HP 8340B Manual page 236

5-5.
20/30 LOOP PHASE LOCK, A36,
ASS, ASS,
A40, AND A43 (Cont'd)
BOTTOM VIEW
A39
L-r-1
^[
rv
c ^
X ^
r
/
r
f
\
L11 L17 L16
PLL3VCOADJ 160 MHz PEAK 160 MHz PEAK
C49
(Selected Value)
A39
PLL3 UP
CONVERTER
Figure 5-11.
Location of PLL3 Adjustments
45.
Set the Function Generator controls as follows:
FUNCTION
......................
FREQ
................ -....„„
.
AMPL
- „
,.....,.-.„„......„......
)ectrum Analyzer controls as follows:
1NSTR PRESET
.....................
START FREQ
„ „ . .
..........
STOP FREQ
...
........
.
REFERENCE LINE
... ......,..„.„„„
RES BW
.„„.„....,„......,„„... ..
VIDEO BW
...................
SWEEP TIME
...... -....
..„..„„-
SCALE
... ..... ...........
MARKER MODE
....„„„.„
......
.„.......„„„„,...„„..
Sine Wave
.................. -...
20 kHz
....„„„ ...... ......
-77 dBm
...........................
Press
.„„„„.,
.„.....-..„„„„.
...
10
kHz
... ...
......
.
.
60 kHz
.....,--...... ..
0
dBm
.. ..
...........
...
300 Hz
........... ...... ..
1 kHz
...... ..... ......
1.2
SEC
„
...„„„„
.......
-....
10 dB/DIV
.......
. .
NORMAL
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
)
Adjustments
HP 8340B/41B