Lexicon RV-8 Service Manual page 31

Lexicon
Phono Input to Digital Outputs
This test will verify the audio path between the left and right Phono inputs and the Zone 2 S/PDIF coaxial
and optical digital outputs.
Setup:
1. Connect the video monitor to the main composite output of the RV-8 and turn the monitor on. This will
allow full viewing of the RV-8's menus.
2. Connect the S/PDIF coaxial digital output on the RV-8 rear panel to the digital record input jack of the
DAT machine.
3. Connect the left and right analog outputs of the DAT machine to the analog left and right inputs of an
external amplifier. Connect the outputs of the external amplifier to a pair of speakers.
4. Turn on the RV-8 using the main power switch on the rear panel.
5. Once the unit is in standby mode, press the front panel standby button or the remote control
POWER button to enter normal operation.
Test:
1. Connect the low distortion oscillator output to the left and right phono inputs on the rear panel of the
RV-8.
2. Connect the S/PDIF coaxial digital output on the RV-8 rear panel to the digital record input jack of the
DAT machine.
3. Connect the left and right analog outputs of the DAT machine to the analog left and right inputs of the
external amplifier. Connect the outputs of the external amplifier to a pair of speakers.
4. Place the DAT machine into Record mode.
5. Power on the external amplifier. Slowly increase the volume on the external amplifier to a comfortable
listening level.
6. Sweep the oscillator from 20Hz to 20kHz. Verify that clean, undistorted audio can be heard
throughout the frequency sweep.
7. Power down the external amplifier.
8. Repeat steps 2 through 7 for the S/PDIF optical output. Use the appropriate digital cable.
Digital Input to Amplifier Output
This test will verify the audio path between the S/PDIF coaxial and optical inputs labeled 1 to 4 and the
amplifier outputs.
Setup:
1. Connect the video monitor to the main composite output of the RV-8 and turn the monitor on. This will
allow full viewing of the RV-8's menus.
2. Connect a S/PDIF coaxial digital output from a DVD or CD player to the S/PDIF coaxial digital input
labeled 1 on the rear panel of the RV-8.
3. Connect the outputs of the front left and front right channels (channels 1 and 5) of the RV-8 amplifier
to a pair of speakers.
4. Turn on the RV-8 using the main power switch on the rear panel.
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