Keithley 2450 User Manual

Model 2450
Interactive SourceMeter® Instrument Reference Manual Section 8:
TSP command reference
2450-901-01 Rev. B/September 2013 8-161
Details
This command sets or clears the individual bits of the Status Request Enable Register.
The Status Request Enable Register is cleared when power is cycled or when a parameter value of 0 is sent with
this command.
The instrument returns a decimal value that corresponds to the binary-weighted sum of all bits set in the register.
Bit
Decimal
value
Constants When set, indicates the following
has occurred:
0
1
status.MSB
An enabled event in the
Measurement Event Register has
occurred.
1
2
Not used
Not used.
2
4
status.EAV
An error or status message is present
in the Error Queue.
3
8
status.QSB
An enabled event in the Questionable
Status Register has occurred.
4
16
status.MAV
A response message is present in the
Output Queue.
5
32
status.ESB
An enabled event in the Standard
Event Status Register has occurred.
6
64
Not used
Not used.
7
128
status.OSB
An enabled event in the Operation
Status Register has occurred.
Example 1
requestSRQEnableRegister = status.MSB +
status.OSB
status.request_enable = requestSRQEnableRegister
Uses constants to set the MSB and OSB
bits of the service request (SRQ) enable
register and clear all other bits.
Example 2
-- decimal 129 = binary 10000001
requestSRQEnableRegister = 129
status.request_enable = requestSRQEnableRegister
Uses a decimal value to set the MSB and
OSB bits and clear all other bits of the
service request (SRQ) enable register.
Example 3
status.request_enable = 0
Clear the register.
Also see
Status model (on page C-1)
Understanding bit settings (on page C-15)

Keithley 2450 Specifications

General

Brand	Keithley
Model	2450
Category	Test Equipment
Language	English