Operation
2-2
Cable and Power Connections
Internal Communication Devices
The following table lists the internal interface devices used in HV ANSI Series terminals.
Table 2-2: Interface Devices
Interface
Manufacturer
Device
RS-232
Linear Technology
LT1281
RS-422
Linear Technology
LTC490
Signal and Pin Assignments
Permanent Wire Connection
describes the signal and pin assignments for HV ANSI Series terminals that have a permanent
wire connection.
Table 2-3: Permanent Wire Connection Signal and Pin Assignments
Pin
Color
Signal
1
Blue
Common
2
Green
RXD (to terminal)
3
Yellow
TXD (from terminal)
4
Red
DTR (from terminal)
5
Black
DSR (to terminal)
6
White
+ Supply (to terminal)
Modular Interface Connector
depicts the standard six-pin modular interface connector found on the HV ANSI Series
terminal.
describes its signal and pin assignments.
Warning
: Use the six-pin modular receptacle for compatible serial devices only. Despite its physical
similarity to modular telephone connectors, it is not compatible with telephone lines or signals. Connecting
the terminal to a telephone line will damage it and void the warranty.
Figure 2-2: Modular Interface Connector
Table 2-4: Modular Interface Connector Signal and Pin Assignments
Pin
RS-232/CMOS/TTL
RS-422
1
+ Supply to terminal
+ Supply to terminal
2
Handshake-In to terminal
+ Data-In to terminal
3
Handshake-Out from terminal
+ Data-Out from terminal
4
Data-In to terminal
- Data-In to terminal
5
Data-Out from terminal
- Data-Out from terminal
6
Common
Common
Viewed facing connector