Agilent Technologies InfiniiVision 6000 Series Manual de servicio descargar pdf (Pagina 770)

770 Agilent InfiniiVision 6000 Series Oscilloscopes Programmer's Guide

9 Status Reporting

The next program prints 0xD1 and clears bit 6 (RQS) and bit 4 (MAV) of

the Status Byte Register. The difference in the output value between this

example and the previous one is the value of bit 6 (weight = 64). Bit 6 is

set when the first enabled summary bit is set and is cleared when the

Status Byte Register is read by the serial poll command.

Example The following example uses the resource session object's ReadSTB method

to read the contents of the oscilloscope's Status Byte Register.

varQueryResult = myScope.IO.ReadSTB

MsgBox "Status Byte Register, Serial Poll: 0x" + Hex(varQueryResult)

Use Serial Polling to Read Status Byte Register. Serial polling is the preferred method to

read the contents of the Status Byte Register because it resets bit 6 and allows the next

enabled event that occurs to generate a new SRQ interrupt.

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Agilent Technologies InfiniiVision 6000 Series Manual de servicio Pagina 770