Xerox 4213 MICR MRP Merkblatt
INTERFACES
Table 1-6.
Asynchronous serial signals and pin assignments
Pin
Signal
Telephone Co.
designation
designation
CCITT
designation
designation
1
Protective Ground
AA
101
2
Transmitted Data
BA
103
3
Received Data
BB
104
4
Request to Send
CA
105
5
Clear to Send
CB
106
6
Data Set Ready
CC
107
7
Signal Ground (common
return)
return)
AB
102
8
Carrier Detect
CF
109
11
Printer Ready
None
None
20
Data Terminal Ready
CD
108
Null modem
A null modem is a device which eliminates both a modem and a
telephone line. Figure 1-6 illustrates typical null modem wiring.
When the 4213 is used with an asynchronous serial interface
connected to a DTE host (such as a PC-compatible), a modem,
modem eliminator, or a null modem is required. Figure 1-6
shows null modem wiring.
telephone line. Figure 1-6 illustrates typical null modem wiring.
When the 4213 is used with an asynchronous serial interface
connected to a DTE host (such as a PC-compatible), a modem,
modem eliminator, or a null modem is required. Figure 1-6
shows null modem wiring.
XEROX 4213 LASER PRINTER PROGRAMMER REFERENCE
1-15