11667A Directional Coupler HP 11691D Option CO 2 Thermistor Mount HP 8478B PROCEDURE 1 Connect equipment as shown in test setup CAUTION Do not apply any DC voltage to the RF OUTPUT connector or damage to the instrument may occur NOTE Crystal Detector output should be between 50 mVdc and 750 mVdc Figure 3 11 External Crystal Detector Leveling 1 of 2 3 17 Operation Model 86290B EXTERNAL CRYSTAL DETECTOR L
31. in damage to or destruction of part or all of the equipment Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met CAUTION 1 12 Operation 1 13 BEFORE APPLYING POWER refer to SAFETY CONSIDERATIONS in Section 1 of the Operating and Service manual for the mainframe The information cautions and warnings in this manual must be followed to ensure safe operation and to keep the instrument safe WARNING BEFORE SWITCHING ON THE IN STRUMENT the protective earth ter minal of the mainframe must be con nected to the protective conductor of the mains power cord The mains plug should only be inserted in a soc ket outlet provided with protective earth contact This protection should not be negated by using an extension cord power cable without a protec tive grounding conductor Grounding one conductor of a two conductor outlet is not sufficient protection WARNING Any interruption of the protective grounding conductor inside or out side the instrument or disconnection of the protective earth terminal could make this instrument dangerous Whenever it is likely that this protec tion has been impaired the instru Model 86290B ment should be made inoperative and secured against any unintended op eration BEFORE SWITCHING THE INSTRU MENT ON ensure that all ac line pow ered devices connected to the in strument are connected to the protec tive earth ground
32. in pro ceed as follows a Push inward on top of latch handle shown in Figure 2 3 and pull forward and up on bot tom of latch handle b When exposed portion of latch handle is in a position perpendicular to RF Plug in front panel it is disengaged from locking pin Fig ure 2 1 and RF Plug in may be removed by pulling forward on latch handle Model 86290B 2 21 STORAGE AND SHIPMENT 2 22 Environment 2 23 The instrument may be stored or shipped in environments within the following limits Temperature EOE 40 C to 75 C Humidity 5 to 95 at 0 to 40 C Alitude 25 5S leeks be Pavel Up to 15240 metres 50000 feet The instrument should also be protected from temperature extremes which cause condensation within the instrument 2 24 Packaging 2 25 Original Packaging Containers and mat erials identical to those used in factory packaging are available through Hewlett Packard offices If RECTANGULAR CUT OUT Figure 2 3 RF Plug In Latch in Release Position 2 4 Model 86290B the instrument is being returned to Hewlett Packard for servicing attach a tag indicating the type of service required return address model number and full serial number Also mark the container FRAGILE to ensure careful handling In any correspondence refer to the instrument by model number and full serial number 2 26 Other Packaging The following general instructio
33. inframe POWER LEVEL control R1 Adjusts RF output 12 0 18 6 GHz Illuminates with Band 3 power Clockwise rotation increases output selected on mainframe power 2 0 18 6 GHz Illuminates with Band 4 selected on mainframe 0 ALC switch 2 Selects INT internal EXT ex Band 4 is the Sequential ternal or MTR power meter power leveling sweep modes Figure 3 2 Front Panel Controls Connectors and Indicators 1 of 4 Sirio iii rire ili Model 86290B Operation FRONT PANEL FEATURES ALC EXT INPUT BNC connector J2 Input for ex ternal leveling from power meter or crystal de tector ALC GAIN control R4 Adjusts ALC leveling amp lifier gain when system is using an external leveling loop Clockwise rotation increases ALC loop gain i ALC SLOPE OFF control R3 Compensates for high frequency power losses in external RF cables by attenuating power at lower frequen cies This compensation provides a flat RF signal output The OFF Position removes all compensation AF OUTPUT PEAK control R2 Optimizes RF out put power for selected frequency range and assures minimum harmonically related signals RF OUTPUT connector J1 Type N 50 ohm RF output connector APC 7 for Option 005 CAUTION Do not apply any DC voltage to the RF OUTPUT connector or damage to the instrument may occur O Drawer Latching Handle Aids in installing and removing RF Plug in After installation
