7700 MultiFrame Manual
7707IT Multi-Channel Intercom Fiber Transceiver
Revision 1.7
Page - 5
2.2.
SIGNAL CONNECTIONS
Figure 2-2: Terminal Block Wiring
Simultaneously insert a signal wire (28-18 AWG) and use a screwdriver to secure it into the block as
shown in Figure 2-2. The screwdriver will push a tension clamp and will allow the insertion of the wire.
Wire positions correspond to detailed pin-outs as shown in Figure 2-4. Fasten screws to the rear plate at
the top and bottom once connected.
INTERCOM/AUDIO/DATA/GPIO:
These multi-pin removable terminal blocks have the connections for
bi-directional analog intercom audio, bi-directional serial data and general purpose
input/outputs. The functions of some of the pins change with configuration. Please refer to the
pinout diagram shown in Figure 2-4.
Never apply a powered or “wet” party-line intercom signal to a terminal that is not
designated as a party-line connection.
