Wiltron 680 B Series User manual

490 JARVIS DRIVE
MORGAN HILL, CA 95037-2809
SERIES
680XXB
SYNTHESIZED CW GENERATOR
OPERATION MANUAL
P/N: 10370-10264
REVISION: D
PRINTED: OCTOBER 1996
COPYRIGHT 1994 WILTRON CO.

WARRANTY
The WILTRON product(s) listed on the title page is (are) warranted against defects in materials
and workmanship for one year from the date of shipment, except for YIG-tuned oscillators and all
WILTRON manufactured microwave components, which are warranted for two years.
WILTRON’s obligation covers repairing or replacing products which prove to be defective during
the warranty period. Buyers shall prepay transportation charges for equipment returned to WIL-
TRON for warranty repairs. Obligation is limited to the original purchaser. WILTRON is not liable
for consequential damages.
LIMITATION OF WARRANTY
The foregoing warranty does not apply to WILTRON connectors that have failed due to normal wear.
Also, the warranty does not apply to defects resulting from improper or inadequate maintenance
by the Buyer, unauthorized modification or misuse, or operation outside of the environmental
specifications of the product. No other warranty is expressed or implied, and the remedies provided
herein are the Buyer’s sole and exclusive remedies.
NOTICE
WILTRON Company has prepared this manual for use by WILTRON Company personnel and
customers as a guide for the proper installation, operation, and maintenance of WILTRON Company
equipment and computor programs. The drawings, specifications, and information contained herein
are the property of WILTRON Company, and any unauthorized use or disclosure of these drawings,
specifications, and information is prohibited; they shall not be reproduced, copied, or used in whole
or in part as the basis for manufacture or sale of the equipment or software programs without the
prior writtten consent of WILTRON Company.

MANUAL CHANGES
MANUAL:
Title: Series 680XXB Synthesized CW Generator Operation Manual
Part Number: 10370-10264
Rev. Ltr/Date: D / October 1996
CHANGE PACKET
Part Number: 10900-00193
INSTRUCTIONS
1. Make the manual changes listed below. The changes are listed in numerical order by page number.
Effectivity is all CW generator serial numbers.
2. The replacement pages provided are for technical changes to the manual. The black bar or bars in the
replacement page margins shows the area in which the changes were made.
CHANGE 1, December 1996
1. Declaration of Conformity Page
Replace with the enclosed Declaration of Conformity page, Changed: December 1996.
2. Chapter 2 Table of Contents Page
Replace with the enclosed Chapter 2 Table of Contents page, Changed: December 1996.
3. Page 2-4
Replace with enclosed pages 2-3 and 2-4, Changed: December 1996.
4. Pages 2-10 thru 2-11/2-12
Replace with enclosed pages 2-9 thru 2-14, Changed: December1996.
PCO: 22761
680XXB OM C-1

MANUAL CHANGES
MANUAL:
Title: Series 680XXB Synthesized CW Generator Operation Manual
Part Number: 10370-10264
Rev. Ltr/Date: D / October 1996
CHANGE PACKET
Part Number: 10900-00207
INSTRUCTIONS
1. Make the manual changes listed below. The changes are listed in numerical order by page number.
Effectivity is all CW generator serial numbers.
2. The replacement pages provided are for technical changes to the manual. The black bar or bars in the
replacement page margins shows the area in which the changes were made.
CHANGE 2, February 1997
1. Page B-2
Replace with enclosed pages B-1 and B-2, Changed: February 1997.
PCO: 22827
680XXB OM C-1

Safety Symbols
To prevent the risk of personal injury or loss related to equipment malfunction, WILTRON Company uses
the following symbols to indicate safety-related information. For your own safety, please read the informa-
tion 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.
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 performed properly, could result in damage to or destruction of a
component of the instrument. Do not proceed beyond a CAUTION
note until the indicated conditions are fully understood and met.
The instrument is marked with this symbol to indicate that it is neces-
sary for the user to refer to the instructions in the operation manual.
Indicates ground.
Indicates heavy weight equipment.
680XXB OM Safety-1

