Keithley 2015 Service Manual

Calibration Reference B-7
:LOCK?
(:CALibration:PROTected:LOCK?)
Purpose To read comprehensive calibration lock status.
Format :cal:prot:lock?
Response 0 Comprehensive calibration locked.
1 Comprehensive calibration unlocked.
Description The :LOCK? query requests status from the Model 2015 on calibration
locked/unlocked state. Calibration must be enabled sending the
:CODE com-
mand before calibration can be performed.
Example :CAL:PROT:LOCK? Request cal lock state.
:SAVE
(:CALibration:PROTected:SAVE)
Purpose To save calibration constants in EEROM after the calibration procedure.
Format :cal:prot:save
Parameter None
Description The :SAVE command stores internally calculated calibration constants
derived during both comprehensive and manufacturing calibration in
EEROM. (EEROM is non-volatile memory.) Calibration constants will be
retained indefinitely once saved. Generally,
:SAVE is sent after all other cal-
ibration steps (except for
:LOCK ).
NOTE Calibration will be only temporary unless the :SAVE command is sent to permanently
store calibration constants.
Example :CAL:PROT:SAVE Save calibration constants.

Keithley 2015 Specifications

General

Model	Keithley 2015
Category	Multimeter
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 300 kHz
Resistance Range	100 MΩ
DC Current Range	3 A
DC Current Accuracy	0.05%
AC Current Range	3 A
Display	5.5 digit
Connectivity	GPIB
Power Supply	100 V to 240 V AC, 50 Hz to 60 Hz