34. is prop erly installed it obtains all power through the rear interface connector from the 8620C Sweep Oscillator mainframe 2 8 Intefconnections 2 9 For the Model 86290B RF Plug in to operate it must be plugged into an 8620C main frame Connection is made by pushing the RF Plug in into the mainframe so that the plug in in terface connector P1 mates with the mainframe connector 2 10 Mating Connectors 2 11 All of the externally mounted connectors on the 86290B are listed in Table 2 1 Opposite each 86290B connector is an industry identifica tion the part number of a mating connector and the part number of an alternate source for the mating connector 2 12 Operating Environment 2 13 Temperature The instument may be operated in temperatures from 0 C to 55 C 2 14 Humidity The instrument may be operated in environments with humidity from 5 to 95 at 0 to 40 C However the instrument should be protected from temperature extremes which cause condensation within the instrument i 2 15 Altitude The instrument may be operated at altitudes up to 4572 metres 15000 feet 2 16 Frequency Scale Installation 2 17 To install frequency scale proceed as follows NOTE If RF Plug in is installed in main frame it must be removed to install frequency scale See RF Plug in removal instructions in Paragraph 2 20 a Disengage mainframe front panel latch han dle shown in Figure 2 1 by pushing do
35. justable AC Line Transformer Frequency Meter Frequency Meter Frequency Meter Adapters 2 required Power Splitter Directional Coupler 1 10 Table 1 4 Recommended Test Equipment 1 of 2 Critical Specifications No substitute mainframe Frequency Range 2 0 GHz to 40 GHz Vertical Amplifier Dual trace with 10 1 probes Bandwidth 20 MHz minimum Vertical Sensitivity 5 mV Div Horizontal Sweep Rate 1 us Div minimum For use with Oscilloscope Range SOV to 50V Accuracy 0 004 Input Impedance 10 megohms minimum Frequency Range 100 MHz to 18 6 GHz Frequency Response 0 1 18 6 GHz Error lt 1 3 dB Impedance 50 ohms Range 2 0 to 18 6 GHz Frequency 10 Hz to 2 MHz Output 6V p p into 50 ohms Scale RMS volts Range 0 to 70 dB Accuracy 5 Frequency Range 10 Hz to 100 kHz Frequency 100 MHz to 18 6 GHz Range 10 dBm to 20 dBm Range 0 to 10 Vdc Current 0 1 Amp Output 100 to 150 Vac Power 150 watts Range 2 0 to 4 2 GHz Range 3 7 to 12 4 GHz Range 12 4 to 18 6 GHz Type N Female to Waveguide Frequency 2 18 6 GHz Attenuation in each arm 6 dB Freq 2 0 18 6 GHz Coupling 20 dB Directivity gt 25 dB SWR all ports lt 1 3 Type N Male Connector at Input port Type N Female Connectors at Output and Auxiliary Ports Model 86290B HP 8620C HP 8555A 8552B 141T HP 11517A HP 182C 1801A 1820C HP 10004A HP 3460B HP 8755B 182T H
36. ns should be used for re packaging with commercially available materials a Wrap instrument in heavy paper or plastic If shipping to Hewlett Packard Office or Ser vice Center attach tag indicating type of ser vice required return address model number and full serial number Installation Use a strong shipping container Use enough shock absorbing material around all sides of instrument to provide firm cushion and prevent movement inside con tainer Protect control panel with cardboard ea Seal shipping container securely Mark shipping container FRAGILE to ensure careful handling In any correspondence refer to instrument by model number and full serial number 2 5 2 6 Operatior SECTION Ill OPERATION 3 1 INTRODUCTION 3 2 This operating section explains the function of the controls and indicators of the Model 86290B RF Plug in It decribes typical operating modes in a measurement system and covers operator replacement of indicator lamps Figure 3 12 shows the positions of the ALC Function switch A1S1 that the operator sets for each application 3 3 PANEL FEATURES 3 4 Front and rear panel features are described in Figures 3 2 and 3 3 Description numbers match the numbers on the illustration 3 5 OPERATOR S CHECKS 3 6 The Operator s Checks Figure 3 4 allow the operator to make quick evaluation of the in strument s main functions prior to use These
