Keysight M8070A Programming Guide
31
Recommended Programming Techniques
2
This register is read by the CONDition? SCPI commands.
Transition Filters:
A positive transition filter allows an event to be reported
when a condition changes from false to true. A negative transition filter
allows an event to be reported when a condition changes from true to
false. Setting both positive and negative filters true allows an event to be
reported anytime the condition changes. Clearing both filters disables
event reporting.
This register is set and read by the NTRansition[?] and PTRansition[?] SCPI
commands.
Event Register
: An event register latches transition events from the
condition register as specified by the positive and negative transition
filters. Bits in the event register are latched and once set, they remain set
until cleared by either querying the register contents or sending the *CLS
command.
This register is read by the EVENt? SCPI commands.
Event Enable Register
: An enable register specifies the bits in the event
register that can generate a summary bit. Summary bits are, in turn, used
by the next higher register.
This register is set and read by the ENABle[?] SCPI commands.
The registers work together as follows:
1 The
Condition Register
corresponds to a condition on the hardware or
in the software. If the monitored condition is present, the
corresponding bit is high.
2 The
Transition Registers
monitor changes in the Condition Register. If
the Positive Transition Register is configured to watch for a condition,
when this condition occurs and the bit in the Condition Register goes
high, the Positive Transition Register passes this event to the
Event
Register
.
3 If this bit is enabled in the
Event Enable Register
, a summary bit is
generated in the next higher register. For the higher register, this is the
Condition Register and the event is handled the same way as
described here.