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OPERATION LBI-39128
25
When no transmitter alarms are received in a status message
from the PMU, the Site Controller computer takes the
following action:
• Resumes the practice of using transmitter alarms
from the PMU to take transmitter channels out of
use for system calls.
• Continues to assign all transmitters to test calls.
• Sends the alarm cleared information (transmitter
channel number) to the System Manager.
PARAMETERS
Changing parameters not covered in this
manual may lead to unsatisfactory operation of
the PMU option.
CAUTION
The PMU option parameters covered in this manual are
shown in Table 7. The first column lists the parameters. The
next three columns represent the three locations where the
parameter must be set or may be re-configured. Parameters
may go by slightly different names in different locations.
Channel PMU Enable
This parameter set (one bit per channel) is used to
enable or disable PMU monitoring of each transmitter
channel on a channel-by-channel basis. It is only
configurable in the Site Controller computer’s Personality
PROMs by the factory, and must be programmed as “Y”
(enabled) for each channel you want the PMU to monitor. It
is recommended that all 20 channels be enabled (equipped
or not).
The factory-configured values for this parameter set in
the Site Controller computer’s Personality PROMs is used to
configure the Site Controller computer’s Active
Configuration during power-up. This parameter set cannot
be re-configured in the Site Controller computer’s Active
Configuration by the System Manager. This parameter set is
sent to the PMU during the EDACS Configuration Setup,
but is not re-configurable there either. This parameter set is
used by the PMU to determine which transmitter channels to
monitor.
Site PMU Enable
This parameter is used to enable or disable the PMU
option as a whole. It is configured in the Site Controller
computer’s Personality PROMs by the factory, and can be
re-configured in the Site Controller computer’s Active
Configuration through a System Manager. If the system is
not equipped with a System Manager, this parameter must
be programmed as “On” (enabled) in the Personality
PROMs by the factory.
The factory-configured value for this parameter in the
Site Controller computer’s Personality PROMs is used to
initially configure the Site Controller computer’s Active
Configuration during power-up. The value of this parameter
may then be re-configured in the Site Controller computer’s
Active Configuration through a System Manager. This
parameter is not sent to (or used by) the PMU. When this
parameter is disabled, the Site Controller computer will not
send poll messages to the PMU.
PMU Model
This parameter is used to identify the PMU model. It is
only configurable in the Site Controller computer’s
Personality PROMs by the factory, and must be
programmed as “New-8860”.
The factory-configured value for this parameter in the
Site Controller computer’s Personality PROMs is used to
initially configure the Site Controller computer’s Active
Configuration during power-up. The value of this parameter
cannot be re-configured in the Site Controller computer’s
Active Configuration through a System Manager. The value
of this parameter is not sent to (or used by) the PMU. The
value of this parameter is used by the Site Controller
computer to determine what baud rate to use for
communications with the PMU.