Anritsu 680 C Series Operation Manual

Synthesized cw generator

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Maintenance manual (317 pages)

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SERIES

680XXC

SYNTHESIZED CW GENERATOR

OPERATION MANUAL

P/N: 10370-10330

490 JARVIS DRIVE

REVISION: B

MORGAN HILL, CA 95037-2809

PRINTED: APRIL 2001

www.valuetronics.com

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Summary of Contents for Anritsu 680 C Series

Page 1 SERIES 680XXC SYNTHESIZED CW GENERATOR OPERATION MANUAL P/N: 10370-10330 490 JARVIS DRIVE REVISION: B MORGAN HILL, CA 95037-2809 PRINTED: APRIL 2001 COPYRIGHT 1999 ANRITSU CO. www.valuetronics.com...
Page 2 WARRANTY The Anritsu product(s) listed on the title page is (are) warranted against defects in materials and workmanship for one year from the date of shipment. Anritsu's obligation covers repairing or replacing products which prove to be defective during the warranty period.
Page 3 www.valuetronics.com...
Page 4 Safety Symbols To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Company uses the following symbols to indicate safety-related information. For your own safety, please read the information carefully BEFORE operating the equipment. WARNING WARNING indicates a hazard. It calls attention to a procedure that could result in personal injury or loss of life if not performed properly.
Page 5 For Safety WARNING When supplying power to this equipment, always use a three-wire power cable connected to a three-wire power line outlet. If power is supplied without grounding the equip- ment in this manner, there is a risk of receiving a severe or fatal electric shock.
Page 6 Table of Contents Chapter 1 General Information SCOPE OF MANUAL ....1-3 INTRODUCTION ....1-3 DESCRIPTION .
Page 7 Table of Contents (Continued) PREPARATION FOR STORAGE/SHIPMENT . . . 2-13 Preparation for Storage ... . . 2-13 Preparation for Shipment ... . 2-13 Chapter 3 Local (Front Panel) Operation INTRODUCTION .
Page 8 Table of Contents (Continued) Selecting a Sweep Range ... . 3-32 Selecting a Power Level... . . 3-34 Frequency Markers ....3-35 Selecting Alternate Sweep Mode .
Page 9 Table of Contents (Continued) Chapter 4 Local Operation–Menu Maps INTRODUCTION ....4-3 MENU MAP DESCRIPTION ... . . 4-3 Chapter 5 Operation Verification INTRODUCTION .
Page 10 Table of Contents (Continued) MASTER-SLAVE OPERATION ... 7-4 Connecting the Instruments ... 7-4 Initiating Master-Slave Operation ..7-5 Master-Slave Operation .
Page 11 Chapter 1 General Information Table of Contents SCOPE OF MANUAL ....1-3 INTRODUCTION ....1-3 DESCRIPTION .
Page 12 Figure 1-1. Series 680XXC Synthesized CW Generator www.valuetronics.com...
Page 13 SCOPE OF MANUAL This manual provides general information, installation, and operating information for the Anritsu Series 680XXC Synthesized CW Gener- ator. (Throughout this manual, the terms 680XXC and CW generator will be used interchangeably to refer to the instrument.) Manual or- ganization is shown in the table of contents.
Page 14 GENERAL 680XXC INFORMATION MODELS Table 1-1. Series 680XXC Models Output Power 680XXC Output Power Frequency Output Power w/Electronic Model w/Step Attenuator Step Attenuator 68017C 0.01 – 8.4 GHz +13.0 dBm +11.0 dBm +9.0 dBm 68037C 2.0 – 20.0 GHz +13.0 dBm +11.0 dBm +3.0 dBm 68047C...
Page 15 IDENTIFICATION INFORMATION NUMBER IDENTIFICATION All Anritsu instruments are assigned a unique six-digit ID number, NUMBER such as “875012”. The ID number is imprinted on a decal that is af- fixed to the rear panel of the unit. Special-order instrument configura- tions also have an additional special serial number tag attached to the rear panel of the unit.
Page 16 The Anritsu part number for the Main- tenance Manual is 10370-10336. OPTIONS The following options are available. Option 1, Rack Mounting. Rack mount kit containing a set of track slides (90°...
Page 17 GENERAL PERFORMANCE INFORMATION SPECIFICATIONS Option 14, Rack Mounting without Chassis Slides. Modifies rack mounting hardware to install unit in a console that has mount- ing shelves. Includes mounting ears and front panel handles. Option 15A, High Power Output. Adds high-power RF compo- nents to the instrument providing increased RF output power in the 2–20 GHz frequency range.
Page 18 External Mixer: Option 91 (26.5 to 40 GHz) Option 92 (40 to 60 GHz) Option 93 (60 to 90 GHz) Power Meter, Range: –30 to +20 dBm Anritsu Model ML2437A or ML2438A, with (1mW to 100 mW) with Power Power Sensors: Sensors MA2474A (0.01 to 40 GHz)
Page 19 Chapter 2 Installation Table of Contents INTRODUCTION ....2-3 INITIAL INSPECTION ....2-3 PREPARATION FOR USE .
Page 20 An- ritsu Customer Service. If either the shipping container is damaged or the cushioning material shows signs of stress, notify the carrier as well as Anritsu. Keep the shipping materials for the carrier's inspec- tion. 680XXC OM...
Page 21 PREPARATION INSTALLATION FOR USE PREPARATION FOR USE Preparation for use consists of (1) checking that the rear panel line voltage selector switch is set for the correct line voltage and (2) con- necting the CW generator to the power source. The following para- graphs provide these procedures along with information about power requirements, warmup times, and the operating environment.
Page 22 PREPARATION INSTALLATION FOR USE Line Fuse Line Voltage Selector Switch GPIB Connector Figure 2-1. CW Generator Rear Panel showing Power Connection Standby Whenever the CW generator is not being used it Operation should be left connected to the power source and LEVEL placed in standby.
Page 23 PREPARATION INSTALLATION FOR USE Warmup Time From Standby–When placing the 680XXC in op- eration from stand-by, allow 30 minutes warmup to assure stable operation. From a Cold Start (0°C)–The CW generator re- quires approximately 120 hours (5 days) of warm up to achieve specified frequency stability with aging.
Page 24 CW generator and the controller. This interconnection is via a standard GPIB cable. The Anritsu Part number for such a cable is 2000-1, -2, or -4 (1, 2, or 4 meters in length). Setting the The default GPIB address is 5.
Page 25 GPIB SETUP AND INSTALLATION INTERCONNECTION Now press the menu soft-key Config . The System Configuration Menu (shown below) is displayed. To go to the Configure GPIB menu from this menu, press the menu soft-key GPIB . The Configure GPIB Menu (shown below) is displayed. Press the menu soft-key GPIB Address to change the current GPIB address of the CW generator.
Page 26 GPIB SETUP AND INSTALLATION INTERCONNECTION Selecting the Data is delimited on the GPIB by either the carriage Line return (CR) ASCII character or both the carriage re- Terminator turn and line feed (CR/LF) ASCII characters. Which character is used depends upon the requirements of the system controller.
Page 27 RACK MOUNTING KIT INSTALLATION INSTALLATION RACK MOUNTING KIT The rack mounting kit (Option 1) contains a set of track slides (90° tilt INSTALLATION capability), mounting ears, and front panel handles for mounting the CW generator in a standard equipment rack. The following procedure provides instructions for installing the rack mounting hardware on to the instrument.
Page 28 (Anritsu P/N 2000-560) to avoid damage to the instrument. Step 7 Insert two green-headed screws through the holes near the rear of the slide assem- bly and into the metric tapped holes in the side of the instrument.
Page 29 RACK MOUNTING KIT INSTALLATION INSTALLATION Step 10 Place the right side inner slide assembly onto the instrument case with the handle towards the front of the instrument. Step 11 Insert two green-headed screws through the holes in the slide assembly behind the handle and into the metric tapped holes in the side of the instrument.
Page 30 Seal the carton by using either shipping tape or an industrial stapler. Address the Container. If the instrument is being returned to Anritsu for service, mark the address of the appropriate Anritsu service center (Table 2-1) and your return address on the carton in one or more prominent locations.
