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3-20
3.14
2251A Supported IEEE-488.2 Commands
Table 3.16 - IEEE-488.2 Command Codes
Function
Code
Identification Query
*IDN?
Reset Command
*RST
Internal Self-Test Query
*TST?
Clear Status Command
*CLS
Set Standard Event Status Enable Register Value
*ESE <NRf>
Standard Event Status Enable Register Query
*ESE?
Standard Event Status Register Query
*ESR?
Set Service Request Enable Register Value
*SRE<NRf>
Service Request Enable Register Query
*SRE?
Read Status Byte Query
*STB?
Operation Complete Command
*OPC
Operation Complete Query
*OPC?
Wait-to-Continue Command
*WAI
Trigger Command
*TRG
Option Identification
*OPT?
Device Dependent Status Byte
*STA?
(old 2251 Status Byte)
NOTE:
<NRf> is a numerical input in the range of 0 to 255. Complies with IEEE-
488.2 Section 7.7.2 for the accepted input formatting.
3.14.1
*IDN?
Respond with the 2251A’s Identify string. e.g.
RACAL INSTRUMENTS, 2251A, 0, 19.1
3.14.2
*RST
Preset the 2251A to a know state. See Table 3.5 - Instrument Preset
Conditions
3.14.3
*TST?
Command the 2251A to do an Internal Self Test. The response will be a 0
if the test passed and a 1 if the test failed.
3.14.4
*CLS
Clears the Event Registers summarized in the Status Byte and all queues
except the output.
3.14.5
*ESE <Nrf> Program the mask for the Standard Event Status Register. <NRf> is in the
range of 0 to 255. See Figure 3-1 for the bit value definition.
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Содержание 2251A
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