Keithley 2750 - Page 314

Model 2750 Multimeter/Switch System User’s Manual Status Structure 11-13
Figure 11-5
Operation event status
Measurement event register
The used bits of the Measurement Event Register (Figure 11-6) are described as follows:
• Bit B0, Reading Overflow (ROF) — Set bit indicates that the reading exceeds the
measurement range of the instrument.
• Bit B1, Low Limit 1 Event (LL1) — Set bit indicates that a reading has reached or
exceeded Low Limit 1.
• Bit B2, High Limit 1 Event (HL1) — Set bit indicates that a reading has reached
or exceeded High Limit 1.
• Bit B3, Low Limit 2 Event (LL2) — Set bit indicates that a reading has reached or
exceeded Low Limit 2.
• Bit B4, High Limit 2 Fail (HL2) — Set bit indicates that a reading has reached or
exceeded High Limit 2.
• Bit B5, Reading Available (RAV) — Set bit indicates that a reading was taken and
processed.
OR
Idle = Idle state
Filt = Filter Settled or Disabled
Trig = Triggering
Meas = Measuring
& = Logical AND
OR = Logical OR
(B15 - B11)
Idle
(B10) (B9)
Filt
(B8) (B7) (B6)
Trig
(B5)
Meas
(B4) (B3) (B2) (B1) (B0)
(B15 - B11)
Idle
(B10) (B9) (B8) (B7) (B6)
Trig
(B5)
Meas
(B4) (B3) (B2) (B1) (B0)
Operation
Event
Enable
Register
To
Operation
Summary
Bit (OSB) of
Status Byte
Register.
(B15 - B11)
Idle
(B10) (B9)
Filt
(B8) (B7) (B6)
Trig
(B5)
Meas
(B4) (B3) (B2) (B1) (B0)
Operation
Condition
Register
Filt
&
&
&
&
Operation
Event
Register
2750-900-01.book Page 13 Wednesday, August 3, 2011 7:56 AM