Keithley 2700 Service Manual

B-6 Calibration Reference
: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 2700 on calibration
locked/unlocked state. Calibration must be enabled sending the :CODE
command 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
calibration steps (except for :LOCK).
NOTE Calibration will be only temporary unless the :SAVE command is sent to perma-
nently store calibration constants.
Example :CAL:PROT:SAVE Save calibration constants.

Keithley 2700 Specifications

General

Type	Digital Multimeter
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 500 kHz
Temperature Range	-200°C to +1372°C
Display	Vacuum Fluorescent Display
Connectivity	IEEE-488, RS-232
Channels	10
Power Supply	100V to 240V AC, 45Hz to 66Hz
DC Current Range	10 µA to 3 A
AC Current Range	10 µA to 3 A
Temperature Measurement	Thermocouple, RTD