Incoming Inspection
9. Select Audio In
put > Dolby 2. (Factory preset configured Dolby 2 to decode
Dolby from the AES A1-2 input.)
10. Press the Display Select button 4 again to dismiss the pop-up.
11. Check that the audio display shows the decoded Dolby signal.
12. Check that the Dolby program type shown in the top line of the audio d isplay,
for example “D 3/2 L ”, agrees with the Dolby generator setting.
13. Change the Dolby generator to a Dolby E output:
a. Press the Up/Down buttons to select a Dolby E stream as indicated by the
leading “E” in the bit stream name.
b. Press Enter to activate the selected signal.
14. If option DDE is present, check that the audio display shows the decoded
Dolby signal and that the Dolby program type shown in the top line of the
audio display, for example “E 2+2”, agrees with the Dolby generator setting.
15. If option DDE is not present, check for the “DOLBY E” message in bars 1
and2oftheAudiodisplay.
16. Record Pass or Fail for Dolby Decode in the test record.
LTC Waveform and Decode
Test
1. Restore to Factory Presets. (See page 60, Restore the Factory Pre sets.)
2. You will need a custom cable for this step. (See Figure 2 on page 94.)
a. Solder wires to each of the pins of a male db9 connector, and strip the
insulation back approximately 1/4 inch on each of the wires.
b. Make a shielded coaxial cable with a male RCA connector on one end.
On the other end, connect the center coaxial conductor to pin 2 of the
male db9 connector and the outer (shield) conductor to pin 1 of the male
db9 connector.
NOTE. This is the same cable used to check Ground Closure functionality.
3. Connect the RCA connector on the custom cable to the output of the Timecode
generator. Connect the custom cable 9-pin connector to the REMOTE
connector on the waveform monitor rear panel.
4. Select any NTSC signal for the AVG1.
5. Connect the TG2000 AVG1 composite output to the video input of the
Timecode generator.
6. Connect a 525/270 color bar signal from the DVG1 module to the SDI A input
of the instrument under test.
72 Waveform Monitors Specifications and Performance Verification
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