D4023-EN
TMR3610 Operators Manual
59
16.2 Cable Connections
For accurate and reliable operation care should be taken when routing and connecting cables
to the Digi-Star Indicator.
Cables should be secured and protected from damage and abrasion.
Long cables should not “hang” by the cable connector at the Indicator but should be secured
to a structure close to the Indicator leaving a short “tail” to connect to the Indicator.
Special Considerations for Power (+) and Ground (-):
The Digi-Star Indicator is designed to operate at a continuous voltage ranging from 10.5
to 16.0 volts.
Intermittent voltage drops to as low as 9.0 volts, such as when starting an engine, will
be tolerated. Continuous low voltage will result in a Low Voltage warning on the display
or the Indicator will power off.
Voltage spike above 16 volts will damage the Indicator. Never weld or charge the
battery on the equipment that the Indicator is mounted to without disconnecting the
Indicator power cord. Never operate an Indicator on equipment with an engine charging
circuit when the battery has been removed.
Digi-Star recommends that the red power (+) and black ground (-) are connected as follows:
Power (+) can be either switched or keyed ON & OFF, or un-switched and always on.
Power (+) and Ground (-) should come from a dedicated auxiliary power source when
provided. When auxiliary power sources are not provided power should come from the
main power distribution system.
Fuse or circuit protection of at least 5 amps, but no more than 10 amps, should be
provided. Although the Indicator is protected internally by an internal fuse a fuse or
circuit protection is required to protect the power cable and equipment.
Ground (-) connection should be made to a main ground (the battery ground (-) is
often connected to this location). Do not use the chassis or frame of the equipment
as a ground.
Installation
