Chapter 4
119
Performance Tests
3. Multiple Response Rejection Test
P
e
rf
orm
a
nce
T
est
s
CAUTION
When you are using an 11975A Amplifier with an 11974, you must set the
amplifier rear-panel ALC switch to ON before you connect the amplifier to the
test setup. If the ALC switch is left in the OFF position, the amplifier output
power is high enough to destroy the mixer diodes.
4. On the 11975A Amplifier, set the rear-panel ALC switch to ON, then connect the 8481A
Power Sensor to the free end of the cable installed on the OUTPUT connector of the
amplifier. Set the 436A Power Meter Cal Factor % to the appropriate value for a
frequency of 5 GHz.
5. Adjust the amplifier OUTPUT POWER LEVEL for a reading of +15.2 dBm
±
0.1 dBm on
the power meter.
6. Connect the equipment as shown in
CAUTION
Turn off the ac power on the 8349B prior to connecting or disconnecting the
source module interface cable.
Turn off the ac power on the 11974-60028 Preselector Power Supply prior to
connecting or disconnecting the 11974.
On the 11974 rear panel, set the instrument select switches to the
appropriate settings before applying power to the 11974.
7. Enter the appropriate millimeter-wave source module frequency multiplication factor
into the synthesized sweeper by pressing
SHIFT
and
START FREQ
and entering the
corresponding value for the band listed below:
for an 11974A:
2
Hz
for an 11974Q:
3
Hz
for an 11974U:
3
Hz
for an 11974V:
4
Hz
8. 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
9. Activate external leveling on the synthesized sweeper by pressing
XTAL
.
10.Adjust the output power of the synthesized sweeper for a reading of approximately
0 dBm on the 8349B display.
Содержание 11974 Series
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Страница 8: ...7 General Information 1 General Information ...
Страница 28: ...27 Installation 2 Installation ...
Страница 47: ...46 Chapter2 Installation Returning Equipment for Service Installation ...
Страница 48: ...47 Operation 3 Operation ...
Страница 57: ...56 Chapter3 Operation Operating Hints Operation Figure 3 4 Setup Configuration for Remote Location of an 11974 ...
Страница 97: ...96 Chapter3 Operation Using 8561A 62A 62B Spectrum Analyzers Operation ...
Страница 98: ...97 Performance Tests 4 Performance Tests ...
Страница 107: ...106 Chapter4 Performance Tests Performance Test Procedures Performance Tests Figure 4 1 Performance Tests Setup ...
Страница 148: ...147 Safety and Regulatory Information 5 Safety and Regulatory Information ...