Appendix B 231
Information for Replacing 4278A with 4288A
Functional Comparison and GPIB Command Correspondence
B. Information for Replacing
4278A with 4288A
The following table shows the relationship between each bit of the status byte register of
the 4278A and the corresponding bit of the 4288A’s register.
Differences in usage of GPIB commands
GPIB command correspondence
4278A
(Status byte register)
4288A
Bit
number
Status information Register name
Bit
number
0 End of measurement Operation status register 4
1 End of analog measurement Operation status register 3
2 Trigger ignored Standard event status register
3
*1
3End status
•
Εnd of compensation data measurement Operation status register 7
•
End of self-test Operation status register 12
4 Reserved ————— —
5 Occurrence of error Standard event status register 2 to 5
6 Service request Status byte register 6
7 Reserved ————— —
*1.This bit shows the occurrence of device dependent errors. “Trigger ignored” is one of
the device dependent errors.
4278A 4288A
Usage of the
*SRE command
No space is required between the command
and parameters.
For example, to mask bit 0, use the
command as “*SRE1”.
A space is required between the command
and parameters.
For example, to mask bit 0, use the
command as “*SRE 1”.
Table B-17 Correspondence of status register related commands
Setup
GPIB command
4278A 4288A
Clear *CLS *CLS
Status byte register
Mask (setting the service
request enable register)
*SRE *SRE
Reading out the register *STB? *STB?
Standard event status register
Setting the enable register
N/A
*ESR?
Reading out the register *ESE
Operation status register
Setting the enable register :STAT:OPER:ENAB
Reading out the register :STAT:OPER?
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