Monitoring The Power Management Unit - Tait TB8100 User Manual

Duty cycle
(5 minutes)
Duty cycle
(24 hours)
Heatsink
temperature
Air intake
temperature

Monitoring the Power Management Unit

TB8100 Service Kit User's Manual
Indicates the average duty cycle
updated once every minute. 50% means that the PA was transmitting for 2.5 of
the last 5 minutes.
Indicates the average duty cycle over the past 24 hours. 25% means that the PA
was transmitting for 6 of the last 24 hours. If the PA has been on for less than
24 hours but for more than 1 hour, the gauge displays the average duty cycle
for the time that the base station has been operating.
Displays the highest of the three temperatures measured at the PA driver,
Final 1, and Final 2 transistors.
This thermometer displays the air intake temperature measured at the PA
heatsink. This display can be misleading if the PA has been transmitting
without the fan turned on: the displayed temperature will be much hotter than
the actual air intake temperature. If the fan has been running for 30s and the
PA is 5W or 50W, the reading will be accurate.
However, if the PA is a 100W PA, the value displayed will always be
approximately 10 to 15 degrees Celsius (18 to 27 degrees Fahrenheit) higher
than the actual ambient temperature.
The Power Management form (Monitor > Monitoring > Power Management)
lets you monitor the operation of the PMU. You can:
Check the voltage of the battery and the current that the PMU outputs to
the PA.
See whether the base station is running on battery or mains power.
Check the status of the PMU's inputs and outputs.
This form has a gauge displaying the battery voltage and another displaying the
output current. Rectangles represent the different PMU submodules and LEDs
indicate the status of power inputs and outputs. A rectangle is disabled if the
equivalent submodule is not installed.
over the past 5 minutes. This parameter is
Operational Information 75