Orban OPTIMOD-FM 5500 Operation Manual page 65

OPTIMOD-FM DIGITAL
You will set the operating levels of the 5500 to match the input levels it is receiv-
ing so the 5500's AGC can operate in the range for which it was designed. There
are separate settings for the analog and digital inputs. If you provide both ana-
log and digital inputs to the 5500, optimum adjustment is achieved when the
gain reduction meters show the same amount of processing for both analog and
digital inputs.
This will allow you to switch between analog and digital inputs without sudden
level changes.
A) Press the Next button.
B) Feed normal program material to the 5500.
C) Play program material from your studio, peaking at normal program levels
(typically 0VU if your console uses VU meters).
D) [Skip this step if you are not using the analog input.]
Hold down the A
meter indicates an average of 10 dB gain reduction.
The procedure does not apply to the 5500's stand-alone stereo encoder
mode. In this mode, the level indicated on the screen during this step is
the r.m.s. level (in dBu) of a 50 Hz input tone that produces 100% peak
modulation at the 5500's composite output when the 5500's C
L
IMITER
E) [Skip this step if you are not using the digital input.]
Hold down the D
meter indicates an average of 10 dB gain reduction.
The procedure does not apply to the 5500's stand-alone stereo encoder
mode. In this mode, the level indicated on the screen during this step is
the r.m.s. level (in dBfs) of a 50 Hz input tone that produces 100% peak
modulation at the 5500's composite output when the 5500's C
L
IMITER
10. Set analog output feed.
A) Press the Next button.
B) Turn the knob to choose FM, FM+Delay, or Monitor.
11. Set analog output to be flat or pre-emphasized.
A) Press the Next button.
B) [Skip this step if you will not be using the analog left/right outputs.]
Turn the knob to choose P
If you will use the analog output to drive a stereo encoder, P
the best performance because the stereo encoder that receives the ana-
log output does not have to restore the pre-emphasis. However, if you
cannot defeat the pre-emphasis in your stereo encoder, or if you will use
the analog output for monitoring, set the output F
soft button and adjust the knob so that the AGC
NALOG
D control is set to 0 or O
RIVE
soft button and adjust the knob so that the AGC
IGITAL
D control is set to 0 or O
RIVE
(for pre-emphasis) or F
-
RE E
.
FF
.
FF
.
LAT
.
LAT
INSTALLATION
OMPOSITE
OMPOSITE
provides
RE
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