User's Manual Part 1

Table Of Contents
OPERATION 3EM21522AAAA
DTR-0200-SA-SIRIUS Issue 1, March 2008
5-42
Figure 5 - 46 Signal Processing Unit (SPU) Front Panel (Sheet 3 of 3)
5.8.2
High Power Amplifier (HPA) Controls and Indicators
5.8.2.1
The HPA front panel houses four status LEDs; AC ON, RF ON, DC ON, and SUM
FAULT. The panel also houses a type DB-9 RS-232 connector and a 15A Fuse Holder.
See
Figure 5 - 47
.
SUMMARY ALARMS
INDICATOR COMMENTS INDICATION
TEMPERATURE
Alarm when Ambient temperature goes too high
over the Operating Temperature Threshold.
Normal = Green
Fault Alarm = Red
SYS ALARM LED goes red for any alarm in the system Normal = Green
Fault Alarm = Red
CABINET Currently behaves the same way as Temperature
LED
Normal = Green
Fault Alarm = Red
OTHER CONTROLS / CONNECTORS / INDICATORS
CONTROL/
CONNECTOR/
INDICATOR
COMMENTS INDICATION
UPS ON/OF Push-button switch When the SPU is pow-
ered off, holding the
push-button keeps the
UPS off
CONSOLE RS-232 connector for external console
LOCAL/REMOTE Mode switch and mode indicators. Press twice to
switch to Local and disconnect the HPA
Individual LEDs indicate
mode
RESET Push-button to reset controller