Giga-tronics 8650A Series, Руководство по эксплуатации

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Series 8650A Universal Power Meters
3-36 Manual 31470, Rev. E, April 2001
3.2.21 SRQ and Status Monitoring
*CLS
*ESE
*ESR?
*OPC
*SRE
STATus:OPERation
STATus:PREset
*STB?
*CLS
Example : OUTPUT @Pwr_mtr;*CLS ! Clear SRQ and status byte registers
Description : *CLS is the clear status command defined by IEEE 488.2. This command clears all of the
status bytes to the value 0. After a service request interrupt is transmitted from the 8650A
to the controller, use the *STB command to read the status byte from the 8650A. Then
reset the SRQ and use *CLS clear status command to reset the numeric status indication
of the status byte/registers to 0 (all bits will be 0).
*CLS does not affect the enabled or disabled status of the status byte/register masks. For
example, if you have bit 8 of the operation register enabled before sending *CLS, it will
remain enabled afterward. *CLS also clears the output queue (takes 0.3 sec to complete
this function).
*ESE
Syntax : ESE space <event status register value, 0 to 255>
Example : OUTPUT @Pwr_mtr;*ESE 16 ! Enable bit 4 of event status register mask
Description : This command sets/clears the event status register enable mask.
*ESR?
Example : OUTPUT @Pwr_mtr;*ESR? ! Return event status register value
Description : This query returns the current status register value.
*OPC
Example : OUTPUT @Pwr_mtr;*OPC! *OPC allows one time SRQ enable
Description : *OPC determines when an operation is completed. This command is generally used to
monitor the completion of long measurement sequences. It sets the operation complete
bit in the event status register upon completion of operation.
*SRE
Syntax : *SRE space <event status register value, 128, 64, 32, 16, 8, 4, 2, 1>
Example : OUTPUT @Pwr_mtr;*SRE 32 ! Enable bit 5 of Status Byte register
Description : This command sets the mask of the Status Byte register.