37. ortional to the RF signa level The dc voltage is applied to the 86290B ALC circuits and compared with an internal referenc voltage A difference voltage is produced and am plified by the ALC amplifier before being applied as modulator drive to the Coupler Modulator as sembly A10 The modulator drive controls th output of the Soupicu Modulator to maintain constant power level 3 12 External Crystal Detector Leveling 3 13 Power may be leveled externally using power splitter or directional coupler and crysta detector This leveling system uses a power splitte to sample the RF output signal and a crystal detec tor to produce a dc voltage proportional to RI signal level The detector voltage is compared wit an internal reference voltage and the differenc voltage changes the output power level to keep i constant at the output Instead of a power splitter a directional coupler may be used to sample the R signal for the leveling loop Directional coupler are usually narrow band whereas the power split ter is flat over a wide frequency range The ac vantage of a directional coupler is that it does nc have a 6 dB loss like the power splitter therefore 3 Operation higher maximum leveled power output may be ob tained To place the crystal detector leveling loop in operation use the test setup and procedures in Figure 3 11 3 14 Internal AM 3 15 The 8620C Sweep Oscillator mainframe has an internal 1 kHz square wave for in
38. ppropriate display plug in forms a phase meter and a ratio meter for direct phase and amplitude ratio measurement on RF voltages These measurements can be made on single frequencies and on swept Model 86290B frequencies from 2 0 to 18 0 GHz The interfacing between the 8410B and 8620C 86290B sweeper permits the 8410B to phase lock over the 2 0 to 18 0 GHz range Sweep timing pulses for the 8410B Network Analyzer are available at the rear panel SEQ SYNC connector General Information 1 48 RECOMMENDED TEST EQUIPMENT 1 49 Equipment required to maintain the Model 86290B is listed in Table 1 4 Other equipment may be substituted if it meets or exceeds the critical specification listed in the table ta General Information Model 86290B Table 1 1 Specifications for 86290B Installed in 8620C 1 of 2 SPECIFICATIONS 12 0 18 6 GHz 2 0 18 6 GHz FREQUENCY Range Accuracy at 25 C CW Mode or Sweep Time gt 0 1 sec with FM switch in PL or FM All Sweep Modes Marker 6 0 12 4 GHz 20 MHz 30 MHz 30 MHz 20 MHz 30 MHz 30 MHz 20 MHz 30 MHz 30 MHz 80 MHz 80 MHz 80 MHz Stability Temperature Change 0 5 MHz C 1 0 MHz C 10 Line Voltage Change 100 kHz 100 kHz 10 dB Power Change from Specified 200 KHz 400 kHz Maximum Power 3 1 Load SWR all phases 100 kHz
39. rum Push inward on right hand edge of frequency scale to snap it in place in frequency scale drum Installation CAUTION To prevent damage to frequency pointers when bandswitch drum is rotated make certain that frequency scale is firmly in place and flush with band drum edges f Return front panel to upright closed posi tion and while pushing inward lightly on top of front panel re engage front panel latch handle by pushing it upward to lock position as shown in Figure 2 1 exploded view 2 18 RF Plug in Installation and Removal 2 19 Installation To install RF Plug in pro ceed as follows a If mainframe power is ON press mainframe LINE switch to OFF position b Position latch handle located on left side of RF Plug in so it is perpendicular to front panel Portion of handle with rectangular cut out should be facing forward and portion with notch should be facing rear of RF Plug in as shown in Figure 2 3 BAND INDICATOR NOTCH FREQUENCY SCALE DRUM DEPRESSION Figure 2 2 Mainframe Front Panel in Open Position 2 3 Installation c Slide RF Plug in into mainframe towards rear of compartment RF Plug in latch handle will engage a locking pin shown in Figure 2 1 inside mainframe and exposed portion of latch handle will start to move downward d Push latch handle downward while still pushing inward on RF Plug in until latch handle is flush with front panel 2 20 Removal To remove RF Plug
