All these chips are socketed so it is pretty trivial to remove them. When the chips are right aligned on the breadboard, the lower address pins and data pins will all line up correctly. Keithley Cover Off. I used an Arduino to retrieve the stored information. The two EPROM chips where the firmware is stored can be easily identified on the main circuit board marked B17 and B17 respectively. Keithley Top PCB. The picture below shows the 10V DC voltage reading using a voltage standard.
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The pinouts of these two chips are quite similar. The two EPROM chips where the firmware is stored can be easily identified on the main circuit board marked B17 and B17 respectively.
All these chips are socketed so it is pretty trivial to remove them. Reply to this comment.
For an arduino usb to gpib project check this: Both and can be read using the same keithleu setup. Keithley Bottom PCB. These three chips are parallel memory chips so it is pretty straight forward to dump the content.
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December 5, at 9: Even with this level of shielding, the manual still suggests placing the meter away from other instruments 169 interference sources. Keithley Top PCB. Home My Youtube Channel About. I bought a used Keithley bench multimeter a few weeks ago. Also, the calibration data is device specific so do not attempt to flash your calibration EEPROM with data obtained elsewhere.
Notify me when new comments are added. When the chips are right aligned on the breadboard, the lower address pins and data pins will all line up correctly.
Kerry D. Wong » Blog Archive » Keithley Firmware/Calibration Data Backup
Original theme by srinig. The seemingly excessive shielding is necessary for preventing environmental electromagnetic field interfering with the precision analog circuit. So I decided to backup the firmware along with the calibration data just in case. I am having some trouble getting the two to communicate with each other.
You can download the firmware along with the calibration data using the links at the end. The cover is grounded through contact with the metal clips on the lower half of the case.
System DMM 196
Since Keithley is considered obsolete by the manufacturer, it might be hard to get a hold of the firmware should the EPROM fail however. Keithley firmware version B17 Keithley calibration data.
Keithley Cover Off. December 5, at 5: The only exception is the Write Enable WE pin, which are located at different positions on each chip. Leave a Reply Click here to cancel reply. Of course, you can use pretty much any micro-controllers that you are familiar with as kwithley as TTL logic levels are supported.
Keithley 196 System Digital Multimeter
Mail will not be published required. December 4, at 7: December 3, at 8: Hello Kerry, Very interesting page! The pictures below show the shielding attached to the inner wall of the instrument cover which provides additional shielding. The picture below shows the Keithley with the top cover removed.
The picture below shows the 10V DC voltage reading using a voltage standard.