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4-14
MAINTENANCE
9. Test Digital Receiver Sample Rate Lock.
A)
Verify 6200 software controls are set to their default settings. (Refer to page 4-9.)
Press
button to re-access Setup menu.
B)
Setup
Press
soft key to access I/O CALIB menu.
C)
I/O CALIB
Press
D)
DIG IN CALIB
Set
to digital: Press
E)
INPUT
then release the
INPUT
Connect the digital source generator to the AES/EBU Digital Input XLR connector
F)
of the 6200.
Inject the Digital Input with a sample rate of 32kHz, 44.1kHz and 48kHz. Use 24-
G)
bit words.
Measure the frequency of the AES/EBU receiver at TP614. Verify that the meas-
H)
ured frequency corresponds with the input sample rate.
I)
Connect AES/EBU digital source to Sync XLR Input connector and repeat steps 9-
C through 9-H using TP618 to verify sample rate lock.
Disconnect the digital source generator from the 6200.
J)
10. Test Digital Transmitter Sample Rate.
Verify 6200 software controls are set to their default settings. (Refer to page 4-9.)
A)
B)
Press
Setup
button to re-access Setup menu.
Press
soft key to access I/O CALIB menu.
C)
IO CALIB
D)
Press DIG IN CALIB soft key.
Set
to digital: Press
E)
INPUT
then release the
INPUT
F)
Change the DO RATE to 32kHz, 44.1kHz and 48kHz, and verify that the frequen-
cies measured at TP606 (FSYNC) follow the chart below within given tolerances:
Press
soft key, use the control knob to select a sample rate, then release
DO RATE
the
soft key.
DO RATE
Sample Rate
32kHz
44.1kHz
48kHz
11. Check frequency response of Digital I/O
A)
Verify 6200 software controls are set to their default settings. (Refer to page 4-9.)
Press
button to re-access Setup menu.
B)
Setup
C)
Press
IO CALIB
soft key to access I/O CALIB menu.
soft key.
soft key, use the control knob to select digital,
INPUT
soft key.
soft key, use the control knob to select digital,
INPUT
soft key.
Tolerance (PPM)
50 PPM
100 PPM
50 PPM
Tolerance (Hz)
±1.60 Hz
±4.41 Hz
±2.40 Hz
Orban Model 6200
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