11. Down/Up Converter Adjustments
The adjustment of
WIDE GAIN is affected by
factory-select component
which sets the overall gain of
the
3 MHz Bandwidth Filter Assembly. If the
3 MHz
Bandwidth Filter Assembly or the
Step Gain Assembly is
repaired or replaced, perform Adjustment Procedure 10, “Step Gain
and 18.4 MHz Local Oscillator Adjustments” to select (if necessary)
before adjusting
WIDE GAIN (steps 14-17).
1. Position the spectrum analyzer upright as shown in Figure 3-50
and remove the IF-Display Section top cover.
2. Set the spectrum analyzer LINE switch to ON and press
3. Connect the spectrum analyzer CAL OUTPUT to the RF INPUT.
4. On the spectrum analyzer, key in [RECALL-] 8 and adjust the
front-panel AMPTD CAL control for a displayed signal level of
-10.00
5. On the spectrum analyzer, key in
9 and adjust the
front-panel FREQ ZERO control for maximum amplitude of the
displayed signal.
D O W N / U P C O N V E R T E R
Figure 3-51. Location of Down/Up Converter Adjustments
Perform steps 6 through 15 if the
Down/Up Converter Assembly
has been repaired, or if factory-select component
has
insufficient adjustment range. Otherwise, skip to step 17.
6. Set the spectrum analyzer LINE switch to STANDBY. Remove
Down/Up Converter Assembly from the IF-Display Section
and install on two extender boards.
7. Set the spectrum analyzer LINE switch to ON, and key in
(
CENTER FREQUENCY
)
100
M
HZ
,
SPAN
]
0
HZ,
1
[
REFERENCE LEVEL
)
-10
8. Connect the active probe to the probe power supply and the
RF INPUT of the second spectrum analyzer, as shown in Figure
3-50. On the second spectrum analyzer, key in
Adjustments
01
Содержание HP 8566B
Страница 71: ......
Страница 137: ...Test 19 1st LO Output Amplitude Steps Min Measured Max 4 1st LO OUTPUT Level 5 dBm 2 112 Performance Tests ...
Страница 169: ......
Страница 344: ......
Страница 351: ...23 Track and Hold Adjustments 25 Repeat steps 4 through 24 until no further adjustments are required Adjustments 3 211 ...
Страница 404: ...AIVI Wi AlAl ti2 W8 Figure 6 6 IF Section Front View 6 8 Major Assembly and Component locations ...