User's Manual Part 1

Table Of Contents
3EM21522AAAA OPERATION
Issue 1, March 2008 DTR-0200-SA-SIRIUS
5-37
Figure 5 - 44 Repeater Operating Mode Screen
5.7.2.1.1
Standby Mode
The Standby Mode is used to take the repeater off the air without removing all power.
The up-converter output is muted, ALC is off, and the HPA is switched off by dis-
abling the HPA power supply.
Following are the repeater operating conditions when in the Standby Mode:
AC power is applied to the SPU, HPA, and fans
HPA power supply is disabled
HPA RF switch is off
Up-converter output is muted
Cabinet fans are turned on
5.7.2.1.2
Broadcast Mode
The Broadcast Mode is the normal operating mode for the repeater and allows the
repeater to transmit either real (satellite input) or internally generated test signals,
transmit OFDM signals for terrestrial broadcast, and run all the protection loops/
ALC. In this mode, all repeater functions are automatically maintained by the Main
Controller.