Lexicon CORE2, Service Manual

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Lexicon Studio Core2 Service Manual
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7. Click on the Punch tab to bring it forward. To enable your Input Source and Output Destinations
selected from the Core2 tab, make sure the enable punch check-box is selected (it will have a check in
the box if enabled).
8. In the Sources menu, select A/D 1.
9. Hold the CTRL key down and select S/PDIF Out L and S/PDIF Out R in the Destinations menu.
10. Verify the digital output is < -96dBFS.
11. Apply a 1kHz signal to the #3 analog input.
12. Set Sources in the Punch menu to A/D 4 and S/PDIF Out R.
13. Verify the digital output is < - 96dBFS.
14. The above test needs to be repeated for the S/PDIF Optical input connection of the Core2.
15. Disconnect the Coax S/PDIF input.
16. Using optical cable connect the Optical Output on the back of the Core2 card to the Digital Distortion
Analyzer.
17. In the Routing area, activate the Optical S/PDIF Out by checking the Optical box.
18. Repeat steps 8-13 and verify the crosstalk specification.
Digital In To Analog Out Crosstalk Test:
1. Apply a 1kHz signal @ 0.0dBFS signal from the Digital Function Generator to the S/PDIF IN on the
Core2 Connector Box.
2. Connect the analog output marked #1 on the Core2 Connector Box to the Analog Distortion Analyzer.
3. On the Analyzer, engage the 20Hz to 20kHz audio bandpass filters.
4. Open the LexPanel by double clicking on the Lexicon Studio Icon.
5. Click on the Core2 tab to bring it forward. In the Routing area, activate the S/PDIF In, Analog Outputs 1-
4, and Output 5-8 buttons by clicking on each of them. If Optical is enabled (checked), disable it.
6. To activate your Routing selections, click on the Apply button, if it is flashing. There is no need to click
the Apply button if it is not flashing.
7. Click on the Clock Source tab to bring it forward. In the Clock Source menu select S/PDIF.
8. Click on the Punch tab to bring it forward. To enable your Input Source and Output Destinations
selected from the Core2 tab, make sure the enable punch check-box is selected (it will have a check in
the box if enabled)..
9. In the Sources menu, select S/PDIF In L.
10. Hold the CTRL key down and select D/A outputs 1, 3, 5, 7 in the Destinations menu.
11. Verify that all even analog outputs (2, 4, 6, 8) are < -96dB.
12. Select all of the even D/A outputs (2, 4, 6, 8).
13. Verify that all odd analog outputs (1, 3, 5, 7) are < -96dB.
14. The above test needs to be repeated for the S/PDIF Optical input connection of the Core2.
15. Disconnect the Coax S/PDIF input.
16. Using optical cable connect the Digital Function Generator to the Optical Input on the back of the Core2
card as described in Step 1 above.
17. In the Routing area, activate the Optical S/PDIF In by checking the Optical box.
18. Repeat steps 10 - 13 and test Crosstalk specification.
Dynamic Range Tests:
Analog In To Digital Out Dynamic Range Test:
1. Apply a 1kHz signal @ +8dBv from the Analog Low Distortion Oscillator to the Analog Input marked #1
on the Core2 Connector Box.
2. Connect the digital output marked S/PDIF of the Core2 Connector Box to the Digital Distortion Analyzer
3. Open the LexPanel by double clicking on the Lexicon Studio Icon.
4. Click on the Core2 tab to bring it forward. In the Routing area, activate the Analog Inputs and S/PDIF
Out buttons by clicking on them. If Optical is enabled (checked), disable it.
5. To activate your Routing selections, click on the Apply button, if it is flashing. There is no need to click
the Apply button if it is not flashing.