2000-903-01 Rev. C / October 2007
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Section Topics
1-15
Model 2000 Digital Multimeter Quick Start Guide
Section 1: Introduction
Figure 1-5
Questionable event status
Figure 1-6
Status byte and service request (SRQ)
(B13 - B9)
(B14)
(B8)
(B15)
OR
Questionable
Condition Register
Questionable Event
Enable Register
Warn = Command Warning
Cal = Calibration Summary
Temp = Temperature Summary
& = Logical AND
OR = Logical OR
&
&
&
0
(B13 - B9)
(B14)
(B8)
(B15)
0
Warn
Cal
Questionable Event
Register
(B13 - B9)
(B14)
(B8)
(B15)
To Questionable
Summary Bit (QSB)
of Status
Byte Register
(See Figure 6).
(B7 - B5)
(B7 - B5)
(B7 - B5)
Warn
Cal
0
Warn
Cal
(B4)
Temp
(B4)
Temp
(B3 - B0)
(B3 - B0)
(B3 - B0)
(B4)
Temp
&
Status Summary Messages
* STB?
Serial Poll
OSB
(B7)
RQS
(B6)
MSS
ESB
(B5)
MAV
(B4)
QSB
(B3)
EAV
(B2)
(B1)
(B0)
OR
* SRE
* SRE?
Status Byte
Register
Service
Request
Enable
Register
OSB = Operation Summary Bit
MSS = Master Summary Status
RQS = Request for Service
ESB = Event Summary Bit
MAV = Message Available
QSB = Questionable Summary Bit
EAV = Error Available
MSB = Measurement Summary Bit
& = Logical AND
OR = Logical OR
OSB
(B7)
(B6)
ESB
(B5)
MAV
(B4)
QSB
(B3)
EAV
(B2)
(B1)
(B0)
&
&
&
&
&
MSB
MSB
&
Service
Request
Generation
Read by Serial Poll
Read by *STB?