Specifications

153
Connector Details
Connector J1 (DB-9 Printer/Software Configuration Connector)
This connector is a serial port. It is connected to the 9-pin D-connector on the bottom of
the Model 6203 case. This port serves two different functions based on the position of
SW1-8. If SW1-8 is in the ON position, this port is used to access the Software
Configuration Program with an RS-232 terminal. If SW1-8 is in the OFF position, this
port outputs Model 26 CAD generated text messages. The port operates with the following
data parameters (8N1):
Start Bits = 1
Stop Bits = 1
Data Bits = 8
Parity = None
When operating in the Software Configuration mode, its baud rate is selected by SW1-7
(off = 1200, on = 9600). When operating as a CAD text message logger, its baud rate is set
in PRINTER BAUD RATE MENU, in the Software Configuration Program.
The voltage and current levels at this port are RS-232 compatible; however, its pin
connections are not. (See the note following the pinout.) The pin connections for this port
are listed in the following table.
Table 7: J1 Serial Port Pinout
Pin Description
Pin 1 This pin is not connected.
Pin 2
(RXD/NC)
This pin is RXD if JP-13 is in position “A”. There is no connection
otherwise. See the note that follows this table.
Pin 3
(TXD)
Data output
Pin 4
(RXD/DTR)
This pin is RXD if JP-13 is in position “B”. It is pulled up to +12V
through 4.7K (DTR) otherwise. See the note that follows this table.
Pin 5
(GND)
This pin is connected to the Model 6203 chassis ground.
Pin 6 This pin is not connected.
Pin 7
(RTS)
RTS Output
Pin 8
(CTS)
CTS input, this pin is pulled up to +12V through 10K.
Pins 9 This pin is not connected.
Note If the Zetron interface cable (P/N 709-7208) is being used, then JP-
13 should be in position “B”. If an off-the-shelf RS-232 null modem
cable is being used, then JP-13 should be in position “A”.