Page 31 ANRITSU INSTALLATION SERVICE CENTERS Table 2-1. ANRITSU Service Centers UNITED STATES FRANCE JAPAN ANRITSU COMPANY ANRITSU S.A ANRITSU CUSTOMER SERVICE LTD. 490 Jarvis Drive 9 Avenue du Quebec 1800 Onna Atsugi-shi Morgan Hill, CA 95037-2809 Zone de Courtaboeuf Kanagawa-Prf. 243 Japan...
Page 32 Chapter 3 Local (Front Panel) Operation Table of Contents INTRODUCTION ....3-5 FRONT PANEL LAYOUT....3-6 Line Key .
Page 33 Table of Contents (Continued) SWEEP FREQUENCY OPERATION ..3-26 Step Sweep Mode ....3-26 Selecting Step Sweep Mode ... 3-26 Setting Step Size, Dwell Time, and Sweep Time .
Page 34 Table of Contents (Continued) 3-12 SYSTEM CONFIGURATION ... . 3-72 Configuring the Front Panel ..3-73 Configuring the Rear Panel ... 3-74 Configuring the RF .
Page 35 Chapter 3 Local (Front Panel) Operation INTRODUCTION This chapter provides information and instructions on operating the Series 680XXC Synthesized CW Generator using the front panel con- trols. It contains the following: Illustrations and diagrams of the front panel, data display area, and data entry area that identify and describe all front panel controls, inputs, and outputs.
Page 36 LOCAL (FRONT FRONT PANEL PANEL) OPERATION LAYOUT FRONT PANEL LAYOUT The 680XXC front panel is divided into two main areas—the data dis- play area and the data entry area. The following paragraphs provide a brief description of the front panel controls, inputs, outputs, and data display and data entry areas as shown in Figure 3-1.
Page 37 LOCAL (FRONT FRONT PANEL PANEL) OPERATION LAYOUT Data Entry The data entry area consists of data entry keys and Area controls that provide for (1) changing values for each 680XXC parameter, and (2) terminating the value entry and assigning the appropriate units (GHz, MHz, dBm, etc.).
Page 38 LOCAL (FRONT DATA DISPLAY PANEL) OPERATION AREA DATA DISPLAY AREA The data display area consists of the data display and the surrounding menu keys. The data display is a dot matrix liquid crystal display (LCD) that provides 16 lines of 40 characters each. Information is presented on the LCD in the form of menu displays.
Page 39 LOCAL (FRONT DATA DISPLAY PANEL) OPERATION AREA Menu Display The menu display is divided into specific areas that Format show the frequency and power level information for the current CW generator setup. Menu labels for the current menu's soft-keys appear along the bottom and right side of the display.
Page 40 LOCAL (FRONT DATA DISPLAY PANEL) OPERATION AREA Window Display A window display that overlays a portion of the cur- rent menu display is used to (1) show the parameter being edited; (2) display selection lists of preset fre- quencies, power levels, markers, etc.; (3) show the system configuration choices and current selections;...
Page 41 LOCAL (FRONT DATA DISPLAY PANEL) OPERATION AREA SYSTEM—This menu provides you with ac- cess to sub-menus that let you (1) reset the in- strument to factory-selected default values; (2) configure the front panel, rear panel, RF, and GPIB; (3) set incremental sizes for editing fre- quency, power level, and time parameters;...
Page 42 LOCAL (FRONT DATA DISPLAY PANEL) OPERATION AREA DATA ENTRY AREA The value of a selected 680XXC parameter can be changed using the rotary data knob and/or keys of the data entry area. Each element of the data entry area is identified in Figure 3-3 and described in the following paragraphs.
Page 43 LOCAL (FRONT DATA ENTRY PANEL) OPERATION AREA Rotary Data Knob The rotary data knob can be used to change the value of a parameter that is open for editing. The cursor is moved under the open parameter using the < and > pads of the cursor control key. Then, by slowly turning the knob clockwise or counter- clockwise the value of the parameter is increased or decreased by the unit size.
Page 44 LOCAL (FRONT INSTRUMENT PANEL) OPERATION START-UP INSTRUMENT START-UP Now that you have familiarized yourself with the layout of the CW generator's front panel controls and data display, you are ready to be- gin operating the instrument. Begin by powering it up. Powering Up Connect the 680XXC to an ac power source by fol- the 680XXC...
Page 45 LOCAL (FRONT INSTRUMENT PANEL) OPERATION START-UP Self-Testing The 680XXC firmware includes internal diagnostics the 680XXC that self-test the instrument. These self-test diag- nostics perform a brief go/no-go test of most of the PCBs and other internal assemblies. If the CW gen- erator fails self-test, an error message is displayed on the data display.
Page 46 LOCAL (FRONT RESET (DEFAULT) PANEL) OPERATION PARAMETERS Table 3-1. Reset (Default) Paramenters (1 of 2) 680XXC FREQUENCY PARAMETERS (GHz) MODEL NUMBER M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 68017C 3.5 2.0 8.4 2.0 5.0 8.0 8.4 8.4 8.4 8.4 3.5 2.0 8.4 2.0 5.0 8.0 8.4 8.4 8.4 8.4 1.0 68037C 3.5 2.0 20.0 2.0 5.0 8.0 11.0 14.0 17.0 20.0 3.5 2.0 20.0 2.0 5.0 8.0 11.0 14.0 17.0 20.0 1.0 68047C...
Page 47 LOCAL (FRONT RESET (DEFAULT) PANEL) OPERATION PARAMETERS Table 3-1. Reset (Default) Paramenters (2 of 2) STEP SWEEP LEVEL SWEEP 680XXC SWEEP LEVEL MODEL TIME NUMBER OF NUMBER OF OFFSET NUMBER DWELL TIME DWELL TIME STEPS STEPS 68017C 50 ms 1 ms 50 ms 0.0 dB 68037C...
Page 48 LOCAL (FRONT ENTERING PANEL) OPERATION DATA ENTERING DATA Before proceeding to the various modes of CW generator operation, you need to know how to enter data from the front panel. Entering data refers to changing a parameter's value by editing its current value or entering a new value to replace the current value.
Page 49 LOCAL (FRONT ENTERING PANEL) OPERATION DATA Editing the To change the current value of a parameter by edit- Current Value ing, you can use either the cursor control key or the rotary data knob. Cursor Control Using the Cursor Control Key Using the <...
Page 50 LOCAL (FRONT ENTERING PANEL) OPERATION DATA Entering a To change the current value of a parameter by en- New Value tering a new value for the parameter, use the data entry keypad and termination keys. As soon as you press one of the keys on the data en- try keypad, the current parameter display clears for entry of a new value.
Page 51 LOCAL (FRONT CW FREQUENCY PANEL) OPERATION OPERATION CW FREQUENCY One of the CW generator's major functions is to produce discrete CW OPERATION frequencies across the frequency range of the instrument. The follow- ing paragraphs describe how to place the 680XXC in the CW fre- quency mode, select a CW frequency and power level for output, and activate the CW ramp.
Page 52 LOCAL (FRONT CW FREQUENCY PANEL) OPERATION OPERATION Selecting a There are several ways to select a CW frequency for output. You can (1) edit the current frequency, (2) Frequency enter a new frequency, or (3) select one of the 20 pre- set frequency parameters.
Page 53 LOCAL (FRONT CW FREQUENCY PANEL) OPERATION OPERATION Frequency List–To go to the Frequency List Menu (below), press Freqs List . This menu lets you tag, edit, or output a frequency from the list. Use the cursor control key to select a frequency from the frequency list.
Page 54 LOCAL (FRONT CW FREQUENCY PANEL) OPERATION OPERATION Scanning Tagged Frequencies–To go to the Tagged Frequencies Menu (below) from the CW Fre- quency Control menu, press Tag Freq Menu . This menu lets you select the tagged frequencies for output using the Scan Up and Scan Dn keys. Return to the CW Frequency Control Menu display by pressing Previous Menu .
Page 55 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION CW Ramp When active, the 680XXC's CW ramp provides a re- petitive 0V to 10V ramp output to the rear panel HORIZ OUT BNC connector and AUX I/O connector. The CW ramp is used to drive a scalar analyzer dis- play.
Page 56 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION SWEEP FREQUENCY The CW generator can generate broad (full range) and narrow band OPERATION sweeps across the frequency range of the instrument. The 680XXC has three sweep frequency modes—step sweep, manual sweep, and list sweep.
