DI–710 Series and DI-715B Series Hardware Manual
Instrument Controls, Indicators, and Connections
21
4. Instrument Controls,
Indicators, and Connections
Connecting the DI-710 to Ground
! IMPORTANT !
The ground connection on the I/O terminal strip should
always
be connected to a signal ground, if one is not inher-
ently made through analog or digital signal connections. Without this connection, the front end of the DI-710 does not
have a return path which could lead to inaccurate measurements. Under no circumstances should the DI-710 be used
in a measurement situation where it will experience common mode voltages in excess of ±30 VDC or peak AC (the
device’s full-scale range without damage).
The ground lug at the rear of the DI-710 should
always
be connected to a solid chassis or earth ground. This connec-
tion is mandatory for the unit to meet CE guidelines.
I
S
O
L
A
T
I
O
N
DATA
DATA
POWER
POWER
DI-710
Front End
Interface
USB/Ethernet
SD Memory
Card
Digital I/O
Analog Inputs
Rear Panel
Ground Lug
To signal ground
(if not inherently
made through
analog or digital
connections).
Solid Chassis or
Earth Ground
Connection
Two Critical DI-710 Ground Connections
Analog Ground
Connection
