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14.1 Troubleshooting
291
14
4. Communications issues
The communications monitor (p.231) function can be used to more easily check operation.
No
Issue
Items to check
Possible causes
→
Solutions
See
4-1 The instrument is
not responding at
all.
Display
RMT
is not
being displayed.
No connection has been established.
→
Check whether the connector has been
connected.
→
Check whether the interface settings have
been configured properly.
→
(USB) Install the driver on the control
device.
→
(RS-232C) Use a cross cable.
→
(USB, RS-232C) Check the COM port num-
ber on the control device.
→
(RS-232C) Use the same communications
speed for the instrument and the control
device.
RMT
is being
displayed.
Commands are not being accepted.
→
Check the software delimiter.
→
(GP-IB) Check the message terminator set-
ting.
→
(GP-IB) Check whether the address setting
has been configured properly.
4-2 An error is being
encountered.
Display
Command error
The command isn’t being recognized as a
valid instruction.
→
Check the spelling of the command (space:
x20H).
→
Do not append a question mark to com-
mands that are not queries.
→
(RS-232C) Use the same communications
speed for the instrument and the control
device.
The input buffer (256 bytes) is full.
→
Insert a dummy query after sending several
lines of commands.
Example: Send
∗
OPC?
→
Receive
1
Execution error
The command string is correct, but the instru-
ment is not able to execute it.
Examples:
• When set during scanning
• The data portion was spelled incorrectly.
:SAMP:RATE SLOW3
→
Check the specifications of the command(s)
in question.
The input buffer (256 bytes) is full.
→
Insert a dummy query after sending several
lines of commands.
Example: Send
∗
OPC?
→
Receive
1
4-3 The instrument
fails to respond to
queries.
Commu-
nications
monitor
No response
The
:TRIG:SOUR EXT
setting is being
used, and the instrument is waiting for the trig-
ger after
:READ?
transmission.
→
Check the command specifications.
Response
There is a mistake in the program.
→
Check the receive portion of the program.
4-4 The instrument
cannot switch to
multiplexer chan-
nels or load the
multiplexer.
Front
measure-
ment ter-
minals
Measurement
leads are con-
nected
Measurement leads are connected to the
measurement terminals on the front of the
instrument.
→
Do not connect measurement leads to the
measurement terminals on the front of the
instrument when using the multiplexer.
Содержание RM3545
Страница 2: ......
Страница 4: ......
Страница 26: ...Operating Precautions 18...
Страница 42: ...1 5 Checking the Measurement Target 34...
Страница 54: ...2 6 Pre Operation Inspection 46...
Страница 70: ...3 5 Checking Measured Values 62...
Страница 226: ...10 6 Supplied Connector Assembly 218...
Страница 290: ...Chapter 13 Specifications 282...
Страница 312: ...14 4 Disposing of the Instrument 304...
Страница 349: ...Appendix 18 Outline Drawing A37 Appendix Appendix 18 Outline Drawing...
Страница 362: ...Index Index 4...
Страница 363: ......
Страница 364: ......