NCI 122X User Manual page 22

Model 1220 (2600) Model 1220 (2600) Model 1220 (2600) Model 1220 (2600) Model 1220 (2600)
RS RS RS RS RS-232 Serial V -232 Serial V -232 Serial V ersion ersion
-232 Serial V -232 Serial Version ersion ersion
Pin No. Pin No. Signal Signal
Pin No. Pin No. Pin No. Signal Signal Signal
1 Chassis ground
2 (RD) Received data
5 (CTS) Clear to send
7 (SG) Signal
17 17 17 17 17
DTE Direction DTE Direction
DTE Direction DTE Direction DTE Direction
_
To printer
From printer
_
The rest are not used.
Serial Interface V Serial Interface V Serial Interface V Serial Interface V Serial Interface Voltage L
Received data:
Mark = OFF = Logic "1" = -25V to -3V
Space = ON = Logic "0" = +25V to +3V
Clear to send:
Busy = OFF = Logic "1" = -9V
Not Busy = ON = Logic "0" = +9V
Transmitted data:
Mark = OFF = Logic "1" = -9V
Space = ON = Logic "0" = +9V
oltage L oltage L oltage Levels oltage L evels evels evels evels
Description Description
Description Description Description
Cable shield
Printer data input line
Signal (equivalent to
BUSY) indicating that
printer is ready for
operation and can
receive data.
Signal Ground