Model 8901B Performance Tests
POWER REFERENCE
Power
Output
Power
Output
Accuracy
Performance
Test 6
1
mW
3tl.270
worst case: for
1
year:
0
to
55OC
POWER REFERENCE TEST (USING REFERENCE COMPARISON)
Specification
Characteristic
I
Performance
Limits
1
Conditions
Description
The power from an external
1
mW power reference
is
measured with a power sensor and the power
meter
of
the Modulation Analyzer. The same power meter and sensor are then used
to
measure the
power from the Modulation Analyzer’s power reference.
NOTE
Due
to accuracy limitations
of
this test method, the power level can only
be verified to within
&1.9%.
Greater accuracy can be obtained
by
using a
recently calibrated external power reference
or
by
following the procedure in
Performance Test 7-Power Reference Accuracy
(Using
DC Substitution).
Equipment
Power Reference
..........................................................
HP 435A Opt KO5
Sensor Module
..................................................................
HP 11722A
Procedure
1.
Connect the input of the sensor module (or a compatible power sensor connected
to
the
2. On the Modulation Analyzer, press RF POWER. Press RATIO and check
that
LOG/LIN
is
in
3.
Connect the power sensor/input switch
to
the CALIBRATION RF POWER OUTPUT connector
Modulation Analyzer’s SENSOR input)
to
the output of the external power reference.
the linear mode. (The display should read between 99.9 and 100.1% REL.)
of the Modulation Analyzer. The display should read 98.1 and 101.9% REL.
RF Power Reference Accuracy: 98.1
101.9% REL
Performance Test
6
4-25
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