Page 57 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION This menu lets you perform the following: Select a sweep range (edit the sweep start and stop frequency parameters). Go to the sweep ramp menu (set the dwell- time-per-step, the step size or number of steps, set the sweep time, select log or linear sweep, and select a sweep trigger).
Page 58 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION To go to the Step Sweep Ramp Menu (below) from the Step Sweep menu, press Sweep Ramp . This menu lets you set the dwell time, the step size in linear step sweep, the number of steps, and go to the additional step sweep ramp menu (to set the sweep time, select log or linear sweep, and select a sweep trigger).
Page 59 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Additional Step Sweep Ramp Menu When you press More , the Additional Step Sweep Ramp Menu (below) is displayed. This menu lets you set the sweep time, select loga- rithmic or linear step sweep, and go to the trigger menu.
Page 60 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Selecting a There are three modes of sweep triggering for step Sweep freqency sweep–automatic, external, and single. The Trigger sweep trigger is selectable from the trigger menu. The following is a description of each mode. Auto (Automatic)–The sweep continually sweeps from its start frequency to its stop fre- quency with optimal retrace time.
Page 61 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Manual In manual sweep frequency mode, the output fre- Sweep Mode quency can be manually tuned in phase-locked steps between the selected start and stop frequencies us- ing the rotary data knob. As the knob is turned, the current output frequency is displayed on the data display as Fm.
Page 62 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Selecting a Selecting a sweep range involves choosing a start Sweep Range and a stop frequency for the frequency sweep. The sweep range selection process is identical for both the step and manual sweep frequency modes. There are several ways you can select a sweep range, in- cluding: Editing the current start and stop frequency...
Page 63 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Selecting a Preset Sweep Range There are four preset sweep range parameters, se- lectable in the step sweep and manual sweep fre- quency modes. The following is a description of each preset sweep range. F1-F2–provides a frequency sweep between the start frequency, F1, and the stop frequency, F2.
Page 64 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Setting a Preset Sweep Range–At the menu, se- lect the sweep range (F1-F2, F3-F4, F5-dF, or F6-dF) that you wish to set. The menu then displays the current frequency parameters for the selected sweep range.
Page 65 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Frequency The CW generator provides up to 20 independent, Markers pre-settable markers, F0-F9 and M0-M9, that can be used in the step sweep frequency mode for pre- cise frequency identification. Marker frequency ac- curacy is the same as sweep frequency accuracy.
Page 66 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Use the cursor control key to select a frequency pa- rameter from the marker list. The selected fre- quency parameter is highlighted in reverse video and displayed in full below the marker list. Editing a Marker List Frequency If you want to change a selected marker list fre- quency parameter's value, press Edit to open the...
Page 67 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Selecting In alternate sweep frequency mode, the CW genera- Alternate tor's output frequency sweeps alternately between Sweep Mode any two sweep ranges in step sweep. To select the alternate sweep mode, start with the Step Sweep Menu display (below).
Page 68 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Now, press Previous Menu to return to the Step Sweep Menu display. Notice the changes to the Step Sweep Menu display (below). These changes indicate that the alternate sweep frequency mode is active. Now, press Alt Swp Menu to return to the Alternate Sweep menu.
Page 69 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION When you are done selecting the alternate sweep range, press Previous Menu to return to the Alter- nate Sweep Menu display. Selecting an Alternate Sweep Power Level To go to the Alternate Level menu (below) from the Alternate Sweep menu, press Alt Level .
Page 70 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION List Sweep In list sweep frequency mode, the output is a step Mode sweep of up to 2000 phase-locked, non-sequential frequencies. Each frequency can have a different power level setting. The list index (0 to 1999) identi- fies each frequency/power level set in the list.
Page 71 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Selecting List To place the 680XXC is list sweep frequency mode, Sweep Mode press the main menu key CW/SWEEP SELECT At the resulting menu display, press List . The List Sweep Menu (below) is displayed. This menu lets you perform the following: Go to the Edit List menus (edit list index fre- quency and power level parameters and insert...
Page 72 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Performing List Calculations The PreCalc List soft-key initiates a process that examines every index in the list and performs all the calculations necessary to set the frequency and power levels. The soft-key does not have to be pressed every time the list changes.
Page 73 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION List Frequency Edit–to go to the List Frequency Edit Menu (below), press Edit Freq . This menu lets you scroll through the list frequencies and edit se- lected frequencies. The menu displays a total of 20 frequencies. The in- dex range of the displayed frequencies is shown at the top of the list.
Page 74 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Press Edit to edit the highlighted power level or en- ter a new power level. Press Page Up to scroll the displayed power levels to the next 10 in the list. Press Page Down to scroll the displayed power levels to the previous 10 in the list.
Page 75 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Copying Data from the CW Menu An easy method of entering frequency and power level information into the current list index is to copy the data from the CW menu. First, go to the main List Sweep menu and press the List Index soft-key to open the list index parameter.
Page 76 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION Press Start Index to open the list sweep start index parameter. Press Stop Index to open the list sweep stop index parameter. Press Dwell Time to open the dwell-time-per-step 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 using the key pad and appropriate termination key.
Page 77 LOCAL (FRONT SWEEP FREQUENCY PANEL) OPERATION OPERATION To go to the List Sweep Trigger Menu (below) from the Sweep menu, press Trigger . To select a sweep trigger mode, press its menu soft- key. A message showing the trigger mode selected appears on the right side of the frequency title bar.
Page 78 LOCAL (FRONT FIXED POWER PANEL) OPERATION LEVEL OPERATION FIXED POWER LEVEL The CW generator provides leveled output power over a maximum OPERATION range of up to 33 dB (up to 149 dB with option 2) for CW and sweep frequency operations. Instruments with option 15A provide leveled output power over a maximum range of up to 27 dB (up to 141 dB with option 2).
Page 79 LOCAL (FRONT FIXED POWER PANEL) OPERATION LEVEL OPERATION and appropriate terminator key. To close the open NOTE power level parameter, press Edit L1 or make an- When Linear power level units are other menu selection. selected, use the following termina- tor keys for power level data Selecting a Preset Power Level entries:...
Page 80 LOCAL (FRONT FIXED POWER PANEL) OPERATION LEVEL OPERATION Use the cursor control key to select a power level from the level list. The selected power level is high- lighted in reverse video and displayed in full below the level list. Press Tag to mark a selected power level (place an L in front of it).
