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7
SS 4.1 MLR/RJ Installation and Operation Manual
OPERATION
PIP Trigger/Remote Control Inputs
The SS 4.1 MLR/RJ interfaces to external equipment through removable euro-block
screw terminals. The terminals accommodate wire sizes from 16 - 28 AWG solid or
stranded wire. Before installing a wire, remove the euro-block screw terminal plug
and turn each capture screw fully counterclockwise. Strip each conductor to a length
of 0.25” and insert the conductor fully into the terminal. Turn the capture screw fully
clockwise to secure the conductor.
The SS 4.1 MLR/RJ has eight status inputs that may be configured for PIP (“trig-
gers”) or remote control operation and accept momentary contact closures (or sus-
tained, if break before make); open collector or TTL/CMOS input logic levels.
The PIP/remote control operation mode is set by the SW9-7 DIP-switch, when
SW9-7 is OFF the unit is in remote control mode and when SW9-7 in ON the unit
is in PIP mode. The PIP/remote control connections to the switcher are found on the
bottom row of the connector TB3. Each channel may be selected by a momentary
contact to ground. Each channel is pulled high (5-volts) through a 22K resistor.
In remote control mode the inputs are triggered by momentary closure to (pulse) to
ground (low.) For example, pulsing the “MUTE” input to ground would turn off the
output of the SS 4.1 MLR/RJ until a front panel source switch is pressed, a different
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 timed sequencing may be accomplished by hold-
ing the step input low. The unit will now step to each source at a user programma-
ble rate from 1 to 99 seconds (10 seconds by default). The last step channel is user
programmable and is set to 4 by default. This feature may be used to sequence
through multiple station air monitor signals for a program on-hold feed.
The SS 4.1 MLR/RJ is also capable of being used for EAS audio insertion via con-
tact closure. This feature is enabled by setting the EAS controlled input channel via
RS232 to the desired audio input channel (see the Serial Operation section of this
manual for more information.) Once an input channel has been designated the SS 4.1
MLR/RJ will automatically switch to that input for the duration of a sustained clo-
sure to ground on the “PIP8/EAS” remote control input. When an EAS controlled
input channel is configured PIP8 is not used for PIP triggers.
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(Top row, TB3)
See Below
GND
PIP1
PIP2
PIP3
PIP4
PIP5
PIP6
PIP7
PIP8
(IN-1)
(IN-2)
(IN-3)
(IN-4)
(Mute)
(Step)
(EAS)
PIP/Remote Control Inputs
(Bottom Row, TB3)
