User manual

 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. 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
Select to 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 voltage greater than the Channel Select Voltage. Channel Select Voltage is selected on the Radio Tab. For 2
Channel Select Mode, a low level input will select channel 1 and a high level will select Channel 2. For 4 Channel
Select Mode, see Table 6.
Table 6 - 4 Channel Select Mode
Channel Select 2 Channel Select 1
Channel 1 low low
Channel 2 low high
Channel 3 high low
Channel 4 high high
4.3.1.3 SET UP MODEM/RADIO PARAMETERS: RADIO TAB
The Radio tab allows user programming of various radio parameters.
Figure 20: Radio Setup Parameters Screen
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