Keithley 6487 Reference Manual page 179

Model 6487 Reference Manual
Figure 10-7
Questionable event status
To QSB bit
of Status Byte
Register
Condition registers
As Figure 10-1
condition register. A condition register is a real-time, read-only register that constantly
updates to reflect the present operating conditions of the instrument. For example, while
the Model 6487 is in the idle state, bit B10 (Idle) of the operation condition register will be
set. When the instrument is taken out of idle, bit B10 clears.
The commands to read the condition registers are listed in
ing registers, see
Table 10-4
Common and SCPI commands — condition registers
STATus
:OPERation:CONDition?
:MEASurement:CONDition?
:QUEStionable:CONDition?
:CONDition?
(B15)
[:EVENt]?
(B15)
OR
:ENABle <NRf>
(B15)
:ENABle?
Decimal
Weights
Warn = Command Warning
Cal = Calibration Summary
shows, each status register set (except the standard event register set) has a
"Reading registers," page
Command
Cal
Warn
(B7)
(B14) (B13-B8)
Warn Cal
(B14) (B13-B8) (B7)
&
&
Warn Cal
(B14) (B13-B8) (B7)
16384 128
14 7
(2 ) (2 )
& = Logical AND
OR = Logical OR
10-6.
STATus subsystem:
Read operation condition register.
Read measurement condition register.
Read questionable condition register.
Status Structure
Questionable
Condition Register
(B6-B0)
Questionable
Event Register
(B6-B0)
Questionable Event
Enable Register
(B6-B0)
Table 10-4. For details on read-
Description
10-15