Comtech EF Data SDM-309B - Manual (Page 99)

M&C and Interfaces SDM-309B Satellite Modem
4-4–22 MN/U-SDM309B Rev. #
4.2.1.9.8 Receive Data (J8)
This connector is the interface for the unbalanced Receive Data input. To activate this
connector SW3 must be in the UNBAL position. If the balanced Send Data input is to be
used, SW3 must be in the BAL position. Switch 3 is located on the front panel to the
right of the receive data input.
4.2.1.9.9 Alarm Outputs (TB1)
The alarm outputs are provided on a 8 position terminal block located on the front panel
of the breakout panel.
Signal Function Name Pin Number
GROUND GND 1, 5
PRIMARY ALARM PRI_COM
PRI_NO
PRI_NC 2
3
4
SECONDARY ALARM SEC_COM
SEC_NO
SEC_NC 66
7
8