Vitrek Xitron 2553, Руководство по управлению

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Reading Status & Settings from the 2553/ 2553E 39
Reading Status & Settings from the 2553/ 2553E
Successful reception of these commands cause the 2553/ 2553E to place data into the
Interrogative Bank transmit buffer, and a subsequent read of the 2553/ 2553E will return
the requested data. In this document these are called Interrogative Commands.
If multiple Interrogative Commands are sent in a single set of commands, then the buffer
will contain the response to each of these, in the order requested, separated by the comma
character.
If several Interrogative Commands are issued in separate sets of commands, without the
intervening results being read, then only the last result will be read from the 2553/ 2553E.
After reading the Interrogative Bank transmit buffer, its’ contents are automatically
destroyed and the 2553/ 2553E reverts to allowing the previously requested Transmit
Buffer Bank to be read.
Interrogative commands return the value of the interrogated status or setting which
prevailed prior to the decode of the set of commands being executed, thus do not report
any changes made due to other commands in the same set.
Interrogative Command Syntax
Interrogating Calibration Status
*CAL?
The 2553/ 2553E places an ASCII string describing the status of the last external
calibration into the Interrogative Bank following the recommendations of the IEEE488.2
standard for this command. The character 1 (decimal 49) is placed if the 2553/ 2553E
has not been successfully calibrated, or the previously stored calibration has become
corrupted, otherwise the character 0 (decimal 48) is placed.