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Model 5355A
Operation and Programming
d.
If the signal is of sufficient amplitude to light the 5355A SIGNAL indicator, the signal will
be automatically measured and displayed on the 5345A.
e.
[ * j)^c,r indicator light should be on.
3-38.
Pulsed RF Signal Operation
3-39.
Use the same procedures as in CW Signal Operation (paragraph 3-37) except as follows
(see Table 3-2):
NOTE
In the following step, use of a cable of different length maycause
measurement errors.
a.
Connect the GATE OUT connector on the rear panel of the 5355A to the GATE CON¬
TROL INPUT connector on the rear panel of the 5345A, using the 10502A cable provided.
b.
Place the 5345A GATE CONTROL switch to INT. (In this switch position a control signal
from the 5355A automatically sets the 5345A to EXT GATE mode when PULSE mode on the
5355A is selected and to INT GATE mode when CW mode on the 5355A is selected.
However, older 5345A's with Serial Prefix 1744A and below do not have this capability.
For these 5345A's when in PULSE mode,set the 5345A GATE CONTROL switch to EXT and
when in CW mode, set the switch to INT. A minor modification (see paragraph 8-13) can
be made which updates the older 5345A's for automatic selection of EXT/I NT GATE.)
c.
Press
[ • )]
key on the front panel of the 5355A.
NOTE
In the 5355A's PULSE mode, a calibration factor is automatically
computed during the first 10 measurements (a O is displayed in
the 5345A's most significant digit to indicate that the calibration
factor is being computed). All subsequent frequency measure¬
ments are multiplied by the calibration factor in order to reduce
the effects of error. The calibration factor remains unchanged
unless the external gate width changes by more than 12% in
which case another calibration factor is computed. The accuracy
specification applies to readings after the first 10 (see Table 1-1).
3-40.
Manual Signal Operation
a.
Press
('• ||**rQs
key and use the
or [ • | ll™1 to enter a manual center
frequency that is within 50 MHz of the input signal frequency.
0
MAN
key again to release the DATA ENTRY mode and press I ® ] MANUA- key
$7£!*>
^TTTTTT^y ;,/PA'P
to enter the MEASUREMENT mode.
3-9
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