Measurement Noise; Table 5-2 Noise Multiplier; Table 5-3 Power Sensor Specifications - Agilent Technologies E4418B User Manual

5 Specifications

Measurement Noise

Power sensor dependent (refer to
Averaging effects on measurement noise. Averaging over 1 to 1024
readings is available for reducing noise.
measurement noise for a particular power sensor with the number of
averages set to 16 for normal mode and 32 for x2 mode. Use the "Noise
Multiplier" for the appropriate mode (normal or x2) and number of
averages to determine the total measurement noise value.
For example, for an Agilent 8481D power sensor in normal mode with the
number of averages set to 4, the measurement noise is equal to:
(<45 pW x 2.75) = <124 pW

Table 5-2 Noise Multiplier

Number of Averages
Noise Multiplier
(Normal Mode)
Noise Multiplier
(x2 mode)
Table 5-3 Power Sensor Specifications±
162
1 2 4
5.5 3.89 2.75
6.5 4.6 3.25
Power Sensor
3
Agilent 8481A
3
Agilent 8481B
3
Agilent 8481D
3
Agilent 8481H
3
Agilent 8482A
3
Agilent 8482B
3
Agilent 8482H
3
Agilent 8483A
3
Agilent 8485A
3
Agilent 8485D
3
Agilent R8486A
Table 5- 2
Table 5- 3
8 16 32
1.94 1.0 0.85
2.3 1.63 1.0
1
Zero Drift
<±10 nW
<±10 mW
<±4 pW
<±1 mW
<±10 nW
<±10 mW
<±1 mW
<±10 nW
<±10 nW
<±4 pW
<±10 nW
and Table 5- 3).
provides the
64 128 256
0.61 0.49 0.34
0.72 0.57 0.41
Measurement Noise
<110 nW
<110 mW
<45 pW
<10 mW
<110 nW
<110 mW
<10 mW
<110 nW
<110 nW
<45 pW
<110 nW
E4418B Power Meter User's Guide
512 1024
0.24 0.17
0.29 0.2
2