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Series 2400
Keithley Instruments Version C33 Firmware Release Notes
28775 Aurora Road
Cleveland, Ohio 44139-1891
1-888-KEITHLEY
www.keithley.com
Contents
General Information .................................................................................................................................................... 2
Supported models ................................................................................................................................................... 2
Installation instructions ........................................................................................................................................... 2
Upgrade considerations for supported models ....................................................................................................... 2
Version C33 Release .................................................................................................................................................. 3
Overview ................................................................................................................................................................. 3
Critical fixes............................................................................................................................................................. 3
Enhancements ........................................................................................................................................................ 3
Version C32 Release .................................................................................................................................................. 4
Overview ................................................................................................................................................................. 4
Critical fixes............................................................................................................................................................. 4
Enhancements ........................................................................................................................................................ 4
Version C31 Release .................................................................................................................................................. 5
Overview ................................................................................................................................................................. 5
Critical fixes............................................................................................................................................................. 5
Enhancements ........................................................................................................................................................ 5
Non-critical fixes ..................................................................................................................................................... 5
Version C30 Release .................................................................................................................................................. 6
Overview ................................................................................................................................................................. 6
Critical fixes............................................................................................................................................................. 6
Enhancements ........................................................................................................................................................ 6
Non-critical fixes ..................................................................................................................................................... 6
Version C29 Release .................................................................................................................................................. 7
Overview ................................................................................................................................................................. 7
Version C28 Release .................................................................................................................................................. 8
Overview ................................................................................................................................................................. 8
Version C27 Release .................................................................................................................................................. 9
Overview ................................................................................................................................................................. 9
Critical fixes............................................................................................................................................................. 9
Enhancements ........................................................................................................................................................ 9
Non-critical fixes ................................................................................................................................................... 10
Version C26 Release ................................................................................................................................................ 11
Overview ............................................................................................................................................................... 11
Critical fixes........................................................................................................................................................... 11
Enhancements ...................................................................................................................................................... 11
Non-critical fixes ................................................................................................................................................... 12
2400-FRP-C33 / May 2015 1
General Information - Supported models Error! Reference source not found.Series 2400 Firmwa
General Information
Supported models
This firmware is used on the following Keithley Instruments product models:
2400, 2400-C
2410, 2410-C
2420, 2420-C
2425, 2425-C
2430, 2430-C
2440, 2440-C
Installation instructions
Download the following from the Keithley Support Website (http://www.keithley.com/support):
Keithley Flash Wizard program (if you don't already have this)
o Unzip the files in a folder of your choice and then run the "setup.exe" program.
o Follow the instructions to install the program.
The firmware revision image file you want to install on your Series 2400 instrument
Perform the following steps to install the firmware revision onto Series 2400 the instrument:
1. Run the Flash Wizard program.
2. Select the appropriate interface at the Communications Select screen and follow any subsequent
instructions.
3. Ultimately the program should auto-detect the 2400.
4. You will then be asked to specify the firmware file.
5. The upgrade proceeds from there.
It typically only takes a few minutes using the GPIB interface.
Contact Keithley (http://www.keithley.com/company) if you have any problems.
Upgrade considerations for supported models
The following table outlines the considerations that should be made when deciding whether or not to upgrade
your Series 2400 instrument firmware to version C33.
Consideration for upgrade From any `C' version
Recalibration Required No
Re-qualification Suggested No
Should you upgrade? Review1
1 Review the list of changes made in this version and all versions in between your current version and this version. Upgrade if
any of the fixes or enhancements are desired.
2 2400-FRP-C33 / May 2015
Series 2400 Firmware Release Notes Version C33 Release - Overview
Version C33 Release
Overview
Version C33 fixes the issue of powering up with a low line-voltage (90 volts in Japan) for models 2420, 2425,
2430, 2440. Upgrading to this version of firmware will add a 5-second delay to power-up for all models running it.
Critical fixes
PR55590 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
The instrument will power up, but the digital circuitry will not work properly. Therefore, there is voltage
on the output and no readings are accurate.
Resolution:
The issue has been corrected.
Enhancements
There were no enhancements included in this release.
2400-FRP-C33 / May 2015 3
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Version C32 Release
Overview
Version C32 fixes the false reporting of "over-temperature".
Critical fixes
PR42558 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
Instruments may report error code +112, "OVER-TEMPERATURE" when they are not overheating.
Resolution:
The issue has been corrected.
Enhancements
There were no enhancements included in this release.
4 2400-FRP-C33 / May 2015
Series 2400 Firmware Release Notes Version C31 Release - Overview
Version C31 Release
Overview
Version C31 addresses several issues as listed below.
Critical fixes
PR31544 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
Instrument may stop responding if output ON/OFF is pressed when in an infinite sweep with the
display turned off.
Resolution:
The issue has been corrected.
PR40971 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
Instrument may give error code +822, "Too small for sense range" when setting current compliance
with compliance range synchronization turned on.
