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Setting the
Analog
Sweep Time

The duration of the analog sweep can be set for any
time in the range of 30 ms to 99 sec. The sweep time
parameter is set from the sweep ramp menu.

To go to the Analog Sweep Ramp menu (below) from
the Analog Sweep menu, press

Sweep Ramp

.

This menu lets you set the sweep time 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 en-
ter a new sweep time using the key pad and appro-
priate termination key. To close the open sweep time
parameter once you have set the desired time, press

Sweep Time

or make another menu selection.

To go to the Analog Sweep Trigger menu from this
menu, press

Trigger Menu

. Sweep trigger is de-

scribed on the next page.

Press

Previous Menu

to return to the Analog

Sweep menu.

LOCAL (FRONT

SWEEP FREQUENCY

PANEL) OPERATION

OPERATION

3-24

681XXB OM

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Содержание 680XXB

Страница 1: ...JARVIS DRIVE MORGAN HILL CA 95037 2809 SERIES 681XXB SYNTHESIZED SWEEP GENERATOR OPERATION MANUAL Serial Number 512001 and above P N 10370 10298 REVISION B PRINTED AUGUST 1995 COPYRIGHT 1995 WILTRON...

Страница 2: ...oes not apply to defects resulting from improper or inadequate mainte nance by the Buyer unauthorized modification or misuse or operation outside of the environmental specifications of the product No...

Страница 3: ...r the Declaration of Conformity page Changed November 1995 2 Page 1 4 Replace with enclosed pages 1 3 and 1 4 Changed November 1995 3 Pages 2 3 thru 2 6 Replace with enclosed pages 2 3 thru 2 6 Change...

Страница 4: ...11 Page A 2 Replace with enclosed pages A 1 and A 2 Changed November 1995 12 Pages B 2 thru B 5 Replace with enclosed pages B 1 thru B 6 Changed November 1995 PCOs 22121 22151 and 22191 C 2 681XXB OM...

Страница 5: ...Products Synthesized CW Sweep Signal Generators Models 680XXB 681XXB 682XXB 683XXB Standards EN 55011 1991 Group 1 Class A EN 50082 1 1992 IEC 801 2 1991 Level 3 IEC 801 3 1984 Level 2 IEC 801 4 1988...

Страница 6: ...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...

Страница 7: ...ctrical shock or damage to precision components do not remove the equipment covers WARNING For Safety Before changing the fuse always remove the power cord from the power outlet There is the risk of r...

Страница 8: ...following the tab Chapter 4 Local Operation Menu Maps Chapter 4 provides menu maps that support the local front panel operating instructions found in Chapter 3 It includes menu maps for all of the fre...

Страница 9: ...escriptions for the AUX I O and IEEE 488 GPIB connectors Appendix B Performance Specifications Appendix B lists the performance specifications for the Series 681XXB Synthesized Sweep Generator Supplem...

Страница 10: ...DESCRIPTION 1 3 1 4 IDENTIFICATION NUMBER 1 6 1 5 RELATED MANUALS 1 6 GPIB Programming Manual 1 6 SCPI Programming Manual 1 6 Maintenance Manual 1 6 1 6 OPTIONS 1 7 1 7 PERFORMANCE SPECIFICATIONS 1 8...

Страница 11: ...Figure 1 1 Series 681XXB Synthesized Sweep Generator...

Страница 12: ...anuals options and performance specifications A listing of recommended test equip ment is also provided 1 3 DESCRIPTION The Series 681XXB Synthesized Sweep Generators are microprocessor based synthesi...

Страница 13: ...GHz 2 0 20 0 GHz 20 0 40 0 GHz 13 0 dBm 9 0 dBm 6 0 dBm 11 0 dBm 7 0 dBm 3 0 dBm 68175B 0 5 2 2 GHz 2 2 20 0 GHz 20 0 40 0 GHz 40 0 50 0 GHz 11 0 dBm 10 0 dBm 2 5 dBm 2 5 dBm 10 0 dBm 8 5 dBm 0 0 dBm...

Страница 14: ...13 0 dBm 10 0 dBm 11 0 dBm 11 0 dBm 7 5 dBm 68159B 0 01 2 0 GHz 2 0 20 0 GHz 20 0 26 5 GHz 13 0 dBm 13 0 dBm 10 0 dBm 11 0 dBm 11 0 dBm 7 5 dBm 68163B 2 0 20 0 GHz 20 0 40 0 GHz 13 0 dBm 6 0 dBm 11 0...

