Keithley 2303, User Manual

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Status Structure 7-13
Measurement event status
The used bits of the measurement event register (shown in Figure 7-6) are described as
follows:
• Bit B3, reading overflow (ROF) — Set bit indicates that voltage or current reading
exceeds the measurement range of the instrument.
• Bit B4, pulse trigger timeout (PTT) — Set bit indicates that a current pulse has
not been detected.
• Bit B5, reading available (RAV) — Set bit indicates that a reading was taken and
processed.
• Bit B9, buffer full (BF) — Set bit indicates that the specified number of readings
(average count) have been taken.
___
BF
___
RAV PTT ROF
___
(B15-B10) (B9) (B8-B6) (B5) (B4) (B3) (B2-B0)
___
BF
___
RAV PTT
ROF
___
(B15-B10) (B9) (B8-B6) (B5) (B4) (B3) (B2-B0)
___
512
___
16 8
___
(2
9
) (2
5
) (2
4
) (2
3
)
___
BF
___
RAV PTT ROF
___
(B15-B10)
(B9)
(B8-B6)
(B5)
(B4)
(B3)
(B2-B0)
OR
&
&
&
&
:CONDition?
[:EVENt]?
To MSB bit
of Status Byte
Register
:ENABle <NRf>
:ENABle?
Decimal Weights
Measurement Event
Enable Register
Measurement
Condition Register
Measurement
Event Register
PTT = Pulse Trigger Timeout
ROF = Reading Overflow
BF = Buffer Full
RAV = Reading Available & = Logical AND
OR = Logical OR
32
Figure 7-6
Measurement event status