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HP4402.book : chapt5_2.fm 8 Wed Apr 23 15:29:05 1997
Specifications
Power Meter Supplemental Characteristics
5-8 HP EPM-442A User’s Guide
Table 5-3: Power Sensor Specifications
1. Within 1 hour after zero set, at a constant temperature, after a 24
hour warm-up of the power meter.
2. The number of averages at 16 (for normal mode) and 32 (for x2 mode),
at a constant temperature, measured over a 1 minute interval and 2
standard deviations. For HP ECP-series power sensors the
measurement noise is measured within the low range. Refer to the
relevant power sensor manual for further information.
Power Sensor Zero Drift
1
Measurement Noise
2
HP 8481A
<
±10 nW
<
110 nW
HP 8481B
<
±10 µW
<
110 µW
HP 8481D
<
±4pW
<
45 pW
HP 8481H
<
±1 µW
<
10 µW
HP 8482A
<
±10 nW
<
110 nW
HP 8482B
<
±10 µW
<
110 µW
HP 8482H
<
±1 µW
<
10 µW
HP 8483A
<
±10 nW
<
110 nW
HP 8485A
<
±10 nW
<
110 nW
HP 8485D
<
±4pW
<
45 pW
HP R8486A
<
±10 nW
<
110 nW
HP R8486D
<
±6pW
<
65 pW
HP Q8486A
<
±10 nW
<
110 nW
HP Q8486D
<
±6pW
<
65 pW
HP W8486A
<
±40 nW
<
450 nW
HP 8487A
<
±10 nW
<
110 nW
HP 8487D
<
±4pW
<
45 pW
HP ECP-E18A <± 15 pW
<
70 pW
HP ECP-E26A <± 15 pW
<
70 pW