Keithley 2450 User Manual

Model 2450
Interactive SourceMeter® Instrument Reference Manual Appendix C:
Status model
2450-901-01 Rev. B/September 2013 C-7
Questionable Event Register
You can program the bits in the Questionable Event register to be cleared or set when an event
occurs.
When an enabled Questionable Event Register bit is set (because the enabled event occurs), the
corresponding bit B0 (MSB) and Bit B3 (QSB) of the Status Byte Register is set. The corresponding
Questionable Event Register Condition register reflects the present status of the instrument, so it will
be set while the event occurs.
When reading a register, a numeric value is returned. The binary equivalent of this value indicates
which bits in the register are set. For details, see Understanding bit settings (on page C-15
).
You can use the following commands to read and set bits contained in the Questionable Event
Register.
Description SCPI command TSP command
Read the Questionable
Condition Register
:STATus:QUEStionable:CONDition?
(on page 6-92)
status.questionable.condition (on
page 8-158)
Set or read the contents of the
Questionable Event Enable
Register
:STATus:QUEStionable:ENABle (on
page 6-93)
status.questionable.enable (on
page 8-158)
Read the Questionable Event
Register
:STATus:QUEStionable[:EVENt]? (on
page 6-93)
status.questionable.event (on page
8-159)
Request the mapped set event
and mapped clear event status
for a bit in the Questionable
Event Register
:STATus:QUEStionable:MAP (on
page 6-94)
status.questionable.getmap()
(on
page 8-159)
Map events to bits in the
Questionable Event Register
:STATus:QUEStionable:MAP (on
page 6-94)
status.questionable.setmap() (on
page 8-160)
The instrument returns a decimal value that corresponds to the binary-weighted sum of all bits set in the register.
You can use a copy of the following table to record settings for your instrument.
Bit
Decimal
value
Set Event Clear Event When set, indicates the following
has occurred:
0
1
1
2
2
4
3
8
4
16
5
32
6
64
7
128
8
256
9
512
10
1024
11
2048
12
4096
13
8192
14
16 384

Keithley 2450 Specifications

General

Brand	Keithley
Model	2450
Category	Test Equipment
Language	English