Keithley 2000 - Power-up

2000-903-01 Rev. C / October 2007 Return to 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?