HP 8901B Operation And Calibration Manual page 369

Model 8901B Performance Tests
Performance Test 8
POWER METER TESTS
Specification
Characteristic
RF POWER
RF
Range Linearity(')
RF
Range-to-Range Change Error(')
Zero Set(2)
Performance Limits
f0.02
dB
f0.03
dB
f0.02 dB/RF range change ..om reference range
f0.5% of
full
scale
f
1
count
Conditions
RF
ranges
2
to 5
RF
range
1
on lowest range
Using Recorder Output. Using front-panel display, add f l count o f least-significant digit.
(2)
Decrease
by
a factor
of
ten for each higher range.
Description
A power meter range calibrator is used to check the range-to-range error, in-range linearity, and zeroing
integrity of the power meter circuits.
RF
power ranging is simulated by a precision voltage divider in
the range calibrator.
Equipment
Range Calibrator..
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HP
11683A
Procedure
Zero
Set
1. Connect the power meter output
of the range calibrator to the Modulation Analyzer's SENSOR
2.
On the range calibrator, set the function
to
standby, polarity
to
normal, and range to 1 mW.
3. On the Modulation Analyzer, press the blue key then press INSTR PRESET (the AUTOMATIC
OPERATION key) to preset the instrument. Press RF POWER. Press ZERO and wait for the
instrument to zero.
input.
NOTE
If Error
15
is
displayed, press
100
then the blue key then the % CAL
FACTOR key (the MHz key) to enter a dummy calibration factor of
100%.
4.
On the Modulation Analyzer, key in the special functions indicated in the following table. For
each setting the Modulation Analyzer's display should read as indicated in the table. (Take the
average of several readings. Ignore the RECAL and UNCAL annunciators.)
rev. 13 JUL87 Performance Test 8 4-29