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When

Proceed

is pressed, the date parameter

opens for data entry.

Using the key pad, enter the current date (in any
desired format). Then, press any teminator key. The
Calibration Status Menu display changes to indicate
calibration is in progress.

When the reference calibration is complete, the Cali-
bration Menu is displayed.

External Reference Not Connected
If calibration is attempted without an external
10 MHz reference signal connected to the rear panel

10 MHz REF IN

connector, the Calibration Status

Menu displays the following.

681XXC OM

3-93/3-94

LOCAL (FRONT

REFERENCE

PANEL) OPERATION

OSCILLATOR CALIBRATION

Summary of Contents for 680XXC

Page 1: ...SERIES 681XXC SYNTHESIZED SIGNAL GENERATOR OPERATION MANUAL P N 10370 10333 REVISION B PRINTED APRIL 2001 COPYRIGHT 1999 ANRITSU CO 490 JARVIS DRIVE MORGAN HILL CA 95037 2809...

Page 2: ...ation or misuse or operation outside of the environmental specifi cations of the product No other warranty is expressed or implied and the remedies provided herein are the Buyer s sole and exclusive r...

Page 3: ......

Page 4: ...formed properly Do not proceed beyond a WARNING notice until the indicated condi tions are fully understood and met CAUTION CAUTION indicates a hazard It calls attention to a procedure which if not pe...

Page 5: ...receiving a severe or fatal electric shock WARNING For Safety Before changing the fuse always remove the power cord from the power outlet There is the risk of receiving a fatal electric shock if the f...

Page 6: ...IPMENT 1 8 Chapter 2 Installation 2 1 INTRODUCTION 2 3 2 2 INITIAL INSPECTION 2 3 2 3 PREPARATION FOR USE 2 4 Power Requirements 2 4 Line Voltage Selection 2 4 Power Connection 2 4 Standby Operation 2...

Page 7: ...ion 3 14 Self Testing the 681XXC 3 15 Resetting to Default Parameters 3 15 3 10 POWER LEVEL SWEEP OPERATION 3 53 Selecting CW Power Sweep Mode 3 53 Setting CW Power Sweep Step Size and Dwell Time3 54...

Page 8: ...tups 3 89 Recalling Setups 3 89 Erasing Stored Setups 3 90 3 15 SECURE OPERATION 3 91 3 16 REFERENCE OSCILLATOR CALIBRATION 3 92 Chapter 4 Local Operation Menu Maps 4 1 INTRODUCTION 4 3 4 2 MENU MAP D...

Page 9: ...N 7 3 7 2 MASTER SLAVE OPERATION 7 4 Connecting the Instruments 7 4 Initiating Master Slave Operation 7 5 Master Slave Operation 7 7 Master Slave Operation in VNA Mode 7 7 Terminating Master Slave Ope...

Page 10: ...Appendix A Rear Panel Connectors A 1 INTRODUCTION A 1 A 2 REAR PANEL CONNECTORS A 1 A 3 CONNECTOR PINOUT DIAGRAMS A 1 Appendix B Performance Specifications 681XXC OM v vi Table of Contents Continued...

Page 11: ...Table of Contents Continued...

Page 12: ...1 3 1 4 IDENTIFICATION NUMBER 1 5 1 5 ELECTRONIC MANUAL 1 5 1 6 RELATED MANUALS 1 5 GPIB Programming Manual 1 5 SCPI Programming Manual 1 5 Maintenance Manual 1 6 1 7 OPTIONS 1 6 1 8 PERFORMANCE SPECI...

Page 13: ...Figure 1 1 Series 681XXC Synthesized Signal Generator...

Page 14: ...manuals op tions and performance specifications A listing of recommended test equipment is also provided 1 3 DESCRIPTION The Series 681XXC Synthesized Signal Generators are microproces sor based synt...

Page 15: ...Available 68197C 0 01 2 0 GHz 2 0 20 0 GHz 20 0 40 0 GHz 40 0 50 0 GHz 50 0 65 0 GHz 11 0 dBm 10 0 dBm 2 5 dBm 0 0 dBm 2 0 dBm Not Available Not Available With Option 15A High Power Installed 68117C 0...

Page 16: ...s one of a four manual set that consists of an Operation Manual a GPIB Programming Manual a SCPI Programming Manual and a Maintenance Manual GPIB Pro gramming Manual This manual provides information f...

Page 17: ...ont panel or via GPIB Rated RF output power is reduced Option 2C 90 dB Step Attenuator Adds a 10 dB per step attenuator with a 90 dB range for models having a high end fre quency of 50 GHz Output powe...

Page 18: ...ront panel display or keyboard control are not needed Option 18 mmWave Module Bias Output Provides bias output for 54000 xWRxx Millimeter Wave Source Modules BNC Twinax connector rear panel Option 19...

Page 19: ...er External Time Base Input EIP Microwave Inc Models 538B 548B or 578B with Cable Kit Option 590 and External Mixer Option 91 26 5 to 40 GHz Option 92 40 to 60 GHz Option 93 60 to 90 GHz Power Meter w...

Page 20: ...ent 2 6 2 4 GPIB SETUP AND INTERCONNECTION 2 7 Interface Connector 2 7 Cable Length Restrictions 2 7 GPIB Interconnection 2 7 Setting the GPIB Address 2 7 Selecting the Line Terminator 2 9 Selecting t...

Page 21: ......

Page 22: ...ment have been checked against the packing list and the signal gen erator has been checked for mechanical and electrical operation If the shipment is incomplete or if the signal generator is damaged m...

Page 23: ...etting is in correct for the line voltage available change it to the correct setting Whenever the selector setting is changed the line fuse must be changed to the correct value for the line voltage se...

Page 24: ...ng temperature On the front panel press LINE to switch the 681XXC from OPERATE green LED on to STANDBY orange LED on NOTE During standby operation the fan runs continuously 681XXC OM 2 5 PREPARATION I...

Page 25: ...e following environmental limits q Temperature 0 C to 50 C q Humidity 5 to 95 relative at 40 C q Altitude up to 4600 meters q Cooling Internal cooling is provided by forced airflow from the fan mounte...

