TE C H N I C A L S P E C I F I C A T I O N S
Connectors and Pinouts
350-9047 v3.0.1
DGy Model 201x User’s Guide
130
. . . . .
N U L L M O D E M
Connecting the
DGy 201x
’s serial port to a computer configured as Data
Communications Equipment (DCE) is done using a null modem. The net
effect of a null modem is to reverse the Transmitted Data and Received
Data connections within the cable. Also, the Request to Send (RTS) and
Clear to Send (CTS) connections are reversed. This may be done by
using a special null modem cable, or by inserting a small null modem
box or cable in series with a regular straight through cable.
6
DSR
Data Set Ready
7
CTS
Clear to Send
8
RTS
Request to Send
9
(not connected)
Table A-12
RS-232 Serial Connector Pinouts (Continued)
Pin
Circuit
Description