Installation guide

E-10



Switches

The following switch settings corresponding to each Serial Interface need to be

signified. To set the switches, remove the PS-A’s Rear Cover and locate the fol-

lowing switches, next to the PS-A’s circuit board. For information about attach-

ing/removing the Rear Cover,

5. Installation



Removing and Install-

ing the Rear Cover The switches are located as follows;

COM1

PCI

COM3

BAT

• COM3 and COM4 cannot be used for +5V Output.

• Do not connect any pins to COM3 [NC].

• No. 5 pin (GND) for RS-232C (COM1,COM2,COM3, COM4) is the

signal ground. Be sure to connect the GND terminal to the other

unit’s SG (signal ground) terminal.

• Be sure to confirm what settings will be used by the other device

when setting the switches. Failure to do so can result in a unit mal-

function or damage.

• Whenever changing any PS-A switch settings, be sure to first turn

the PS-A’s power supply OFF. Failure to do so can cause a PS-A

malfunction.

• Connect the FG terminal line to the connector cover's PS-A connec-

tor attachment screw.

• FG and SG terminals are internally connected in the PS-A. When

connecting to another device, be sure to create an SG shorting loop

in your system.

Use inch type (#4-40UNC) threads to hold the cable's set (attachment) screws

in place.

COM4

USB

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