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1257 User Manual
Troubleshooting C-4
EADS North America Defense
Test and Services, Inc.
©
2001
PROBLEM
POSSIBLE CAUSES
WHAT TO DO
•
Baud rate too high for cable
and terminal being used.
•
Change to a lower baud rate.
Make sure that the new 1257
baud rate matches the new
terminal baud rate (to set the
1257 baud rate, see
Chapter
4, GPIB and RS-232
Interfaces
, under the heading
Setting the Baud Rate
).
•
Cable is excessively long,
or not of high quality.
•
Use a high-quality, shielded
cable.
Text from 1257 to remote
terminal overwrites itself,
staying on one line.
•
Termination characters of
1257 not compatible with
terminal setup.
•
Set 1257 to use carriage return
and line feed (CR-LF) as
termination characters (see
Chapter 4, GPIB and RS-232
Interfaces
, under the heading
Setting the Message
Termination Characters
).
Text from 1257 to remote
terminal is double-spaced
(lines of text are separated by
blank lines).
•
Termination characters of
1257 not compatible with
terminal setup.
•
Set 1257 to use only carriage
return (CR) as termination
character (see
Chapter 4,
GPIB and RS-232 Interfaces
,
under the heading
Setting the
Message Termination
Characters
).
•
Echo mode of remote
terminal is not set to half-
duplex (local echo).
•
Set terminal for half-duplex
(local echo) mode. Consult the
terminal user’s manual for
instructions.
Remote terminal does not
display characters that are
typed.
•
HyperTerminal (included
with Microsoft Windows)
fails to echo characters
properly. Certain versions
of HyperTerminal do not
operate correctly in all
cases
•
Download newer version,
known as “HyperTerminal
Private Edition” from:
http://www.hilgraeve.com
or use other terminal
communication software.