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Installation
5-8
SCM4000
Technical Reference Manual
5.8.2
Audio Inputs and Outputs
The SCM4000 provides options for separate audio and video
outputs (Modulator/Encoder) or inputs (Demodulator/Decoder),
as well as analog composite and embedded digital formats.
Audio inputs and outputs are factory configured for each
customer’s requirements.
•
Firmware is specifically set up for each customer’s needs
and hardware configurations.
•
Each SCM4000 Demodulator/Decoder and Modulator/
Encoder is shipped with pre-installed factory Presets, as
specified and ordered by the customer.
•
Changes to Presets are limited by the hardware options
installed in the unit(s).
5.8.3
Audio Configurations
Each SCM4000 contains a maximum of four audio circuits. Each
audio circuit is a 3-wire balanced circuit capable of carrying one
tone or voice signal. An audio circuit can carry one analog
balanced channel or two digital AES/EBU channels.
•
Analog - Four monaural or two stereo channels carried on
each
AUDIO
connector.
•
Digital AES/EBU - Two digital channels carried on each
AUDIO
connector.
MPEG audio circuits must be configured in pairs:
•
Audio A
- Channels 1 and 2
•
Audio B
- Channels 3 and 4
Audio channels are factory configured for each SCM4000
hardware configuration ordered.
All configurations of the SCM4000 contain an RS-232 connector
located on the front panel behind an access cover. All SCM4000
configurations contain different rear panel connectors, based on
the options contained in the unit.
SCM4000 Modulator rear panel connectors are shown in
Figure 5-7: Modulator Rear Panel Connectors
POWER IN
IF IN
IF OUT
T1/E1
10/100
1
ASI
2
ASI
3
ASI
DS3/E3
DS3/E3
SMPTE
RS232/485
SUM ALARM
1
2
POWER IN
FUSE
AC Power
Option
DC Power
Option
IF OUT
T1/E1
10/100
1 ASI
DS3/E3
2 ASI
DS3/E3
3 ASI
SMPTE
RS232/
RS485
SUM
ALARM
Содержание SCM4000
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