Страница 15: ...ta transfer and control functions a com plete listing and description of all 681XXB GPIB Product Specific commands and several program ming examples The WILTRON part number for the GPIB Programming Ma...

Страница 16: ...a 10 dB per step attenuator with a 90 dB range for models having a high end fre quency of 60 GHz Output power is selected directly in dBm on the front panel or via GPIB Rated RF output power is reduce...

Страница 17: ...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 with Power S...

Страница 18: ...5 Warmup Time 2 6 Operating Environment 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...

Страница 19: ...een checked against the packing list and the sweep gener ator has been checked for mechanical and electrical operation If the shipment is incomplete or if the sweep generator is damaged me chanically...

Страница 20: ...nge 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 selected Line fuse values for the line voltages are print...

Страница 21: ...ure On the front panel press LINE to switch the 681XXB from OPERATE green LED on to STANDBY orange LED on NOTE During standby operation the fan runs continuously PREPARATION INSTALLATION FOR USE LINE...

Страница 22: ...e following en vironmental limits Temperature 0 C to 50 C 32 F to 122 F Humidity 5 to 95 relative at 40 C Altitude up to 4600 meters approximately 15 000 feet Cooling Internal cooling is provided by f...

Страница 23: ...e cable 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 restrictions are as follows No more than 15 inst...

Страница 24: ...played Press the menu soft key GPIB Address to change the current GPIB address of the sweep generator Enter a new address using the cursor control key or the data entry keypad and the terminator key H...

Страница 25: ...enerators 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 681XXB GPIB Product Specific command...

Страница 26: ...se two options is possible instructions for packaging and shipment are given below Use a Suitable Container Obtain a corrugated cardboard carton with a 275 pound test strength This carton should have...

Страница 27: ...016 44 61 065 GERMANY ANRITSU WILTRON GmbH Rudolf Diesel Strabe 17 8031 Gilching Telephone 08 10 58 055 FAX 08 10 51 700 INDIA MEERA AGENCIES P LTD A 23 Hauz Khas New Delhi 110 016 Telephone 011 685 3...

Страница 28: ...t Control Key 3 7 Connectors 3 7 3 3 DATA DISPLAY AREA 3 8 Menu Display Format 3 9 Menu Keys 3 10 3 4 DATA ENTRY AREA 3 12 3 5 INSTRUMENT START UP 3 12 Powering Up the 681XXB 3 12 Start Up Display 3 1...

Страница 29: ...etting Step Size and Dwell Time 3 27 Selecting Manual Sweep Mode 3 28 Selecting a Sweep Range 3 29 Selecting a Power Level 3 31 Frequency Markers 3 32 Selecting Alternate Sweep Mode 3 34 3 9 FIXED POW...

Страница 30: ...cy Modulation Operating Modes 3 62 Providing Frequency Modulation 3 63 Square Wave Modulation Operating Modes 3 65 Providing Square Wave Modulation 3 65 3 13 SYSTEM CONFIGURATION 3 68 Configuring the...

Страница 31: ...panel data display area and data entry area that identify and describe all front panel con trols inputs and outputs An annotated diagram of the menu display format showing where the current frequency...

Страница 32: ...ur rent status of the 681XXB in a menu display for mat This information includes the operating mode of the instrument the value of the active frequency and power level parameters and the modulation st...

Страница 33: ...ors 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 Externa...

Страница 34: ...the menu display and identifies the dis play elements It also shows the placement of the menu keys in rela tion to the display The paragraphs that follow provide descriptions of the menu display elem...

Страница 35: ...le Bars 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 c...

Страница 36: ...of each main menu follows CW SWEEP SELECT This menu lets you select between CW Analog Step and Manual Sweep frequency modes FREQUENCY CONTROL In CW frequency mode this menu lets you select the CW fre...

Страница 37: ...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 pressed the System menu is displayed The System menu and its sub menus d...

Страница 38: ...used to increase 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 ed...

Страница 39: ...he param eter s value increases or decreases by the set amount KEYPAD The numeric keypad provides for entering fre quency power level time and number of steps pa rameters and GPIB address values The k...

Страница 40: ...until the sweep gener ator has loaded all programs Upon completion of power up the 681XXB returns to the exact configuration it was in when last turned off Standby Operation Whenever the sweep genera...

Страница 41: ...ault Pa rameters You can reset the 681XXB to the factory selected de fault parameter values at any time during normal operation The default parameters are shown in Ta ble 3 1 on the following page NOT...

