Measurement Computing Data Translation DT3034, User Manual

Page: 42 / 178

Wiring Signals
41
Preparing to Wire to a Screw Terminal Panel
This section describes wiring recommendations when connecting signals to a DT3034 board
and screw terminal panel.
Wiring Recommendations
• Follow standard ESD procedures when wiring signals to the board.
• Use individually shielded twisted-pair wire (size 14 to 26 AWG) when using a DT3034
board in highly noisy electrical environments.
• Separate power and signal lines by using physically different wiring paths or conduits.
• To avoid noise, do not locate the 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.
• On the DT740 screw terminal panel, we recommend that you connect the shields as
follows:

Connect the analog shield to screw terminals TB35 and TB36, and to TB51 through
TB56.

Connect the digital shield to screw terminals TB105 and TB108.

Connect the analog and digital shields to one end only.
• When first installing the board, we recommend that you do the following:

Wire a function generator or a known voltage source to analog input channel 0 (use the
differential configuration).

Wire an oscilloscope or voltage meter to analog output channel 0.

Wire a digital input to digital I/O Port A.

Wire a external clock or scope to counter/timer channel 0.

If you have not done so already, install the DT3034 software.

Run the Quick DataAcq application (described in Chapter 5 starting on page 57 ) to
verify that the board is operating properly.

Once you have determined that the board is operating properly, wire the signals
according to your application’s requirements.