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.
There are no operator serviceable components inside. Refer
servicing 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.
WARNING
For Safety
Before changing the fuse, always remove the power cord
from the power outlet. There is the risk of receiving a fatal
electric shock if the fuse is replaced with the power cord con-
nected.
Always use a new fuse of the type and rating specified by
the fuse markings on the rear panel of the instrument.
WARNING
WARNING
Use two or more people to lift and move this equipment, or
use an equipment cart. There is a risk of back injury, if this
equipment is lifted by one person.
WARNING
Safety-2 680XXBOM

TABLE OF CONTENTS
Chapter 1 — General Information
Chapter 1 provides general information about the WILTRON Series 680XXB Synthesized CW Gen-
erator. It includes a general description of the CW generator and information on its identification
number, related manuals, options, and performance specifications. A listing of recommended test
equipment is also provided. Chapter contents are detailed immediately following the tab.
Chapter 2 — Installation
Chapter 2 provides installation instructions for the Series 680XXB Synthesized CW Generator. It
includes information on initial inspection, preparation for use, storage, and reshipment, and GPIB
setup and interconnections. Chapter contents are detailed immediately following the tab.
Chapter 3 — Local (Front Panel) Operation
Chapter 3 provides information and instructions for operating the Series 680XXB Synthesized CW
Generator using the front panel controls. It includes illustrations of the front panel, data display
area, and data entry area; an annotated diagram of the menu display format; and instructions for
performing CW generator operations. Chapter contents are detailed immediately 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 frequency and power level modes of operation plus
system configuration. Chapter contents are detailed immediately following the tab.
Chapter 5 — Operation Verification
Chapter 5 provides three operation verification tests that can be used to verify Series 680XXB Syn-
thesized CW Generator operation. Setup instructions and step-by-step procedures are included for
each test. Test results can be compared with the specified limits shown on the test record forms
that are provided for each 680XXB model configuration. Chapter contents are detailed immediately
following the tab.
Chapter 6 — Operator Maintenance
Chapter 6 provides the information necessary for operator maintenance of the CW generator.
Operator maintenance is limited to basic troubleshooting and repairs that can be made without re-
moving the instrument covers. Chapter contents are detailed immediately following the tab.
Chapter 7 — Use With Other Instruments
Chapter 7 provides information and instructions for using the Series 680XXB Synthesized CW
Generator with other WILTRON instruments. Chapter contents are detailed immediately following
the tab.
680XXB OM i

Appendix A — Rear Panel Connectors
Appendix A provides descriptions of the rear panel connectors on a typical Series 680XXB Synthe-
sized CW Generator. It includes pinout diagrams and descriptions for the AUX I/O and IEEE-488
GPIB connectors.
Appendix B — Performance Specifications
Appendix B lists the performance specifications for the Series 680XXB Synthesized CW Generator.
Supplements
This tab provides a repository for application notes and other material used to supplement manual
chapters.
Index
Provides a subject index.
Table of Contents (Continued)
ii 680XXB OM

Table of Contents
1-1 SCOPE OF MANUAL . . . . . . . . . . . . . . . . 1-3
1-2 INTRODUCTION . . . . . . . . . . . . . . . . . . 1-3
1-3 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
1-8 RECOMMENDED TEST EQUIPMENT . . . . . . 1-8
Chapter 1
General Information

