3 Specifications and Characteristics
48 U2000 Series Operating and Service Guide
For U2000/1B,
1 Condition: (i) 0 °C to 55 °C and (ii) 40 °C, 95% relative humidity.
2 Within one hour after zero set, at a constant temperature, after 24-hour warm-up of the power
sensor.
3 The number of averages at 16 for Normal mode, measured over one minute interval and two
standard deviations.
4 The Noise Per Sample specification is only applicable for gated power working range stated in
the
“Time-gated Measurements” table.
Range
1
Zero Set (Internal) Zero Set (External) Zero Drift
2
Measurement
Noise
3
Noise Per
Sample
4
–30 dBm to –5 dBm ±1.8 µW ±800 nW 200 nW 1 µW N/A
–8 dBm to 15 dBm ±2 µW ±2 µW 400 nW 1.5 µW 90 µW
10 dBm to 21 dBm ±12 µW ±10 µW 1.5 µW 15 µW 1 mW
19 dBm to 25 dBm ±2 mW ±1 mW 50 nW 650 µW 55 mW
23 dBm to 44 dBm ±4 mW ±2 mW 500 µW 1 mW 85 mW
The Zero Set, Zero Drift, and Measurement Noise specifications are only applicable to
U2000 Series USB power sensors with serial prefix as shown below:
U2000A Serial prefix MY480/SG480 and above
U2001A Serial prefix MY481/SG481 and above
U2002A Serial prefix MY482/SG482 and above
U2004A Serial prefix MY484/SG484 and above
For power sensors with earlier prefixes, refer to “Appendix A: Zero Set, Zero Drift, and
Measurement Noise” on page 70.
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