Page 81 LOCAL (FRONT FIXED POWER PANEL) OPERATION LEVEL OPERATION Level Offset Level offset lets you compensate for a device on the CW generator's output that alters the RF output power level at the point of interest. For example, the power level at the test device may be less or more than the displayed power level because of the loss through an external transmission line or the gain of an amplifier located between the 680XXC RF output...
Page 82 LOCAL (FRONT POWER LEVEL PANEL) OPERATION SWEEP OPERATION 3-10 POWER LEVEL SWEEP The 680XXC provides leveled output power sweeps at CW frequencies OPERATION and in conjunction with step frequency sweeps. Power level sweeps can be from a high level to a low level or vice versa. Power level sweeps can be selected to be linear or logarithmic.
Page 83 LOCAL (FRONT POWER LEVEL PANEL) OPERATION SWEEP OPERATION Setting CW There are two ways to set the size of each step of the Power Sweep CW power sweep—set the step size or set the Step Size and number of steps. The step size range is 0.01 dB Dwell Time (Log) or 0.001 mV (Linear) to the full power range of the instrument;...
Page 84 LOCAL (FRONT POWER LEVEL PANEL) OPERATION SWEEP OPERATION Selecting a There are three modes of triggering provided for the CW Power CW power sweep—automatic, external, and single. Sweep The sweep trigger is selectable from the CW Level Trigger Sweep Trigger menu. The following is a description of each trigger mode.
Page 85 LOCAL (FRONT POWER LEVEL PANEL) OPERATION SWEEP OPERATION Selecting a Selecting a power level sweep range consists of Power Level choosing a start and stop level for the power level Sweep Range sweep. The power level sweep range selection pro- cess is identical for all power level sweep modes—...
Page 86 LOCAL (FRONT POWER LEVEL PANEL) OPERATION SWEEP OPERATION Selecting a Preset Power Level Sweep Range There are five preset power level sweep range pa- rameters selectable in the power level sweep modes. These preset power level sweep range parameters are L1-L2, L3-L4, L5-L6, L7-L8, and L9-L0. To select one of the preset power level sweep ranges from a Level Sweep menu, press the main menu key LEVEL...
Page 87 LOCAL (FRONT POWER LEVEL PANEL) OPERATION SWEEP OPERATION Selecting a In step sweep frequency/step power mode, a power Sweep Fre- level step occurs after each frequency sweep. The quency / Step power level remains constant for the length of time Power Mode required to complete each frequency sweep.
Page 88 LOCAL (FRONT POWER LEVEL PANEL) OPERATION SWEEP OPERATION Setting Power There are two ways to set the step size of the power Level Step level step that occurs after each frequency Size sweep–set the step size or set the number of steps. The step size range is 0.01 dB(Log) or 0.001 mV (Linear) to the full power range of the CW generator;...
Page 89 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS 3-11 LEVELING The 680XXC generates leveled output power over a maximum range of OPERATIONS up to 33 dB (up to 149 dB with option 2). Instruments with option 15A provide leveled output power over a maximum range of up to 27 dB (up to 141 dB with option 2).
Page 90 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS The ALC Mode menu lets you perform the following: Go to the leveling menu (select the ALC mode of operation). Go to the attenuation menu (decouple the attenuator, if equipped, from the ALC system and set the power level and attenuation).
Page 91 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS Before going to the Leveling menu from the ALC Mode menu, select whether the external ALC signal is to be connected to the front- or rear-panel EXT ALC IN connector. At the ALC Mode menu, press Ext ALC Front to se- lect front panel input, or Ext ALC Rear to select rear panel input.
Page 92 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS At the Leveling menu, pressing either Internal or Fixed Gain will turn off external leveling. Press Previous Menu to return to the ALC Mode Menu display. Fixed Gain In the fixed gain mode, the ALC is disabled. The RF Level DAC and step attenuator (if installed) are used to control the relative power level.
Page 93 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS Attenuator In 680XXCs equipped with option 2 step attenua- Decoupling tors, the ALC and attenuator work in conjunction to provide leveled output power down to –140 dBm. In the normal (coupled) leveling mode, when the de- sired power level is set, the correct combination of ALC level and attenuator setting is determined by the instrument firmware.
Page 94 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS ALC Power The ALC power slope function lets you compensate Slope for system, cable, and waveguide variations due to changes in frequency, by linearly increasing or de- creasing power output as the frequency increases. As shown in the following illustration, the power slope function provides you with the ability to set both the power slope and the pivot point.
Page 95 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS Press Slope On/Off to activate the ALC power slope function. Press Edit Pivot to open the pivot point frequency parameter for editing. Edit the current frequency using the cursor control key or rotary data knob or enter a new value using the keypad and appropriate termination key.
Page 96 Up to five user level flatness correction power-offset tables from 2 to 801 frequency points/table can be created and stored in 680XXC memory for recall. The GPIB power meters supported are the Anritsu Model ML2437A, ML2438A, and ML4803A and the Hewlett-Packard Models 437B, 438A, and 70100A.
Page 97 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS Equipment Setup To create a power-offset table for user level flatness correction, connect the equipment (shown in Figure 3-4) as follows: Step 1 Using a GPIB cable, connect the Power Meter to the 680XXC. Step 2 Calibrate the Power Meter with the Power Sensor.
Page 98 The new GPIB address will appear on the display. Press Pwr Mtr Select to select the power meter model being used. (Supported power meters are 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.
Page 99 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS Place the CW generator in a fixed power level mode by pressing the main menu key LEVEL/ALC SELECT At the resulting menu display, press Level . The 680XXC is now in fixed (non-swept) power level mode.
Page 100 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS range is 2 to 801.) When you have finished setting the open number-of-points parameter, close it by pressing Edit Points again or by making another menu selection. Now, press Start Cal to begin automatically taking power level correction information at each frequency point.
Page 101 LOCAL (FRONT LEVELING PANEL) OPERATION OPERATIONS Erasing the Power-Offset Tables from Memory The power-offset tables are stored in non-volatile memory. A master reset is required to erase the con- tents of the tables and reprogram them with default data. To perform a master reset, proceed as follows: NOTE Step 1 With the 680XXC in standby, press and...
Page 102 LOCAL (FRONT SYSTEM PANEL) OPERATION CONFIGURATION 3-12 SYSTEM The system configuration function provides menus that let you set or CONFIGURATION select instrument configuration items; for example, display intensity, polarity of blanking and video marker outputs, RF on or off during re- trace or between steps, frequency scaling, GPIB operating parameters, external interface language, and increment sizes for frequency, power level, and time parameters.
Page 103 LOCAL (FRONT SYSTEM PANEL) OPERATION CONFIGURATION Configuring Configuring the front panel of the CW generator the Front involves adjusting the intensity level of the data Panel display for ease of viewing. To go to the Configure Front Panel menu from the System Configuration menu, press Front Panel .
Page 104 LOCAL (FRONT SYSTEM PANEL) OPERATION CONFIGURATION Configuring Configuring the rear panel of the CW generator the Rear consists of selecting the polarity of the retrace Panel blanking, bandswitch blanking, retrace penlift, and video marker outputs. To go to the Configure Rear Panel Menu (below) from the System Configuration menu, press Rear Panel .