Figure 1-1. Series 680XXB Synthesized CW Generator

Chapter 1
General Information
1-1 SCOPE OF MANUAL This manual provides general information, installation, and operating
information for the WILTRON Series 680XXB Synthesized CW Gener-
ator. (Throughout this manual, the terms 680XXB and CW generator
will be used interchangeably to refer to the instrument.) Manual or-
ganization is shown in the table of contents.
1-2 INTRODUCTION This chapter contains general information about the series 680XXB
CW generators. It includes a general description of the instrument and
information on its identification number, related manuals, options, and
performance specifications. A listing of recommended test equipment is
also provided.
1-3 DESCRIPTION The Series 680XXB Synthesized CW Generators are microprocessor-
based, synthesized signal sources with high resolution phase-lock capa-
bility. They generate both discrete CW frequencies and broad (full
range) and narrow band step sweeps across the frequency range of
10 MHz to 65 GHz. All functions of the CW generator are fully control-
lable locally from the front panel or remotely (except for power
on/standby) via the IEEE-488 General Purpose Interface Bus (GPIB).
The series presently consists of 15 models covering a variety of fre-
quency and power ranges. Table 1-1, page 1-4, lists models, frequency
ranges, and maximum leveled output.
680XXB OM 1-3

GENERAL 680XXB
INFORMATION MODELS
680XXB
Model Frequency (GHz) Output Power Output Power
w/Step Attenuator
68037B 2.0 – 20.0 GHz +13.0 dBm +11.0 dBm
68045B 0.5 – 20.0 GHz +13.0 dBm +11.0 dBm
68047B 0.01 – 20.0 GHz +13.0 dBm +11.0 dBm
68053B 2.0 – 20.0 GHz
20.0 – 26.5 GHz +9.0 dBm +6.0 dBm +7.0 dBm +3.5 dBm
68055B 0.5 – 2.2 GHz
2.2 – 20.0 GHz
20.0 – 26.5 GHz
+13.0 dBm
+9.0 dBm
+6.0 dBm
+11.0 dBm
+7.0 dBm
+3.5 dBm
68059B 0.01 – 2.0 GHz 2.0 – 20.0 GHz
20.0 – 26.5 GHz
+13.0 dBm
+9.0 dBm
+6.0 dBm
+11.0 dBm
+7.0 dBm
+3.5 dBm
68063B 2.0 – 20.0 GHz
20.0 – 40.0 GHz +9.0 dBm +6.0 dBm +7.0 dBm +3.0 dBm
68065B 0.5 – 2.2 GHz
2.2 – 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
68069B 0.01 – 2.0 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
68075B
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
–1.0 dBm
68077B
0.01 – 2.0 GHz
2.0 – 20.0 GHz
20.0 – 40.0 GHz
40.0 – 50.0 GHz
+12.0 dBm
+10.0 dBm
+2.5 dBm
+2.5 dBm
+10.0 dBm
+8.5 dBm
0.0 dBm
–1.0 dBm
68085B
0.5 – 2.2 GHz
2.2 – 20.0 GHz
20.0 – 40.0 GHz
40.0 – 50.0 GHz
50.0 – 60.0 GHz
+11.0 dBm
+10.0 dBm
+2.5 dBm
+2.0 dBm
+2.0 dBm
+10.0 dBm
+8.5 dBm
0.0 dBm
–1.5 dBm
–2.0 dBm
68087B
0.01 – 2.0 GHz
2.0 – 20.0 GHz
20.0 – 40.0 GHz
40.0 – 50.0 GHz
50.0 – 60.0 GHz
+12.0 dBm
+10.0 dBm
+2.5 dBm
+2.0 dBm
+2.0 dBm
+10.0 dBm
+8.5 dBm
0.0 dBm
–1.5 dBm
–2.0 dBm
68095B
0.5 – 2.2 GHz
2.2 – 20.0 GHz
20.0 – 40.0 GHz
40.0 – 50.0 GHz
50.0 – 65.0 GHz
+11.0 dBm
+10.0 dBm
+2.5 dBm
0.0 dBm
–2.0 dBm
Not
Available
Table 1-1. Series 680XXB Models (1 of 2)
1-4 680XXB OM

