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S:\hp11807a\OPT001\USRGUIDE\BOOK\chapters\descrptn.fb
Chapter 4, Test, Parameter, and Pass/Fail Limit Descriptions
Parameter 27, TX De-emphasis
Parameter 27, TX De-emphasis
De-emphasis refers to the network at the input of the test set’s AF Analyzer which
is designed to restore the received, pre-emphasized FM signal. If this test
parameter is turned on, a 750 µsec de-emphasis filter is activated.
For Example:
If your industry standard requires the “standard test receiver” to use a 750 µsec de-
emphasis filter, enter
1 in the value column, otherwise, enter 0 to have de-
emphasis off.
It’s Used in the Following Tests:
TEST_06. TX Audio Distortion
TEST_08. TX FM Hum and Noise
TEST_21. TX Quick Test