Specifications
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5
SS 4.1 Plus Installation and Operation Manual
DESCRIPTION
Front Panel Description
Source Switches
Each switch represents an input to be routed to the switcher’s output. High quality
tactile switches will give the user years of dependable service. Each switch has an
associated LED indicator, which will illuminate when that particular source is rout-
ed to the output. When a source is selected, the previous source will be deselected,
(interlocked). The front panel is also equipped with a MUTE switch and LED indi-
cator. This switch turns off the audio output. The ENABLE switch (if recessed, it
may require the use of a toothpick), when enabled, must be depressed in order for
any of the other switches to function. This function may be bypassed (default).
LED Indicators
Channel LED indicators will illuminate when the desired channel is selected. The
PWR LED displays valid power and TX/RX serial data activity. The mute LED illu-
minates when audio is off. The “ACT” (activity) LED is lit when audio is present
at the output. The silence sensor LED will illuminate when in an alarm condition.
Audio thresholds are set at -25db.
Rear Panel Description
The rear panel audio inputs, outputs and remote control (triggers) connections are
routed through plug-in euroblock screw terminals. A RJ-11 modular jack is provid-
ed for the multi-drop bi-directional RS-232 serial port.
Power
Connect the 2.1mm coaxial type power connector into the unit and the 9 VAC @ 1-
amp wall transformer into a 120 Vac 50-60 Hz power source. The front panel PWR
LED indicates when power is applied to the unit.
Audio Signal Connector
The SS 4.1 Plus is supplied with plug-in euroblock screw terminals and mating con-
nectors. Channel and polarity designators can be found on the chassis, as viewed
from the rear.
“Remote” Control Connector
Plug-in euroblock screw terminals and mating plugs are provided for connection to
equipment, which will remotely control the SS 4.1 Plus, unless the “PIP” (triggers)
function is enabled. Pulsing the “MUTE” input to ground (low) would turn off the out-
put of the SS 4.1 Plus until a front panel source switch is pressed, a remote control
input is activated, the unit is powered up and/or a serial command is received from a
PC or other serial device. Pulsing the “STEP” input to ground will step the unit one
source for each low to high transition on this input. Automatic sequence may be
accomplished by holding the step input low for two seconds. The unit will now step
to each source at a user programmable rate from 1 to 99 seconds. The number of
inputs sequenced may be programmed for channels 1 to 4. The step input is helpful
in freeing up valuable remote control channels. This feature may also be used to
sequence through multiple station air monitor signals for program on-hold feed.
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