Page 105 LOCAL (FRONT SYSTEM PANEL) OPERATION CONFIGURATION Configuring Configuring the RF of the 680XXC involves the fol- the RF lowing: Selecting whether the RF should be on or off during retrace. Selecting whether the RF should be on or off during frequency switching in CW, step sweep, and list sweep modes.
Page 106 LOCAL (FRONT SYSTEM PANEL) OPERATION CONFIGURATION Additional Configure RF Menu When you press More , the Additional Configure RF Menu (below) is displayed. Press Reset State to select RF On or Off at reset. The display will reflect your selection. Frequency Scaling –...
Page 107 LOCAL (FRONT SYSTEM PANEL) OPERATION CONFIGURATION Configuring The GPIB configuration menus let you perform the the GPIB following: Set the GPIB address and select the GPIB line terminator for the CW generator. Select the model and set the GPIB address for the power meter that is used to create a user level flatness correction power-offset table.
Page 108 The new GPIB address will appear on the display. Press Pwr Mtr Select to select the power meter model being used. (Supported power meters are the Anritsu ML2437A, ML2438A, and ML4803A and Hewlett-Packard 437B, 438A, and 70100A.) Press Native/SCPI to select the external interface language to be used for remote operation of the 680XXC.
Page 109 LOCAL (FRONT SYSTEM PANEL) OPERATION CONFIGURATION Setting The Increment menu lets you set the incremental Increment size for editing frequency, power level, and time pa- Sizes rameters. When the increment mode is selected on, these parameter values will increase or decrease by the set amount each time the Ù...
Page 110 LOCAL (FRONT SAVING/RECALLING PANEL) OPERATION INSTRUMENT SETUPS 3-13 SAVING/RECALLING The 680XXC offers the capability to store up to ten complete front INSTRUMENT SETUPS panel setups. The setups are numbered 0 through 9. The following paragraphs describe how to save and recall front panel setups. Saving Once you have decided that an 680XXC setup Setups...
Page 111 LOCAL (FRONT SAVING/RECALLING PANEL) OPERATION INSTRUMENT SETUPS Erasing The front panel setups are stored in non-volatile Stored Setups memory. A master reset is required to erase the con- tents of the setups and reprogram them with default data. To perform a master reset, proceed as follows: NOTE Step 1 With the 680XXC in standby, press and...
Page 112 LOCAL (FRONT SECURE PANEL) OPERATION OPERATION 3-14 SECURE OPERATION The 680XXC can be operated in a secure mode of operation. In this se- cure mode, the display of all frequency and power level parameters is disabled during both local (front panel) and remote (GPIB) operations. The instrument will continue to function normally in all other re- spects.
Page 113 LOCAL (FRONT REFERENCE PANEL) OPERATION OSCILLATOR CALIBRATION 3-15 REFERENCE The reference oscillator calibration function lets you calibrate the in- OSCILLATOR ternal 100 MHz crystal reference oscillator of the 680XXC using an ex- CALIBRATION ternal 10 MHz, 0 to +10 dBm reference signal. NOTE Before beginning calibration, always let the 680XXC warm up for a minimum of...
Page 114 LOCAL (FRONT REFERENCE PANEL) OPERATION OSCILLATOR CALIBRATION 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 terminator key. The Calibration Status Menu display changes to indicate calibration is in progress.
Page 115 Chapter 4 Local Operation–Menu Maps Table of Contents INTRODUCTION ....4-3 MENU MAP DESCRIPTION ... . . 4-3 www.valuetronics.com...
Page 116 Chapter 4 Local Operation–Menu Maps INTRODUCTION This chapter provides menu maps that support the 680XXC front panel operating instructions found in Chapter 3. It includes menu maps for all of the frequency and power level modes of operation. In addition, a menu map for system configuration is also provided. MENU MAP A menu map shows the menu key selections and instrument menu dis- DESCRIPTION...
Page 117 LOCAL OPERATION SAMPLE –MENU MAPS MENU MAP Figure 4-1. Sample Menu Map (Annotated) 680XXC OM www.valuetronics.com...
Page 118 LOCAL OPERATION –MENU MAPS FREQUENCY MODE NOTES Refer to Chapter 3, paragraph 3-7 for CW Frequency Mode operating instructions. Refer to Chapter 7, paragraph 7-2 for Master-Slave operating instruc- tions. Figure 4-2. CW Frequency Mode Menu Map 680XXC OM www.valuetronics.com...
Page 119 LOCAL OPERATION STEP SWEEP –MENU MAPS FREQUENCY MODE NOTE Refer to Chapter 3, paragraph 3-8 for Step Sweep Frequency Mode operating instructions. Figure 4-3. Step Sweep Frequency Mode Menu Map 680XXC OM www.valuetronics.com...
Page 120 LOCAL OPERATION MANUAL SWEEP –MENU MAPS FREQUENCY MODE NOTE Refer to Chapter 3, paragraph 3-8 for Manual Sweep Frequency Mode operating instructions. Figure 4-4. Manual Sweep Frequency Mode Menu Map 680XXC OM www.valuetronics.com...
Page 121 LOCAL OPERATION LIST SWEEP –MENU MAPS FREQUENCY MODE NOTE Refer to Chapter 3, paragraph 3-8 for List Sweep Frequency Mode operating instructions. Figure 4-5. List Sweep Frequency Mode Menu Map 680XXC OM www.valuetronics.com...
Page 122 LOCAL OPERATION FIXED POWER –MENU MAPS LEVEL MODE NOTE Refer to Chapter 3, paragraph 3-9 for Fixed Power Level Mode operating in- structions. Figure 4-6. Fixed Power Level Mode Menu Map 4-10 680XXC OM www.valuetronics.com...
Page 123 LOCAL OPERATION CW POWER –MENU MAPS SWEEP MODE NOTE Refer to Chapter 3, paragraph 3-10 for CW Power Sweep Mode operating instructions. Figure 4-7. CW Power Sweep Mode Menu 680XXC OM 4-11 www.valuetronics.com...
Page 124 LOCAL OPERATION SWEEP FREQUENCY/ –MENU MAPS STEP POWER MODE NOTE Refer to Chapter 3, paragraph 3-10 for Sweep Frequency/Step Power Mode operating instructions. Figure 4-8. Sweep Frequency/Step Power Mode Menu Map 4-12 680XXC OM www.valuetronics.com...
Page 125 LOCAL OPERATION LEVELING –MENU MAPS MODES Selects Internal ALC (Default Mode) CW/SWEEP SELECT Selects External ALC FREQUENCY CONTROL (External Detector Input) Selects Front Panel LEVEL/ALC Selects External ALC SELECT External ALC Input Power Meter Input LEVEL CONTROL Selects Rear Panel External ALC Input Selects ALC Off SYSTEM...
Page 126 LOCAL OPERATION SYSTEM –MENU MAPS CONFIGURATION C W / S W E E P B r i g h t e n s T h e D i s p l a y S E L E C T . R E Q U E N C Y D i m s T h e D i s p l a y C O N T R O L L E V E L / A L C...
Page 127 Chapter 5 Operation Verification Table of Contents INTRODUCTION ....5-3 TEST EQUIPMENT....5-3 TEST RECORDS .
Page 128 External Mixer: Option 91 (26.5 to 40 GHz) Option 92 (40 to 60 GHz) Option 93 (60 to 90 GHz) Power Meter, Range: –30 to +20 dBm Anritsu Model ML2437A or ML2438A, with (1mW to 100 mW) with Power Power Sensors: Sensors MA2474A (0.01 to 40 GHz)
Page 129 OPERATION INITIAL 680XXC VERIFICATION CHECKOUT INITIAL 680XXC Before starting the operation verification tests in this chapter, perform CHECKOUT an initial checkout of the 680XXC to be tested. This initial checkout consists of applying power to the CW generator, verifying that it passes self-test, and resetting it to the factory default parameters.
Page 130 OPERATION CW FREQUENCY VERIFICATION ACCURACY TEST CW FREQUENCY The following test verifies that the CW frequency output of the ACCURACY TEST 680XXC is within accuracy specifications. Table 5-2, beginning on page 5-7, contains test records that you can copy and use to record test results for this test.
Page 131 OPERATION CW FREQUENCY VERIFICATION ACCURACY TEST Test The following procedure tests both the coarse and Procedure fine loops to verify the accuracy of the CW frequency output. Step 1 Set up the 680XXC as follows: a. Reset the instrument by pressing SYSTEM , then Reset .
Page 132 OPERATION CW FREQUENCY VERIFICATION ACCURACY TEST Table 5-2A. CW Frequency Accuracy Test Record (for Standard Models) (1 of 3) Model 680 _ _ C Serial No. ____________________ Date ___________ 68017C 68037C / 68047C 1.000 000 000* _____________________ 2.000 000 000* _____________________ 2.000 000 000 _____________________...
