Lexicon LXP-5 - Page 24

Performance
Verification
Lexicon
Dry (unprocessed) THD
Measurement
Input Level:
Output Level:
Mix:
Program:
Fully clockwise to Maximum Level
Fully clockwise to Maximum Level
Fully counterclockwise to 100% Dry (unprocessed)
Audio Test Loop (See Diagnostic Tests)
Audio connections
1. Audio input cable from Low Distortion Oscillator output to right
channel input
2. 1/4" shorting plug to left channel input
3. Audio output cable from right channel output to THD+N Analyzer
input
4. Audio terminator (100k) plug to left channel output
Procedure
1. Apply a 1 kHz signal at -20dBV ( 283mVp/p) to right channel input.
2. Measure THD+N at right channel output. Make sure 30kHz or audio
bandpass filter on meter is ON. Acceptable reading will be <.01%.
3. Swap all right and left channel audio connections and repeat steps 1 and
2 on left channel.
2-16