46 Chapter 2
Performance Test
9. DYNAMIC ACCURACY TEST
9. DYNAMIC ACCURACY TEST
Description
The Dynamic Accuracy test consists of a combination of LF Linearity test with
Compression test.
LF Linearity Test
This test checks the dynamic accuracy of the E5071C. The dynamic accuracy test consists
of two subsets which are Low Frequency subset test at 1.195 GHz and at 1 MHz and High
Frequency subset test. Low Frequency subset are tested at 1.195 GHz for each receiver port
using the Agilent Z5623A (with option H01) Dynamic Accuracy Test Kit and are tested at
1 MHz for each receiver port using the Agilent 8496G step attenuator. The 1.195 GHz
source signal of the E5071C goes through the Z5623A's first attenuator variable from 0 dB
to 11 dB in 1 dB steps and second attenuator variable up to 100 dB in 10 dB steps and is
measured with the receiver port. The test procedure checks the measured receiver-input
power for each 5 dB increment in the range from 10 dBm to 60 dBm. The ratios of the
measured receiver-input powers to the reference input level of -10 dBm are calculated and
compared to the attenuation values of the Z5623A. The 1.195 GHz signal flow is split with
a power splitter present between the two attenuators in the Z5623A and measured with an
external power meter to calibrate the attenuated power level.
Compression Test
This is a test to verify the linearity of a receiver at high power levels. Receiver
non-linearity at high power levels is often termed compression. This test measures the
non-linearity of the receiver at a specified power level relative to a power level within its
linear range.
NOTE Before starting this test, input and store the calibration data of Power Sensor to Power
Meter.
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