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Serial Port 48
Serial Port 6
The serial port provides a standard 9-pin connector that allows you to use the pen tablet with an external
serial device. Pin assignments for the serial port connector are shown in Table 6-2.
DC Power Input 6
The DC power input connector connects to the AC adapter or auto adapter to power the pen tablet. The
DC power input connector is a two-conductor connector with a center pin and sleeve. Pin assignments for
this connector are given in Table 6-3.
When a DC power source is connected to the DC power input on the pen tablet, circuitry built into the
pen tablet provides protection against reverse polarity and overvoltage.
Table 6-2. Serial Port Connector Pin Assignments
Connector Pin Locations Pin Signal Name
Host I/O
1CD
2 RD (RxD)
3SD (TxD)
4ER (DTR)
5 SG (GND) -----
6 DR (DSR)
7RS (RTS)
8CS (CTS)
9CI (RI)
Table 6-3. DC Power Input Connector Pin Assignments
Conductor Description Comments
Center Pin 16 Volts DC ±10%, 3.36 A (Hosiden part number
HEC3900-01-010)
This connector is a
EIAJ-RC5320A standard
connector. See “DC Power Input
Connector Pin Assignments” on
page 48 for more details.
Sleeve Ground