
10. Frequency Response Test
LEVELING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INT
78. On the synthesized sweeper, press (POWER LEVEL] and adjust the
ENTRY knob for a power meter indication of -20.00
dBm
f0.03
dB
at 321.4 MHz (with the power meter RANGE HOLD switch
off).
79. On the synthesized sweeper, key in [POWER LEVEL) (JJ to decrease
the output power by 10.0
dB
to -30
dBm.
80. Disconnect the jumper cable from between the spectrum analyzer
front panel 321.4 MHz IF INPUT and IF OUTPUT connectors.
81. Disconnect the low-loss microwave test cable from the power
meter/power sensor, and connect the test cable to the spectrum
analyzer front panel 321.4 MHz IF INPUT connector.
82. On the spectrum analyzer, key in
@??i%),
ISHIFT)
@)
(KSU),
6 Hz,
ISHIFT)
[REFERENCE
LEVEL)
(KSZ) 0
dB,
setting the K-band
conversion loss to 30
dB.
Set the spectrum analyzer controls as
follows:
RES BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 MHz
REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+3
dBm
LOG SCALE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 dB/DIV
83. On the spectrum analyzer, press MARKER
[????%Q
The
MARKER indication should be 0.00
dBm
fl.OO
dB.
Subtract 0.00
dBm
from the MARKER amplitude, and record the result.
321.4 MHz IF INPUT Sensitivity
dB
84. Disconnect the low-loss microwave test cable from the spectrum
analyzer front panel 321.4 MHz IF INPUT connector. Reconnect
the jumper cable between the spectrum analyzer front panel
321.4 MHz IF INPUT and IF OUTPUT connectors.
85. On the spectrum analyzer, key in (SHIFT)
m
(KSU), 6 Hz,
(SHIFT)
[REFERENCE
LEVEL)
(KSZ) -12
dBm,
setting the K-band conversion
loss to 18
dBm
(default value).
2-44 Performance Tests
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