99-438 Issue 05 Page 8 of 16
Operation Instructions
Power on
Once the unit has been fully installed with all required bias-‘T’s channels and the alarm interface has
been connected, power can be applied to the unit.
During the power on sequence all the front panel indicators should be seen to go through a power on
test [RED/GREEN/YELLOW]
ALL connected Bias-‘T’ channel s will now go through their start up sequence, with the respective
channel indicator going from yellow to green for all connected channels, if any indicators go RED this
indicated a channel fault.
The unit status indicator will be seen to be GREEN +short blink RED if there are no channels in a fault
condition. [See: Table 3 Status Indicator]
Momentarily press the reset switch after which the status light should be steady GREEN.
Channel Fault Conditions
A channel will be in a fault condition if the current drawn from the channel is outside the normal
operational current [i.e. the current draw is too high or too low].
When a channel first enters a fault state the controller will try to reset the channel three times. If the
fault will not clear then the channel will enter the FAULT state at which point the power is removed
from the affected channel and the remote alarm interface will indicate a FAULT mode. A faulty channel
is indicated by a RED channel indicator.
The controller will try to reset a faulty channel on an hourly basis; the remote alarm interface will
continue to will indicate a FAULT mode until all enabled channels are operating correctly.
Persistent State
Once a channel has been enabled, disconnecting the channel will result in a fault condition even if the
power to the PDU is cycled.
In order to disconnect a channel fully it is necessary to press the reset switch for more than 5
seconds [status indicator will turn YELLOW], then release, at which point the channel status
indicator will go OFF.
