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OPTIMOD
D)
Press
DIG IN CALIB
Set
to digital: Press
E)
INPUT
then release the
Press
F)
Setup
Press
soft key to access Test menu.
G)
TEST
H)
Recall bypass preset: Press
pass, then release the
Bypass defeats all compression, limiting, and program equalization, but re-
tains
MAX LPF
I)
Connect the digital source generator to the AES/EBU Digital Input XLR connector
of the 6200.
Inject the digital input with a level of −4dBFS at 1kHz (48kHz sample rate).
J)
Measure the levels present at the AES/EBU Digital Output XLR connector
and verify a level of −4.1dBFS ±0.2dB. Use the level measured as the refer-
ence level.
Verify that frequency response between 30Hz and 20kHz is within ±0.03dB of the
K)
reference level.
Disconnect the digital source generator from the 6200.
L)
12. Check noise and distortion performance of Digital I/O.
Verify 6200 software controls are set to their default settings. (Refer to page 4-9.)
A)
Press
B)
Setup
C)
Press
IO CALIB
Press
D)
DIG IN CALIB
Set
to digital: Press
E)
INPUT
then release the
Press
F)
Setup
G)
Press
soft key to access Test menu.
TEST
Recall bypass preset: Press
H)
pass, then release the
Bypass defeats all compression, limiting, and program equalization, but re-
tains
MAX LPF
Connect the digital input of the THD analyzer to the AES/EBU Digital Output
I)
XLR connector of the 6200.
J)
Connect the digital source generator to the AES/EBU Digital Input XLR connector
of the 6200.
soft key.
INPUT
INPUT
soft key.
button to re-access Setup menu.
MODE
soft key.
MODE
frequency setting.
button to re-access Setup menu.
soft key to access I/O CALIB menu.
soft key.
INPUT
soft key.
INPUT
button to re-access Setup menu.
MODE
soft key.
MODE
frequency setting.
soft key, use the control knob to select digital,
soft key, use the control knob to scroll to by-
soft key, use the control knob to select digital,
soft key, use the control knob to scroll to by-
4-15
MAINTENANCE
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