Keithley 2000 User Manual

READ? command
:READ?
Description Typically, this command is used with the instrument in the “one-shot” mea-
surement mode to trigger and acquire a specified number of readings. The
:SAMPle:COUNt command is used to specify the number of readings (see
Trigger Subsystem). Note that the readings are stored in the buffer.
When this command is sent, the following commands execute in the order
that they are presented:
:ABORt
:INITiate
:FETCh?
When :ABORt is executed, if continuous initiation is disabled, the instru-
ment goes into the idle state. If continuous initiation is enabled, the operation
re-starts at the beginning of the Trigger Model.
If the instrument is in the idle state, :INITiate takes the instrument out of the
idle state. If continuous initiation is enabled, (:INITiate:CONTinuous ON),
then the :INITiate command generates an error and ignores the command.
See the :FETCh? command for more details. Note that an “Init ignored” er-
ror will not cancel the execution of the :FETCh? command.
NOTE You cannot use the :READ? command if sample count >1 (see
Trigger Subsystem) and there are readings stored in the buffer (er-
ror -225, out of memory). Either set sample count to one or clear
the buffer.
See Appendix C for an example program using the READ? com-
mand.
SCPI Command Reference 5-5

Keithley 2000 Specifications

General

Digits	6.5
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Resistance Range	100 Ω to 100 MΩ
Connectivity	IEEE-488 (GPIB)
Display Type	VFD