Audio Amplitude Accuracy Performance Test

This test is to be performed only on analyzers with Option 107 and Option 233.

This test verifies the amplitude accuracy of the Option 107 Audio path across the 20 Hz to 250 kHz frequency range of the option.

This test compares the analyzer input voltage (measured by a highly accurate DVM) to the voltage measured by the analyzers built-in Audio AC Level measurement at several frequencies. Since the audio hardware provides 5 gain settings (Audio Ranging), the test is repeated 5 times using different input levels and gain settings.

Option 107 consists of an audio board and a front panel BNC connector. The audio signal path is in addition to (and completely bypasses) the normal RF/IF signal chain.

The input impedance of the audio board is about 100 kΩ. When connecting a 50 ohm source to the 100 kΩ audio input, expect the audio amplitude measurement value returned to be two times the source amplitude setting.

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Required Test Equipment

Test Equipment

Model Number

Function Generator

33622A

Digital Multimeter

3458A1

BNC Cable (2 required)

8120-2582

BNC Tee

1250-0781

BNC (f) to banana plug

1251-2277
  1. The alternate model 34470A is not supported for this test.

 

Connection Setup