Data Translation DT351, Getting Started Manual

Page: 39 / 52

Wiring Signals
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Preparing to Wire Signals
This section describes wiring recommendations and the pin
assignments of the STP37 screw terminal panel.
Wiring Recommendations
Keep the following recommendations in mind when wiring signals to
the STP37 screw terminal panel:
• Use individually shielded twisted-pair wire (size 14 to 26 AWG)
when using the DT351 board in a highly noisy electrical
environment.
• Separate power and signal lines by using physically different
wiring paths or conduits.
• To avoid noise, do not locate the STP37 screw terminal panel and
cabling next to sources that produce high electro-magnetic fields,
such as large electric motors, power lines, solenoids, and electric
arcs, unless the signals are enclosed in a mumetal shield.
• When first installing the board, it is recommended that you do
the following:
−
Wire a digital input signal to digital input line 0.
−
Wire an LED or other indicator to digital output line 0.
−
If you have not done so already, install the DT351 software.
−
Run the Quick Data Acq application (described in Chapter 7
starting on page 37 ) to verify that the board is operating
properly.
CAUTION:
To avoid electrical damage, ensure that power is turned off to the
computer and to any attached devices before wiring signals to the
STP37 screw terminal panel.