Keithley 6221 User Manual

Model 6220/6221 Reference Manual Status Structure 11-21
Return to Section 11 topics
enable or disable. The messages are specified by their codes. The following
examples show various forms for using the <list> parameter.
<list> = (-110) Single message
= (-110:-222) Range of messages (-110 through -222)
= (-110:-222, -220) Range entry and single entry (separated by a
comma)
When you enable messages, messages not specified in the list are disabled.
When you disable messages, each listed message is removed from the enabled
list.
To prevent all messages from entering the error queue, send the enable command
along with the null list parameter as follows: STATus:QUEue:ENABle ().
Programming example — read error queue
The following command reads the error queue:
Table 11-7
SCPI commands — error queue
Command Description Default
STATus
:QUEue
[:NEXT]?
:ENABle <list>
:ENABle?
:DISable <list>
:DISable?
:CLEar
SYSTem
:ERRor?
:CLEar
STATus subsystem:
Read error queue:
Read and clear oldest error/status (code and message).
Specify error and status messages for error queue.
Read the enabled messages.
Specify messages not to be placed in queue.
Read the disabled messages.
Clear messages from error queue.
SYSTem subsystem:
Read and clear latest error/status (code and message).
Clear messages from error queue.
Note 1
Note 2
Note 2
Note 1
Notes:
1. Power-up and *CLS empties the error queue. STATus:PRESet has no effect.
2. Power-up enables error messages and disables status messages. *CLS and STATus:PRESet have no
effect.
STAT:QUE ‘ Reads Error Queue.
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Keithley 6221 Specifications

General

Interface	GPIB, RS-232
Communication Interface	GPIB, RS-232
Current Sourcing Accuracy	±(0.03% of output + 20 pA)
Current Sinking Accuracy	±(0.03% of output + 20 pA)
Output Resolution	100 fA
Output Accuracy	±(0.03% of output + 20 pA)
Power Requirements	100 V to 240 V AC, 50/60 Hz