Giga-tronics 8003, Руководство по эксплуатации

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Manual 20791, Rev. C, June 2001 A-1
A
Power Sensors
A.1 Introduction
This appendix contains the selection and specifications data for the Giga-tronics power sensors used
with the 8003 Precision Scalar Analyzer.
Giga-tronics power sensors contain balanced zero-biased Schottky diodes for power sensing.
Input power in excess of +23 dBm (200 mW, which is the 100%
average for standard and pulse sensors) can degrade or destroy
these diodes. Diodes degraded or destroyed in this manner will
not be replaced under warranty. Destructive signal levels are
higher for high power, true rms, and low VSWR sensors. When
connecting power sensors to other devices, do not turn the body
of the sensor in order to tighten the RF connection. This can dam-
age the connector mating surfaces.
A.2 Power Sensor Selection
Standard sensors include the 803XXA Series for CW signals, the 80500 Series CW Return Loss Bridges,
and the 8033XA Series True RMS sensors.
Giga-tronics True RMS sensors are recommended for applications such as measuring quadrature
modulated signals, multi-tone receiver intermodulation distortion power, noise power, or the
compression power of an amplifier. These sensors include a pad to attenuate the signal to the RMS
region of the diode’s response. This corresponds to the -70 dBm to -20 dBm linear operating region of
Standard CW Sensors. The pad improves the input VSWR to <1.15 at 18 GHz.
High Power (1, 5, 25 & 50 Watt) and Low VSWR sensors are also available for use with the 8003. Table
A-1 lists the Giga-tronics power sensors used with the 8003. Refer to applicable notes on page A-3.
CAUTION