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Installing the Equipment
Remote Connector
The RS-232 connector labelled remote on the back of the equipment
allows for connection to a PC for remote control, software upload or debug
purposes. The SETUP
configure the parameters for communicating with the unit. For more
information about remote control, see Chapter 4: Operating the Equipment
Remotely.
Table 2.3: RS-232 Connector
Item
Connector type
Connector designation
Pin-outs
L-band Input (on QPSK Input Models)
The L-band input is to be connected to a suitable LNB either directly, or via
a suitable attenuator giving adequate consideration to lightning and surge
protection – see Section 2.3.4, Outdoor Antenna.
In most cases an attenuator will not be required. The following list
summarises the circumstances in which one should be used.
1. If the wanted input level is greater than the specified maximum
permissible (-25 dBm)
2. If the downlead is a short length of low-loss cable and the LNB in use
has a poor return loss (7 dB min)
3. If the receiver is receiving one of many carriers in a multi-carrier FDM
system and the level of the wanted signal is close to the specified
maximum permissible
Table 2.4: QPSK Satellite Receiver (L-band) Connector
Item
Connector type
Connector designation
Pin:
Centre
Shield
LNB Supply
Impedance
Page 2-10
ADVANCED
RS232 SETUP
Specification
9-way D-type, Female
REMOTE
Pin
Function
1
Reserved
2
Data receive (Rx)
3
Data transmit (Tx)
4
Reserved
5
Ground
6
Reserved
7
Reserved
8
Reserved
9
Reserved
Specification
F- type, Female
QPSK IN, DC OUT
RF Input
Ground / Chassis
0, 13 or 18 Volts dc
max 450 mA
75 Ω
Instruction Manual: Professional Receivers and Decoders (IRD)
REMOTE menu is used to
Direction
-
Input
Output
-
-
-
-
-
-
ST.TM.TT1220.1
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