Rs232 Connections - Hach DR/820 Instrument Manual

SECTION 6,
continued

6.2 RS232 Connections

Figure 9 RS232 Connection
The RS232 receptacle on the Data Transfer Adapter connects
with a 9-pin Sub-D connector (see Figure 9 RS232 Connection).
A suitable RS232 cable is listed under Optional Accessories in
REPLACEMENT PARTS AND ACCESSORIES on page 57.
The RS232 interface output is an eight-bit data word plus one
stop bit and no parity with a baud rate of 1200. It can
communicate with either a serial printer or a serial
communication port on a computer.
Press the key to send data to the printer or computer. See
PRINT
Section 6.3 Sending Data to a Printer or Computer
for instructions.
With the use of a serial-to-parallel converter, the data string
transmitted from the colorimeter prints on any compatible
parallel printer of the type normally used with IBM
compatible applications.
All RS232 connections are made using the serial
DTA. This port uses an industry standard 9-pin connector. See
Figure 9 RS232 Connection.
Note: For optimum performance and ESD protection, use a five-
conductor shielded cable. Use a metal shell for the printer or CRT
terminal connector, and connect the shield of the cable to the metal
shell and to the sleeve (signal ground) of the RS232 plug.
44
/O port on the
I