Agilent Technologies N1911A Programming Manual page 79

Bit 0
Bit 1
Bit 2
Bit 3
Figure 1-7 Generalized Status Register Model
When a status group is implemented in an instrument, it always contains
all of the component registers. However, there is not always a
corresponding command to read or write to every register.
Condition Register
The condition register continuously monitors the hardware and firmware
status of the power meter. There is no latching or buffering for this
register, it is updated in real time. Condition registers are read- only.
Transition Filter
The transition filter specifies which types of bit state changes in the
condition registers and set corresponding bits in the event register.
Transition filter bits may be set for positive transitions (PTR), negative
transitions (NTR), or both. Transition filters are read- write. They are
unaffected by *CLS or queries. After STATus:PRESet the NTR register is
set to 0 and all bits of the PTR are set to 1.
Event Register
The event register latches transition events from the condition register as
specified by the transition filter. Bits in the event register are latched and
on setting they remain set until cleared by a query or a *CLS. Also on
setting, an event bit is no longer affected by condition changes. It remains
set until the event register is cleared; either when you read the register or
when you send the *CLS (clear status) command. Event registers are
read- only.
N1911A/1912A P-Series Power Meters Programming Guide
Condition
Transition
Register
Filter
0
1
2
Power Meter Remote Operation
Event Enable
Register Register
1
Summary
Bit
51