Orban OPTIMOD-FM 8600, Operating Manual

Page: 38 / 397

1-10
INTRODUCTION ORBAN MODEL 8600
OPTIMOD-FM simultaneously accommodates digital and analog inputs and outputs.
You can switch any of the 8600’s outputs between the analog-channel processing, a
low-delay monitor signal, and the HD-channel processing.
You select whether OPTIMOD-FM uses the digital or analog input on the In-
put/output screen, by PC remote control, or by GPI (General Purpose Interface) opti-
cally-isolated remote control. Both analog and digital outputs are active continuous-
ly.
Level control of the AES3 input is via software control through the
I
NPUT
/
OUTPUT
screens.
In addition, an AES11 sync input can accommodate house sync. It will lock the 8600’s
two AES3 outputs to this sync even if the digital input is asynchronous to house sync.
In Ratings Encoder Loop-Through mode, AES3 output #2 drives the ratings encoder
and the Optimod’s Sync Input is repurposed to receive the output of the ratings en-
coder. (See
Connecting a Ratings Encoder on page 2-8.)
Analog Left/right Input/output
The left and right analog inputs are on XLR-type female connectors on the rear pan-
el. Input impedance is greater than 10k
Ω
; balanced and floating. Inputs can accom-
modate up to +27 dBu (0 dBu = 0.775Vrms).
The left and right analog outputs are on XLR-type male connectors on the rear pan-
el. Output impedance is 50
Ω
; balanced and floating. They can drive 600
Ω
or higher
impedances, balanced or unbalanced. The peak output level is adjustable from –6
dBu to +24 dBu.
Level control of the analog inputs and outputs is accomplished via software control
through System Setup. (See step 4 on page 2-27 and step 5 on page 2-30.)
Stereo Baseband Composite Output
The stereo encoder has two unbalanced analog baseband outputs on two BNC con-
nectors on the rear panel. Each output can be strapped for
0
or 7
5Ω
source imped-
ance and can drive up to 8V peak-to-peak into 7
5Ω
in parallel with up to 0.047
µ
F
(100ft / 30m of RG-59 / U cable) before any significant audible performance degra-
dation occurs (see the footnote on page 1-15 and refer to
Figure 2-3: Separation vs.
load capacitance on page 2-10). Independent level control of each output is via
software in the
I
NPUT
/
OUTPUT
> C
OMPOSITE
screen.
Digital Composite Outputs
In MPX hardware, there is also an AES3 digital composite output at 192 kHz sample
rate. Its output level is set in the Input/Output 5 screen titled Composite 2. At the PC
remote, it is located in the
I/O S
ETUP
S
CREEN
with the tab
D
IGITAL
E
NCODER
.
This output appears on a male XLR-type connector on the breakout cable supplied
with your Optimod. This output is fully compatible with and interoperable with the