CalAmp INTEGRA-TR User Manual page 34

Note: Multi-Channel operation is available in modem firmware 2.20 or later.
Tx Controlled Fan Timeout
Tx Controlled Fan Timeout is used to set the interval of time the unit will keep the fan turned ON after a transmission is
completed. The range is 5 to 255 seconds in 1 second intervals.
Figure 22 - Integra Field Programming Software Digital I/O Screens
External I/O 2 (White)
These radio buttons select configuration of Pin 4 of the Power - I/O Connector (white wire):

Analog Input - for use on units not equipped with the cooling option - can be used to monitor an external
voltage (0 to 10 volts).

Rx TP Output - performs as the demodulated signal level test point. The Rx TP level is half of the internal Rx
Test Point.

Ant. SW Control - supports the use of a redundant base station. Ant. SW Control configuration is dependent on
hardware configuration and should not be changed in the field.

Digital Output - This connection can be used to control the open-collector transistor on the connector. The
open-collector output can sink a maximum current of 40 mA when the modem board rev is 0 and 100 mA
when the modem board rev is 1. The output is controlled from the Offline Diagnostics screen NOTE: When
configured as a Digital Output, the open-collector transistor requires an external pull-up (i.e., resistor) to a
voltage of 2 to 10 volts.
Channel Select 2
Selecting the Channel Select 2 option will configure the connection to be an analog input for 2 or 4 Channel Select Mode. If
Channel Select 1 IS NOT selected, this input selects between Channels 1 and 2. If Channel Select 1 IS selected, this input and
Channel Select 2 input selects between Channels 1,2,3 and 4. A low level input and Channel Select 2 input selects between
channels 1,2,3 and 4. A low level (logic 0) is a voltage less than the Channel Select Voltage and a high level (logic 1) is a
Integra-TR User Manual Page | 34