Resolution:
The issue has been corrected.
Enhancements
There were no enhancements included in this release.
Non-critical fixes
PR30035 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
Instrument may occasionally display "Not a Num" for a reading if offset-compensated ohms is used
and leads are not connected to a load.
Resolution:
The issue has been corrected.
2400-FRP-C33 / May 2015 5
Version C30 Release - Overview Error! Reference source not found.Series 2400 Firmwa
Version C30 Release
Overview
Version C30 addresses several issues as listed below.
Critical fixes
PR28880 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
When the OVP is flickering on the display, the instrument locks up or times out on the GPIB.
OVP can be caused by electrically noisy environments.
Resolution:
The issue has been corrected.
PR24684 Models affected:
2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
When using the Offset Compensation Ohms math function, the instrument displays "Not a Num".
Resolution:
The issue has been corrected.
Enhancements
There were no enhancements included in this release.
Non-critical fixes
PR25266 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
The Autorange function does not work correctly in current mode.
Resolution:
The issue has been corrected.
6 2400-FRP-C33 / May 2015
Series 2400 Firmware Release Notes Version C29 Release - Overview
Version C29 Release
Overview
Version C29 was not released.
2400-FRP-C33 / May 2015 7
Version C28 Release - Overview Error! Reference source not found.Series 2400 Firmwa
Version C28 Release
Overview
Version C28 was only released for Model 2420 to implement corrections for internal manufacturing issues.
8 2400-FRP-C33 / May 2015
Series 2400 Firmware Release Notes Version C27 Release - Overview
Version C27 Release
Overview
Version C27 addresses several issues as listed below.
Critical fixes
PR22327 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
If using the *SRE register, the MAV bit is reported incorrectly in the RS-232 communication. This will
lead to the SRQ not being generated.
Resolution:
The issue has been corrected.
PR23912 Models affected:
2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
In the 488.1 mode, the unit can lock up the bus if using external trigger and addressed to talk. If the
trigger hasn't occurred, the unit will time out. The BUS will not respond again until the unit is power
cycled.
Resolution:
The issue has been corrected.
Enhancements
There were no enhancements included in this release.
2400-FRP-C33 / May 2015 9
- Non-critical fixes Error! Reference source not found.Series 2400 Firmwa
Non-critical fixes
PR23012 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
From front panel operation only: the Current source delay is limited to changes in the 100 microsecond
resolution, whereas the voltage source delay can be changed within 10 microsecond. Both delays
should be configurable to 10 microsecond resolution.
Resolution:
The issue has been corrected.
PR23886 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
Transients occur between steps in the custom sweep when the instrument switches configuration from
a voltage source to a current source.
Resolution:
The issue has been corrected.
10 2400-FRP-C33 / May 2015
Series 2400 Firmware Release Notes Version C26 Release - Overview
Version C26 Release
Overview
Version C26 addresses several issues as listed below.
Critical fixes
PR20014 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
While the Compliance Range Sync feature is enabled, incorrect current measurements are possible,
the value may be off by orders of magnitude.
For example, the displayed reading is 100.05 mA instead of the expected 100 uA.
This was introduced in version C24 when the Compliance Range Sync feature was introduced.
Resolution:
The issue has been corrected.
PR20130 Models affected:
2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
The Range Hold Delay feature causes incorrect output voltages when the voltage source range is
increased. For example, when increasing the instrument's output from 0 volts (200 mV range) to 7
volts (10 volt range), the output is at 0.2 volts instead of 7.
Resolution:
The issue has been corrected.
Enhancements
PR21121 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Enhancement:
Simplified front panel bi-polar sweep capability for Log and Stair sweeps. Version C26 changed the
configuration sweep menus to allow editing the sign of the values without having to use the sign key.
Custom sweep not affected by enhancement. Still requires the use of the sign key.
2400-FRP-C33 / May 2015 11
Version C26 Release - Non-critical fixes Error! Reference source not found.Series 2400 Firmwa
PR19965 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Enhancement:
Add ability to have the current measure range temporarily go to the compliance during a source
memory sweep. This is so any current transients due to cable capacitance can go away quickly at the
higher compliance range, but then be able to take a reading on the lower measure range. Otherwise,
the instrument requires a long delay before a reading or a higher measure range.
PR19966 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Enhancement:
Add ability to do source memory branching on both pass and fail.
PR21051 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Enhancement:
In keeping with the new nomenclature for the output enable ( previously referred to as the
INTERLOCK), the following commands were added.
:OUTPut[1]:ENABle[:STATe] ON|OFF
:OUTP1:ENABle:TRIPped
Non-critical fixes
PR22599 Models affected:
2400, 2400-C, 2410, 2410-C, 2420, 2420-C, 2425, 2425-C, 2430, 2430-C, 2440, 2440-C
Symptom:
Binary data transfer sometimes delivers more data than expected.
Resolution:
The issue has been corrected.
12 2400-FRP-C33 / May 2015