Page 133 OPERATION CW FREQUENCY VERIFICATION ACCURACY TEST Table 5-2A. CW Frequency Accuracy Test Record (for Standard Models) (2 of 3) Model 680 _ _ C Serial No. ____________________ Date ___________ 68067C 68077C 2.000 000 000* _____________________ 2.000 000 000* _____________________ 5.000 000 000 _____________________ 6.000 000 000 _____________________...
Page 134 OPERATION CW FREQUENCY VERIFICATION ACCURACY TEST Table 5-2A. CW Frequency Accuracy Test Record (for Standard Models) (3 of 3) Model 680 _ _ C Serial No. ____________________ Date ___________ 68087C 68097C 2.000 000 000* _____________________ 2.000 000 000* _____________________ 6.000 000 000 _____________________ 6.000 000 000 _____________________...
Page 135 OPERATION CW FREQUENCY VERIFICATION ACCURACY TEST Table 5-2B. CW Frequency Accuracy Test Record (for Models with Option 11) (1 of 3) Model 680 _ _ C Serial No. ____________________ Date ___________ 68017C 68037C / 68047C 1.000 000 000 0* _____________________ 2.000 000 000 0* _____________________ 2.000 000 000 0...
Page 136 OPERATION CW FREQUENCY VERIFICATION ACCURACY TEST Figure 5-2B. CW Frequency Accuracy Test Record (for Models with Option 11) (2 of 3) Model 680 _ _ C Serial No. ____________________ Date ___________ 68067C 68077C 2.000 000 000 0* _____________________ 2.000 000 000 0* _____________________ 5.000 000 000 0 _____________________...
Page 137 OPERATION CW FREQUENCY VERIFICATION ACCURACY TEST Table 5-2B. CW Frequency Accuracy Test Record (for Models with Option 11) (3 of 3) Model 680 _ _ C Serial No. ____________________ Date ___________ 68087C 68097C 2.000 000 000 0* _____________________ 2.000 000 000 0* _____________________ 6.000 000 000 0 _____________________...
Page 138 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS POWER LEVEL These tests verify that the power level accuracy and flatness of the ACCURACY AND 680XXC meet specifications. Table 5-3, beginning on page 5-17, con- FLATNESS TESTS tains test records that you can copy and use to record test results for these tests.
Page 139 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Power Level Power level accuracy is checked by stepping the Accuracy Test power down in 1 dB increments from its maximum Procedure rated power level. Step 1 Set up the 680XXC as follows: a.
Page 140 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Power Level Power level flatness is checked by measuring the Flatness Test power level variation during a full band step sweep. Procedure Step 1 Set up the 680XXC as follows for a step sweep power level flatness test: a.
Page 141 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS g. Now, return to the Step Sweep menu by pressing the main menu key CW/SWEEP SELECT h. At the Step Sweep menu, press Sweep Ramp to go to the Step Sweep Ramp Menu. i.
Page 142 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (1 of 27) Model 68017C Serial No. ____________________ Date ___________ Model 68017C (without Option 2 Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz) (CW Frequency = 5.0 GHz) Set Power...
Page 143 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (2 of 27) Model 68017C Serial No. ____________________ Date ___________ Model 68017C (with Option 2A Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz) (CW Frequency = 5.0 GHz) Set Power...
Page 144 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (3 of 27) Model 68017C Serial No. ____________________ Date ___________ Model 68017C (with Option 2E Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz) (CW Frequency = 5.0 GHz) Set Power...
Page 145 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (4 of 27) Model 68017C w/Option 15A Serial No. ____________________ Date ___________ Model 68017C with Option 15A High Power (without Option 2 Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz)
Page 146 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (5 of 27) Model 68017C w/Option 15A Serial No. ____________________ Date ___________ Model 68017C with Option 15A High Power (with Option 2A Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz)
Page 147 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (6 of 27) Model 68017C w/Option 15A Serial No. ____________________ Date ___________ Model 68017C with Option 15A High Power (with Option 2E Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz)
Page 148 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (7 of 27) Model 68037C Serial No. ____________________ Date ___________ Model 68037C (without Option 2 Step Attenuator) Power Level Accuracy * (CW Frequency = 5.0 GHz) Set Power Measured Power +13 dBm...
Page 149 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (8 of 27) Model 68037C Serial No. ____________________ Date ___________ Model 68037C (with Option 2A Step Attenuator) Power Level Accuracy * (CW Frequency = 5.0 GHz) Set Power Measured Power +11 dBm...
Page 150 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (9 of 27) Model 68037C Serial No. ____________________ Date ___________ Model 68037C (with Option 2F Step Attenuator) Power Level Accuracy * (CW Frequency = 5.0 GHz) Set Power Measured Power + 3 dBm...
Page 151 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (10 of 27) Model 68037C w/Option 15A Serial No. ____________________ Date ___________ Model 68037C with Option 15A High Power (without Option 2 Step Attenuator) Power Level Accuracy * (CW Frequency = 5.0 GHz) Set Power...
Page 152 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (11 of 27) Model 68037C w/Option 15A Serial No. ____________________ Date ___________ Model 68037C with Option 15A High Power (with Option 2A Step Attenuator) Power Level Accuracy * (CW Frequency = 5.0 GHz) Set Power...
Page 153 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (12 of 27) Model 68037C w/Option 15A Serial No. ____________________ Date ___________ Model 68037C with Option 15A High Power (with Option 2F Step Attenuator) Power Level Accuracy * (CW Frequency = 5.0 GHz) Set Power...
Page 154 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (13 of 27) Model 68047C Serial No. ____________________ Date ___________ Model 68047C (without Option 2 Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz) (CW Frequency = 5.0 GHz) Set Power...
Page 155 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (14 of 27) Model 68047C Serial No. ____________________ Date ___________ Model 68047C (with Option 2A Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz) (CW Frequency = 5.0 GHz) Set Power...
Page 156 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (15 of 27) Model 68047C Serial No. ____________________ Date ___________ Model 68047C (with Option 2F Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz) (CW Frequency = 5.0 GHz) Set Power...
Page 157 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (16 of 27) Model 68047C w/Option 15A Serial No. ____________________ Date ___________ Model 68047C with Option 15A High Power (without Option 2 Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz)
Page 158 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (17 of 27) Model 68047C w/Option 15A Serial No. ____________________ Date ___________ Model 68047C with Option 15A High Power (with Option 2A Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz)
Page 159 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Figure 5-3. Power Level Accuracy and Flatness Test Record (18 of 27) Model 68047C w/Option 15A Serial No. ____________________ Date ___________ Model 68047C with Option 15A High Power (with Option 2F Step Attenuator) Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz)
Page 160 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (19 of 27) Model 68067C Serial No. ____________________ Date ___________ Model 68067C (without Option 2B Step Attenuator) Power Level Accuracy * Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz) (CW Frequency = 5.0 GHz)
Page 161 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (20 of 27) Model 68067C Serial No. ____________________ Date ___________ Model 68067C (with Option 2B Step Attenuator) Power Level Accuracy * Power Level Accuracy * Power Level Accuracy * (CW Frequency = 1.0 GHz) (CW Frequency = 5.0 GHz)
