Residual Responses Performance Test

Residual Responses are discrete responses that appear on the EMI receiver display with no signal applied. They are created within the EMI receiver by the frequency synthesis and frequency conversion processes. Residuals are the result of imperfect shielding of internal signals, or by other unknown mechanisms.  

In this test, the EMI receiver's RF input is terminated with 50 ohms and the attenuator is set to 0 dB. The DUT is tuned to known residual frequencies.

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Required Test Equipment

Test Equipment

Model Number1

Termination, 50 ohm

  • For Options 503, 508, 526

909A Option 012 or 909D

Termination, 2.4 mm (f)

  • For Option 544

85138B

Adapter, Type-N (f) to 3.5 mm (f)

  • For Option C35

1250-1745
  1. Refer to the main Required Equipment table for a list of alternative models.

Connection Setups