Event Status And Event Status Enable Registers - Fluke 8808A User Manual

8808A
Users Manual

Event Status and Event Status Enable Registers

The ESR assigns specified events to specific bits. (See Figure 4-3 and Table 4-6.) When a
bit in the ESR is set to 1, the event that corresponds to that bit occurred after the register
was last read or cleared. For example, if bit 3 (DDE) is set to 1, a device-dependent error
has occurred.
The ESE is a mask register that allows the host to enable or disable (mask) each bit in the
ESR. When a bit in the ESE is set to 1, the corresponding bit in the ESR is enabled.
4-12
6 2
7 5 4 3
&
&
&
&
&
&
7 6 5 4 3 2
RQS
Service
7
Request
Generation
MSS
&
7
Figure 4-2. Overview of Status Data Structures
Standard
1 0
Event Status Register
Read Using *ESR?
&
&
Standard
Event Status Enable
1 0
Register
Read Using *ESE?
Write to Using *ESE
6 3 2 1
ESB MAV
&
&
&
&
&
5 4 3 2 1
Queue
Not-Empty
Output Queue
Read by Serial Poll
Status Byte Register
0
Read Using *STB?
&
Service Request
0
Enable Register
Read Using *SRE?
Write to Using *SRE
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