Installation Guide 25
E444xAU IF Output Options E444xAU Options H20, H25 and H70
Performance Tests and Adjustments
Measuring the Bandwidth of the IF Outputs
This test measures the PSA's IF Outputs (standard 321.4 MHz and IF Output options)
amplitude response as a function of frequency (bandwidth). A signal is applied to the PSA
at 950 MHz to 1050 MHz. The 321.4 MHz If Output and 21.4 MHz IF Output bandwidth
are measured using a test spectrum analyzer.
1. While the spectrum analyzer is still connected to the 321.4 MHz IF Output connector on
the rear panel of the PSA, configure the PSA and test equipment as follows:
Table 15 E444xA PSA Spectrum Analyzer Setup
Parameter Setting
Frequency:
Center
Span
1 GHz
0 Hz
Resolution Bandwidth 1 MHz
Attenuation Choose 0 dB since this
setting will determine what
the IF output level is, with
respect to the input signal.
Frequency Reference Internal
Table 16 Bandwidth Measurement Spectrum Analyzer Setup
Parameter Settings
Center Frequency 321.4 MHz
Span 100 MHz
Res BW 3 MHz
Reference Level 0 dBm
Log Scale 5 dB/div.
Trace MAX Hold
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