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Section 6 - CE Conformity
6.1 OM-DAQ-USB-2401 Design for CE Conformity
The OM-DAQ-USB-2401 has been designed to meet requirements as outlined in
European Community EMC Directive EN61326. Three ferrite cores are included
in the OM-DAQ-USB-2401 package. When powering the unit using the adapter,
the ferrite cores must be attached to both the USB cable and the power adapter to
meet EFT (Electrical Fast Transient) specifications. Refer to Figure 6-1.
Figure 6-1. OM-DAQ-USB-2401 with Ferrite Cores Installed
To maintain CE certification and install the ferrite cores, perform the following:
1. Using a small screw driver or other suitable instrument, unsnap the ferrite
core to open it (as shown in Figure 6-2).
2. Install one ferrite core on each far end of the USB cable, and one ferrite core in
the middle of the cable (as shown in Figure 6-1).
3. Install one ferrite core on each far end of the power adapter, and one ferrite
core in the middle of the cable (as shown in Figure 6-1).
6-1
CE Conformity
6
(MIDPOINT OF CABLES)
USB
POWER
ADAPTER