Black Box IC026A-R2 Manual De Usuario
21
CHAPTER 3: Getting Started
3.4 Selecting Terminator Substitution
The interface converter can be configured to provide RS-232-to-IEEE-488 and
IEEE-488-to-RS-232 terminator substitution. This is useful when interfacing an
RS-232 device which only issues carriage return [CR] as an output terminator
to an IEEE controller which expects a carriage return followed by a line feed
[CR-LF].
IEEE-488-to-RS-232 terminator substitution. This is useful when interfacing an
RS-232 device which only issues carriage return [CR] as an output terminator
to an IEEE controller which expects a carriage return followed by a line feed
[CR-LF].
In a case like that, the serial terminator should be selected for CR Only while
the IEEE terminator is set to CR-LF. When a serial CR character is received,
it is discarded, and an IEEE CR-LF is substituted for it. In the IEEE-to-RS-232
direction, the IEEE CR is unconditionally discarded. Upon receipt of the
IEEE LF, a serial CR is substituted.
the IEEE terminator is set to CR-LF. When a serial CR character is received,
it is discarded, and an IEEE CR-LF is substituted for it. In the IEEE-to-RS-232
direction, the IEEE CR is unconditionally discarded. Upon receipt of the
IEEE LF, a serial CR is substituted.
The interface converter can be made totally data transparent by setting both
the serial and IEEE terminators to be CR Only or LF Only.
the serial and IEEE terminators to be CR Only or LF Only.
3.4.1 S
ERIAL
T
ERMINATOR
SW2-3 and SW2-4 select the serial terminators for the serial input and output.
The factory default is LF Only.
The factory default is LF Only.
Figure 3-8. Switch SW2: Selecting the Serial Terminator.
Switch
Side
View
DOT
CR Only
1 2 3 4 5 6 7 8
OPEN
LF-CR
1 2 3 4 5 6 7 8
OPEN
1 2 3 4 5 6 7 8
OPEN
LF Only
1 2 3 4 5 6 7 8
OPEN
CR-LF