National Instruments ER-8 User Manual page 20

Setup
2. Remove the top cover of your ER-8/16 by removing the four screws located on the bottom
of your unit.
3. Connect the 50-pin interfacing cable to the appropriate 50-pin connector located on the
front end of the ER-8/16 as shown in Figure 2-2.
• If you are connecting a DIO-24 device to the ER-8/16, use the DIO-24 50-pin
connector. This is the bottom connector.
• If you are connecting a DIO-32 board to the ER-8/16, use the DIO-32 50-pin connector.
This is the top connector.
Warning:
Connecting the cable to the wrong connector can damage the ER-8/16 or
your DAQ device. National Instruments is
resulting from such connections.
Only one of the following connectors should be used and connected when
operating the ER-8/16: the DIO-24, DIO-32, or IN connector. National
Instruments is
connections.
• If you are daisy chaining the ER-8/16 or using the SC-205X Series cable adapter,
connect the 26-pin cable to the correct 26-pin connector, either IN or OUT. For
additional information on signal connections and cabling refer to Chapter 3, Signal
Connections.
4. Switch the +5 V power supply switch (SW1) to the correct position, either INT or EXT.
The switch position depends on the number of channels and the type of DAQ device you
are using with the ER-8/16. Set the switch to INT if you are using your DAQ device's
internal +5 V supply. Set the switch to EXT if you are using an external +5 supply. For
additional information on power supply connections, refer to the Power Supply section in
Chapter 3, Signal Connections.
Note:
By default, your ER-8/16 is shipped with SW1 set to the EXT position.
5. Verify the connections and setup.
6. Turn on the external power supply, if necessary, then turn on your computer. The red
Power LED should light up indicating that the ER-8/16 is receiving power. If the red
Power LED does not light up, verify that the power supply connections and electrical
power supply are switched ON. If the connections and external power supply are working,
check the electrical continuity on fuses F1 and F2. If the continuity test fails on these
fuses, a fuse is blown. You can either replace the fuse yourself or send it to National
Instruments for replacement.
Note:
The fuses are socketed. If you choose to replace them yourself, the fuse
specification is LIT-PICOII, 2 A, 125 V, fast. The manufacturer is Littelfuse,
and the manufacturer part number is R251002T1.
ER-8/16 User Manual
liable for any damages resulting from any other
NOT
2-6
liable for any damages
NOT
© National Instruments Corporation
Chapter 2