Keithley 2303 Service Manual

Calibration Reference B-3
Miscellaneous commands
Miscellaneous commands are those commands that perform such functions as saving cali-
bration constants, locking out calibration, and programming date parameters.
:CODE
(:CALibration:PROTected:CODE)
Purpose To unlock calibration so that you can perform the calibration procedure.
Format :cal:prot:code '<code>'
Parameter Up to an 8-character ASCII string, including letters and numbers.
Description The :CODE command sends the calibration code and enables calibration
when performing these procedures via remote. The correct code must be sent
to the unit before sending any other calibration command. The default remote
code is KI002303.
Notes • The :CODE command should be sent only once before performing cali-
bration. Do not send :CODE before each calibration step.
• To change the code, first send the present code, then send the new code.
• The code parameter must be enclosed in single quotes.
Example
:CAL:PROT:CODE 'KI002303' Send default code of KI002303.
:COUNT?
(:CALibration:PROTected:COUNt?)
Purpose To request the number of times the Model 2303 has been calibrated.
Format
:cal:prot:count?
Response Number of times calibrated.
Description The :COUNT? query may be used to determine the total number of times the
Model 2303 has been calibrated. The calibration count will also be displayed
during the front panel calibration procedure.
Example
:CAL:PROT:COUNT?
Request calibration count.
:DATE
(:CALibration:PROTected:DATE)
Purpose To program the calibration date.
Format
:cal:prot:date <yyyy>, <mm>, <dd>
深圳德标仪器 135-1095-0799

Keithley 2303 Specifications

General

Output Voltage Range	0 to +15 V
Load Regulation	<0.01% + 2mV
Line Regulation	<0.01% + 2mV
Programming Resolution Voltage	1 mV
Interface	USB
Storage Temperature Range	-40°C to 70°C
Voltage Programming Accuracy	0.05% + 5 mV
Voltage Readback Accuracy	0.05% + 5 mV
Operating Temperature Range	0°C to 40°C

Summary

Warranty and Safety

Warranty Information and Limitations

Details warranty coverage, exclusions, and terms for the instrument.

General Safety Precautions

Outlines safety procedures, user roles, hazard awareness, and safe practices for instrument operation.

Performance Verification

Test Setup and Requirements

Specifies requirements like environment, warm-up, and equipment before performing verification tests.

Accuracy Test Procedures

Details tests for output voltage, readback, current, and DVM input accuracy.

Calibration

Calibration Setup and Procedures

Covers calibration setup, front panel, remote procedures, and management.

Calibration Management and Error Handling

Describes managing codes, dates, detecting errors, and step completion.

Service and Maintenance

Disassembly and Reassembly

Details safe disassembly, handling, cleaning, and reassembly of the instrument.

Replaceable Parts Lists

Lists ordering, service, and parts details for digital, analog, display, and mechanical components.

Specifications and Control

Instrument Specifications

Details DC voltage/current output, DVM input, and general specifications.

Calibration Support and Programs

Details calibration commands, error detection, and BASIC calibration programs.

Instrument Control Methods

Explains front panel control and IEEE-488 bus commands for instrument operation.