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11
SS 16.4 Installation and Operation Manual
INSTALLATION
Input Channel Expansion:
Input expansion may be accomplished by connecting a shielded cable between the
first units EXT 1+ input terminal and the second units + unbalanced output. The
shield should be connected to the ground terminal. Follow the same procedure for
the EXT +1 right channel. The above example provides 32 inputs, with the first unit
providing the main output.
Remote Control:
Most front panel functions of the SS 16.4 may be remote controlled via removable
screw terminals located on the rear panel. The SS 16.4 accepts momentary contact
closures, open collector or 5-volt TTL/CMOS logic levels. Open collector status
and relays are provided.
Serial Interface:
The Serial Interface is jumper selectable. It uses either a multi-drop RS-232 trans-
ceiver, or a RS-485 transceiver. It is assumed to always be in a multi-drop configu-
ration. Software does not distinguish between RS-232 and RS-485 operation. It
always switches both transceivers between transmit and receive mode.
