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Performance Tests
1. Conversion Loss
CAUTION
Turn off the ac power on the 8349B Amplifier prior to connecting or
disconnecting the source module interface cable.
Turn off the ac power on the 11974-60028 Preselector Power Supply when
either connecting or disconnecting the 11974 from it.
On the 11974 rear panel, set the instrument select switches to the
appropriate settings before applying power to the 11974.
8. Turn off the RF power on the synthesized sweeper and zero the 432A Power Meter.
9. Enter the appropriate millimeter-wave source module frequency multiplication factor
into the synthesized sweeper by pressing
following keys (on the synthesized sweeper) for the appropriate band listed below:
for an 11974A:
2 Hz
for an 11974Q:
3 Hz
for an 11974U:
3 Hz
for an 11974V:
4 Hz
10.Set the synthesized sweeper for a CW signal at the frequency listed below:
for an 11974A: 26.5 GHz
for an 11974Q: 33.0 GHz
for an 11974U: 40.0 GHz
for an 11974V: 50.0 GHz
11.Set the synthesized sweeper frequency step to 500 MHz by pressing
12.Activate external leveling on the synthesized sweeper by pressing
13.Adjust the output power of the synthesized sweeper for a reading of approximately
0 dBm on the 8349B display.
14.Set the spectrum analyzer to the appropriate millimeter band by using the appropriate
key sequence listed below:
SHIFT ⇑ ⇑
for an 11974A:
SHIFT ⇑ ⇑ ⇑
for an 11974Q:
SHIFT ⇑ ⇑ ⇑ ⇑
for an 11974U:
SHIFT ⇑ ⇑ ⇑ ⇑ ⇑
for an 11974V:
110
and then press the
SHIFT START FREQ
500 MHz.
SHIFT CF
.
XTAL
Chapter 4
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