Страница 42: ...0 40 0 2 0 5 0 8 0 11 0 14 0 17 0 20 0 1 0 68175B 3 5 2 2 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 68177B 3 5 2 0 50 0 2 0 5 0 8 0 11 0 14 0 17 0 20 0 3 5...

Страница 43: ...dB 68165B 50 ms 50 ms 50 50 ms 50 0 0 dB 68169B 50 ms 50 ms 50 50 ms 50 0 0 dB 68175B 50 ms 50 ms 50 50 ms 50 0 0 dB 68177B 50 ms 50 ms 50 50 ms 50 0 0 dB 68185B 50 ms 50 ms 50 50 ms 50 0 0 dB 68187B...

Страница 44: ...arameters If you wish to follow along on your synthesizer you can obtain this same menu display by resetting your instrument press SYSTEM then press Reset Opening the Parameter In order for the value...

Страница 45: ...urn the knob clock wise or counter clockwise to increase or decrease the value of the parameter by the unit size Turning the knob rapidly changes the value of the parame ter in larger steps Using a Se...

Страница 46: ...terminated in GHz MHz kHz or Hz however it is al ways displayed on the data display in GHz A time entry may be terminated in Sec ms s or ns however it is always displayed on the data display in Sec If...

Страница 47: ...e CW frequency mode Selecting a CW Frequency There are several ways to select a CW frequency for output You can 1 edit the current frequency 2 en ter a new frequency or 3 select one of the 20 pre set...

Страница 48: ...tag edit or output a frequency from the list Use the cursor control key to select a frequency from the frequency list The selected frequency is highlighted in reverse video and displayed in full be lo...

Страница 49: ...Scan Dn keys Return to the CW Frequency Control menu by press ing Previous Menu Selecting a Power Level While in the CW frequency mode you can edit the current CW frequency output power level or enter...

Страница 50: ...s you set the ramp speed and turn the CW ramp on off To set ramp speed press Sweep Time The sweep time parameter opens for editing Edit the current sweep time using the cursor control key or rotary da...

Страница 51: ...cies and at each band switch point When the sweep width is 100 MHz only the center frequency of the sweep is phase lock corrected To place the 681XXB in analog sweep frequency mode press the main menu...

Страница 52: ...ter for editing press Sweep Time Edit the current sweep time using the cursor control key or the rotary data knob or en ter a new sweep time using the key pad and appro priate termination key To close...

Страница 53: ...le A single sweep starts when the trigger key is pressed If a sweep is in progress when the key is pressed it aborts and resets To go to the Analog Sweep Trigger menu below from the Analog Sweep Ramp...

Страница 54: ...tep sweep menu To place the 681XXB in 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 l...

Страница 55: ...ss 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 change then edit the current value using the cursor control key or...

Страница 56: ...steps between the start and stop frequencies are controllable from the manual sweep menu To place the 681XXB in manual sweep frequency mode press the main menu key CW SWEEP SELECT At the resulting me...

Страница 57: ...pens the stop frequency parame ter 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...

Страница 58: ...termined by the dF fre quency parameter F6 dF provides a symmetrical frequency sweep about the center frequency F6 The sweep width is determined by the dF fre quency parameter To select one of the pre...

Страница 59: ...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 ke...

Страница 60: ...er produces an intensified dot on a CRT display at each marker fre quency Intensity markers are only available in the analog sweep frequency mode and are obtained from a momentary dwell during the swe...

Страница 61: ...eady 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 qu...

Страница 62: ...play 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 Turn the alternate sweep mode on off Go to the alternate range m...

Страница 63: ...rn to the Alter nate Sweep menu 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 Full F1 F2 F3...

Страница 64: ...evel 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 power level...

Страница 65: ...ss 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 Edit the power level parameter Edit the level...

Страница 66: ...the following Select preset power levels L0 L1 L2 L3 or L4 for output Go to the Level List menu Go to the Tagged Levels menu Level List To go to the Level List menu below press Level List This menu le...

Страница 67: ...ct another level from the list and press Output Level On the level list the output power level selection is marked by a black square or if tagged an L highlighted in reverse video When you are finishe...

Страница 68: ...ue and apply it to the dis played 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...

Страница 69: ...CW fre quency Menus provided let you set or select the sweep range the step size the dwell time per step and the sweep trigger To place the 681XXB in a CW power sweep mode from a CW frequency menu pre...