40. ternal amplitude modulation of the RF signal This pro vides an ON OFF ratio of lt 25 dB for all bands of the 86290B 3 16 External AM 3 17 The 86290B RF Output CW signal can be amplitude modulated from 0 to 100 using an ex ternal modulating signal applied to the mainframe EXT AM connector This provides an ON OFF ratio of gt 30 dB for all bands of the 86290B A positive 5 volts input reduces the RF power output to at least 30 dB below specified maximum power 3 18 External FM 3 19 The 86290B RF Output signal can be fre quency modulated using an external modulating signal applied to the 86290B FM Input connector The external FM function provides a means of obtaining an output frequency that varies under the control of an external modulation signal A positive going voltage causes output frequency to decrease while a negative going voltage causes output frequency to increase 3 20 Frequency Reference 3 21 A sweep signal output is available at the rear panel FREQ REF connector J5 for phase locking external equipment The sweep signal is approximately 1V GHz 3 22 Phase Lock Operation 3 23 The 86290B RF Output CW signal may be phase locked using an external phase lock signal applied to the 86290B FM Input connector The phase lock function provides a means of obtaining a very stable CW frequency by transferring the frequency stability of the reference oscillator to the source If the CW frequency starts to dr
41. tinent Ser vice Notes l 1 6 SPECIFICATIONS 1 7 Instrument specificaions are listed in Table 1 1 These specifications are the performance stan dards or limits against whch the instrument is tested Table 1 2 lists supplemental characteristics Supplemental characteristics are not specifications but are typical characteristics included as addi tional information for the user 1 8 SAFETY CONSIDERATIONS 1 9 General se 1 10 Before operating this instrument you should familiarize yourself with the safety mark ings on the instrument and safety instructions in this manual This instrument has been manufac tured and tested according to international safety standards 1 11 Safety Symbols A Instruction manual symbol the apparatus will be marked with this symbol when it is necessary for the user to refer to the in struction manual in order to protect the ap paratus against damage Indicates dangerous voltages Earth Terminal IK N 1 1 General Information The WARNING sign denotes a hazard It calls attention to a pro cedure practice or the like which if not correctly performed or ad hered to could result in injury or loss of life Do not proceed beyond a WARNING sign until the indica ted conditions are fully understood and met The CAUTION sign denotes a haz ard It calls attention to an operat ing procedure practice or the like which if not correctly performed or adhered to could result
42. wnward on handle while pushing inward lightly on top of front panel 2 1 Installation Model 86290B Table 2 1 Model 86290B Mating Connectors Connector Name Industry Identification Ji RF OUTPUT 1250 0882 Specialty Connector 25P117 2 1250 0256 Specialty Connector 28 P118 1 J2 ALC EXT INPUT 1250 0256 Specialty Connector 28 P118 1 J3 SEQ SYNC 1250 0256 Specialty Connector 28 P118 1 J4 FM 1250 0256 Specialty Connector 28 P118 1 J5 FREQ REF 1250 0882 Specialty Connector 25P117 2 J6 AUX OUT EXPLODED VIEW OF MAINFRAME FRONT PANEL LATCH HANDLE SHOWN IN LOCKED POSITION FRONT PANEL LATCH HANDLE SHOWN IN DISENGAGED POSITION FREQUENCY SCALE DRUM RF PLUG IN LOCKING PIN Figure 2 1 Location of Mainframe Parts Pertinent to Frequency Scale and RF Plug in Installation 2 2 Model 86290B Swing front panel forward and down to posi tion shown in Figure 2 2 Depress mainframe front panel BAND select lever shown in Figure 2 1 to rotate fre quency scale drum until desired scale posi tion is accessible NOTE If necessary to remove a frequency scale exert a pressure OUTWARD away from drum on right hand edge of scale Insert frequency scale so key a 1 16 inch long 1 2 inch wide protrusion on left end of scale fits into notch shown in Figure 2 2 in roller on left hand edge of d
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