Orban OPTIMOD-FM 5500 Operation Manual page 75

OPTIMOD-FM DIGITAL
"digital input" silence detector is used for automatic input switching.
(See step 12 below.)
Silence sense will be activated if either channel falls silent, thus also pro-
tecting against "loss-of-one-stereo-channel" faults.
If silence is detected at the analog input as well as the digital input (as in
the case of a studio operational fault), automatic switching will not oc-
cur.
When an active signal is restored to the digital input, the 5500 will
automatically switch back to that input.
A) Navigate to Setup > S
level below which the 5500 will interpret the input as being silent.
This setting is with respect to the current analog reference level and digi-
tal reference level.
B) Press Next as necessary to see the S
of time that the input must be below the Silence Threshold before the 5500
automatically switches to the analog input.
C) Press Next as necessary to see the A
you wish the 5500 to switch automatically from the digital to analog input
when silence is detected. Set the control to N
12. Program Tally Outputs.
[Skip this step if you do not wish to use the tally outputs.]
See step 6 on page 2-4 for wiring instructions.
You can program the two tally outputs to indicate a number of different opera-
tional and fault conditions.
A) Navigate to Setup > N
B) Program tally output #1.
To program a given tally output, press and hold the soft button associ-
ated with the output you are programming. As you turn the control
knob, the functions listed below will appear in the highlighted field.
 Input: Analog: Indicates that the 5500 is processing audio from its analog
input.
 Input: Digital: Indicates that the 5500 is processing audio from its AES3
digital input.
 Analog Input Silent: Indicates that the level at either or both analog in-
put channels is below the threshold set in step 10 on page 2-26.
Currently, this feature applies only to the stand-alone stereo encoder
mode.
 AES Input Silent: Indicates that the level at either or both digital input
and set the Silence Threshold to the
T
ILENCE HRESHOLD
D
ILENCE
NALOG
R > R
ETWORK EMOTE EMOTE
control. Set it to the amount
ELAY
F control. Set it to Y
ALLBACK
to defeat automatic switching.
O
I > T 1.
NTERFACE ALLY
2-27
INSTALLATION
if
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