8 General Programming
190 M8190A User’s Guide
The following commands access the questionable status group.
8.7.3.1 :STATus:QUEStionable[:EVENt]?
Reads the event register in the questionable status group. It’s a read-only register.
Once a bit is set, it remains set until cleared by this command or the *CLS
command. A query of the register returns a decimal value which corresponds to the
binary-weighted sum of all bits set in the register.
8.7.3.2 :STATus:QUEStionable:CONDition?
Reads the condition register in the questionable status group. It’s a read-only
register and bits are not cleared when you read the register. A query of the register
returns a decimal value which corresponds to the binary-weighted sum of all bits set
in the register.
8.7.3.3 :STATus:QUEStionable:ENABle[?]
Sets or queries the enable register in the questionable status group. The selected
bits are then reported to the Status Byte. A *CLS will not clear the enable register
but it does clear all bits in the event register. To enable bits in the enable register,
you must write a decimal value which corresponds to the binary-weighted sum of the
bits you wish to enable in the register.
8.7.3.4 :STATus:QUEStionable:NTRansition[?]
Sets or queries the negative-transition register in the questionable status group. A
negative transition filter allows an event to be reported when a condition changes
from true to false. Setting both positive/negative filters true allows an event to be
reported anytime the condition changes. Clearing both filters disable event reporting.
The contents of transition filters are unchanged by *CLS and *RST.
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