Chapter 2
Setup
© National Instruments Corporation
2-7
ER-8/16 User Manual
7. You can now test your ER-8/16 without making any connections to the screw terminals by
writing to port A (0). When you write a digital 1 to port A (0), the DS1 LED should turn
green, indicating it is ON. You may also hear a clicking sound. Port A (0) corresponds to
channel 1 on the ER-8/16. Use this procedure to test all the channels on your ER-8/16.
Note:
LEDs are present only for verifying your digital cable connections.
Warning:
DO NOT
connect any wires to the channel screw terminals when you are
conducting this test. National Instruments is
NOT
liable for any damages
resulting from such connections.
If the ER-8/16 does not respond to the control signals, check your cable connections and
try again. If the test fails again, contact National Instruments.
8. Switch off your computer and the external power supply. Make wire connections to the
ER-8/16 channels by wiring to the proper screw terminals, marked NC, COM, and NO.
For additional information, refer to the Channel Connections section in Chapter 3, Signal
Connections.
9. When you have connected the wires, check the connections again.
10. Replace the top cover and screw it on tightly.
11. Turn on your computer and the external power supply.
Your ER-8/16 is now ready for operation.
TOP: DIO-32
BOTTOM: DIO-24
Figure 2-2. The ER-8/16 Front Connector
