Power Accuracy; Table 3-1 Average Only Mode Power Accuracy (With Exclusions); Table 3-2 Normal Mode Power Accuracy (With Exclusions) - Keysight Technologies U2000 Series Operating And Service Manual

3 Specifications and Characteristics

Power Accuracy

This specification is valid only after zeroing and calibration of the power
sensor at ambient environmental conditions.
Table 3-1 Average only Mode Power Accuracy
Table 3-2 Normal Mode Power Accuracy
With conditions as follows:
• After zeroing
• Number of averages = 1024
1 The accuracy is essentially a combination of linearity, instrumentation accuracy, and traceability to
2 The accuracy for –7 dBm to +1 dBm (U2000/1/2A), +3 dBm to +11 dBm (U2000/1/2H), and +23
3 It is strongly advisable to perform external zeroing on the U2000 Series USB power sensor for
48
Model
U2000/1/2/4A –60 dBm to +20 dBm
U2000/1/2H –50 dBm to +30 dBm
U2000/1B –30 dBm to +44 dBm
Model
U2000/1/2A –30 dBm to +20 dBm
U2000/1/2H –20 dBm to +30 dBm
U2000/1B 0 dBm to +44 dBm
3
and 30 minutes of power- on warm- up
absolute accuracy at 50 MHz, 0 dBm. Note: mismatch uncertainty, cal-factor uncertainty, and
power level dependent terms (zero set, drift, and noise) are excluded in this specification and
specified elsewhere in this guide.
dBm to +31 dBm (U2000/1B) power level will be dominated by zero set and measurement noise.
For overall accuracy, refer to the measurement uncertainty calculator which is available on the
Keysight Technologies Web site.
power measurement level below –30 dBm (U2000/1/2A), –20 dBm (U2000/1/2H), and 0 dBm
(U2000/1B) for accurate measurements. During the external zeroing process, the RF input signal
must be switched off or the device-under-test disconnected from the U2000 Series USB
power sensor.
1
Accuracy
Power Level
25 °C ±10 °C
1,2
(with exclusions)
Accuracy
Power Level
25 °C ±10 °C
U2000 Series Operating and Service Guide
(with exclusions)
Accuracy
0 °C to 55 °C
±3.0% ±3.5%
±4.0% ±5.0%
±3.5% ±4.0%
±
4.0%
±
5.0%
±
4.5%