Agilent Technologies U2000 Series Operating And Service Manual page 75

For U2000/1B
1
Range
–8 dBm to 15 dBm
10 dBm to 23.5 dBm
22.5 dBm to 28 dBm
26 dBm to 44 dBm
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 1 for Normal speed, gate length of 2.27 ms, 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
Specifications and Characteristics"
Effect of Time-Gating and Averaging on Normal Mode Measurement Noise
The normal mode measurement noise will depend on the gate length
(time- gated period in second) and the number of averages. The noise can
be approximately calculated with the following equations.
If the gate length is <2.73 µs, use Equation 1:
Noise
Otherwise, use Equation 2:
If the noise value obtained from Equation 1 or 2 is lower than the measurement noise
N O T E
specification, use the value as specified in the measurement noise table.
U2000 Series Operating and Service Guide
,
Zero Set (Internal) Zero Set (External)
47 µW
530 µW
30 mW
32 mW
on page 66.
= Noise per sample
Noise = Noise per sample
Specifications and Characteristics
Zero Drift
43 µW 25 µW
480 µW 230 µW
27 mW 19 mW
34 mW 24 mW
1
× ----------------------------------------------------
Number of averages
1
× ----------------------------------------------------
Number of averages
Measurement
2
3
Noise
28 µW
300 µW
20 mW
21 mW
"Normal Mode Key
4
⎛
× ---------------------------------------------------- -
4
⎝
⁄ (
Gate length
3
Noise Per
4
Sample
90 µW
1 mW
55 mW
85 mW
⎞
⎠
)
0.68µs
57