ILX Lightwave LDX-32420, Руководство пользователя

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C O M M A N D R E F E R E N C E
LDX-32420 Device-Dependent Command Reference
01_10 LDX-32420
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C H A P T E R
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The DELAY command causes the execution of commands to be delayed by a user-
defined time. This command is similar to the *WAI common command, except that
execution resumes after the specified number of milliseconds, instead of waiting for the
Operation-Complete flag to be set.
Parameters An <nrf value> that represents the delay time in milliseconds.
Notes The Operation-Complete flag is held false until the delay period elapses, but the *OPC?
query will not execute until the delay period has elapsed.
This command is useful for creating delays that don't require a lot of program code and
don't tie up the communication bus during execution.
The delay time is approximate, with an error of about ±10%.
Examples "DELAY 500" - action: Further commands and queries are not executed until about 0.5
seconds have elapsed from the time this command is executed.
Note: Care should be taken to set the GPIB time-out appropriately for use with the Delay
command.
Note: When using the USB interface, queries requested before the delay command will not
return the result of the query until after the delay.
The ERRors? query returns a list of command and device errors that have occurred
since the last query. These errors are notated by a number that corresponds to the type
of error that occurred. See Chapter 3 for more information regarding error handling.
Parameters None
Notes The response data will be a list of the current errors. The errors are represented by
numbers and are separated by commas. A response of 0 indicates that no errors were
reported. The response data is sent as character data. Up to 10 error codes are stored
between error queries.
Examples "ERR?" - response: 0, means no errors reported.
"ERRors?" - response: 201, means that the <PROGRAM DATA> (parameter) value out
of range error was reported since the last ERR? query.
DELAY <nrf value>
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ERRors?
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