Data Translation DT9834 Series, Руководство пользователя

Страница: 37 / 186

37
Preparing to Wire Signals
This section provides recommendations and information about wiring signals to the BNC or
STP connection box.
Note: The STP connection box is provided for the 32-analog input channel version of the
module only (DT9834-32-0-16-STP).
If you are using the D-sub connectors on the BNC box or the OEM version of the DT9834
Series module, use this chapter for conceptual information, and then refer to
Appendix C for
connector pin assignments and accessory panel information.
Wiring Recommendations
Keep the following recommendations in mind when wiring signals to a BNC connection box:
• Follow standard ESD procedures when wiring signals to the module.
• Use individually shielded twisted-pair wire (size 14 to 26 AWG) 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 box and cabling next to sources that produce high
electromagnetic fields, such as large electric motors, power lines, solenoids, and electric
arcs, unless the signals are enclosed in a mumetal shield.
• Prevent electrostatic discharge to the I/O while the box is operational.
• Connect all unused analog input channels to analog ground.
Wiring to the BNC Box
The BNC connection box contains both BNC connectors and 37-pin, D-sub connectors. An
example of a BNC connection box is shown in
Figure 5 .