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ADJUSTMENTS
ADJUSTMENTS
MODEL 8559A
5
-
18.
CALIBRATED SWEEP TIME ADJUSTMENT
REFERENCE:
A9
Schematic
DESCRIPTION:
A
counter is used to adjust the time interval of the
1
millisecond per division and
5
milliseconds per division
sweep times. Calibrated sweep times from 0.1 milliseconds through 50 milliseconds are then checked using the
counter time
-
interval
(T.
I
.)
function.
Dl
SPLAY
COUNTER
0
MHz
SPECTRUM
ANALYZER
FIGURE
5-2.
CALIBRATED SWEEP TIME ADJUSTMENT TEST SETUP
EQUIPMENT:
50 MHz Universal Counter
..........................................
HP 5300B/5302A
Extender Cable Assembly
..............................................
HP 5060
-
0303
BNC Tee
............................................................
HP 1250
-
078
1
PROCEDURE:
NOTE
Since the calibrated sweep time adjustments are dependent on the
+
14.5V
and
-
10V
power supplies, the Power Supply Checks and Adjustments (par
-
agraph 5
-
17) should be performed before starting this procedure.