Page 26: ...able length between all instruments is too long the data and control lines cannot be driven properly and the system may fail to perform Cable length restric tions are as follows q No more than 15 inst...

Page 27: ...layed Press the menu soft key GPIB Address to change the current GPIB address of the signal generator Enter a new address using the cursor control key or the data entry keypad and the terminator key H...

Page 28: ...ators can be remotely operated via the GPIB using one of two external interface languages Native or SCPI Op tion 19 The Native interface language uses a set of 681XXC GPIB Product Specific commands to...

Page 29: ...hardware as follows Step 1 Using a Phillips screwdriver remove the screws and the front handle assemblies from the instrument For instruments not having front handles remove the screws and the front t...

Page 30: ...into the metric tapped holes in the side of the instrument Step 8 Insert the two SAE threaded screws re moved from the feet through the 90 tabs on the rear of the slide assembly and into the rear pane...

Page 31: ...gh the 90 tabs on the rear of the slide assembly and into the rear panel of the instrument Step 14 Using the Phillips screwdriver tighten all screws holding the right side slide assem bly to the instr...

Page 32: ...e two options is possible instructions for packaging and shipment are given below Use a Suitable Container Obtain a corrugated cardboard carton with a 125 kg test strength This carton should have insi...

Page 33: ...Africa Telephone 011 27 11 787 7200 FAX 011 27 11 787 0446 AUSTRALIA ANRITSU PTY LTD Unit 3 170 Foster Road Mt Waverley VIC 3149 Australia Telephone 03 9558 8177 FAX 03 9558 8255 ISRAEL TECH CENT LTD...

Page 34: ...A 3 8 Menu Display Format 3 9 Menu Keys 3 10 3 4 DATA ENTRY AREA 3 12 3 5 INSTRUMENT START UP 3 14 Powering Up the 681XXC 3 14 Start Up Display 3 14 Standby Operation 3 14 Self Testing the 681XXC 3 15...

Page 35: ...g a Power Level 3 35 Frequency Markers 3 36 Selecting Alternate Sweep Mode 3 38 List Sweep Mode 3 41 Selecting List Sweep Mode 3 42 Editing the List 3 43 Selecting a List Sweep Range 3 46 Selecting a...

Page 36: ...g Frequency Modulation 3 75 Square Wave Modulation Operating Modes 3 77 Providing Square Wave Modulation 3 77 3 13 SYSTEM CONFIGURATION 3 80 Configuring the Front Panel 3 81 Configuring the Rear Panel...

Page 37: ......

Page 38: ...panel data display area and data entry area that identify and describe all front panel controls inputs and outputs q An annotated diagram of the menu display format showing where the current frequency...

Page 39: ...quency and power level parameters and the modulation status Menu Keys Menu keys provide for selecting the operating mode parameters and configuration of the signal genera tor 3 6 681XXC OM L i n e R F...

Page 40: ...s The front panel has both input and output connec tors Modulation Connectors The modulation connectors provide for applying ex ternal AM FM or Square Wave modulation to the RF output signal External...

Page 41: ...f the menu display and identifies the display elements It also shows the placement of the menu keys in re lation to the display The paragraphs that follow provide descriptions of the menu display elem...

Page 42: ...ars Each type of signal modulation AM FM Square Wave has a separate title bar on the display Parameter Areas The parameter areas show the frequency power level and modulation information for the curre...

Page 43: ...ting mode operating pa rameters and configuration of the instrument A brief functional description of each main menu fol lows q CW SWEEP SELECT This menu lets you select between CW Analog Step Manual...

Page 44: ...ayed contains a cursor positioned adjacent to the pressed key Figure 3 2 The cursor is displayed on all sub menus of the current menu until a differ ent main menu key is pressed When the SYSTEM key is...

Page 45: ...ase or de crease the value of the parameter The unit size of the increase or decrease that occurs each time the or pad is pressed is determined by the cursor posi tion In addition when editing frequen...

Page 46: ...numeric keypad provides for entering fre quency power level time and number of steps pa rameters and GPIB address values The key functions as a change sign key during any keypad entry CLEAR ENTRY Key...

Page 47: ...enerator and the revi sion level of the installed firmware The 681XXC then returns to the exact configuration it was in when last turned off Standby Operation Whenever the signal generator is not bein...

Page 48: ...etting to Default Parameters You can reset the 681XXC to the factory selected default parameter values at any time during normal operation The default parameters are shown in Table 3 1 on the followin...

Page 49: ...8177C 3 5 2 0 50 0 2 0 5 0 8 0 11 0 14 0 17 0 20 0 3 5 2 0 50 0 2 0 5 0 8 0 11 0 14 0 17 0 20 0 1 0 68187C 3 5 2 0 60 0 2 0 5 0 8 0 11 0 14 0 17 0 20 0 3 5 2 0 60 0 2 0 5 0 8 0 11 0 14 0 17 0 20 0 1 0...

Page 50: ...P SWEEP LEVEL SWEEP LEVEL OFFSET DWELL TIME NUMBER OF STEPS DWELL TIME NUMBER OF STEPS 68117C 50 ms 1 ms 50 50 ms 50 0 0 dB 68137C 50 ms 1 ms 50 50 ms 50 0 0 dB 68147C 50 ms 1 ms 50 50 ms 50 0 0 dB 68...

Page 51: ...l parameters If you wish to follow along on your 681XXC you can obtain this same menu display by resetting your instrument press SYSTEM then press Reset Opening the Parameter In order for the value of...

Page 52: ...lockwise to increase or de crease the value of the parameter by the unit size Turning the knob rapidly changes the value of the parameter in larger steps Using a Set Increment When editing frequency p...

Page 53: ...displayed on the data display in GHz A time entry may be terminated in Sec ms ms or ns however it is always displayed on the data display in Sec If you make an error during data entry either 1 press B...

Page 54: ...the resulting menu display press CW The CW Menu below is displayed This menu lets you perform the following q Select a CW frequency for output q Copy the current frequency and power infor mation to th...

Page 55: ...to open the frequency parameter then enter the new CW frequency using the keypad and appropriate terminator key To close the open frequency parameter press Edit F1 or make an other menu selection Sel...