Страница 70: ...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 change then edit the current value using the cursor control key or ro...

Страница 71: ...en the trigger key is pressed If a sweep is in pro gress when the key is pressed it aborts and re sets To go to the CW Level Sweep Trigger menu from the CW Level Sweep Ramp menu press Trigger Menu To...

Страница 72: ...ent power level sweep range start by opening either the start or stop power level pa rameter in the display above Edit L1 opens the start power level parameter Edit L2 opens the stop power level param...

Страница 73: ...or each preset sweep range Setting a Preset Power Level Sweep Range At the Level 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 th...

Страница 74: ...lect an analog sweep frequency step power mode 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 ke...

Страница 75: ...ameter Press Num of Steps to open the number of steps parameter 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 value...

Страница 76: ...ns 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 Figure...

Страница 77: ...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...

Страница 78: ...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 connec tion a...

Страница 79: ...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...

Страница 80: ...nu below 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 A...

Страница 81: ...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...

Страница 82: ...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...

Страница 83: ...el is accom plished by summing a power offset word from the power offset table with the sweep generator s nor mal power level DAC word at each frequency point Up to five user level flatness correction...

Страница 84: ...oint in the test setup where the corrected power level is desired Power Meter Model and GPIB Address In order for the 681XXB to control the power meter the GPIB address and power meter model must be s...

Страница 85: ...meters are the Anritsu 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 to return...

Страница 86: ...3 User 4 or User 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 curre...

Страница 87: ...ting the power offset table 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 th...

Страница 88: ...OUTPUT ON OFF key Step 2 Press the LINE 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...

Страница 89: ...itivity 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 fir...

Страница 90: ...selection Frequency Modulation Operating Modes The sweep generator has two FM operation modes Locked FM and Unlocked FM In Locked FM mode frequency modulation of the output signal is accom plished by...

Страница 91: ...w press the menu soft key More The additional External FM Status Menu below is displayed This menu lets you select the FM operating mode Press Locked to select the Locked FM operating mode press Unloc...

Страница 92: ...ur 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 1 kHz V to 20 MHz V for Locked and Unlocked Narrow FM modes...

Страница 93: ...wing 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 resul...

Страница 94: ...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...

Страница 95: ...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...

Страница 96: ...ne terminator and incre ment sizes for frequency power level and time parameters Use the System Configuration menu map Chapter 4 Figure 4 13 to follow the menu sequences To go to the System Configurat...

Страница 97: ...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 Press...

Страница 98: ...king signal output is available at the rear panel AUX I O connec tor The display will reflect your selection Press Penlift to select normally open N O or nor mally closed N C contacts on the internal...

Страница 99: ...ect your selection Press Delta F RF to select RF On or Off during fre quency switching in CW or step sweep modes The display will reflect your selection Press Ramp Rest to select 0 or 10 for the ramp...

Страница 100: ...GPIB address is 5 Enter a new address between 1 and 30 using the cursor control key or the data en try keypad and the terminator key Hz ns ADRS The new GPIB address will appear on the display Press Li...

Страница 101: ...n Press Pwr Mtr Address to change the address of the power meter on the GPIB the power meter s de fault GPIB address is 13 Enter a new address be tween 1 and 30 using the cursor control key or the dat...

Страница 102: ...splayed 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 pa rameter Open the parameter...

Страница 103: ...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...

Страница 104: ...ERATE STANDBY key to turn the instrument 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...

Страница 105: ...cure mode and how to return to normal op eration To place the 681XXB in the secure mode first press SYSTEM to display the System Menu Next press Secure This places the sweep gener ator in the secure m...

Страница 106: ...Table of Contents 4 1 INTRODUCTION 4 3 4 2 MENU MAP DESCRIPTION 4 3 Chapter 4 Local Operation Menu Maps...

Страница 107: ...f each menu s soft keys is provided If a menu soft key se lects 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 ele ments Th...

Страница 108: ...nt Power Level CW Ramp On Off Set The Sweep Time Typical Menu Soft Key Functional Description Points To The Menu Displayed Whenever The Menu Soft Key Is Depressed A Main Menu Display Main Menu Key Cur...

Страница 109: ...d Frequency Edit Current Power Level Edit Current Frequency Edit Current Power Level Edit Current Power Level On Off Set The Sweep Time Set Slave DF Frequency Set Slave Main Power Level Master Slave O...

