Power Jumper Settings; Figure 7: Power Jumper Switch - SMC Networks FieldServer QuickServer FS-QS-12 0 Series Startup Manual

4.2.3 Power Jumper Settings

The QuickServer Carrier Board power jumper is set to position A by default, but can be changed to
position B for other power supply requirements.
Position A: The Carrier makes use of a full-wave rectifying bridge. Can be used for 12-24 VAC input or
9 – 30 VDC input. At 9 VDC this becomes marginal.
Position B: The Carrier makes use of a half-wave rectifying bridge. Best position for Grounded AC
Transformers and for using DC voltage down to 9VDC.

Figure 7: Power Jumper Switch

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QuickServer Start-Up Guide
Power Jumper Switch
in position "A"