User's Manual Part 1

CL1TC-4 400W DVB-H Transmitter Installation

Product Manual, Rev. 1 34

4.7 Cabinet Sub-Assemblies

4.7.1 Modulator Installation

he user is required to connect the following cables to the modulator rear panel:

• GPS antenna RF cable to the GPS input

• WAN/LAN Ethernet cable to Ethernet port A or B

Figure 4-3 Modulator Rear Panel

NOTE: Please refer to sections 3.2

, 3.3, 3.4 and 3.5 for a detailed description of the

modulator rear panel interfaces.

4.7.1.1 RS232 Serial Port

The RS232

serial port is configured to provide two Alarm Relays.

The alarm relay contacts are normally open and close on alarm; when the modulator is

turned off the contacts are normally closed. Each relay is software controlled and can be

set to trigger on a specific alarm.

Pin No Function

1 Relay 1 contact

2 RxD

3 TxD

4 Relay 2 contact

5 GND

6 Relay 1 contact

7 RTS

8 CTS

9 Relay 2 contact

Table 4-3 RS232 Serial Port Pin-out