Страница 110: ...quency Edit Current Sweep Time On Off On Off On Off On Off Edit Start Frequency Edit End Frequency Edit Current Power Level Tag Untag Highlighted Marker Frequency Edit Highlighted Marker Frequency On...

Страница 111: ...eep Stop Frequency Edit Main Sweep Power Level Edit Start Frequency Edit End Frequency Edit Current Sweep Time On Off On Off On Off On Off Edit Start Frequency Edit End Frequency Edit Current Power Le...

Страница 112: ...MODULATION CW SWEEP SELECT FREQUENCY CONTROL LEVEL ALC SELECT LEVEL CONTROL Edit Start Frequency Edit End Frequency Edit Start Frequency Edit End Frequency Edit Current Power Level Edit Step Size Edit...

Страница 113: ...NTROL Display Showing Level Offset On Edit Current Power Level Output Previous Tagged Power Level Edit Current Power Level Tag Untag Highlighted Power Level Edit Highlighted Power Level Output Highlig...

Страница 114: ...TION CW SWEEP SELECT FREQUENCY CONTROL LEVEL ALC SELECT LEVEL CONTROL On Off Edit Step Size Edit Dwell TIme On Off On Off Edit Number of Steps Edit End Power Level Edit Start Power Level Edit End Powe...

Страница 115: ...REQUENCY CONTROL LEVEL ALC SELECT LEVEL CONTROL SYSTEM MODULATION CW SWEEP SELECT FREQUENCY CONTROL LEVEL ALC SELECT LEVEL CONTROL Edit Start Power Level Edit End Power Level Edit Start Power Level Ed...

Страница 116: ...tion 10dB Steps 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 th...

Страница 117: ...f 600 or 50 Input 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 MODUL...

Страница 118: ...ance Edit FM Sensitivity 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 S...

Страница 119: ...are Wave Source 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...

Страница 120: ...Terminator Brightens The Display Dims The Display Select RF On or Off During Retrace Select Reset For Single Sweep 0 For Bottom of Sweep Ramp 10 For Top of Sweep Ramp Select RF On or Off During Frequ...

Страница 121: ...ower Up 5 4 Self Test 5 4 Resetting the 681XXB 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...

Страница 122: ...These tables are included as part of the operational verifica Instrument Critical Specification Recommended Manufacturer Model Frequency Counter with Cable Kit and External Mixer Range 0 01 to 65 GHz...

Страница 123: ...tor to in sure proper operation of the instrument PCBs and other internal assemblies To self test the signal generator press SYSTEM Then press the System Menu soft key Selftest When the self test is c...

Страница 124: ...ggle switch ensure the switch is set to EXT Step 2 Connect the 681XXB 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...

Страница 125: ...unter read ing meets specifications 100 Hz of the value shown on the test record for stand ard models 10 Hz for instruments with Option 11 Step 3 Record the Frequency Counter reading on the test recor...

Страница 126: ...___________ 2 000 002 000 _____________________ 2 000 003 000 _____________________ 2 000 001 000 _____________________ 2 000 004 000 _____________________ 2 000 002 000 _____________________ 2 000 00...

Страница 127: ...00 000 _____________________ 46 000 000 000 _____________________ 38 000 000 000 _____________________ 50 000 000 000 _____________________ 40 000 000 000 _____________________ 2 000 001 000 _________...

Страница 128: ..._ 50 000 000 000 _____________________ 50 000 000 000 _____________________ 54 000 000 000 _____________________ 54 000 000 000 _____________________ 58 000 000 000 _____________________ 58 000 000 00...

Страница 129: ...__________________ 2 000 000 100 0 _____________________ 2 000 000 200 0 _____________________ 2 000 000 300 0 _____________________ 2 000 000 100 0 _____________________ 2 000 000 400 0 _____________...

Страница 130: ...00 000 000 0 _____________________ 35 000 000 000 0 _____________________ 46 000 000 000 0 _____________________ 38 000 000 000 0 _____________________ 50 000 000 000 0 _____________________ 40 000 00...

Страница 131: ...000 000 0 _____________________ 50 000 000 000 0 _____________________ 54 000 000 000 0 _____________________ 54 000 000 000 0 _____________________ 58 000 000 000 0 _____________________ 58 000 000 0...

Страница 132: ...tep 2 Connect the Power Sensor to the RF OUT PUT of the 681XXB NOTE For 40 GHz models use the K male to 2 4 mm female adapter to connect the Power Sensor to the RF OUTPUT connector Step 3 Connect the...

