L2101 &L2102 Integrated Receiver Decoder Instruction Manual – Issue 1 – September 2003
Page
30 of 126
Link Research Ltd. 23 Watford Metro Centre, Dwight Road, Watford, Hertfordshire, WD18 9XA, England.
Tel: +44 (0) 1923 200 900 Customer Support and S44 (0) 1923 200 909
Registered in London No. 2074604 Web: www.linkres.co.uk
Fax: +44 (0) 1923 241 357
5.6.2 Front
End
Panels
All front-end panels provide an RS-422/GPI connector for the input transport stream to the
IRD. The table below describes the functionality of the signals available on the connector.
RS-422
Serial
Input/GPI Pin Out Designations
PIN
DESIGNATION
PIN
DESIGNATION
1
Clock Return (-)
6
GPI 1- NO (option)
2
Clock (+)
7
GPI 1-NC (option)
3
Data Return (-)
8
N/C
4
Data (+)
9
N/C
5
GPI 1-Common (option)
5.6.3 Decoder Cable Connections
The Decoder section of the IRD is comprised of Audio outputs, Video outputs, Data output,
and a Control connection.
Cables and Connectors for Decoder Section
INTERFACE
CONNECTOR TYPE
CABLE TYPE
Analog Audio Out left
RCA (unbalanced)
XLR (balanced)
Shielded Audio Cable
Analog Audio Out right/mono
RCA (unbalanced)
XLR (balanced)
Shielded Audio Cable
Video Out, S-Video Y/C
75
Ω
DIN connector
Super Video Cable
Composite Video Out, CVBS1
BNC
RG-59
Composite Video Out, CVBS2
BNC
RG-59
Data Output (RS-232/RS-422)
9 PIN D-Type
Serial Cable
Control (RS-232/RS-485)
9 PIN D-Type
Serial Cable
5.6.4 Terminal Control and Data Connections
The IRD supports terminal control from a standard PC via a Serial RS-232 or RS-485
cable. The tables below detail the pin-to-pin and signal assignment of the RS-232 and
RS-485 cables, respectively.
RS-232 Control Cable Pin-to-Pin
9 PIN D-TYPE
CONNECTOR (PC)
25 PIN D-TYPE
CONNECTOR (PC)
9 PIN D-TYPE
CONNECTOR
(IRD)
SIGNAL
DESCRIPTION
2 3 3
PC-RxD
3 2 2
PC-TxD
5 7 5
GND