Radian RD-30 - Built-in Computer

RD-30 Operations Manual
Operations Overview
22
4.13 Built-inComputer
For RD-30s ordered with the Built-in Computer option, the display screen is a color active, QVGA
LCD. The diagonal display size is 14.4 cm (5.7”). The display’s pixel format is 320 (H) x 240
(V) and the display is backlit with a single CCFT.
The RD-30 display incorporates “touch screen” technology that allows the user to easily ma-
nipulate the display. The RD-30 is shipped with a stylus to be used in conjunction with the touch
screen.
Guard– should be tied to the common of the Wye source for Wye usage and left to oat in Delta
use applications. Because the Analog Sense is common with the Guard ground, care must be
taken to avoid ground loop problems.
V
1,2,3
/V
N
– the three V
N
connections should be tied together, via twisted wire pair, with their as-
sociated Potential Inputs (V
1
, V
2,
V
3
). At the Device Under Test (DUT), each V
N
should be broken
out from its associated twisted wire pair and each tied to the DUT Neutral with the three Potentials
(V
1
, V
2
, V
3
) tied to the three Potential connections of the DUT. The three Potentials (V
1
, V
2,
V
3
) of
the DUT should be tied to the associated three Potentials of the source. If using a Wye source, the
Neutral from the DUT, containing the three V
N
s, should be tied to the Wye source neutral. If using
a Delta source, the DUT Neutral, containing the three V
N
s, should be allowed to oat.