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8.9 Notes on Interface
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8.9.2 RS-232C Troubleshooting
Symptom Cause/Treatment
The RS-232C has stopped
working completely.
Are the cables properly connected?
Are all the devices powered on?
Are the cables properly connected?
Transmission on the RS-232C is
not taking place properly.
Is the controller message terminator set correctly?
("TRAN:TERM" command)
(Refer to "Message Terminators")
Is RS-232C (band rate, data length, parity, stop bits) set the
same?
After transmission on the RS-
232C, the keys on the 3332
freeze up and have no effect.
Press the LOCAL key on the front panel of the 3332 to
release the remote state.
When attempting to read data
using a Basic INPUT statement,
the RS-232C hangs.
Be sure to transmit one query before each Basic INPUT
statement.
Have any of these transmitted queries resulted in an error?
Although a command has been
transmitted, nothing has
happened.
Using the "
*
ESR?" query, inspect the standard event status
register, and check what type of error has occurred.
Sending several queries, produces
only one response.
Has an error occurred?
Send the queries one at a time, and read the responses
individually.
When you want to read them in all at once, try doing so by
putting them all on one line separated by the message
separator character.
Have you used the "
*
IDN?" query?
The response message to a query
differs from the display on the
front panel of the 3332.
Due to the response message being produced at the instant
that the 3332 receives the query, there is a possibility that it
may not agree with the display at the instant that the
controller reads it in.
Although printer mode has been
set, printing has not work.
Check the pin for "receive data" of RS-232C on the printer.
For a printer with pin 2 for "receive data", use a "straight"
cable, also for a printer with pin 3 for "receive data",
"cross" cable.
Although the printer mode has
been set, printing has not work.
Has the printer been set to listen only?
Has print interval time (DATA OUT TIME) been set to
000:00:00? In this case, set interval time.
Pressing DATA OUT key or HELP
key displays "Err 021".
Has RS-232C interface been equipped?
Has the 3332 been set to printer mode?