Keithley 2303, Service Manual, Page: 85 / 104

B-4 Calibration Reference
Parameters
<yyyy> = 1998 to 2097
<mm> = 1 to 12
<dd> = 1 to 31
Query
:cal:prot:date?
Response
<yyyy> , <mm> , <dd>
Description
The :DATE command allows you to store the calibration date in instrument
EEROM for future reference. You can read back the date from the instrument
by using the :DATE? query. The calibration date will also be displayed dur-
ing the front panel calibration procedure.
Note
The year, month, and day parameters must be delimited by commas.
Example
:CAL:PROT:DATE 1998,11,20
Send cal date (11/20/98).
:INIT
(:CALibration:PROTected:INIT)
Purpose
To initiate calibration.
Format
:cal:prot:init
Description
The :INIT command initiates the calibration process and must be sent before
all other commands except :CODE.
Note
The :INIT command should be sent only once at the beginning of the calibra-
tion procedure. Do not send :INIT before each calibration step.
Example
:CAL:PROT:INIT
Initiate calibration.
:SAVE
(:CALibration:PROTected:SAVE)
Purpose
To save calibration constants in EEROM after the calibration procedure.
Format
:cal:prot:save
Description
The :SAVE command stores internally calculated calibration constants
derived during comprehensive in EEROM. EEROM is non-volatile memory,
and calibration constants will be retained indefinitely once saved. :SAVE is
sent after all other calibration steps.
Note
Calibration will be only temporary unless the :SAVE command is sent to per-
manently store calibration constants. Calibration data will not be saved if:
1. Calibration was not unlocked by sending the :CODE command
2. Invalid data exists (for example, cal step failed.)
3. An incomplete number cal steps were performed.
4. Calibration was performed out of sequence.
深圳德标仪器
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