
2 1. Frequency Response Adjustments
Note
f9
Vdc Reference Supplies adjustment
A6A12R113
-9 V affects
YTX/YTO
tracking, YTX diode bias, and Slope Generator Upper/Lower
Segment frequency breakpoints in
all
preselected frequency bands
(Bands B, C, D, and E, 2
GHz
-
22
GHz).
16. Adjust 17-turn potentiometer
A6A12R113
-9 V for a DVM
indication of -9.000 fO.OO1 Vdc. See Figure 3-90 for the
location of
A6A12R113.
17. Press
C2--22J
on the spectrum analyzer. Set the controls of the
spectrum analyzer as follows:
CENTER FREQUENCY
. . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.O
Hz
SWEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SINGLE
18. Use a BNC cable and a BNC (f) to
dual
banana plug adapter to
connect the DVM to the RF Section rear-panel SWEEP+TUNE
OUT connector.
19. Adjust 25-turn potentiometer
A6A12R98
ZERO for a DVM
indication of 0.000 fO.OO1 Vdc. See Figure 3-90 for the location
of
A6A12R98.
Band
A,
10
MHz
to
2.5
20. Connect the equipment as shown in Figure 3-91, with one
GHz
resistive output of the power splitter connected to the power
meter/power sensor using an APC 3.5 (m) to Type N (f) adapter,
and the second resistive output connected to the spectrum
analyzer RF INPUT using an APC 3.5 (m) to Type N (m) adapter.
Connect the power meter rear panel RECORDER OUTPUT to the
synthesized sweeper front panel LEVELING EXT INPUT.
21. Press
~NSTR
PRESET) on the synthesized sweeper. Set the controls
of the synthesized sweeper as follows:
CW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 MHz
POWER LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . -9.0
dBm
RF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
LEVELING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INT
f-4
POmR
SPLITTER
I:
POmR
METER
SPECTRW
ANALYZER
Figure 3-91.
Frequency Response Adjustments Setup (10
MHz
to 2.5
GHz)
Adjustments 3-179
Komentarze do niniejszej Instrukcji