Page 56: ...ill untag it remove the F Tagging selected frequencies lets you quickly switch between them using the scan keys of the Tagged Frequencies menu Press Edit to edit the selected frequency or enter a new...

Page 57: ...ower level parameter then edit the current power level using the cursor control key or rotary data knob To close the open power level parameter press Edit L1 or make an other menu selection Entering a...

Page 58: ...opens for editing Edit the current sweep time using the cursor control key or rotary data knob or enter a new sweep time using the key pad and appropriate termination key The sweep time entered must...

Page 59: ...y mode the signal genera tor s output frequency is swept between selected start and stop frequencies Sweep width can be set from 1 MHz to the full frequency range of the signal generator Sweep time ca...

Page 60: ...go to the trigger menu To open the sweep time parameter for editing press Sweep Time Edit the current sweep time using the cursor control key or the rotary data knob or enter a new sweep time using th...

Page 61: ...en the trigger key is pressed If a sweep is in progress when the key is pressed it aborts and resets To go to the Sweep Trigger Menu below from the Analog Sweep Ramp menu press Trigger Menu To select...

Page 62: ...n step sweep frequency mode press the main menu key CW SWEEP SELECT At the resulting menu display press Step The Step Sweep Menu below is then displayed This menu lets you perform the following q Sele...

Page 63: ...his case the resultant minimum dwell time must be 10 ms to allow for phase locking of each step fre quency The sweep time of the step sweep can be set for any time in the range of 20 ms to 99 sec To g...

Page 64: ...step sweep and go to the trigger menu To open the sweep time parameter for editing press Sweep Time Edit the current sweep time using the cursor control key or the rotary data knob or enter a new swe...

Page 65: ...The step size range is 1 kHz 0 1 Hz with Option 11 to the full frequency range of the instrument the number of steps range is 1 to 10 000 Selecting Manual Sweep Mode To place the 681XXC in manual swe...

Page 66: ...ens the stop frequency parameter Edit the open frequency parameter using the cursor control key or the rotary data knob When you are finished close the open parameter by pressing its menu edit soft ke...

Page 67: ...uency parameter q F6 dF provides a symmetrical frequency sweep about the center frequency F6 The sweep width is determined by the dF frequency parameter To select one of the preset sweep ranges from a...

Page 68: ...or enter a new output power level for the frequency sweep Editing the Current Power Level Press Edit L1 to open the power level parameter then edit the current power level using the cursor control key...

Page 69: ...duces an intensified dot on a CRT display at each marker fre quency They are obtained from a momentary dwell during the sweep at each marker fre quency Intensity markers are only available in the anal...

Page 70: ...tagged pressing Tag will untag it re move the m Activating Markers The soft keys Video Markers and Intensity Markers toggle the markers on and off Video Markers To output the tagged marker fre quencie...

Page 71: ...Menu display below To go to the Alternate Sweep Menu below from the Step Sweep menu press Alt Swp Menu This menu lets you perform the following q Turn the alternate sweep mode on off q Go to the alte...

Page 72: ...to return to the Alternate Sweep Menu display Selecting an Alternate Sweep Range To go to the Alternate Range Menu below from the Alternate Sweep menu press Alt Range Select the alternate sweep range...

Page 73: ...change the level use the menu edit soft key to open the parameter then edit it A menu edit soft key is also provided to let you change the power level of the main sweep When you are done selecting the...

Page 74: ...key In man ual trigger mode the list index can also be incre mented by using an external trigger input Each TTL trigger increments the list index by one After a reset the list sweep defaults to manua...

Page 75: ...trol key or rotary data knob or enter a new value using the key pad and any terminator key When you have finished setting the open pa rameter close it by pressing List Index or by mak ing another menu...

Page 76: ...ile RAM and are lost at instrument power off Press PreCalc List to perform list calculations The soft key image depresses to show that calculations are in progress When the calculations are com pleted...

Page 77: ...er a new frequency Press Page Up to scroll the displayed frequencies to the next 20 in the list Press Page Down to scroll the displayed frequencies to the previous 20 in the list Press Previous Menu t...

Page 78: ...ntries from the list Press Insert Entry to insert the default frequency 5 GHz and power level 0 dBm at the current list index NOTE Because the list size is fixed inserting a new index will cause the l...

Page 79: ...and power level to the values you wish to enter into the current list index Press the Copy to List soft key to copy the data to the current list index Once the frequency and power level information ha...

Page 80: ...weep Trigger There are four modes of sweep triggering in list sweep frequency mode each selectable from the trigger menu The following is a description of each mode q Auto Automatic The output sweeps...

Page 81: ...a single sweep If a single sweep is in progress pressing Trig causes the sweep to abort and reset NOTE With Auto trigger selected and the dwell time per step set to a small value display updating slo...

Page 82: ...l fre quency menu press the main menu key LEVEL ALC SELECT At the resulting menu display press Level The Level Menu below is displayed This menu lets you perform the following q Edit the power level p...

Page 83: ...Go to the Tagged Levels menu Press Log Linear to select power level units When Log is selected units are in dBm when Linear is se lected units are in mV The soft key label is high lighted in reverse...

Page 84: ...ss Output Level to output the selected level This power level is output until you select another level from the list and press Output Level On the level list the output power level selection is marked...

Page 85: ...ue and apply it to the displayed power level go to the Level Menu Then press Edit Offset As shown in the following menu this opens the offset parameter for editing Edit the current offset value using...

Page 86: ...evels at a single CW fre quency Available menus let you set or select the sweep range the step size the dwell time per step and the type of power sweep linear or logarithmic and sweep trigger To place...

Page 87: ...menu Press Dwell Time to open the dwell time per step parameter Press Step Size to open the step size parameter Press Num of Steps to open the number of steps parameter Open the parameter you wish to...

Page 88: ...the trigger key is pressed If a sweep is in prog ress when the key is pressed it aborts and re sets To go to the CW Level Sweep Trigger Menu below from the CW Level Sweep Ramp menu press Trigger Menu...

Page 89: ...pa rameter in the display above Edit L1 opens the start power level parameter Edit L2 opens the stop power level parameter Edit the open power level parameter using the cur sor control key or the rot...

