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MODEL 2000 TELEVISION MODULATOR
9.
Slow clamping for certain baseband scrambling methods.
We can provide many other optional configurations. Contact factory for information.
INSTALLATION:
MOUNTING:
This product is designed to be mounted in a standard EIA 19-inch wide rack. Space should be left above
and below the unit for ventilation. A climate controlled room is ideal but proper operation will occur over a
wide range of operating conditions. Depending upon other heat producing equipment in the rack, forced air
ventilation of the rack may be necessary to prevent excessive temperatures. If the mounted unit will be
subjected to severe mechanical shock, such as mobile use, the rear of the chassis should be supported.
POWER:
This product is equipped with a three-wire cord. The third prong should not be removed or otherwise
defeated. A SHOCK HAZARD COULD RESULT. This product will operate properly from power sources
almost anywhere in the world, although some cautions are in order:
1.
Ac voltages of 85 to 265 volts and 50 to 60Hz only may be used. If the voltage may exceed the
above maximum for even a short time, a step-down transformer or power line regulator is
recommended to reduce the maximum to well within the above range.
2.
Lightning and surge protection should be provided at the power entry of the building where this
equipment is installed.
3.
Proper grounding is important and should include bonding of racks together and connection of racks
to a good earth ground.
REAR PANEL CONNECTIONS:
Audio:
The audio input may be used balanced or unbalanced.
The audio is connected through a three-pin quick connect plug. To connect wiring pull the plug straight out
from the rear of the unit. With a small flat-bladed screwdriver, turn the screws counterclockwise to expose
the hole for the wire at the rear of the plug. Strip the wire approximately 1/4 inch (7mm) and insert in the
proper location of the plug. Tighten the screw clockwise to secure the wire. Reinsert the plug into the
receptacle on the rear of the modulator with the screw heads on the plug pointing up.
A balanced line can be a simple twisted pair or may have a shield over a twisted pair. The shielded line is
to be preferred to reduce noise and RF pickup especially for longer length runs.
For a balanced line, connect the two sides of the line to the + and
be connected to the cable shield if present. The center ground pin is connected to the chassis and, if hum
or noise due to a ground loop is experienced, try removing the ground connection to see if the condition
Revised June 1999
terminals. The center ground pin may
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