INPUTS and OUTPUTS
EXT ALC IN (External ALC Input): Provides for leveling
the RF output signal externally with either a detector or power
meter. Signal requirements are shown in the RF Output
specifications on page B-4.
RF OUTPUT: Provides for RF output from 50
Ω
source im-
pedance. K or V Connector, female. Option 9 moves the RF
Output connector to the rear panel.
10 MHz REF IN: Accepts an external 10 MHz
±
100 Hz,
0 to +10 dBm time-base signal. Automatically disconnects
the internal high-stability time-base option, if installed. 50
Ω
impedance.
10 MHz REF OUT: Provides a 0.5 Vp-p, AC coupled,
10 MHz signal derived from the internal frequency standard.
50
Ω
impedance.
HORIZ OUT (Horizontal Sweep Output): Provides 0V at
beginning and +10V at end of sweep, regardless of sweep
width. In CW mode, the voltage is proportional to frequency
between 0V at low end and +10V at the high end of range.
In CW mode, if CW RAMP is enabled, a repetitive, 0V to
+10V ramp is provided.
SEQ SYNC OUT (Sequential Sync Output): P r o vides a
+5V signal during retrace, at bandswitching points, and dur-
ing each frequency step in step sweep mode, –5V during
markers, and –10V during the selected marker.
DWELL IN: Accepts an external TTL low-level signal to
pause the sweep. The sweep resumes when the signal is
removed.
V/GHz OUT: Provides a reference voltage relative to the RF
output frequency (refer to the table below).
AUX I/O (Auxiliary Input/Output): Provides for most of the
rear panel BNC connections through a single, 25-pin, D-type
connector. Supports master-slave operation with another
68XXXB synthesizer or allows for a single-cable interface
with the Model 562 Scalar Network Analyzer and other Wil-
tron instruments. For a pinout diagram and descriptions, see
Appendix A, Figure A-2.
SERIAL I/O (Serial Input/Output): P r o v i d e s a c c es s t o
RS-232 terminal ports to support service and calibration func-
tions and master-slave operations.
IEEE-488 GPIB: Provides input/output connections for the
General Purpose Interface Bus (GPIB). For a pinout diagram,
see Appendix A, Figure A-3.
Model Number
V/GHz Output
68037B, 68045B, 68047B
1.0V/GHz
68053B, 68055B, 68059B
0.5V/GHz
68063B, 68065B, 68069B
0.5V/GHz
68075B, 68077B
0.25V/GHz
68085B, 68087B
0.25V/GHz
68095B, 68097B
0.25V/GHz
Input/Output Connectors
Nomenclature
Type
Location
EXT ALC IN
BNC
Front & Rear Panel
RF OUTPUT
K-Connector
V-Connector
Standard-Front Panel
Option 9-Rear Panel
10 MHz REF IN
BNC
Rear Panel
10 MHz REF OUT
BNC
Rear Panel
HORIZ OUT
BNC
Rear Panel
SEQ SYNC OUT
BNC
Rear Panel
DWELL IN
BNC
Rear Panel
V/GHz OUT
BNC
Rear Panel
AUX I/O
25-pin D-type
Rear Panel
SERIAL I/O
RJ45
Rear Panel
IEEE-488 GPIB
Type 57
Rear Panel
PERFORMANCE
SPECIFICATIONS
680XXB OM
B-7
Summary of Contents for 680 B Series
Page 5: ......
Page 11: ...Figure 1 1 Series 680XXB Synthesized CW Generator...