User's Manual Part 1

Table Of Contents
3EM21522AAAA OPERATION
Issue 1, March 2008 DTR-0200-SA-SIRIUS
5-39
5.7.2.2
Modulator Modes
There are seven modulator operating modes but only two are used in the field; the
remainder are factory modes. The two modes used by the operator/technician are:
1). Standby mode
2). Run
Mode selection is via the GUI Main Menu. From the Main Menu select Config =>Mod-
ulator => Modulator Mode => Standby or Run. See Figure 5 - 45.
Figure 5 - 45 Modulator Mode Screen
5.8
CONTROLS, INDICATORS, AND CONNECTORS
Controls, indicators, and connectors used in normal operation or referenced in proce-
dures are shown in Figure 5 - 46 through Figure 5 - 53.
5.8.1
Signal Processing Unit (SPU) Controls and Indicators
The SPU front panel has a series of LED indicators to warn of SPU Alarms, Sync con-
ditions, and HPA alarms and conditions. Specific alarms appear on the GUI ALARM
screen and are addressed in
Appendices D and E. Also on the front panel is the Local
Remote push-button switch and its related indicator LEDs. Front panel indicators are
addressed in Figure 5 - 46.