Specifications

3-2
MiniScan MS-320X Integration Guide
Electrical Interface
This section describes the pin functions of the MS-3204 scanner.
Figure 3-1. MS-3204 Connector
Table 3-1. MS-3204 Electrical Interface
Pin
No.
Pin Name Type* Function
1Trigger I Signals scanner to begin scanning session.
2TXD OSerial data transmit output. Drives the serial data receive input on the
device communicating with the scanner.
3RXD I Serial data receive input. Driven by the serial data transmit output on the
device communicating with the scanner.
4 Not used
5Ground Power supply ground input and signal ground reference.
6Power I 5.0 VDC ± 10%
7CTS I Clear-to-send handshaking input line, used only in conjunction with the
RTS line. Optionally used by another device to signal the scanner to
begin transmitting data.
8RTS ORequest-to-send handshaking output line, used only in conjunction with
the CTS line. Optionally used by the scanner to signal another device
that data is available to send.
9Beeper/
Download
I/O During normal operation this signal functions as an external beeper
drive line. This signal can sink 50mA of current to drive an external
beeper, and is normally pulled up. This signal is also used to begin Flash
Download operation when grounded externally during power up.
*I = Input O = Output