Страница 133: ...e current power level parameter for editing e Set L1 to the power level noted on the test record Step 2 Measure the output power level with the Power Meter and record the reading on the test record St...

Страница 134: ...set The CW Menu is displayed b Press Step to place the 681XXB in the step sweep frequency mode and dis play the Step Sweep Menu below c With the Step Sweep menu displayed press the main menu key FREQU...

Страница 135: ...ond NOTE Monitor the 681XXB s Horizontal Output on the Oscilloscope to deter mine sweep start and stop Step 2 As the 681XXB steps through the full fre quency range measure the maximum and minimum Powe...

Страница 136: ...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...

Страница 137: ...81XXB s Horizontal Output on the Oscilloscope to deter mine 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...

Страница 138: ...m _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness Step Sweep Set Power Ma...

Страница 139: ..._________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness Step Sweep Set Power Max...

Страница 140: ..._______dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness S...

Страница 141: ..._____dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Specification is 1 0 dB Power Level Flatness Ste...

Страница 142: ...m _________dBm _________dBm 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...

Страница 143: ..._________dBm _________dBm 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 __...

Страница 144: ...____dBm _________dBm _________dBm _________dBm 17 dBm 16 dBm 15 dBm 14 dBm 13 dBm 12dBm 11 dBm 10 dBm 9 dBm 8 dBm 7dBm 6 dBm 5 dBm _________dBm _________dBm _________dBm _________dBm _________dBm ____...

Страница 145: ...__dBm _________dBm _________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 ______...

Страница 146: ...Bm 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 _________dBm _________dBm...

Страница 147: ...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 _________dBm ___...

Страница 148: ..._dBm 17 dBm 16 dBm 15 dBm 14 dBm 13 dBm 12dBm 11 dBm 10 dBm 9 dBm 8 dBm 7dBm 6 dBm 5 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _______...

Страница 149: ...Bm 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 _________dBm _________...

Страница 150: ...Bm 3 dBm 4 dBm 5 dBm 6 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm Spec...

Страница 151: ...dBm 5 5 dBm 6 5 dBm 7 5 dBm 8 5 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _______...

Страница 152: ...5 dBm 4 dBm 3 dBm 2 dBm 1 dBm 0 dBm 1 dBm 2 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm ________...

Страница 153: ...m 1 5 dBm 0 5 dBm 0 5 dBm 1 5 dBm 2 5 dBm 3 5 dBm 4 5 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm...

Страница 154: ...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 dBm 4 dBm 5 dBm 6 dBm _________dBm _________dBm _...

Страница 155: ..._________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 3 5 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 5 dBm 8 5 dBm _________dBm _____...

Страница 156: ...________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________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 2 dBm _____...

Страница 157: ...____dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 7 5 dBm 6 5 dBm 5 5 dBm 4 5 dBm 3 5 dBm 2 5 dBm 1 5 dBm 0 5 dBm 0 5 dBm 1 5 dBm 2 5 dBm 3 5 dBm 4 5 d...

Страница 158: ...____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 dBm 4 dBm 5 dBm 6 d...

Страница 159: ...dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 3 5 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 5...

Страница 160: ...Bm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 10 dBm 9 dBm 8 dBm 7 dBm 6 dBm 5 dBm 4 dBm 3 dBm 2 dBm...

Страница 161: ...________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 7 5 dBm 6 5 dBm 5 5 dBm 4 5 dBm 3 5 dBm 2 5 dBm 1 5 dBm 0 5 dBm 0 5 dBm...

Страница 162: ..._________dBm 6 dBm 5 dBm 4 dBm 3 dBm 2dBm 1 dBm 0 dBm 1 dBm 2 dBm 3 dBm 4 dBm 5 dBm 6 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _____...

Страница 163: ...________dBm 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 ______...

Страница 164: ...m 1 dBm 0 dBm 1 dBm 2 dBm 3 dBm 4 dBm 5 dBm 6 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _______...

Страница 165: ...___dBm _________dBm _________dBm 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 _________dB...

Страница 166: ...Bm _________dBm _________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...

Страница 167: ..._________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 dBm 4...

Страница 168: ...2 dBm 1 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 6 dBm 5 dBm 4 dBm 3...

Страница 169: ...Bm 1 dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm _________dBm 3 dBm 2 dBm 1 dBm 0 dB...

Страница 170: ...______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 dBm 4 dBm 5 dBm 6...

