OPTIMOD-FM INTRODUCTION
1-7
• Analog left/right inputs and outputs.
• Composite stereo outputs.
• Subcarrier (SCA and RDS/RBDS) input.
The 8400HD option adds:
• A second AES/EBU digital output, which carries the HD-processed signal.
• A second stereo pair of analog outputs, switchable between the low-latency “moni-
tor” signal and the HD-processed signal.
• A second AES/EBU sync input. The sample rate of the HD-processed signal can be
genlocked to this input, independent of the sample rate of the main (FM-processed)
AES/EBU output.
Digital AES/EBU Left/Right Input/Output
The digital input and output conform to the professional AES/EBU standard. They both
have sample rate converters to allow operation at 32, 44.1, and 48 kHz sample frequency.
The left/right digital input is on one XLR-type female connector on the rear panel; the
left/right digital output is on one XLR-type male connector on the rear panel.
OPTIMOD-FM simultaneously accommodates digital and analog inputs and outputs.
You select whether OPTIMOD-FM uses the digital or analog input on the Input/Output
screen or by remote interface. Both analog and digital outputs are active continuously.
Level control of the AES/EBU input is via software control through the
Input/Output
screens.
In addition, an AES/EBU sync input can accommodate house sync. It will lock the
8400’s output to this sync even if the digital input is asynchronous to house sync.
Analog Left/Right Input/Output
The left and right analog inputs are on XLR-type female connectors on the rear panel.
Input impedance is greater than 10kΩ; balanced and floating. Inputs can accommodate up
to +27 dBu (0 dBu = 0.775Vrms).
The left and right analog outputs are on XLR-type male connectors on the rear panel.
Output impedance is 50Ω; balanced and floating. They can drive 600Ω or higher imped-
ances, 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 3 on page 2-30 and step 4 on page 2-32.)
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