NuPower
TM
11B02A-TAC2 User Manual
Rev 1.0
7
3.6
DC POWER SWITCH
The DC Power Switch on the front panel will allow or remove power applied to the V Supply pin. This
enables the user to connect a battery or power supply to the module without consuming unwanted
power. Connect the interface cable to a power source and place switch toward ‘DC Power’ position to
place the amplifier in
standby
mode.
3.7
RF ENABLE
The RF Enable line on the external interface cable controls the internal amplifiers’ bias. When the RF
Enable line is left floating, the NuPower 11B02A-TAC2 will be in
standby
mode. Pulling the line low (-
0.5VDC to +1.5VDC, or GND) will place the module in
transmit
mode.
Note: The RF Enable line is pulled high internally and does not require applying a voltage.
3.8
TEMPERATURE FLAG
The Temp Flag line on the external interface cable is an indicator of an over-temperature condition in the
NuPower 11B02A-TAC2. A Logic HIGH (+5VDC) signal indicates normal operation, while a Logic LOW
(0VDC) indicates an over-temperature fault condition. The NuPower 11B02A-TAC2 incorporates internal
logic circuitry that turns off the DC bias to the RF transistors to naturally allow the module to cool off.
Default thermal shutdown point is +85°C and will restore bias and be fully functional when unit cools to
approximately 70°C.
