HP 8901B Operation And Calibration Manual page 166

Operation Model 8901B
Signal Generator
Frequency (MHz)
2
4
8
16
25
50
100
200
400
800
6. Press the ZERO key.
K-
-
- - n
should be displayed for approximately 15 seconds, 0.0 00 W
should then be displayed briefly, and then a value less than 3.0 -06 W (that is, 3.0
pW)
should
be displayed. (Ignore the RECAL and UNCAL annunciators
if
they are displayed.)
7. Press the CALIBRATE key. When a value appears in the display, press the Blue key and SAVE
CAL key (the CALIBRATE key). The display should show between 0.999 -03 and 1.000 -03 W
(that is, 0.999 and 1.000 mW) or between 999 -06 and 1000 -06 W (that is, 999 and 1000 pW).
The RECAL and UNCAL annunciators should be off. 'hm off the calibrator by pressing the
CALIBRATE key again.
Frequency Difference
Limits
(fHz)
40
50
70
100
130
230
430
830
1600
3200
RF Power Check
8. Set the signal generator to 100 MHz CW a t -10 dBm (as measured on its level meter).
9. Connect the input of the sensor module to the RF output of the signal generator. Connect
the MODULATION OUTPUT/AUDIO INPUT to the vertical input of the oscilloscope. (See
Figure 3-7.)
10. Press the LOG/LIN key to display power in dBm. The Modulation Analyzer should display
between -11.00 and -9.00 dBm.
RF Peak Level Check
11. Key
i n 35.0 and press the SPCL key (uses a peak detector to measure power). The Modulation
Analyzer should display between -16.00 and -6.00 dBm.
Frequency Check
12. Press the FREQ key. Key in 7.1 and press the SPCL key to set the RF frequency resolution
to
10
H z .
Set the signal generator's frequency as shown in the following table. For each frequency, allow
the Modulation Analyzer to tune to the signal then compare the signal generator's frequency
display with the Modulation Analyzer's display. The two displays should agree within the
limits indicated.
I
Set the signal generator frequency to 50 MHz. When the Modulation Analyzer has -med to the
signal, press the MHz key to disable the automatic tuning and enable manual tuning. Press the S
(Shift) key and the FREQ ERROR key (the FREQ key). The Modulation Analyzer should display
between
-1
and 1 kHz.
14. Key in 100 and press the
ft
kHz key. The Modulation Analyzer should display between -101 and
-99 kHz. Key in 7.0 and press the SPCL key to return the RF frequency resolution to automatic
selection.
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