Lexicon 960L - Storing and Labeling Your Edits

960L Multi-Channel Digital Effects System Service Manual
4-6
I/O Gain Tests
Analog In to Analog Out Audio Gain Test:
1. Connect a balanced XLR audio cable between the low distortion oscillator and the 960L # 1 Audio
Input.
2. Connect a balanced XLR audio cable between the 960L # 1 Audio Output and the distortion analyzer.
3. Apply a 1kHz sinewave @ 9.75 VRMS.
4. Verify the output level to be 10 VRMS ±1.5V.
5. Repeat the test on the remaining Input /Outputs 2-8.
Analog In To Digital Out Audio Gain Test:
1. Connect a balanced XLR audio cable between the low distortion oscillator and the 960L # 1 Audio
Input.
2. Connect a balanced XLR audio cable between the 960L # 1-2 AES Output and the digital distortion
analyzer.
3. Apply a 1kHz sinewave @ 10.94 VRMS.
4. Verify the output level to be -1 dBFS ± 1dBFS.
5. Move the audio input cable to the # 2 Input and repeat the test.
6. Repeat the test on the remaining Input /Outputs pairs 3-4, 5-6, and 7-8.
Digital Input to Analog Output Gain Test:
Note: Change the Clock Source and Inputs to AES - see Audio/Functional Tests Setup.
1. Connect a balanced XLR audio cable between the digital function generator and the 960L # 1-2 AES
Input.
2. Connect a balanced XLR audio cable between the 960L # 1 Audio Output and the distortion analyzer.
3. Apply a 1kHz sinewave @ -1 dBFS.
4. Verify the output level to be 11.5 VRMS ±1.5V.
5. Move the audio output cable to the # 2 Output and repeat the test.
6. Repeat the test on the remaining Input /Outputs pairs 3-4, 5-6, and 7-8.
Frequency Response:
Analog In to Analog Out Frequency Response Test:
Note: Change the Clock Source to Internal and Inputs to Analog - see Audio/Functional Tests Setup.
1. Disable all filters on the distortion analyzer.
2. Connect a balanced XLR audio cable between the low distortion oscillator and the 960L # 1 Audio
Input.
3. Connect a balanced XLR audio cable between the 960L # 1 Audio Output and the distortion analyzer.
4. Apply a 1kHz sinewave @ 2.45 VRMS.
5. Set the Analyzer for a 0dB reference (@1khz)
6. Sweep the oscillator from 20Hz to 20kHz and verify the level is +/- 1dBr throughout the sweep.
7. Repeat the test on the remaining Input /Outputs 2-8.
Analog In To Digital Out Frequency Response Test:
1. Disable all filters on the digital distortion analyzer.
2. Connect a balanced XLR audio cable between the low distortion oscillator and the 960L # 1 Audio
Input.
3. Connect a balanced XLR audio cable between the 960L # 1-2 AES Output and the digital distortion
analyzer.
4. Apply a 1kHz sinewave @ 6.90 VRMS.
5. Set the Analyzer for a 0dB reference (@1khz)
6. Sweep the oscillator from 20Hz to 20kHz and verify the level is +/- 1dBr throughout the sweep.