Typical Status Register Bit Changes - HP E4418B Programming Manual

Enable Register
The enable register specifies the bits in the event register that can
generate a summary bit. The instrument logically ANDs corresponding
bits in the event and enable registers and ORs all the resulting bits to
obtain a summary bit. Enable registers are read-write. Querying an
enable register does not affect it.
An Example Sequence
Figure 1-11 illustrates the response of a single bit position in a typical
status group for various settings. The changing state of the condition in
question is shown at the bottom of the figure. A small binary table shows
the state of the chosen bit in each status register at the selected times T1
to T5.
Figure 1-11: Typical Status Register Bit Changes
0
0 0 0 0
Case A
0
0 1 1
Case B
1 0 1 0 0 0
Case C
1 1 0 0 0 0
Case D
1
Condition
0
*
HP E4418B/E4419B Programming Guide
0 0
0 1
0 0 0 0
1
1 1 1
1 1 0
T1 T2
*
marks when event register is read
*
Power Meter Remote Operation
Status Reporting
0 0
1 0 0 0
1 0
0 0 1 1
1 0 0 0 0 0
0
1 0 0 1 0
T3
T4
0 0 0
0 0 0
0 0 0
0 0 0
T5
*
1-73