Publication 21555, Rev. E, September 2002 4-1
4
Calibration & Testing
4.1 Introduction
Information in this chapter is useful for periodic calibration and testing of the 58542 VXIbus Universal
Power Meter and its power sensors. These tests can also be used for incoming inspection testing when
the instrument is first received. If the 58542 power meter has not been previously used, please review
Section2.3.
4.2 Equipment Required
The following equipment is required to complete the performance test procedures:
Description Representative Model Key Characteristics
CW Thermistor Power Meter HP432A V
RF
and V
COMP
available externally
Thermistor Mount HP 478A-H75 ≤1.07 VSWR @50MHz (30dB return loss)
Digital Voltmeter (DVM) Fluke 8842A ±0.05% accuracy and 1 µV resolution
Directional Coupler, 10dB Mini Circuits ZFDC-10-110dB ≤1.15SWR @50MHz
Step Attenuator, 0 to 90dB in 10dB
increments
Weinschel AC118A-90-33 ≤1.15SWR @50MHz ±0.1dB attenuation
RF Source (Signal Generator) (High Power) Wavetek 2405 OptionXP +22dBm @50MHz
Low Pass Filter Integrated Microwave 904881 >30dB attenuation @100MHz
GPIB Controller for IBM PC National PC2/2A With driver software
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