10. Dynamic Accuracy - 1.195 Ghz; Description; Test Equipment - Keysight E5071C ENA Service Manual

Performance Test

10. DYNAMIC ACCURACY - 1.195 GHz

10. DYNAMIC ACCURACY - 1.195 GHz

Description

This test checks the dynamic accuracy of the E5071C. The dynamic accuracy is
tested at 1.195 GHz for each receiver port using the Keysight Z5623A (with
Option H01) Dynamic Accuracy Test Set. 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. The following footnote
will be added to the measurement report to explain why the test does not test
points below -60 dBm:
Dynamic Accuracy of a receiver consists of three regions: Compression, Linear,
and Noise & Crosstalk. Measurements below -60 dBm are simply measuring
noise variability in the Noise & Crosstalk region rather than the true linearity of
the receiver! Since the receiver is linear by design at these lower levels, there is
no need to measure linearity below this threshold. Making measurements
above this threshold and below the compression region are sufficient to
warrant linearity performance of a receiver.

Test equipment

Test Equipment (DSG)
Power Meter (Power Meter 1)
Power Sensor 2
(Power Sensor RF 2)
Dynamic Accuracy Test Set
(Dynamic Accuracy Test Set 1)
Type-N Cable (2 required)
3.5 mm Cable (2 required)
6 dB Fixed Attenuator
(Attenuator Fixed 6dB 1)
Low Pass Filter
(Filter Low Pass 2.0 GHz 1)
Keysight E5071C ENA Network Analyzers
Model Number
1
N1914A
N8482A
Z5623A (Opt H01)
8120-8862
8121-1834
8491A (Opt 006)
TLP 2000-5E4F
Over 8.5 Up to
GHz 8.5 GHz
2 3
Option Option
X X
X X
X X
X
X
X X
X
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