Page 90: ...evel Sweep Control menu select the power level sweep range L1 L2 L3 L4 L5 L6 L7 L8 or L9 L0 that you wish to set The menu then displays the current power level parameters for the selected power level...

Page 91: ...start with an analog sweep menu display to select a step sweep frequency step power mode start with a step sweep menu display Then press the main menu key LEVEL ALC SELECT At the resulting menu displ...

Page 92: ...rameter Press Num of Steps to open the number of steps pa rameter Open the parameter you wish to change then edit the current value using the cursor control key or ro tary data knob or enter a new val...

Page 93: ...ations with fre quency in a test setup The following paragraphs provide descriptions and operating instruc tions for the power leveling modes and functions Use the Leveling Modes menu map Chapter 4 Fi...

Page 94: ...menu To go to the Leveling Menu from the ALC Mode menu press Leveling Menu The Leveling Menu below is displayed To select internal ALC press Internal Pressing one of the other leveling menu soft keys...

Page 95: ...t the external ALC input from an external detector press External Detector To select the external ALC input from a power me ter press Power Meter After you have made the external ALC input con nection...

Page 96: ...nstalled are used to control the relative power level Power is not detected at any point and the absolute power level is uncalibrated Fixed gain mode is selected from the leveling menu Press Leveling...

Page 97: ...ow is displayed This menu lets you decouple the step attenuator from the ALC set the power level and set the at tenuation in 10 dB steps Press Decouple to decouple the step attenuator from the ALC Pre...

Page 98: ...both the power slope and the pivot point The ALC loop menu lets you activate the ALC power slope function To go to the ALC Loop Menu from the Level ALC Control Menu display press ALC Loop The ALC Loo...

Page 99: ...r editing Edit the current slope value using the cur sor control key or rotary data knob or enter a new value using the key pad and the STEPS termination key When you have finished setting the open pa...

Page 100: ...fset table with the signal generator s nor mal power level DAC word at each frequency point Up to five user level flatness correction power offset tables from 2 to 801 frequency points table can be cr...

Page 101: ...int in the test setup where the corrected power level is desired Power Meter Model and GPIB Address In order for the 681XXC to control the power meter the GPIB address and power meter model must be se...

Page 102: ...the Anritsu ML2437A ML2438A and ML4803A and Hewlett Packard 437B 438A and 70100A Press Previous Menu to return to the main Config ure GPIB Menu display At the Configure GPIB menu press Previous Menu...

Page 103: ...er 5 that you wish to create Next set the measurement frequency range by pressing Edit Start or Edit Stop to open the start Flo or stop Fhi frequency parameter for editing Edit the current frequency u...

Page 104: ...le the set power level is delivered at the point where the calibration was performed To activate the selected power offset table and apply user level flatness correction to the test setup press On Off...

Page 105: ...NE OPERATE STANDBY key to turn the instrument on Step 3 When the first menu is displayed after the start up display release the RF OUT PUT ON OFF key The contents of non volatile memory have now been...

Page 106: ...nsitivity is continuously vari able from 0 dB V to 25 dB V The amplitude of the RF output changes exponentially as the AM input changes Providing Amplitude Modulation To provide amplitude modulation f...

Page 107: ...e front panel or rear panel AM IN connector The AM status display will reflect your selection Frequency Modulation Operating Modes The signal generator has two FM operation modes Locked FM and Unlocke...

Page 108: ...ss the menu soft key FM Modes The third External FM Status Menu below is displayed This menu lets you select the FM operating mode Press Locked LN to select the Locked Low Noise FM operating mode Pres...

Page 109: ...he cur sor control key or rotary data knob or enter a new value using the keypad and the appropriate termi nator key The FM Sensitivity range is 10 kHz V to 20 MHz V for Locked and Unlocked Narrow FM...

Page 110: ...g are the menu selections necessary to provide square wave pulse modulation of the out put signal using a modulating signal from both the internal and external sources Press MODULATION At the resultin...

Page 111: ...ch input connector is selected Press L RF On H RF On to select the polarity of the signal that triggers the RF on Press More to go to the additional menu Internal Source Frequency Selection If you hav...

Page 112: ...ce then when you press More the menu below is displayed Press Front Rear to select the front or rear panel IN connector The Square Wave status display shows your selection as Source Press Previous Men...

Page 113: ...eters external interface language and increment sizes for frequency power level and time parameters Use the System Configuration menu map Chapter 4 Figure 4 14 to follow the menu sequences To go to th...

Page 114: ...u from the System Configuration menu press Front Panel The Configure Front Panel Menu below is dis played Press Brite repeatedly to increase the intensity of the data display to the desired level Pres...

Page 115: ...ailable at the rear panel AUX I O connector The display will reflect your selection Press Penlift to select normally open N O or nor mally closed N C contacts on the internal penlift relay The penlift...

Page 116: ...o to the Configure RF Menu below from the System Configuration menu press RF Press Retrace RF to select RF On or Off during retrace The display will reflect your selection Press Delta F RF to select R...

Page 117: ...tary data knob or enter a new value using the data entry key pad and any ter minator key To close the open multiplier parameter press Freq Scaling or make another menu selection Press Term RF Off to s...

Page 118: ...Packard Model 8757D Scalar Network Ana lyzer To go to the Configure GPIB menu from the System Configuration menu press GPIB The Configure GPIB Menu below is displayed Press GPIB Address to change the...

Page 119: ...wer offset table Refer to page 3 67 for a description of the function q Select the external interface language for re mote operation of 681XXCs with Option 19 Refer to page 2 9 for more information Pr...

Page 120: ...igure GPIB Menu When you press More the Second Additional Con figure GPIB Menu below is displayed This menu lets you select scalar mode of operation with a Hewlett Packard Model 8757D Scalar Net work...

Page 121: ...layed Press Freq Incr to open the frequency increment parameter Press Level Incr to open the power level increment parameter Press Time Incr to open the time increment parameter Open the parameter you...

Page 122: ...mber between 0 and 9 on the keypad The setup is now saved NOTE Setup 0 automatically saves the current front panel settings when the instrument is shutdown using the front panel LINE key Therefore it...