680XXB
Model Frequency (GHz) Output Power Output Power
w/Step Attenuator
68097B
0.01 – 2.0 GHz
2.0 – 20.0 GHz
20.0 – 40.0 GHz
40.0 – 50.0 GHz
50.0 – 65.0 GHz
+12.0 dBm
+10.0 dBm
+2.5 dBm
0.0 dBm
–2.0 dBm
Not
Available
With Option 15A (High Power) Installed
68037B 2.0 – 20.0 GHz +17.0 dBm +15.0 dBm
68045B 0.5 – 2.2 GHz
2.2 – 20.0 GHz +13.0 dBm +17.0 dBm +11.0 dBm +15.0 dBm
68047B 0.01 – 2.0 GHz
2.0 – 20.0 GHz +13.0 dBm +17.0 dBm +11.0 dBm +15.0 dBm
68053B 2.0 – 20.0 GHz
20.0 – 26.5 GHz +13.0 dBm +10.0 dBm +11.0 dBm +7.5 dBm
68055B 0.5 – 2.2 GHz 2.2 – 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
68059B 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
68063B 2.0 – 20.0 GHz
20.0 – 40.0 GHz +13.0 dBm +6.0 dBm +11.0 dBm +3.0 dBm
68065B 0.5 – 2.2 GHz 2.2 – 20.0 GHz
20.0 – 40.0 GHz
+13.0 dBm
+13.0 dBm
+6.0 dBm
+11.0 dBm
+11.0 dBm
+3.0 dBm
68069B 0.01 – 2.0 GHz 2.0 – 20.0 GHz
20.0 – 40.0 GHz
+13.0 dBm
+13.0 dBm
+6.0 dBm
+11.0 dBm
+11.0 dBm
+3.0 dBm
68075B 0.5 – 50.0 GHz Standard Standard
68077B 0.01 – 50.0 GHz Standard Standard
68085B 0.5 – 60.0 GHz Standard Standard
68087B 0.01 – 60.0 GHz Standard Standard
68095B 0.5 – 65.0 GHz Standard Not Available
68097B 0.01 – 65.0 GHz Standard NotAvailable
Table 1-1. Series 680XXB Models (2 of 2)
GENERAL 680XXB
INFORMATION MODELS
680XXB OM 1-5

1-4 IDENTIFICATION NUMBER All WILTRON instruments are assigned a unique six-digit ID number,
such as “401001”. 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.
When ordering parts or corresponding with WILTRON Customer Serv-
ice, please use the correct serial number with reference to the specific
instrument’s model number (i.e., Model 68047B Synthesized CW Gen-
erator, Serial No. 401001).
1-5 RELATED MANUALS This is one of a four manual set that consists of an Operation Manual,
a GPIB Programming Manual, a SCPI Programming Manual, and a
Maintenance Manual.
GPIB
Programming
Manual
This manual provides information for remote opera-
tion of the CW generator with Product Specific com-
mands sent from an external controller via the IEEE
488 General Purpose Interface Bus (GPIB). It con-
tains a general description of the GPIB and bus data
transfer and control functions, a complete listing
and description of all 680XXB GPIB Product Specific
commands, and several programming examples. The
WILTRON part number for the PM is 10370-10266.
SCPI
Programming
Manual
This manual provides information for remote opera-
tion of the CW generator with Standard Commands
for Programmable Instruments (SCPI) commands
sent from an external controller via the IEEE 488
General Purpose Interface Bus (GPIB). It contains a
general description of the GPIB and bus data trans-
fer and control functions, a complete listing and de-
scription of each command in the 680XXB SCPI
command set, and examples of command usage. The
WILTRON part number for the SCPI Programming
Manual is 10370-10272.
Maintenance
Manual The Maintenance Manual supplies service informa- tion for all models in the 680XXB series. The service
information includes functional circuit descriptions,
block diagrams, performance verification tests, cali-
bration procedures, troubleshooting data, and assem-
bly and component removal/replacement procedures.
The WILTRON part number for the MM is 10370-
10262.
GENERAL IDENTIFICATION
INFORMATION NUMBER
1-6 680XXB OM

