HD491 Smart Encoder
5 Copyright © 2000-2014 EEG Enterprises, Inc.
All Rights Reserved.
Rear Panel
AC Power
Source
USB Port
LAN Port
Decoder
Out
Master
Video Out
GP In
GP Out
Master
Video In
Video
Out 2
Serial
Port 2
(RS232)
Serial Port 1
(333/GA Out)
Audio In
Modem B
Time
Code In
Modem A
Aux
Video In
HD491
Primary AC Power
AC power input, 120 – 240 V, 50-60 Hz tolerant. Connect to the unit’s
AC power source.
Master Video In
Input for program video source. HD491 can use HD-SDI (SMPTE 292M)
or SD-SDI (SMPTE 259M).
Master Video Out
Relay-bypass protected primary video output.
Video Out 2
Non relay-bypass protected copy of the primary video output signal.
Video Out 3
Non relay-bypass protected copy of the primary video output signal.
Aux Video In
The Aux Video In can be used as a source of caption data when
connected to a captioned HD-SDI or SD-SDI video source. Caption data
from the Aux Video In will be up-converted or down-converted as
necessary for encoding on to the Master Video signal. If caption data is
present at both the Master Video In and the Aux Video In, the signal
with HD data will take precedence.
Modem
Standard phone jack data port. Connect to a phone line to enable dial-up
captioning. Modem A is installed in all 491 units; Modem B is an add-
on option.
Serial Ports
491 Encoders have two serial data ports. For HD491, port 1 is a 708
caption data output port to be connected to an ATSC encoder captioning
port (see page 22) and port 2 is an RS232/RS422 port for caption data
input. For more detailed descriptions of RS232/422 operation and
configuration, see pages 37 and 44.
