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Publication No. 980844 Rev. B 1261B-Linear User Manual VXI:BERR:ALARM:TIME? -- VXI Bus Error alarm Only the “TIME?” queries are shown above. The “DATE?” queries may be formed by substituting the keyword “DATE” for the keyword “TIME”. The time stamps cannot be set by a command; they can only be queried. The EMS automatically records them into nonvolatile memory whenever an out-of-tolerance condition is detected. IEEE-488.2 Common Commands The EMS supports all required IEEE-488.2 commands. In addition, the optional “*OPT?”, “*SAV”, and “*RCL” commands are all supported. The following paragraphs describe the IEEE488.2 commands supported by the 1261B EMS. *IDN? Query This query requests the instrument to identify itself. The EMS responds to this query with the following reply: Racal Instruments,1261B EMS,0,<firmware revision> This reply indicates the Astronics Test Systems brand (“Racal Instruments”), the (“1261B EMS”), the serial number (if not available, it is “0"), and the firmware revision. The firmware revision is the only field that may change in the future. The firmware revision is a numeric, floating point value. An example firmware revision is “2.1". *RST Command The *RST command resets the instrument to its power-on default state. These settings are shown in Table 4-1 of this manual. This command does NOT change the value of SCPI or IEEE-488.2 status registers, event registers, condition registers, or enable registers. *TST? Query The *TST? query initiates an instrument self-test and returns a reply. The reply is a integer numeric value. A value of “0" indicates that the self-test has passed. A non-zero value indicates that one of the commanded self-tests has failed. Consult the “Performing the Self-Test” Section of this chapter for a description of the self-test failures and error codes associated. Astronics Test Systems Using The Enhanced Monitoring System 4-35