Giga-tronics 8650A Series, Руководство по эксплуатации

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Manual 31470, Rev. E, April 2001 4-1
4
Performance Verification
4.1 Introduction
This chapter defines procedures for performance verification of the Series 8650A Universal Power
Meters.
Refer to Appendix B of this manual for power sensor selection and calibration.
4.2 Equipment Required
Table 4-1 lists the equipment required for performance verification of the Series 8650A Power Meters.
Table 4-1: Required Equipment List
Description Representative Model Key Characteristics
CW Thermistor Power Meter HP 432A V
RF
and V
COMP
available externally
Thermistor Mount HP 478A-H75
≤
1.07 VSWR @ 50 MHz
(30 dB return loss)
Accuracy
±
0.5% @ 50 MHz
Digital Voltmeter (DVM) HP 34401A
±
0.05% accuracy & 1
µ
V resolution
Directional Coupler, 10 dB Mini Circuits
ZFDC-10-1 10 dB
≤
1.15 SWR @ 50 MHz
Step Attenuator, 0 to 90 dB
in 10 dB increments Weinschel
Model AC 118A-90-33
≤
1.15 SWR @ 50 MHz
±
0.1 dB attenuation
RF Source (Signal Generator)
(High Power) Wavetek Model 2405
Option XP +22 dBm @ 50 MHz
Low Pass Filter Integrated Microwave
Model 904 881 >30 dB attenuation @ 100 MHz
GPIB Controller for IBM PC AT-GPIB/TNT With driver software
Frequency Counter B+K Precision 1856B
≥
1.5 GHz, 50 ppm,
≥
6 digit resolution