Page 162 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (21 of 27) Model 68067C w/Option 15A Serial No. ____________________ Date ___________ Model 68067C with Option 15A High Power (without Option 2B Step Attenuator) Power Level Accuracy * Power Level Accuracy * Power Level Accuracy *...
Page 163 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (22 of 27) Model 68067C w/Option 15A Serial No. ____________________ Date ___________ Model 68067C with Option 15A High Power (with Option 2B Step Attenuator) Power Level Accuracy * Power Level Accuracy * Power Level Accuracy *...
Page 164 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (23 of 27) Model 68077C Serial No. ____________________ Date ___________ Model 68077C (without Option 2C Step Attenuator) Power Level Accuracy * Power Level Accuracy * Power Level Accuracy * (CW Frequency = 5.0 GHz) (CW Frequency = 25.0 GHz)
Page 165 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (24 of 27) Model 68077C Serial No. ____________________ Date ___________ Model 68077C (with Option 2C Step Attenuator) Power Level Accuracy * Power Level Accuracy * Power Level Accuracy * (CW Frequency = 5.0 GHz) (CW Frequency = 25.0 GHz)
Page 166 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (25 of 27) Model 68087C Serial No. ____________________ Date ___________ Model 68087C (without Option 2D Step Attenuator) Power Level Accuracy * Power Level Accuracy * Power Level Accuracy * (CW Frequency = 5.0 GHz) (CW Frequency = 25.0 GHz)
Page 167 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (26 of 27) Model 68087C Serial No. ____________________ Date ___________ Model 68087C (with Option 2D Step Attenuator) Power Level Accuracy * Power Level Accuracy * Power Level Accuracy * (CW Frequency = 5.0 GHz) (CW Frequency = 25.0 GHz)
Page 168 OPERATION POWER LEVEL ACCURACY VERIFICATION AND FLATNESS TESTS Table 5-3. Power Level Accuracy and Flatness Test Record (27 of 27) Model 68097C Serial No. ____________________ Date ___________ Model 68097C Power Level Accuracy * Power Level Accuracy * Power Level Accuracy * (CW Frequency = 5.0 GHz) (CW Frequency = 25.0 GHz) (CW Frequency = 50.0 GHz)
Page 169 Chapter 6 Operator Maintenance Table of Contents INTRODUCTION ....6-3 ERROR AND WARNING/STATUS MESSAGES. . . 6-3 Self-Test Error Messages... . . 6-3 Normal Operation Error and Warning/Status Messages .
Page 170 www.valuetronics.com...
Page 171 Chapter 6 Operator Maintenance INTRODUCTION This chapter provides the information necessary for operator mainte- nance of the CW generator. Operator maintenance is limited to trou- bleshooting and repairs that can be made without removing the in- strument covers. ERROR AND During normal operation, the 680XXC generates error messages to in- WARNING/STATUS dicate internal malfunctions, abnormal signal generator operations, or...
Page 172 OPERATOR ERROR AND WARNING/ MAINTENANCE STATUS MESSAGES WARNING Self-test error messages normally indicate the failure of an internal component or assembly of the CW generator. There are no operator serviceable components inside. Refer servic- ing of the instrument to qualified service technicians. To prevent the risk of electrical shock or damage to precision components, do not remove the equipment covers.
Page 173 OPERATOR ERROR AND WARNING/ MAINTENANCE STATUS MESSAGES Table 6-1. Self-Test Error Messages (2 of 4) Error Message Description/Remarks Error 112 Indicates the coarse loop oscillator is not phase-locked. The 680XXC is still oper- Coarse Loop Osc Failed able but the accuracy and stability of the frequency outputs are greatly reduced. Error 113 Indicates the YIG loop is not phase-locked.
Page 174 OPERATOR ERROR AND WARNING/ MAINTENANCE STATUS MESSAGES Table 6-1. Self-Test Error Messages (3 of 4) Error Message Description/Remarks Error 127 Indicates a failure of the level detector input circuitry on the A10 PCB. Use caution Detector Input Circuit and always determine the output power level when operating the 680XXC in this Failed condition.
Page 175 OPERATOR ERROR AND WARNING/ MAINTENANCE STATUS MESSAGES Table 6-1. Self-Test Error Messages (4 of 4) Error Message Description/Remarks Error 139 Indicates a failure in the 32 - 40 GHz switched doubler filter path within the SDM. 32 – 40 GHz SDM Section Failed The 680XXC is still operable but it will not produce an RF output in the 32 - 40 GHz frequency range.
Page 176 OPERATOR ERROR AND WARNING/ MAINTENANCE STATUS MESSAGES Normal When an abnormal condition is detected during op- Operation eration, the 680XXC displays an error message to Error and indicate that the output is abnormal or that a signal Warning/ input or data entry is invalid. It also displays warn- Status ing messages to alert the operator to conditions that could cause an inaccurate signal generator output.
Page 177 OPERATOR ERROR AND WARNING/ MAINTENANCE STATUS MESSAGES Table 6-3. Possible Warning/Status Messages during Normal Operation Warning/Status Description Message OVN COLD This warning message indicates that the 100 MHz Crystal oven (or the 10 MHz Crystal oven if Option 16 is installed) has not reached operating temperature.
Page 178 OPERATOR MAINTENANCE TROUBLESHOOTING TROUBLESHOOTING Table 6-4 provides procedures for troubleshooting common malfunc- tions encountered during operation of the CW generator. Included are procedures for troubleshooting faults that do not produce error mes- sages, such as, failure to power up and unexpected shutdown. Table 6-4.
Page 179 OPERATOR MAINTENANCE TROUBLESHOOTING Table 6-4. Troubleshooting (2 of 3) CW Generator Quits During Operation (OPERATE light remains on) Trouble Description: The CW generator operates for some time, then shuts down (OPERATE light remains on). After a short period, the CW generator resumes normal operation. This is an indication that the 680XXC has reached an excessive operating temperature.
Page 180 OPERATOR MAINTENANCE TROUBLESHOOTING Table 6-4. Troubleshooting (3 of 3) UNLEVELED is Displayed Trouble Description: This message is displayed to indicate that the RF output is unleveled. Step 1 Check that the output power does not exceed the specified leveled-power rating and that the RF OUTPUT connector is terminated into a 50W load.
Page 181 OPERATOR ROUTINE MAINTENANCE MAINTENANCE ROUTINE MAINTENANCE Routine maintenance that can be performed by the operator consists of cleaning the fan filter, cleaning the data display, and replacing a defective line fuse. Cleaning the The CW generator must always receive adequate Fan Filter ventilation.
Page 182 OPERATOR ROUTINE MAINTENANCE MAINTENANCE Replacing the The value of the line fuse used in the 680XXC is de- Line Fuse termined by the line voltage selection—a 5A , type T fuse for 110 Vac line voltage; a 2.5A, type T fuse for 220 Vac line voltage.
Page 183 OPERATOR ROUTINE MAINTENANCE MAINTENANCE 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 Reconnect the CW generator to the power source. 680XXC OM 6-15/6-16 www.valuetronics.com...
Page 184 Chapter 7 Use With Other Instruments Table of Contents INTRODUCTION ....7-3 MASTER-SLAVE OPERATION ... 7-4 Connecting the 68XXXCs .
Page 185 56100A Scalar Network Analyzer so that it can be used as a sig- nal source for the analyzer. Instructions for connecting the 680XXC to a Anritsu Model 360B Vector Network Analyzer so that it can be used as a signal source for the analyzer operating in the tracking receiver mode.
Page 186 “MASTER” to the rear panel AUX together for Master-Slave opera- I/O connector on the Master instrument. tions, always use a Anritsu Connect the AUX I/O cable labeled Master-Slave interface cable set, “SLAVE” to the rear panel AUX I/O con- Part No.
Page 187 USE WITH MASTER-SLAVE OTHER INSTRUMENTS OPERATION Step 4 Connect the Master instrumetn RF OUT- PUT and the Slave instrument RF OUT- PUT to the appropriate connections on the DUT. Initiating The following paragraphs describe how to set up Master-Slave both instrumetns to perform master-slave opera- tions.
