Orban OPTIMOD 6200, Operating Manual

Page: 133 / 195

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