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10. IF Gain Uncertainty Test
Equipment
Procedure 1.
10 dB Gain Steps
Note
2-34 Performance Tests
Frequency Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 3335A
Adapter, Type N (m) to BNC (f) . . . . . . . . . . . . . . . . . . . . . . . . HP 1250-0780
Press (
2.
Connect CAL OUTPUT to SIGNAL INPUT.
3.
Press Cm] 8. Adjust AMPTD CAL for a MARKER amplitude of
-10.00 dBm 50.02 dB.
4.
Press
).
PRESET
5.
Set the frequency synthesizer for an output frequency of 20.0010
MHz and an output power level of -2.0 dBm. Set the amplitude
increment for 10 dB steps.
6.
Connect the equipment as shown in Figure 2-17.
7.
Key in analyzer settings as follows:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20.001
)
FREQUENCY
) . . .
SPAN
8
Press MARKER
(
PEAK
(
) to
CENTER FREQUENCY
9
Set analyzer as follows:
LOG
10.
Press MARKER
11.
Press (SHIFT),(m]I to permit extended reference level settings.
12.
Set the analyzer
(
REFERENCE
synthesizer amplitude according to Table 2-12 settings. (Use the
frequency synthesizer @J for 10 dB steps.) At each setting, note
the
MKR A amplitude displayed in the upper right corner of the
analyzer display (deviation from
the
record it in
table. See Figure 2-18.
After measurement at the
as indicated in 'lhble 2-12.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kHz
or adjust
center signal trace on display.
. . . . . . . . . . . . . . . . . . . . . . . 1 dB
dB/DIv] . . .
),
SEARCH
the
0 dB reference setting) and
= -70 dBm setting, press
(
)
REFERENCE LEVEL
MHZ
and frequency
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