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8
SS 2.1 Term III Installation and Operation Manual
INSTALLATION
STEP 6: SERIAL OPERATION
Connecting the RS-232 serial port of the SS 2.1/Term III is accomplished by using
the supplied reversed modular cable and 9-pin “S9” female D-sub adapter between
the SS 2.1/Term III and controlling PC. Select the desired address for each unit.
Never duplicate addresses. The default protocol is as follows: 9600, N, 8, 1 (other
baud rates are user selectable).
To select a channel, send the following string: *ui
Where the
< * > Denotes start of string character.
< u > Unit ID (address, 0 through 3).
< i > Input channel (1, 2 or M (MUTE).
Example:
*02
This string would turn on channel 2.
*0M This string would MUTE the switcher’s output.
No serial status is provided.
Apply power to the SS 2.1/Term III via the wall transformer.
The SS 2.1/Term III is now ready to be operated.
Remote Control Wiring:
Control:
The front panel switches are brought out through the rear panel remote control con-
nector, providing a means of controlling the SS 2.1/Term III from a remote point.
These digital inputs may be a momentary or sustained action, compatible with 5
volts CMOS/TTL logic, open collector or contact closures to ground. The inputs are
pulled high. For wiring information, refer to the grid below.
Relays:
Relay contacts are supplied through the remote control connector as both individual
dry and wet relay contacts. K3, the SPDT relay is associated with input channel one.
K4 is associated with input channel two and provides SPDT dry contacts and selec-
table (JP3) N.O. or N.C. contacts common to the (+) positive 12vdc(400 ma, MAX)
power supply. This provides a simple way to control external devices such as RF or
power relays. K5 is associated with the mute function and is selectable (JP4)
between the N.O. or N.C. contacts common to ground. For wiring information, refer
to the grid below and/or the schematic in the rear of this manual.
TB 4
Relay Outputs
Top Row
K3 N.O.
K3 Common
K3 N.C.
K4 N.O.
K4 Common
K4 N.C.
1-IN
2-IN
M-IN (Mute)
GND
GXK5
+XK4
Inputs & Relay Outputs
Bottom Row