1-6 OPTIONS The following options are available.
Option 1, Rack Mounting. Rack mount kit containing a set of
track slides (90°tilt capability), mounting ears, and front panel
handles for mounting the instrument in a standard 19-inch equip-
ment rack.
Option 2A, 110 dB Step Attenuator. Adds a 10 dB per step
attenuator with a 110 dB range for models having a high-end fre-
quency of ≤26.5 GHz. Output power is selected directly in dBm on
the front panel (or via GPIB). Rated RF output power is reduced.
Option 2B, 110 dB Step Attenuator. Adds a 10 dB per step
attenuator with a 110 dB range for models having a high-end fre-
quency of ≤40 GHz. Output power is selected directly in dBm on
the front panel (or via GPIB). Rated RF output power is reduced.
Option 2C, 90 dB Step Attenuator. Adds a 10 dB per step at-
tenuator with a 90 dB range for models having a high-end fre-
quency of ≤50 GHz. Output power is selected directly in dBm on
the front panel (or via GPIB). Rated RF output power is reduced.
Option 2D, 90 dB Step Attenuator. Adds a 10 dB per step at-
tenuator 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 reduced.
Option 9, Rear Panel RF Output. Moves the RF output connec-
tor to the rear panel.
Option 11, 0.1 Hz Frequency Resolution. Provides frequency
resolution of 0.1 Hz.
Option 14, WILTRON 360B VNA Compatibility. Modifies rack
mounting hardware to mate unit in a WILTRON 360B VNA con-
sole.
Option 15A, High Power Output. Adds high-power RF compo-
nents to the instrument providing increased RF output power in
the 2–26.5 GHz frequency range. Option 15A is standard in mod-
els having a high-end frequency that is >40 GHz.
Option 16, High-Stability Time Base. Adds an ovenized,
10 MHz crystal oscillator with <5 x 10–10/day frequency stability.
Option 17B, No Front Panel. Deletes the front panel for use in
remote control applications where a front panel display or key-
board control are not needed.
Option 18, mmWave Module Bias Output. Provides bias out-
put for 54000-xWRxx Millimeter Wave Source Modules. BNC Twi-
nax connector, rear panel.
GENERAL
INFORMATION OPTIONS
680XXB OM 1-7

Option 19, SCPI Programmability. Adds GPIB command mne-
monics complying with Standard Commands for Programmable
Instruments (SCPI), Version 1993.0. SCPI programming complies
with IEEE 488.2-1987.
1-7 PERFORMANCE
SPECIFICATIONS
Synthesizer performance specifications are provided in Appendix B.
1-8 RECOMMENDED TEST
EQUIPMENT
Table 1-2 lists the recommended test equipment for performing the Se-
ries 680XXB Synthesized CW Generator operation verification tests in
Chapter 5.
Instrument Critical Specification Recommended Manufacturer/Model
Frequency
Counter,
with
Cable Kit
and
External Mixer
Range: 0.01 to 65 GHz
Input Z: 50 Ω
Resolution: 1 Hz
Other: External Time Base
Input
EIP Microwave, Inc. Models 538B,
548B, or 578B,
with
Cable Kit: Option 590
and
External Mixer:
Option 91 (26.5 to 40 GHz)
Option 92 (40 to 60 GHz)
Option 93 (60 to 90 GHz)
Power Meter,
with
Power
Sensor
Range: –30 to +20 dBm
(1µW to 100 mW) Hewlett-Packard Model 437B,
with
Power Sensor:
HP 8487A(0.01 to 50 GHz)
Oscilloscope
Bandwidth: DC to 150 MHz
Vertical Sensitivity: 2 mV/
division
Horiz Sensitivity: 50 ns/
division
Tektronix, Inc. Model TAS485
Adapter K (male) to 2.4 mm (female)
Adapts the Power Sensor,
HP 8487A, to the 680XXB
RF OUTPUT connector
(≤40 GHz models).
Hewlett-Packard
Part Number: HP 11904D
Table 1-2. Recommended Test Equipment
GENERAL RECOMMENDED
INFORMATION TEST EQUIPMENT
1-8 680XXB OM

