User's Manual Part 1

Table Of Contents
3EM21522AAAA OPERATION
Issue 1, March 2008 DTR-0200-SA-SIRIUS
5-3
The operating conditions in the Standby mode are:
AC power is applied to the SPU, HPA, and fans.
The HPA power supply is disabled.
The HPA RF switch is OFF.
The Up-converter output is muted.
The cabinet fans are turned on.
5.3.1.3
Manual Mode
This mode allows manual control of the repeater for the technician to perform mainte-
nance and/or testing or troubleshooting. In the Manual Mode most commands can
only be accessed through the
“administrator” login. The operator must log in as a sys-
tem administrator using the default password “ipradmin”. The operator now has
authority to alter parameters
.
The manual mode must be used with caution. If parameters
are changed indiscriminately, unintentional damage to the
repeater and loss of factory settings could occur.
When the repeater is switched to the Manual Mode, it maintains all its system set-
tings which were in effect prior to the switchover. The RF output DAC last value will
remain until c
hanged by the operator. The range of DAC values is limited to those
within the minimum and maximum permitted values required to maintain the up-
converter output power.
5.3.2
Modulator Operating Modes
The modulator has seven operating modes:
Standby Mode
Run Mode
CW Mode
Two Tones Mode
Notch Mode
Comb Mode
PRBS Mode
Of these seven operating modes, the technician will only use Standby Mode and Run
Mode. All other modes are for factory use only.
WARNING
Possibility of
Damage
to Equipment