Specifications

Power Meter Supplemental Characteristics

Table 5-3: Power Sensor Specifications

Power Sensor

Zero Drift1

Measurement Noise2

 

 

 

HP 8481A

<±10 nW

<110 nW

 

 

 

HP 8481B

<±10 μW

<110 μW

 

 

 

HP 8481D

<±4 pW

<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

<±4 pW

<45 pW

 

 

 

HP R8486A

<±10 nW

<110 nW

 

 

 

HP R8486D

<±6 pW

<65 pW

 

 

 

HP Q8486A

<±10 nW

<110 nW

 

 

 

HP Q8486D

<±6 pW

<65 pW

 

 

 

HP W8486A

<±40 nW

<450 nW

 

 

 

HP 8487A

<±10 nW

<110 nW

 

 

 

HP 8487D

<±4 pW

<45 pW

 

 

 

HP ECP-E18A

<± 15 pW

<70 pW

 

 

 

HP ECP-E26A

<± 15 pW

<70 pW

 

 

 

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.

5-8

HP EPM-442A User’s Guide