Страница 171: ...____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 7 dBm 8 dBm 9 d...

Страница 172: ...__dBm _________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 d...

Страница 173: ...Bm _________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...

Страница 174: ...________dBm _________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...

Страница 175: ..._______dBm _________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 dB...

Страница 176: ..._________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 5 dBm 8 5 dBm...

Страница 177: ...________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 12 dBm 13 dBm __...

Страница 178: ..._________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...

Страница 179: ..._______dBm _________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...

Страница 180: ...m _________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 9 dBm 10 dBm __...

Страница 181: ...________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 11 5 dBm 12 5 dB...

Страница 182: ..._____dBm _________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...

Страница 183: ...______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 _________dBm _____...

Страница 184: ...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 Replacing the Line Fuse 6 13 Cleaning the Fan Filt...

Страница 185: ...re includes internal diagnostics that self test the instrument These self test diagnos tics perform a brief go no go test of most of the in strument PCBs and other internal assemblies You can perform...

Страница 186: ...en Cold Indicates the 100 MHz crystal oven or the Option 16 high stability 10 MHz crystal oscillator has not reached operating temperature The 681XXB is still operable but frequency accuracy and stabi...

Страница 187: ...nalog sweeps but should operate normally in CW and step sweep modes Error 119 Center Frequency Circuits Failed Indicates a failure of the center frequency circuitry on the A12 PCB Do Not Attempt to Op...

Страница 188: ...ncy range Use caution and always determine the output power level when operating the 681XXB in this condition Error 132 5 5 8 4 GH Switched Filter Indicates a failure in the 5 5 8 4 GHz switched filte...

Страница 189: ...RF output in the 20 25 GHz frequency range Error 142 Sample and Hold Circuit Failed Indicates a failure of the sample and hold circuitry on the A10 PCB The 681XXB still operates normally but the RF o...

Страница 190: ...reduced Normally caused by an internal component failure Run self test to verify malfunction RANGE Displayed in the frequency parameters area when 1 the analog sweep start frequency entered is greater...

Страница 191: ...sually 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 FM mode of ope...

Страница 192: ...e power source then check the line fuse on the rear panel If the fuse is defective replace see page 6 13 If the fuse is good go to the next step Step 2 Check to see if power is available at the power...

Страница 193: ...operating clean the air filter see page 6 14 If the fan is not operating call a service technician LOCK ERROR is Displayed Trouble Description This message is displayed in the frequency pa rameters ar...

Страница 194: ...e F value entered re sults in a sweep outside the range of the instrument 3 the step size value entered is greater than the sweep range or 4 the number of steps entered results in a step size of less...

Страница 195: ...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 Install the filter guard back on the rear panel Step 4 Press in on th...

Страница 196: ...holder Step 3 Replace the fuse in the fuse holder Step 4 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 Reconne...

Страница 197: ...Fuse Fuse Holder Figure 6 2 Replacing the Line Fuse OPERATOR ROUTINE MAINTENANCE MAINTENANCE 681XXB OM 6 15 6 16 Changed November 1995...

Страница 198: ...7 7 Master Slave Operation in VNA Mode 7 7 Terminating Master Slave Operation 7 9 7 3 USE WITH A 562 SCALAR NETWORK ANALYZER 7 10 Connecting the 681XXB to the 562 7 10 7 4 USE WITH A 360B VECTOR NETWO...

Страница 199: ...ons for interconnecting and operating any two 68XXXBs in a master slave configuration Instructions for connecting the 681XXB to a WILTRON Model 562 Scalar Network Analyzer so that it can be used as a...

Страница 200: ...ter and Slave 68XXXBs Step 3 Connect one end of a coaxial cable to the rear panel 10 MHz REF OUT connector on the Master 68XXXB Connect the other end to the rear panel 10 MHz REF IN con nector on the...

Страница 201: ...er Slave Menu display below This menu lets you perform the following Go to the Slave Frequencies List menu Set the dF frequency for the Slave unit Set the Slave unit s main power level L1 Set the alte...

Страница 202: ...ess 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 fr...

Страница 203: ...whenever the F1 F2 sweep range is selected on the Master 68XXXB The Master 68XXXB will sweep from F1 F2 with the values of F1 and F2 defined in the Master unit s frequency list Master Slave Operation...

Страница 204: ...and 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...

Страница 205: ...front panel control On the Master 68XXXB 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 s...

