Altering Alarm Thresholds - Tait TB8100 User Manual

Altering Alarm Thresholds

Minimum PA
power output
Maximum PA
reverse power
output
TB8100 Service Kit User's Manual
The Thresholds form (Configure > Alarms > Thresholds) lets you alter the
thresholds for base station alarms.
Some alarm thresholds are fixed; they are built in to the base station and cannot
be changed. Others have default values. You may want to adjust them to better
reflect your system's operating conditions or monitoring procedures. This can
be important if an alarm is used as an input in Task Manager tasks.
The form displays a list of upper and lower limits. Alongside each threshold is
the applicable unit. To the right, the read-only Current measurement column
displays the current value of the parameter to help you select a suitable
threshold. When a parameter value goes outside its limit, the base station
triggers the corresponding alarm.
To adjust a threshold, edit its value or click one of the adjacent arrows, and then
click OK to confirm your changes and close the form.
The alarms that these thresholds apply to are described in
on page 147. The equivalent Task Manager inputs are described in
Inputs" on page 202.
Defines the lower limit for the PA forward power output. When the output
falls below this limit, the base station triggers the alarm
the Task Manager input
Defines the upper limit for the PA's reverse power. When the reverse power
exceeds this limit, the base station triggers the alarm
the Task Manager input
When using a 5 W PA, or any PA set to 20 W or less, disable this alarm and use
the VSWR alarm instead. The resolution of the reverse power measurement is
only 1 W, so the reverse power alarm would only trigger if there is a serious
antenna fault. VSWR is calculated with better precision and reliably detects
load failure.
Forward power low becomes true.
Reverse power high becomes true.
"Monitoring Alarms"
"Alarm
Forward power low and
Reverse power high and
Altering Alarm Thresholds 157