Page 123: ...t on Step 3 When the first menu is displayed after the start up display release the RF OUTPUT ON OFF key The contents of non volatile memory have now been erased and reprogrammed with default data 3 9...

Page 124: ...secure mode and how to return to normal op eration To place the 681XXC in the secure mode first press SYSTEM to display the System Menu Next press Secure This places the signal genera tor in the secu...

Page 125: ...he 681XXC rear panel 10 MHz REF IN con nector Next press the SYSTEM main menu key At the System Menu display press Cal Menu to go to the Calibration Menu below Press Refrnce Cal to begin calibration P...

Page 126: ...indicate calibration is in progress When the reference calibration is complete the Cali bration Menu is displayed External Reference Not Connected If calibration is attempted without an external 10 MH...

Page 127: ...Table of Contents 4 1 INTRODUCTION 4 3 4 2 MENU MAP DESCRIPTION 4 3 Chapter 4 Local Operation Menu Maps...

Page 128: ......

Page 129: ...ys is provided If a menu soft key selects another menu then it is shown linked to that menu Figure 4 1 on page 4 5 is a sample menu map annotated to identify the key elements The following is a list o...

Page 130: ......

Page 131: ...LOCAL OPERATION SAMPLE MENU MAPS MENU MAP Figure 4 1 Sample Menu Map Annotated 681XXC OM 4 5...

Page 132: ...S FREQUENCY MODE 4 6 681XXC OM Figure 4 2 CW Frequency Mode Menu Map NOTES Refer to Chapter 7 paragraph 7 2 for Master Slave operating in structions Refer to Chapter 3 paragraph 3 7 for CW Frequency M...

Page 133: ...L OPERATION ANALOG SWEEP MENU MAPS FREQUENCY MODE 681XXC OM 4 7 Figure 4 3 Analog Sweep Frequency Mode Menu Map NOTE Refer to Chapter 3 paragraph 3 8 for Analog Sweep Frequency Mode operating instruct...

Page 134: ...OCAL OPERATION STEP SWEEP MENU MAPS FREQUENCY MODE 4 8 681XXC OM Figure 4 4 Step Sweep Frequency Mode Menu Map NOTE Refer to Chapter 3 paragraph 3 8 for Step Sweep Frequency Mode operating instruction...

Page 135: ...L OPERATION MANUAL SWEEP MENU MAPS FREQUENCY MODE 681XXC OM 4 9 Figure 4 5 Manual Sweep Frequency Mode Menu Map NOTE Refer to Chapter 3 paragraph 3 8 for Manual Sweep Frequency Mode operating instruct...

Page 136: ...10 681XXC OM LOCAL OPERATION LIST SWEEP MENU MAPS FREQUENCY MODE Figure 4 6 List Sweep Frequency Mode Menu Map NOTE Refer to Chapter 3 paragraph 3 8 for List Sweep Frequency Mode operating instruction...

Page 137: ...LOCAL OPERATION FIXED POWER MENU MAPS LEVEL MODE Figure 4 7 Fixed Power Level Mode Menu Map NOTE Refer to Chapter 3 paragraph 3 9 for Fixed Power Level Mode operating in structions 681XXC OM 4 11...

Page 138: ...LOCAL OPERATION CW POWER MENU MAPS SWEEP MODE Figure 4 8 CW Power Sweep Mode Menu Map NOTE Refer to Chapter 3 paragraph 3 10 for CW Power Sweep Mode operating instructions 4 12 681XXC OM...

Page 139: ...TION SWEEP FREQUENCY MENU MAPS STEP POWER MODE Figure 4 9 Sweep Frequency Step Power Mode Menu Map NOTE Refer to Chapter 3 paragraph 3 10 for Sweep Frequency Step Power Mode operating instructions 681...

Page 140: ...Press To Decrease Attenuation 10dB Steps ALC Slope On Off Edit The ALC Slope Edit The Pivot Point Selects Front Panel External ALC Input Selects Rear Panel External ALC Input Adjust the External ALC S...

Page 141: ...ut Impedance Log AM 0 25dB V or Linear AM 0 100 V Edit AM Sensitivity Front Panel Input or Rear Panel Input SYSTEM CW SWEEP SELECT FREQUENCY CONTROL LEVEL ALC SELECT LEVEL CONTROL MODULATION Display S...

Page 142: ...nsitivity Front Panel Input or Rear Panel Input SYSTEM CW SWEEP SELECT FREQUENCY CONTROL LEVEL ALC SELECT LEVEL CONTROL MODULATION Display Showing FM Selected On Select Locked FM Mode Selects Unlocked...

Page 143: ...LOW Level Triggers RF or HIGH Level Triggers RF Select Frequency Square Wave Modulation On Off Internal Square Wave Source or External Square Wave Source LOW Level Triggers RF or HIGH Level Triggers...

Page 144: ...p R a m p 1 0 F o r T o p o f S w e e p R a m p S e l e c t R F O n o r O f f D u r i n g F r e q u e n c y S w i t c h i n g I n C W S t e p a n d L i s t M o d e s S e l e c t 5 V o r 5 V L e v e l...

Page 145: ...ower Up 5 4 Self Test 5 4 Resetting the 681XXC 5 4 Warmup Time 5 4 5 5 CW FREQUENCY ACCURACY TEST 5 5 Test Setup 5 5 Test Procedure 5 6 5 6 POWER LEVEL ACCURACY AND FLATNESS TESTS 5 13 Test Setup 5 13...

Page 146: ......

Page 147: ...n testing of your 681XXC These tables are included as part of the operational verification test procedures and contain test information for all 681XXC models 681XXC OM 5 3 Instrument Critical Specific...

Page 148: ...ion of the instrument PCBs and other internal assemblies To self test the signal generator press SYSTEM then press Selftest When the self test is complete the instrument displays the main CW menu NOTE...

Page 149: ...Connect the 681XXC RF OUTPUT to the Frequency Counter RF Input as follows a For measuring frequencies of 0 01 to 1 0 GHz connect to the Band 2 input Connection A b For measuring frequencies of 1 0 to...