Страница 206: ...ing proce dures Using the Auxiliary I O Cable Connect the 681XXB to the 562 SNA as shown in Figure 7 2 Step 1 Connect one end of the Auxiliary I O ca ble P N 806 7 to the 562 rear panel AUX I O connec...

Страница 207: ...KER OUT connec tor Connect the other end of the cable to the 562 rear panel VIDEO MARKER IN PUT connector Step 4 Connect one end of a coaxial cable to the 681XXB rear panel DWELL IN connector Connect...

Страница 208: ...Step 1 Connect one end of a coaxial cable to the 681XXB rear panel FM IN connector Con nect the other end to the 360B rear panel EXT FM LOCK OUTPUT connector Step 2 Connect one end of a coaxial cable...

Страница 209: ...iguration and operation of the 681XXB 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...

Страница 210: ...operation Refer to the 360B VNA opera tion manual Once configured the 360B takes con trol of the sweep generator When the 360B takes control the display of all pa rameters on the 681XXB is disabled a...

Страница 211: ...ncy and phase sig nal so as to phase lock itself to the reference signal from the 681XXB Due to the inherent resolution of the 360B s frequency readout frequency resolution is limited to 1 kHz interva...

Страница 212: ...igure it for tracking mode of operation Refer to the 360B VNA operation man ual Once configured the 360B should take control of the sweep generator When the 360B takes control the display of all pa ra...

Страница 213: ...es 681XXB Synthesized Sweep 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...

Страница 214: ...each frequency step in step sweep mode Also when video markers are selected provides 5V marker pulses and a 10V se lected marker pulse during forward sweep BNC connector HORIZ OUT Provides a 0V to 10...

Страница 215: ...IEEE 488 bus GPIB A pinout diagram for this con nector is shown in Figure A 3 SERIAL I O Provides access to two RS 232 terminal ports to support service and calibra tion functions and master slave op...

Страница 216: ...ANKING Retrace Blanking Output Provides a 5V or 5V signal coincident with sweep retrace Signal polarity selected from a front panel menu 7 L ALT SWP L Alternate Sweep Output Provides a TTL low level s...

Страница 217: ...low level signal to stop the sweep in both analog 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 Band...

Страница 218: ...s 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 to listen and...

Страница 219: ...0 1 Hz with Option 11 Steps User selectable number of steps or the step size Number of Steps Variable from 1 to 10 000 Step Size 1 kHz 0 1 Hz with Option 11 to the full fre quency range of the instrum...

Страница 220: ...d Step Sweep modes at the lesser of 10 dBm output or maximum specified leveled output power unless otherwise noted SPURIOUS SIGNALS Harmonic and Harmonic Related 681X5B Models 500 MHz to 2 2 GHz 50 dB...

Страница 221: ...26 5 13 0 9 0 6 0 11 0 7 0 3 5 68163B 2 0 to 20 0 20 0 to 40 0 9 0 6 0 7 0 3 0 68165B 0 5 to 2 2 2 2 to 20 0 20 0 to 40 0 13 0 9 0 6 0 11 0 7 0 3 0 68169B 0 01 to 2 0 2 0 to 20 0 20 0 to 40 0 13 0 9...

Страница 222: ...y 0 25 dB 2 0 dB 1 0 dB 1 0 dB 1 5 dB 1 5 dB 1 5 dB 25 60 dB 2 0 dB 1 0 dB 1 0 dB 1 5 dB 3 5 dB N A 60 dB 2 0 dB 1 0 dB 1 0 dB 2 5 dB 3 5 dB N A Flatness 0 25 dB 2 0 dB 0 8 dB 0 8 dB 1 1 dB 1 1 dB 1 1...

Страница 223: ...r controlled 0 01 dB to the full power range of the instrument Step Dwell Time Variable from 1 ms to 99 seconds If the sweep crosses a step attenuator setting there will be a sweep dwell of approximat...

Страница 224: ...ument is turned on control settings come on at the same functions and values existing when the instru ment was turned off Memory Sequencing Input Accepts a TTL low level sig nal to sequence through ni...

Страница 225: ...output signal Front or rear panel input 50 or 600 imped ance both selectable from front panel modulation menu IN Accepts an external TTL compatible signal to pulse modulate the RF output signal Front...

Страница 226: ...NS Option 1 Rack Mounting Rack mount kit containing a set of track slides 90 tilt capability mounting ears and front panel handles to let the instrument be mounted in a standard 19 inch equipment rack...

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