Specifications

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

SECONDARY ALARM SEC_COM

SEC_NO

SEC_NC