Page 150: ...unter read ing meets specifications 100 Hz of the value shown on the test record for stan dard models 10 Hz for instruments with Option 11 Step 3 Record the Frequency Counter reading on the test recor...

Page 151: ...____________ 2 000 002 000 _____________________ 2 000 003 000 _____________________ 2 000 003 000 _____________________ 2 000 004 000 _____________________ 2 000 004 000 _____________________ 2 000 0...

Page 152: ...0 000 000 _____________________ 46 000 000 000 _____________________ 38 000 000 000 _____________________ 50 000 000 000 _____________________ 40 000 000 000 _____________________ 2 000 001 000 ______...

Page 153: ...50 000 000 000 _____________________ 50 000 000 000 _____________________ 54 000 000 000 _____________________ 54 000 000 000 _____________________ 58 000 000 000 _____________________ 58 000 000 000...

Page 154: ..._______________ 2 000 000 100 0 _____________________ 2 000 000 200 0 _____________________ 2 000 000 200 0 _____________________ 2 000 000 300 0 _____________________ 2 000 000 300 0 ________________...

Page 155: ...0 000 000 0 _____________________ 42 000 000 000 0 _____________________ 35 000 000 000 0 _____________________ 46 000 000 000 0 _____________________ 38 000 000 000 0 _____________________ 50 000 000...

Page 156: ...00 000 000 0 _____________________ 50 000 000 000 0 _____________________ 50 000 000 000 0 _____________________ 54 000 000 000 0 _____________________ 54 000 000 000 0 _____________________ 58 000 00...

Page 157: ...use the MA2474A power sensor for 40 GHz models use the MA2475A power sensor Step 2 Connect the Power Sensor to the RF OUT PUT of the 681XXC Step 3 Connect the 681XXC rear panel HORIZ OUT to the Oscil...

Page 158: ...easure the output power level with the Power Meter and record the reading on the test record Step 3 Verify that the Power Meter reading meets the specifications stated on the test record Step 4 Set L1...

Page 159: ...eset The CW Menu is displayed b Press Step to place the 681XXC in the step sweep frequency mode and display the Step Sweep Menu below c With the Step Sweep menu displayed press the main menu key FREQU...

Page 160: ...ond NOTE Monitor the 681XXC s Horizontal Output on the Oscilloscope to de termine sweep start and stop Step 2 As the 681XXC steps through the full fre quency range measure the maximum and minimum Powe...

Page 161: ...ith the Analog Sweep menu dis played press the main menu key FREQUENCY CONTROL The Sweep Frequency Control Menu below is displayed d Press Full to select a full range fre quency sweep e Press Edit L1...

Page 162: ...81XXC s Horizontal Output on the Oscilloscope to de termine sweep start and stop Step 4 During the analog sweep measure the maximum and minimum Power Meter readings and record the values on the test r...

Page 163: ...dBm 3 dBm 2 dBm 1 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specifica...

Page 164: ...1 dBm 0 dBm 1 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specificatio...

Page 165: ...1 dBm 2 dBm 3 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification...

Page 166: ...11 dBm 10 dBm 9 dBm 8 dBm 6 dBm 5 dBm 4 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm...

Page 167: ...dBm 8 dBm 7 dBm 6 dBm 5 dBm 4 dBm 3 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm ___...

Page 168: ...Bm 4 dBm 3 dBm 2 dBm 1 dBm 0 dBm 1 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _____...

Page 169: ...____dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness Step Sweep Set Power Max Power Min Power Va...

Page 170: ...dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness Step Sweep Set Power Max Power Min Power Variation 11 dBm _________dBm __...

Page 171: ...dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness Step Sweep Set Power Max Power Min Power Variation 3 dBm _________dBm ___...

Page 172: ..._________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness Step Sweep Set Power Max Power Min Power Variation...

Page 173: ...________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness Step Sweep Set Power Max Power Min Power Variation 1...

Page 174: ...______dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness Step Sweep Set Power Max Power Min Power Variation 7 d...

Page 175: ...Bm 13 dBm 12 dBm 11 dBm 10 dBm 9 dBm 8 dBm 7 dBm 6 dBm 5 dBm 4 dBm 3 dBm 2 dBm 1 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dB...

Page 176: ...m 11 dBm 10 dBm 9 dBm 8 dBm 7 dBm 6 dBm 5 dBm 4 dBm 3 dBm 2 dBm 1 dBm 0 dBm 1 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _...

Page 177: ...Bm 3 dBm 2 dBm 1 dBm 0 dBm 1 dBm 2 dBm 3 dBm 4 dBm 5 dBm 6 dBm 7 dBm 8 dBm 9 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm __...

Page 178: ..._dBm _________dBm 17 dBm 16 dBm 15 dBm 14 dBm 13 dBm 12 dBm 11 dBm 10 dBm 9 dBm 8 dBm 7 dBm 6 dBm 5 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _____...

Page 179: ...___dBm _________dBm 15 dBm 14 dBm 13 dBm 12 dBm 11 dBm 10 dBm 9 dBm 8 dBm 7 dBm 6 dBm 5 dBm 4 dBm 3 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _____...

Page 180: ..._______dBm _________dBm 7 dBm 6 dBm 5 dBm 4 dBm 3 dBm 2 dBm 1 dBm 0 dBm 1 dBm 2 dBm 3 dBm 4 dBm 5 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _______...

Page 181: ...________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 6 dBm 5 dBm 4 dBm 3 dBm 2 dBm 1 dBm 0 dBm 1 dBm 2 dBm 3 dB...

Page 182: ...______dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 3 dBm 2 dBm 1 dBm 0 dBm 1 dBm 2 dBm 3 dBm 4 dBm 5 dBm 6 dBm...

Page 183: ...____dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 6 dBm 5 dBm 4 dBm 3 dBm 2 dBm 1 dBm...

Page 184: ..._dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 3 dBm 2 dBm 1 dBm 0 dBm 1 dBm 2 dBm 3 d...

Page 185: ...m _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 2 5 dBm 1 5 dBm 0 5 dBm 0 5 dBm 1 5 dBm 2 5 dBm 3 5 dBm 4 5 dBm 5 5 dBm 6 5 dBm 7...

