Tait TB8100 User Manual page 168

Maximum PA
VSWR
Maximum PA final
temperature
Maximum PA
driver
temperature
PA air intake
temperature
PMU battery
voltage
Balanced line
input level
Unbalanced line
input level
RSSI level
158 Part G: Alarms
Defines the upper limit for the VSWR. When the VSWR exceeds this limit,
the base station triggers the alarm
VSWR fault becomes true. The hysteresis is fixed at 0.2. For example, if the
threshold is 1.5:1, when the VSWR falls to 1.3:1, the alarm is cleared and the
Task Manager input becomes false.
Defines the upper limit for the operating temperature at the Final 1 and Final 2
stages of the PA. When the temperature exceeds this limit, the base station
triggers one of the Temperature high
temperature high becomes true.
Defines the upper limit for the operating temperature at the driver stage of the
PA. When the temperature exceeds this limit, the base station triggers one of
the Temperature high alarms and the Task Manager input
becomes true.
The Maximum box defines the upper limit for the air intake temperature that
is measured at the PA. When the temperature exceeds this limit, the base station
triggers the Air intake temperature high
air intake temperature high
The Minimum box defines the lower limit for the air intake temperature that
is measured at the PA. When the temperature falls below this limit, the base
station triggers the Air intake temperature low
input PA air intake temperature low
The Max box defines the upper limit for the battery voltage that is supplied to
the DC-DC converter. Different limits apply, depending on which nominal
voltage the DC-DC converter is designed for. When the voltage exceeds the
relevant limit, the base station triggers the
Task Manager input Battery voltage high
The Min box defines the lower limit for the battery voltage that is supplied to
the DC-DC converter. Different limits apply, depending on which nominal
voltage the DC-DC converter is designed for. When the voltage falls below the
relevant limit, the base station triggers the
Task Manager input Battery voltage low
Both the upper and lower limits have a hysteresis of 0.1 V.
The Minimum box defines the lower limit for the level of the audio signal on
the balanced line in. When the audio level falls below this limit, the base station
triggers the Balanced input low
input low becomes true.
The Minimum box defines the lower limit for the level of the audio signal on
the unbalanced line in. When the audio level falls below this limit, the base
station triggers the Unbalanced input low
Unbalanced input low becomes true.
The Maximum box defines the upper limit for the received signal strength as
measured in the receiver. When the RSSI exceeds this limit, the base station triggers
the RSSI high alarm and the Task Manager input
The Minimum box defines the lower limit for the received signal strength as
measured in the receiver. When the RSSI falls below this limit, the base station
triggers the RSSI low alarm and the Task Manager input
true.
VSWR high and the Task Manager input
alarms and the Task Manager input
alarm and the Task Manager input
becomes true.
alarm and the Task Manager
becomes true.
Battery voltage high
becomes true.
Battery voltage low
becomes true.
alarm and the Task Manager input
alarm and the Task Manager input
RSSI high
© Tait Electronics Limited December 2007
PA
PA temperature high
PA
alarm and the
alarm and the
Balanced
becomes true.
RSSI low becomes