9 Programming the Instrument
9.4 Status Register System & STATus Subsystem
The settings of the Transition Filter registers determine whether or not a bit set in a
Condition register ripples through to the Event register, as follows:
–
If a bit is set in the Positive Transition register, then the corresponding bit in the
Event register is set when the condition bit goes from low to high (false to true,
off to on)
–
Conversely, if a bit is set in the Negative Transition register then the Event
register bit is set when the condition bit goes from high to low
–
If both Transition Filter registers are set true, then the event bit for that condition
is set whenever there is any change in the bit. If an event bit is set, the Event
Enable register determines whether or not it will OR into the summary bit that is
sent to the next level of register. If this bit is set, then the corresponding event bit
will be included
2775 Spectrum Analyzer Mode User's &Programmer's Reference