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23 Chapter 3

3.5.1 AC/DC Power Connector (CN3, CN17)

These connectors accept the separate AC/DC power input.

3.5.2 Power Switch

This connector provides power control over the plug-in power module. If

the CompactPCI chassis provides a 2-pin power switch cord, connect this

cord to the CN15 connector to control the power by the power switch.

3.5.3 V I/O Voltage Selection

This jumper is used to select the V I/O voltage. The backplane allows

V I/O to be set to either 5 V or 3.3 V. Since the default is configured for

use with 5V CompactPCI boards (blue-keyed connectors), once the

jumper is set to 3.3 V, the CompactPCI keys must be changed to 3.3 V at

the same time (as yellow-keyed connectors).

Figure 3.5: V I/O voltage selection

Note:

The power connector CN17 is not compatible with

ATX pin assignment. Do not use an ATX power

supply instead of DC power supply.

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Advantech MIC-3043 Manuale Utente Pagina 33