HP 8340B Manual page 136

5-4. MIN LOOP, A32, A33, AND A32A1 (Cont'd)
2. Set LINE switch to ON and press [INSTRPRESET]. Connect a jumper between A59TP4 OLl and
A59TP5 +5V to disable the UNLK indicator circuit.
3. Press [CW] on the OUT, then enter [6] [0] [9] [0] [MHz].
4. Disconnect the cable from A33J2 M/N OUT and connect this output to Spectrum Analyzer RF
INPUT. Set the Spectrum Analyzer as follows:
CENTER FREQ
REF LEVEL
ATTEN
LOG SCALE
RES BW
VBW
FREQ SPAN
SWEEP TIME
MARKER ENTRY
MARKER ENTRY
MARKER MODE
5. The M/N output frequency indicated on Spectrum Analyzer should be 197.419 MHz o1 count.
To display the frequencies that the processor programs, press [SHIFT]
[Ml] on the DUT. It will display from left to right: the M divide number, the
N divide number, the M/N output frequency, and the 20/30 output fre-
quency.
BOTTOM VIEW
A32/A33
M/N VGO AND
OUTPUT
EZZI
0
5-24 Adjustments
NOTE
A59
7
Figure 5-8. Location of M/N Loop Adjustments
Press PEAK SEARCH
Press SIGNAL TRACK
A32133
A33J1
355-395 MHz
OUT
197.419 MHz
3dBm
+20dB
. . 1 dB/DIV
300 Hz
. ..
300 Hz
5 kHz
1 SEC.
Press MKR
CF
.. —~
A33J2 A32A2C1
M/N OUT FREC ADJ
A32TP1
TUNE
A32A2C5
PWR
A33J3
HP 8340B/41B