Page 186: ..._________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 1 dBm 2 dBm 3 dBm 4 dBm 5 dBm 6 dBm 7 dBm 8 dBm 9 dBm 10 dBm 11 dBm 1...

Page 187: ...dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 2 dBm 1 dBm 0 dBm 1 dBm 2 dBm 3 dBm 4 dBm 5 dBm 6 dBm 7 dBm 8 dBm...

Page 188: ..._________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 1 5 dBm 2 5 dBm 3 5 dBm 4 5 dBm 5 5 dBm 6 5 dBm 7 5 dBm 8 5 dBm 9 5 dBm 10 5 dBm 1...

Page 189: ..._________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 0 dBm 1 dBm 2 dBm 3 dBm 4 dBm 5 dBm 6 dBm 7 dBm 8 dBm 9 dBm 10 dBm 11 dBm 12 dBm _...

Page 190: ...ESSAGES 6 3 Self Test Error Messages 6 3 Normal Operation Error and Warning Status Messages 6 8 6 3 TROUBLESHOOTING 6 10 6 4 ROUTINE MAINTENANCE 6 13 Cleaning the Fan Filter 6 13 Cleaning the Data Dis...

Page 191: ......

Page 192: ...81XXC firmware includes internal diagnostics that self test the instrument These self test diag nostics perform a brief go no go test of most of the instrument PCBs and other internal assemblies You c...

Page 193: ...ates the power supply is not phase locked to the 400 kHz reference frequency The 681XXC is still operable in a degraded mode The RF output may contain more spurious signals than normal Error 107 Sweep...

Page 194: ...zer DAC on the A12 PCB The 681XXC is still operable but frequency accuracy of the RF output is degraded Error 118 Switchpoint DAC Failed Indicates a failure of the Switchpoint DAC on the A12 PCB The 6...

Page 195: ...3 5 5 GH Switched Filter Indicates a failure in the 3 3 5 5 GHz switched filter path within the switched filter assembly The 681XXC may or may not produce an RF output in this frequency range Use caut...

Page 196: ...DM The 681XXC is still operable but it will not produce an RF output in the 25 32 GHz frequency range Error 141 20 25 GHz SDM Section Failed Indicates a failure in the 20 25 GHz switched doubler filte...

Page 197: ...t frequency is not phase locked The frequency accuracy and stability of the RF output is greatly reduced Normally caused by an internal component failure Run self test to verify malfunction RANGE Disp...

Page 198: ...power level usually clears the warning UNLOCKED When Unlocked Narrow FM or Unlocked Wide FM is selected ON this warning message appears indicating that the instrument is not phase locked during this...

Page 199: ...line fuse on the rear panel q If the fuse is defective replace see page 6 14 q If the fuse is good go to the next step Step 2 Check to see if power is available at the power receptacle q If not move...

Page 200: ...fan is still operating clean the air filter see page 6 13 q If the fan is not operating call a service technician LOCK ERROR is Displayed Trouble Description This message is displayed in the frequenc...

Page 201: ...ep size value entered is greater than the sweep range 4 the number of steps entered results in a step size of less than 1 kHz 0 1 Hz with Option 11 or 0 1 dB 0 01 mV or 5 the step sweep time entered d...

Page 202: ...filter as follows Step 1 Remove the filter guard from the rear panel by pulling out on the four panel fas teners holding them in place Figure 6 1 Step 2 Vacuum the honeycomb filter to clean it Step 3...

Page 203: ...o the fuse holder Step 1 Disconnect the 681XXC from the power source Step 2 Using a small flat blade screwdriver turn the fuse cap counter clockwise and re move the fuse holder 6 14 681XXC OM OPERATOR...

Page 204: ...Install the fuse holder in the rear panel Using the screwdriver rotate the fuse cap clockwise to secure the fuse holder in place Step 5 Reconnect the signal generator to the power source 681XXC OM 6...

Page 205: ...9 7 3 USE WITH A 56100A SCALAR NETWORK ANALYZER 7 10 Connecting the 681XXC to the 56100A 7 10 7 4 USE WITH A 360B VECTOR NETWORK ANALYZER 7 12 Connecting the 681XXC to the 360B 7 12 Modes of Operation...

Page 206: ......

Page 207: ...Instructions for connecting the 681XXC to an Anritsu Model 56100A Scalar Network Analyzer so that it can be used as a signal source for the analyzer q Instructions for connecting the 681XXC to a Anri...

Page 208: ...instrument Step 2 Connect the ends of the flat interface ca ble to the rear panel Serial I O connectors on the Master and Slave instruments Step 3 Connect one end of a coaxial cable to the rear panel...

Page 209: ...press Master Slave to go to the Master Slave Menu display below This menu lets you perform the following q Go to the Slave Frequencies List menu q Set the dF frequency for the Slave unit q Set the Sl...

Page 210: ...press Previous Menu to return to the Master Slave Menu below The Master Slave menu lets you set the dF fre quency and L1 and L2 power level parameters for the Slave unit Press Slave DF to open the dF...

Page 211: ...hen ever the F1 F2 sweep range is selected on the Mas ter unit The Master unit will sweep from F1 F2 with the values of F1 and F2 defined in the Master unit s frequency list Master Slave Operation in...

Page 212: ...appropriate termination key When you have finished setting the open parameter close it by pressing its menu soft key or by making another menu selection Press Previous Menu to return to the Slave Fre...

Page 213: ...ont panel control On the Master instrument select CW mode At the CW Menu press Master Slave to go to the Master Slave Menu display At the Master Slave Menu display press Enable This terminates master...

Page 214: ...the dedicated system bus cable P N 2100 1 to the 56100A rear panel DEDICATED GPIB connector Con nect the other end of the cable to the 681XXC rear panel IEEE 488 GPIB con nector Step 3 Turn on the 681...

Page 215: ...e to the 681XXC rear panel FM IN connector Con nect the other end to the 360B rear panel EXT FM F LOCK OUTPUT connector Step 2 Connect one end of a coaxial cable to the 681XXC rear panel 10 MHz REF IN...