Table of Contents
2-1 INTRODUCTION . . . . . . . . . . . . . . . . . . 2-3
2-2 INITIAL INSPECTION . . . . . . . . . . . . . . . 2-3
2-3 PREPARATION FOR USE . . . . . . . . . . . . . 2-4
Power Requirements . . . . . . . . . . . . . . . . 2-4
Line Voltage Selection . . . . . . . . . . . . . . . 2-4
Power Connection . . . . . . . . . . . . . . . . . . 2-4
Standby Operation . . . . . . . . . . . . . . . . . 2-5
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 the Line Terminator . . . . . . . . . . . 2-9
Selecting the Interface Language . . . . . . . . . 2-9
2-5 RACK MOUNTING KIT INSTALLATION . . . . . 2-10
Preliminary . . . . . . . . . . . . . . . . . . . . . 2-10
Procedure . . . . . . . . . . . . . . . . . . . . . . 2-10
2-6 PREPARATION FOR STORAGE/SHIPMENT . . . 2-13
Preparation for Storage . . . . . . . . . . . . . . . 2-13
Preparation for Shipment . . . . . . . . . . . . . 2-13
Chapter 2
Installation

Chapter 2
Installation
2-1 INTRODUCTION This chapter provides installation instructions for the Series 680XXB
Synthesized CW Generator. It includes information on initial inspec-
tion, preparation for use, storage, and reshipment, and General Pur-
pose Interface Bus (GPIB) setup and interconnections.
2-2 INITIAL INSPECTION Inspect the shipping container for damage. If the shipping container or
cushioning material is damaged, retain until the contents of the ship-
ment have been checked against the packing list and the CW generator
has been checked for mechanical and electrical operation.
If the shipment is incomplete or if the CW generator is damaged me-
chanically or electrically, notify your local sales representative or WIL-
TRON Customer Service. If either the shipping container is damaged
or the cushioning material shows signs of stress, notify the carrier as
well as WILTRON. Keep the shipping materials for the carrier’s inspec-
tion.
Use two or more people to lift and move this equipment, or
use an equipment cart. There is a risk of back injury, if this
equipment is lifted by one person.
WARNING
680XXB OM 2-3

2-3 PREPARATION FOR USE Preparation for use consists of (1) checking that the rear panel line volt-
age selector switch is set for the correct line voltage and (2) connecting
the CW generator to the power source. The following paragraphs pro-
vide these procedures along with information about power require-
ments, warmup times, and the operating environment.
Power
Requirements The CW generator accepts 90 to 132 Vac and 180 to 264 Vac, 48 to 400 Hz, single-phase power. Power
consumption is 400 VA maximum. The CW gener-
ator is intended for Installation Category (Overvol-
tage Category) II.
Line Voltage
Selection The line voltage selector switch on the rear panel can be set for either 110 Vac or 220 Vac operation
(Figure 2-1). When the switch is set to 110 Vac, the
680XXB accepts 90 to 132 Vac line voltage. When
the switch is set to 220 Vac, the 680XXB accepts 180
to 264 Vac line voltage. If the selector setting is incor-
rect for the line voltage available, change it to the
correct setting.
Whenever the selector setting is changed, the line
fuse must be changed to the correct value for the
line voltage selected. Line fuse values for the line
voltages are printed on the rear panel next to the
fuse holder.
Power
Connection Connecting the 680XXB to line power automatically places it in operation (front panel OPERATE LED
on). To connect it to the power source, plug the fe-
male end of the power cable into the input line volt-
age receptacle on the rear panel (Figure 2-1). Then
plug the male end of the power cord into a three-
wire power line outlet.
PREPARATION
INSTALLATION FOR USE
Before applying power, verify that the unit is set to match
the available line voltage and that the installed fuse is of the
correct type and rating.
CAUTION
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 equipment
in this manner, there is a risk of receiving a severe or fatal
electric shock.
WARNING
2-4 680XXB OM
Changed: December 1996