Power Measurements - HP 8481H Operating And Service Manual

Operation HP 8481H/82H
Table 3. HP 8481H/82H Calibration Factor
Uncertainty at 1 //W
(RSS) Probable
Uncertainty (%)
(RSS) Probable
Uncertainty (%)
HP 8481H
Frequency(GHz)
HP 8482H
Frequency(MHz)
1.9% 1.6% 1.0 GHz
0.1 MHz
2.0 GHz 1.7 0.3 MHz 1.6
4.0 GHz
1.0 MHz 1.8 1.6
6.0 GHz 1.8 3.0 MHz 1.6
8.0 GHz 2.0
10.0 MHz 1.6
10.0 GHz 2.2 30.0 MHz 1.7
0 (ref)
12.0 GHz 2.4 50.0 MHz
14.0 GHz 2.8 100.0 MHz 1.9
16.0 GHz 3.0 300.0 MHz 1.9
18.0 GHz
1000.0 MHz 3.1 1.7
2000.0 MHz
1.7
4000.0 MHz 1.8
Power Measurements
To correct for varying responses at different frequencies a cal factor
chart is included on the Power Sensors. To use the cal factor at
the frequency of interest, adjust the power meter's CAL FACTOR
control according to the instructions in your power meter's operating
manual.
SWR (Reflection Coefficient) Performance Test
The maximum SWR and reflection coefficient or the Power Sensor
are listed in table 3. For making these measurements, use equipment
which has measurement uncertainties not exceeding those shown in
the table.
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