3.10.1 AT Power Mode. IEI Technology POC-17C-ULT3

POC-17C-ULT3 Medical Panel PC

3.9 RS-232/422/485 Serial Port Connection

The bottom panel of the POC-17C-ULT3 has one DB-9 male connectors for

RS-232/422/485 connection. The serial communication mode selection can be made through the BIOS options. Please refer to

Section 4.3.3.1.1

for detailed information. The

pinouts of the DB-9 connector are listed below.

Pin RS-232 RS-422 RS-485

2 RX

3 TX RXD422+

4 DTR RXD422-

5 GND

6 DSR

7 RTS

8 CTS

9 RI

Table 3-2: RS-232/422/485 Serial Port Pinouts

3.10 AT/ATX Mode Selection

AT or ATX power mode can be used on the POC-17C-ULT3. The selection is made through an AT/ATX switch located on the bottom panel (

Figure 3-24 ).

Figure 3-24: AT/ATX Switch Location

3.10.1 AT Power Mode

With the AT mode selected, the power is controlled by a central power unit rather than a power switch. The POC-17C-ULT3 panel PC turns on automatically when the power is connected.

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