Model DT33x-0700
4-Wire DC I/V Dual Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 12 -
http://www.acromag.com
- 12 -
https://www.acromag.com
Earth Ground Connections
The unit housing is plastic and does not require an earth ground connection. Internally, the inputs, outputs, and power
circuits are electrically isolated from each other, allowing each of these circuits to be individually earth grounded as
indicated. If the transmitter is mounted in a metal housing, a ground wire connection is typically required for the
enclos
ure and you should connect that metal enclosure’s ground terminal (green screw) to earth ground using suitable
wire per applicable codes. See the Electrical Connections Drawings for Inputs, Output, and Power, and note the position
of earth ground for each isolated entity. Ground connections shown are recommended for best results and help protect
the unit and its isolated circuitry by giving it a low impedance path to ground for shunting destructive transient energy
away from sensitive module circuitry.
•
Avoid inadvertent connections to earth ground at other points than those indicated, as this could drive ground
loops and negatively affect operation.
•
A USB isolator is recommended when configuring or calibrating a unit to avoid the ground loop that occurs if
your input is also earth grounded (A PC commonly earth grounds its USB port contacting both the USB signal and
shield ground which are held in common to the input circuit ground of this transmitter).
