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7
SS 2.1 Term III Installation and Operation Manual
INSTALLATION
STEP 1: INSPECTION
Please examine your SS 2.1/Term III carefully for any damage that may have been
sustained during shipping. If any is noted, please notify the shipper immediately and
retain the packaging for inspection by the shipper. The package should contain the
SS 2.1/Term III, 9 vac@500-ma wall power transformer, manual, reversed modular
cable and “S9” 9-pin female D-Sub adapter.
STEP 2: SOURCE TERMINATION RESISTOR REMOVAL
Input sources that are not selected are terminated with a 10K
Ω
load (1/4 watt max-
imum). If you do not want this load applied across the deselected sources, it may be
removed from each channel. Each channel has a pair of resistors.
EXAMPLE: Channel 1, relays K1 A&B switches the signal; R1 & R2 are the 10K
Ω
load resistors. As delivered, all channels are configured with these resistors
installed. To remove the load resistors from a channel, locate via the schematic the
proper resistors for that channel, cut its leads and discard the resistors.
STEP 3: BENCH TEST
Place each unit on a workspace and connect power to the unit. Check to see if the
power LED is lit. Connect an audio source to stereo input one and a monitoring
device to the output. Select channel one and verify that audio is present. Repeat
the process until each channel’s operation has been verified. This would also be a
good time to set up the desired switch or jumper options.
STEP 4: MOUNTING
Mount the unit on a rack shelf, such as the Broadcast Tools RA-1, allowing adequate
airflow for cooling. The RA-1 is furnished with filler panels to cover open spaces.
STEP 5: CONNECT YOUR EQUIPMENT
The SS 2.1/Term III interfaces to your equipment (sources, loads and remote con-
trol) through removable screw terminals. Follow the silk-screened legends for the
desired connections on the rear panel of the chassis. Remove the connector and use
a small screwdriver to loosen each screw terminal, insert the stripped wire (18 to 26
gauge wire), tighten the screw and reinsert the connector. Refer to the remote con-
trol connector-wiring chart on page 8.
TB1 –>TB3
Typical I/O connector
I/O – Left
I/O + Left
Gnd
I/O – Right
I/O + Right
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