HP 8340B Manual page 116

ON THE SPECTRUM ANALYZER:
Refer
to the figure below
for appropriate front panel
settings.
Connect the DUT's
10
MHz
REFER¬
ENCE OUTPUT
to the spectrum
analyzer's FREQ REFERENCE
input and set the
frequency reference
switch to EXT.
OTHER EQUIPMENT:
^CAUTJONJ
t CAUTION
j
Do not
apply
a
positive voltage to A30TP1.
Set the
HP 6294A power supply to —0.5V and connect
a
jumper from the
positive terminal and
ground. Plug
in
a
dual banana to
alligator clip test lead. Connect the ground side to instrument ground
and
the negative side to A30TP1 (TUNE).
Also
connect the
DVM
across these two points. Connect the
spectrum analyzer's
input to
A30J1. Slowly adjust the
power
supply until
TP1
reads approximately
-8.0
volts.
Proper Waveform Parameters
As shown in
figure
below, and within the following parameters:
Frequency
=
approximately 100 MHz
Power
=
approximately
0
dBm
±
3 dB
Harmonics
=
^
—20 dBc
After verifying
this
waveform, disconnect
the
power
supply and
DVM
from A30TP1.
PEF
5.0
dBm
RTTEN 20 dB
MKR
100.2
MHz
-0.20
dBm
10 dB'
5TRRT 75
MHz STOP
225
MHz
SNP 150
msec
RES BM 1
MHz
VBH
3 kHz
Figure B-4. A30J1 Output With
-8.0V Applied
to
A30TP1 (TUNE)
Reference Loop Assembly-Level Troubleshooting
HP 8340B/41B