11. Sweep Time Accuracy Test
1. Connect equipment as shown in Figure 2-21.
2. Press
SWEEP
on the analyzer.
3. Key in the following settings:
[CENTER FREQUENCY_) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
500
MHz
(
FREQU
EN
CY SPAN
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
4. Set up the universal counter as follows:
a. Set all front panel keys in “out” position.
b. Set POWER switch to ON.
c. Set GATE TIME vernier control to 9 o’clock.
d. Set SEP/COM A switch to COM A position.
e. Depress T.I. A B switch (making sure the blue shift key is
out).
f. Set Channel A trigger level to trigger on negative slope.
g. Set Channel B trigger level to trigger on positive slope.
h. Set both Channel A and Channel B
switches to dc.
i. Connect the digital voltmeter to Channel A TRIGGER LEVEL
OUT. (Be sure to ground the DVM properly.)
j. Adjust Channel A trigger level to set a DVM voltage reading of
0 . 3 v .
k. Repeat steps i and j for Channel B.
5. Set analyzer
TIME
]
to 20 ms. Reset the universal counter
and press SWEEP
on the spectrum analyzer.
6. Note the measured sweep time on the universal counter and
record this value in
2-16. The measured sweep time should
be a value between the minimum and maximum values given in
2-16.
7. Repeat steps 5 and 6 for each sweep time setting in
2-16.
Performance Tests 2-47
