Procedure - Keysight 8990B Service Manual

Equipment or high power verification (>+10 to +20 dBm):
– PSG analog signal generator (E8257D)
– Power sensor (N8481A/N8487A)
– Power meter (N1914A/E4417A)
– PEAK Power Analyzer and sensor [DUT] (8990B and N1923A/N1924A)
– Power amplifier
– Directional RF coupler
– Low-pass filter (for reducing the high harmonic content of the test signal to

Procedure

Low power verification
– The accuracy error measured in this verification includes a combination of
NOTE
– The maximum input power to the 11667A splitter is 0.5 W or +27 dBm.
– To set the sensor mode (Average/Normal mode), send the SENS:DET:FUNC
– To set the sensor video bandwid th, send the SENS:BAND:VID OFF command.
– To set the sensor video bandwidth, send the CHAN 1|4:BWID OFF command.
– The hardware paths for the OFF and HIGH video band width are identical,
– Verification for the sensor's Normal mode can be performed in the Off video
Keysight 8990B Service Guide
approximately -30 dBm for the 2nd harmonics)
errors for linearity, calibration factor, and temperature compensation.
AVER|NORM command. (Use with Power sensor and Power meter)
(use with Power sensor and Power meter)
(use with PEAK Power Analyzer and sensor [DUT])
while the paths for the LOW and Low video band widths are identical.
bandwidth settings.
Performance Verification and Adjustments 1
25