Series 8500A Peak Power Meters
1-4 Manual 20790, Rev. C, November 1998
1.2 System Specifications
Frequency Range
30 MHz to 40 GHz depending on detectors
(See the Detector Specifications in Appendix D)
Power Range
(Direct input to detector):
Pulse Mode: -20 to +20 dBm
CW Mode: -40 to +20 dBm
Absolute Maximum Limit: +23 dBm (200 mW)
Accuracy
The uncertainty of microwave power measurements depends on
several factors, the most important is the effective mismatch of
both the power detector and the RF source. Excluding mismatch
effects, the measurement uncertainties of the instrument and its
power detectors are as follows:
Calibrator Power Uncertainty
(at 0 dBm): ±1.5% (0.065 dBm)
Linearity after Automatic
Calibration: ±3% (at stable temperature)
Temperature coefficient of
linearity at ambien t±5 °C, CW
and Peak, typical: >-10 dBm negligible, 0 to 50 °C
<-10 dBm ±0.5%/deg.C, 15 to 50 °C
±1.0%/deg.C, 0 to 15 °C
(The instrument indicates if the ±5 °C calibration range is
exceeded)
Uncertainty
(due to zeroing and noise): CW: <±10 nW, 15 to 50 °C (Avg. = 500) <±20 nW, 0 to 15 °C
Peak: <±3.5 mW, 15 to 50 °C (Avg. = 100) <±5.0 mW, 0 to 15 °C
Single Pulse: <±15 mW, 15 to 50 °C (typical)
<±30 mW, 0 to 15 °C (typical)
Time Base Range
Graph Mode: 1.2 ns/DIV to 20 ms/DIV (12 ns to 20 0ms time window using
either the Data Entry keyboard or the spin knob)
Resolution: 0.1 ns
Accuracy: 0to10ms,±0.2%±1ns;10msto5ms,±0.1%;5msto
200 ms, ±0.01%
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