HP 8340B Manual page 143

5-5. 20130 LOOP PHASE LOCK, A36, A38, A39, A40, AND A43 (Cont'd)
BOTTOM VIEW
A39
PLL3 UP
CONVERTER
Set the Function Generator controls as follows:
45.
FUNCTION
FREQ
.
AMPL
46. Set the Spectrum Analyzer controls as follows:
INSTR PRESET
START FREQ
STOP FREQ
REFERENCE LINE
RES BW
VIDEO BW
SWEEP TIME
SCALE
MARKER MODE
47. Set the Spectrum Analyzer Marker to 20 kHz.
48. Connect the active probe to the Spectrum Analyzer input and connect the probe to the output of the 40 kHz
LPF on A36 (see Figure 5-13). (This is the terminal on A36L7 next to A36C24.)
5-32 Adjustments
1
Figure 5-11. Location of PLL3 Adjustments
.
A39
L17
Lii
160 MHz PEAK 160 MHz PEAK
PLL3 VCO ADJ
Sine Wave
—7.7 dBm
10 dB/DIV
NORMAL
Li6
(Selected Value)
PEAK
kHz
20
Press
10kHz
60 kHz
0 dBm
300 Hz
1 kHz
i.2 SEC
HP 8340B/41B