Operation and Service Guide 1
Keysight E4412A and E4413A Operating and Service Guide 27
Performance Test
Voltage standing wave ratio (VSWR) performance verification
VSWR is a measure of how efficiently radio frequency (RF) power is transmitted
from an RF power source. In real systems, mismatched impedances between the
RF source and load can cause some of the power to be reflected towards the
source and vary the VSWR.
This performance verification requires the following equipment.
– For low power S11 verification (0 dBm):
– PNA microwave network analyzer (N5225A)
– Calibration kit (85052B/C, 85054B)
– For high power S11 verification (17 dBm):
– PNA microwave network analyzer (N5225A with Option 217)
– Calibration kit (85052B/C, 85054B)
– Power amplifier
– Coupler (5087-7760 / 5087-7793)
– Fixed attenuators (8490D)
– Power meter (N1913A/N1914A)
– Power sensor (N8481H/N8485A with Option 033)
Procedure
Low power S11 verification (without amplifier)
1 Turn on the network analyzer and allow it to warm up for approximately an
hour.
2 Set the start frequency of the network analyzer to 10 MHz or 50 MHz and the
stop frequency to 18 GHz for E4412A or 26.5 GHz for E4413A or 33 GHz for
H33 option. For the calibration, power must be 0 dBm and 17 dBm.
3 Calibrate the network analyzer using the appropriate calibration kit. Perform
calibration for the open, short, and load circuits of the network analyzer.
4 After calibration, connect the E-Series E4412A/E4413A power sensor to the
test port of the network analyzer. Set the format for data trace to SWR.
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