Page 188 USE WITH MASTER-SLAVE OTHER INSTRUMENTS OPERATION NOTE Upon reset, the slave frequencies (F0 - F9 and M0 - M9) return to the default values shown here. This menu lets you edit the listed frequencies for the Slave instrument. Use the cursor control key to select a frequency pa- rameter from the list, then press Edit to edit its value.
Page 189 USE WITH MASTER-SLAVE OTHER INSTRUMENTS OPERATION have finished setting the open parameter, close it by pressing its menu soft-key or by making another menu selection. Press Enable to begin master-slave operation. Press CW to return to the CW Menu display. Master-Slave During master-slave operation, the Slave unit is in Operation...
Page 190 USE WITH MASTER-SLAVE OTHER INSTRUMENTS OPERATION Press VNA Menu to go to the VNA Menu display (below). This menu lets you set the frequency offset and out- put power level for the Slave 68XXXC in the VNA mode. Press VNA Offset to open the slave frequency offset parameter.
Page 191 USE WITH MASTER-SLAVE OTHER INSTRUMENTS OPERATION Terminating The following describes how to terminate master- Master-Slave slave operation and return the Slave instrument to Operation local (front panel) control. On the Master instrument, select CW mode. At the CW Menu, press Master Slave to go to the Master Slave Menu display.
Page 192 USE WITH A 56100A SCALAR OTHER INSTRUMENTS NETWORK ANALYZER USE WITH A 56100A The 680XXC is directly compatible with the Anritsu Model 56100A SCALAR NETWORK Scalar Network Analyzer (SNA). The following paragraphs provide ANALYZER instructions for connecting the CW generator to the 56100A SNA so that is can be used as a signal source for the analyzer.
Page 193 USE WITH A 360B VECTOR OTHER INSTRUMENTS NETWORK ANALYZER USE WITH A 360B The 680XXC CW generator is compatible with the Anritsu Model 360B VECTOR NETWORK Vector Network Analyzer (VNA). The following paragraphs provide in- ANALYZER structions for connecting the 680XXC to the 360B VNA so that it can be used as a signal source for the analyzer operating in the tracking receiver mode.
Page 194 USE WITH USE WITH A 360B VECTOR OTHER INSTRUMENTS NETWORK ANALYZER SOURCE CONTROL SYSTEM BUS con- nector. Step 2 Connect one end of a coaxial cable to the 680XXC rear panel 10 MHz REF IN con- nector. Connect the other end to the 360B rear panel 10 MHz REF OUT connector.
Page 195 USE WITH USE WITH A 360B VECTOR OTHER INSTRUMENTS NETWORK ANALYZER Step 3 Press Line Term to select the correct GPIB data delimiter. The CW generator is now configured for 360B tracking receiver mode operation. Initiating Turn on the 360B VNA and configure it for tracking 360B Track- receiver mode operation.
Page 196 Appendix A Rear Panel Connectors INTRODUCTION This appendix provides descriptions for the rear panel connectors on a typical Series 680XXC Synthesized CW Generator. REAR PANEL Figure A-1 provides a illustration of the rear panel and describes the CONNECTORS rear panel connectors. CONNECTOR PINOUT Figures A-2 and A-3 provide pinout diagrams and descriptions for the DIAGRAMS...
Page 197 REAR PANEL CONNECTORS Figure A-1. Rear Panel, Series 680XXC Synthesized CW Generator (1 of 2) 680XXC OM www.valuetronics.com...
Page 198 AUX I/O: 25-pin connector that provides for single cable interface with another 68XXXB/C (master-slave operation) or with other Anritsu instruments such as the Anritsu 56100A Scalar Network Analyzer. A pin- out diagram for this connector is shown in Figure A-2.
Page 199 REAR PANEL CONNECTOR CONNECTORS PINOUT DIAGRAMS AUX I/O SIGNAL NAME SIGNAL DESCRIPTION Horizontal Sweep Output: Provides a 0V at beginning and +10V at end of sweep for all sweep modes, regardless of sweep width. In the CW mode, the voltage is HORIZ OUTPUT proportional to frequency between 0V at low end and +10V at the high end of range.
Page 200 REAR PANEL CONNECTOR CONNECTORS PINOUT DIAGRAMS SIGNAL NAME SIGNAL DESCRIPTION V/GHz Output: Provides a reference voltage relative to the RF output frequency V/GHz (1.0 V/GHz for Models 68017C, 68037C, and 68047C; 0.5 V/GHz for Model 68067C; 0.25 V/GHz for Models 68077C, 68087C, and 68097C). End-of-Sweep Input: Accepts a TTL high-level signal to tell the CW generator to EOS INPUT begin the end of sweep dwell.
Page 201 REAR PANEL CONNECTOR CONNECTORS PINOUT DIAGRAMS IEEE-488 GPIB 13 14 15 16 17 18 19 20 21 22 23 24 9 10 11 12 SIGNAL NAME SIGNAL DESCRIPTION Data Input/Output: Bits are HIGH when the data is logical 0 and LOW when the DIO 1 thru DIO 4 data is logical 1.
Page 202 Appendix B Performance Specifications PHASE-LOCKED STEP SWEEP MODE MODEL SUMMARY Sweep Width: Independently selected, 1 kHz (0.1 Hz with Option 11) to full range. Every frequency step in sweep Model Frequency Range range is phase-locked. 68017C 0.01 to 8.4 GHz Accuracy: Same as internal or external 10 MHz time base.
Page 203 PERFORMANCE SPECIFICATIONS PROGRAMMABLE FREQUENCY AGILITY SPECTRAL PURITY Under GPIB control, up to 3202 non-sequential frequency/ All specifications apply at the lesser of +10 dBm output or power sets can be stored and then addressed as a maximum specified leveled output power, unless otherwise phase-locked step sweep.
Page 204 PERFORMANCE SPECIFICATIONS SINGLE-SIDEBAND PHASE NOISE (dBc/Hz) Offset From Carrier Frequency Range 100 Hz 1 kHz 10 kHz 100 kHz 0.1 Hz to <10 MHz –90 –120 –130 –130 (w/Option 22) ³10 MHz to £2.0 GHz –77 –88 –86 –100 >2.0 GHz to £6.0 GHz –78 –88 –86...
Page 205 PERFORMANCE SPECIFICATIONS RF OUTPUT Power level specifications apply at 25° ±10°C. MAXIMUM LEVELED OUTPUT POWER Frequency Output Output Power with Output Power with Model Range Power Step Attenuator Electronic Step Number (GHz) (dBm) (dBm) Attenuator (dBm) w/Option 22 0.1 Hz to 10 MHz +13.0 +11.0 +9.0...
Page 206 PERFORMANCE SPECIFICATIONS LEVELED OUTPUT POWER RANGE OTHER OUTPUT POWER SPECIFICATIONS Standard Units Output Units: Output units selectable as either dBm or mV. Selection of mV assumes 50W load. All data entry and Without an Attenuator: Maximum leveled power to display are in the selected units. –15 dBm (–20 dBm typical).
Page 207 Reset: Returns all instrument parameters to predefined de- Emulations: The instrument responds to the published fault states or values. Any pending GPIB I/O is aborted. Se- GPIB commands and responses of the Anritsu Models lectable from the system menu. 6600, 6700, and 6XX00-series signal sources. When emu-...
Page 208 68XXXC synthesizer or allows for a single-cable inter- face with the Model 56100A Scalar Network Analyzer and other Anritsu instruments. For a pinout diagram and de- scriptions, see Appendix A, Figure A-2. SERIAL I/O (Serial Input/Output): Provides access to RS-232 terminal ports to support service and calibration functions and master-slave operations.
Page 209 PERFORMANCE SPECIFICATIONS OPTIONS Option 9, Rear Panel RF Output: Moves the RF output connector to the rear panel. Option 1, Rack Mounting: Rack mount kit containing a Option 11, 0.1 Hz Frequency Resolution: Provides fre- set of track slides (90° tilt capability), mounting ears, and quency resolution of 0.1 Hz.
Page 210 Subject Index Number 680XXC Data Display Description, 3-8 Front Panel Layout, 3-6 Menu Display Format, 3-9 General Description, 1-3 Menu Keys, 3-10 Manual, Electronic, 1-5 Data Entry Area Manuals, Related, 1-5 Description, 3-12 Models, List of, 1-4 Default Parameters, 3-16 - 3-17 Options, List of, 1-6 Performance Specifications, B-1 Rear Panel Layout, A-2...
Page 211 SUBJECT INDEX Layout, 3-6 Manual, GPIB Programming, 1-5 Manual, Maintenance, 1-6 Manual, SCPI Programming, 1-5 Markers, Frequency, 3-35 General Description, 1-3 Master Reset, 3-71, 3-81 General Purpose Interface Bus (GPIB) Master-Slave Operation, 7-4 Address, 2-7 Menu Maps Cable Length Restrictions, 2-7 CW Frequency Mode, 4-6 Interface Connector, 2-7 CW Power Sweep Mode, 4-11...
Page 212 SUBJECT INDEX Power Level Offset, 3-51 Setting Sweep Time, 3-27 Power Requirements, 2-4 Using Frequency Markers, 3-35 Preparation for Storage/Shipment, 2-13 Sweep Frequency Modes Preparation for Use, 2-4 List Sweep Frequency Mode, 3-26 Line Voltage Selection, 2-4 Manual Sweep Frequency Mode, 3-26 Operating Environment, 2-6 Step Sweep Frequency Mode, 3-26 Power Requirements, 2-4...

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