HP 8754A - Narrowband Sweep Using External Swept Source

Model 8754A
Using an External Source
To use this system:
Set 8620C
to EXT SWEEP mode
Set 8620C START and STOP frequencies as desired
Press
8754A FREQUENCY mode START pushbutton
Adjust 8754A FREQUENCY MHz display to 8620C START frequency
Set
8754A SWEEP WIDTH MHz to 8620C sweep width
Adjust 8754A SWEEP controls for desired sweep rate
Calibrate and make measurements as discussed previously
8662A
Narrowband Sweep Using External Swept Source
For sweeps less than one octave, a source containing its own
sweep capability, such
as the 8662A Synthesizer, may be
used.
8754A
RF
8748A
REFERENCE
EXTENSION
CABLE
EXT
SWEEP IN 6--===---==~~~
~II II::I~;I~J~
""-----t~I@ 0
0
0 ° 0 0000 DODO DODO
J7-3 c:J ° 0 0 ••
For the 8662A, the horizontal axis of the 8754A is driven
by connecting the 8662A SWEEP OUTPUT, which is a 0 to
lOV ramp, to the 8754A EXT SWEEP IN connector. Proper
retrace blanking
is achieved by connecting the 8662A Z-axis
blanking output to the 8754A PROGRAMMING connector,
J7 pin 3 (serial prefix 1908A and higher).
To use this system:
Set
8754A rear-panel switch to EXT SWEEP
Set
8662A controls for desired frequency range, power level, and sweep speed (2 ms/step or longer).
Set 8754A SWEEP WIDTH MHz to EXT RF
Set 8754AFREQUENCY MHz display to the START frequency of the sweep
Calibrate and make measurements
as discussed previously
No alternate sweep capability exists, so only one rectangular c ed.
For the 8662A, devices with group delay greater than 1 ms may require slow sweep speed.
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