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5.7.2 U
S
SING THE
ERIAL
1. Verify that the unit is in REMOTE control mode (REMOTE/LOCAL LED indicator is ON).
If not, switch to REMOTE mode as instructed in Section 5.4 Select Local Control Mode at
page 37.
2. From Screen (menu) #1, use the 'F9' function key to select the SSPA and then 'F7'
('MUTEoff ').
5.8 STATUS DISPLAY SCREENS
The front panel display allows an operator to view information on a number of critical operating
parameters. Use [ ] and [ ] keys to move between the various displays and sub-menus.
The following are typical status displays.
5.9 AMPLIFIER SHUTDOWN
Amplifier shuts down due to an alarm or as a result of a hardware or software command.
A software shutdown is performed at either the front panel or by selecting the MUTE ON
function key sending the appropriate code via the RS-485 serial interface, see Section 4.3.2 at
page 29. The amplifier can be restarted in a similar manner provided a hardware shutdown is not
in effect. The amplifier can also be restarted by switching power off & on the PA. Note that in a
redundant system, if the MUTE command is issued by the operator to the ON-LINE unit, the
system will automatically switch the other unit as ON-LINE and the muted unit as STANDBY.
When the amplifier resumes operation, the attenuation level will return to its previous setting
after about 2 minutes of stable operation. Note however that the amplifier will not restart if a
FAULT condition is detected.
I
:
NTERFACE
STATUS: ____
REFL. PWR <nn.n dBm
STATUS: ____
OUTPUT PWR nn.n dBm
STATUS: ____
PA HOTSPOT nn.n °C
STATUS: ____
PA SHROUD
nn.n °C
STATUS: ____
SUPPL CURR nn.n A
ARMA-C250-CRM
40
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