Page 216: ...iguration and operation of the 681XXC for both modes of operation are described in the following paragraphs Source Lock Mode When operating in source lock mode the 360B phase locks the frequency outpu...

Page 217: ...ons Turn on the 360B and configure it for source lock mode of operation Refer to the 360B VNA opera tion manual Once configured the 360B takes con trol of the signal generator When the 360B takes cont...

Page 218: ...cy and phase sig nal so as to phase lock itself to the reference signal from the 681XXC Due to the inherent resolution of the 360B s frequency readout frequency resolution is limited to 1 kHz interval...

Page 219: ...igure it for tracking mode of operation Refer to the 360B VNA operation man ual Once configured the 360B should take control of the signal generator When the 360B takes control the display of all pa r...

Page 220: ...one end of a GPIB cable to the 681XXC rear panel IEEE 488 GPIB con nector Connect the other end to the HP8757D rear panel 8757 SYSTEM IN TERFACE connector Step 2 Connect one end of a coaxial cable ha...

Page 221: ...681XXC The 681XXC must be set to GPIB address 19 and in the 8757D Scalar mode of operation to operate as a signal source for the SNA The following paragraphs describe how to set up the 681XXC to enabl...

Page 222: ...s play Press More to go to the First Additional Configure GPIB menu below At this menu press More to go to the Second Addi tonal Configure GPIB menu below Press 8757D Scalar to enable the 8757D Scalar...

Page 223: ...57D to initiate scalar network analyzer operation Refer to the Hewlett Packard Model 8757D Scalar Network Analyzer Operation Manual for operating instructions 681XXC OM 7 19 7 20 USE WITH USE WITH A H...

Page 224: ...s 681XXC Synthesized Signal Generator A 2 REAR PANEL CONNECTORS Figure A 1 provides a illustration of the rear panel and describes the rear panel connectors A 3 CONNECTOR PINOUT DIAGRAMS Figures A 2 a...

Page 225: ...P E C I F I E D T Y P E A N D R A T E D F U S E H E A V Y W E I G H T T 2 5 A 2 2 0 V T 5 A 1 1 0 V W A R N I N G D O N O T O P E R A T E W I T H P O W E R C O R D U N G R O U N D E D I N P U T 9 0 1...

Page 226: ...or 600W are selectable via front panel menu or GPIB BNC connector IN Accepts an external TTL level signal to square wave pulse modulate the RF output BNC connector EXT ALC IN Provides for leveling th...

Page 227: ...6 RETRACE BLANKING Retrace Blanking Output Provides a 5V or 5V signal coincident with sweep re trace Signal polarity selected from a front panel menu 7 L ALT SWP L Alternate Sweep Output Provides a T...

Page 228: ...to stop the sweep in both ana log and step sweep modes The sweep resumes when the signal is removed 19 AUX 2 Aux 2 Auxiliary input output to the processor PC3 20 BANDSWITCH BLANK Bandswitch Blanking...

Page 229: ...ssed listeners have accepted the current data byte for internal processing 9 IFC Interface Clear A low true state places all bus instruments in a known quiescent state unaddressed to talk unaddressed...

Page 230: ...d Accuracy Same as internal or external 10 MHz time base Resolution Minimum Step Size 1 kHz 0 1 Hz with Option 11 Linear Log Sweep User selectable linear or log sweep In log sweep step size logarithmi...

Page 231: ...Second Sweep Time Produces an intensified dot on trace obtained by momentary dwell in RF sweep Marker Accuracy Same as sweep frequency accuracy Marker Resolution Analog Sweep 1 MHz or Sweep Width 409...

Page 232: ...o 65 GHz 880 Frequency Range Unlocked Narrow FM Mode kHz RMS Unlocked Wide FM Mode kHz RMS 10 MHz to 20 GHz 5 25 20 GHz to 40 GHz 10 50 40 GHz to 65 GHz 20 100 Frequency Range Offset From Carrier 100...

Page 233: ...7C 2 0 to 20 0 13 0 11 0 3 0 68147C 0 01 to 20 0 13 0 11 0 3 0 68167C 0 01 to 2 0 2 0 to 20 0 20 0 to 40 0 13 0 9 0 6 0 11 0 7 0 3 0 Not Available 68177C 0 01 to 2 0 2 0 to 20 0 20 0 to 40 0 40 0 to 5...

Page 234: ...Off state the RF oscillator is turned off The On or Off state is indicated by two LEDs located below the OUTPUT ON OFF key on the front panel RF On Off Between Frequency Steps System menu se lection...

Page 235: ...th 3 dB DC to 50 kHz minimum DC to 100 kHz typical Flatness DC to 10 kHz rates 0 3 dB Accuracy 5 Distortion 5 typical Incidential Phase Modulation 30 depth 10 kHz rate 0 2 radians Maximum Input 1V FRE...

Page 236: ...lftest soft key is selected If an error is detected an error mes sage is displayed in a window on the LCD identifying the probable cause and remedy Secure Mode Disables all frequency power level and m...

Page 237: ...el modulation menu IN Accepts an external TTL compatible signal to pulse modulate the RF output signal Front or rear panel in put selectable from front panel modulation menu EXT ALC IN External ALC In...

Page 238: ...tor Adds a 10 dB step electronic attenuator with a 120 dB range for models having a high end frequency of 8 4 GHz Rated RF output power is reduced Option 2F 120 dB Electronic Step Attenuator Adds a 10...

Page 239: ...electing Linear or Logarithmic Sweep 3 57 Setting Dwell Time 3 54 Setting Step Size 3 54 D Data Display Description 3 8 Menu Display Format 3 9 Menu Keys 3 10 Data Entry Area Description 3 12 Default...

Page 240: ...s List of 1 4 Modulation Modes AM Mode 3 73 FM Mode 3 73 Square Wave Modulation Mode 3 73 O Operating Environment 2 6 Operational Verification Tests 5 3 Operator Maintenance Error and Warning Status M...

Page 241: ...he GPIB 3 85 Configuring the Rear Panel 3 82 Configuring the RF 3 83 Frequency Scaling 3 81 Menu Map 4 18 Setting Increment Sizes 3 88 T Test Equipment 1 8 5 3 Testing Operational Verification CW Freq...

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