Lectrosonics HH Alignment Procedure page 26

Carrier deviation and limiter distortion measurements (low gain)
Prerequisite(s) Unit in set-up mode
Note Entering Set-up mode is not necessary if the Alternate Method is exercised.
DUT in "Passthru"
Frequency set to middle frequency
LF filter set to "LF 35"
Using the test panel key pad navigate to the "Gain" screen
Press UP button to change audio level to "Gain 22 "
level=22 (changes audio level to 22)
Apply +3.0VDC, 500mA current limit in at battery contact J8 (J9 is circuit common)
-20 dBu, 250 Hz, low distortion, sinusoidal signal in at audio input rig
Verify at least one audio LED red (both red is OK) (limiter activated)
Measure peak carrier deviation at RF J3
Measure audio signal distortion at demodulated carrier at RF J3 output
Power down and Carrier deviation measurement (with pilot and compressor on)
Prerequisite(s) Compressor enabled (power cycle enables compressor and pilot signal)
Pilot enabled (power cycle enables compressor and pilot signal)
Frequency set to middle frequency
Audio Gain set to "AUD 22"
LF filter set to "LF 35"
Adjust audio input at input Rig so -20 LED D5 just switches from GREEN to RED, -10 LED D6 is GREEN (-25
dBu in typically)
Measure peak carrier deviation at RF J3
? ?)
(?)
(22)
+73 to 77 kHz (+75)
1% THD+N max. (+0.4)
37 to 41 kHz (39)
? ?)