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5
SS 8.1 MLR/RJ Installation and Operation Manual
INSTALLATION
Installation
Surge Protection
The SS 8.1 MLR/RJ has built-in resistance to voltage changes; we recommend that
you use a power surge protector or line conditioner on the incoming AC line.
Lightning strikes and/or other high voltage surges may damage your SS 8.1 MLR/RJ
and connected equipment if it is not properly protected. For lightning protection
devices, check out www.polyphaser.com and www.itwlinx.com.
UPS Standby Power System
We recommend that you connect your SS 8.1 MLR/RJ to a UPS system. A UPS
helps minimize the risk to the SS 8.1 MLR/RJ and provides power during a power
outage.
NOTE: If power is lost, the last selected channel is passed to the output.
Installation/Operation
Input, Mute, and Enable Push Buttons
Each of the eight audio inputs and mute can be selected via its front panel push but-
ton labelled “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8” and “Mute” respectively. Each
input push button has an associated LED indicator which will illuminate when the
channel is selected. When an input channel is selected, the previous channel is des-
elected (interlock). The “Enable” (safety) push button can be configured to require
the user to hold down the enable push button while selecting any of the other front
panel push buttons, see page 9 for more information.
LED indicators
• “PWR” LED: Illuminates when power is applied and blinks when serial data is
active.
• “PIP” LED: Flashes to indicate PIP/trigger activity.
• “ACT” LED: Illuminates when audio is detected on the output.
• “SS”: Silence Sensor indicator LED, lit when silence is detected (if enabled.)
• Channel (“1-8”) LEDs: illuminate when the channel on.
Power
Connect the 2.1mm barrel type center positive power connector into the unit and the
9 to 12 VDC power supply with domestic connector into a 120 Vac 50-60 Hz power
source. Never use any type of power supply other than the specified/supplied power
supply.
Chassis Ground screw (CHS GND):
The #6-32 sized chassis ground screw should
be tied to the station (house) or system ground.
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