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2700 not seeing 7703 module

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TheSteve
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Joined: February 4th, 2017, 11:41 pm
Country: Canada

2700 not seeing 7703 module

Post by TheSteve » February 4th, 2017, 11:50 pm

I have two modules for my 2700 - a 7703 and a 7705. The 7705 is recognized and works fine. The 2700 is not "seeing" the 7703. I checked the I2C communication from the module to the 2700 and can see the 2700 reading the eeprom from the 7703. I experimented a little and verified the eeprom images are checksum protected.
The 2700 has firmware B09 installed.

I have attached the eeprom images from both my 7703 and 7705 - can someone verify the 7703 image is corrupted and if so correct it for me or provide a good image for me to try.

thank you
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Keithley-7703-7705-module-eeprom.zip
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brian.d.smith
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Country: United States

Re: 2700 not seeing 7703 module

Post by brian.d.smith » February 8th, 2017, 5:33 am

For the 7703, can you open and close the relays from the front panel of the 2700?

TheSteve
Posts: 6
Joined: February 4th, 2017, 11:41 pm
Country: Canada

Re: 2700 not seeing 7703 module

Post by TheSteve » February 8th, 2017, 10:03 am

Thank-you for the reply.
I am not able to open or close the relays, the 2700 acts as though the 7703 is not plugged in at all.

My 7705 module does indicate as being detected at power on and I can open and close it's relays.

TheSteve
Posts: 6
Joined: February 4th, 2017, 11:41 pm
Country: Canada

Re: 2700 not seeing 7703 module

Post by TheSteve » February 12th, 2017, 10:56 pm

I determined there is a checksum error in the upper portion of the 7703 eeprom. The checksummed range is from 0x10 to 0x66. If I correct the checksum the card is recognized but doesn't work properly. I can't toggle any relays. Does anyone have an example of a 7703 card eeprom? I'd really like to use this card.

brian.d.smith
Keithley Applications
Keithley Applications
Posts: 402
Joined: June 10th, 2013, 6:00 am
Country: United States

Re: 2700 not seeing 7703 module

Post by brian.d.smith » February 13th, 2017, 6:14 am

TheSteve wrote:I determined there is a checksum error in the upper portion of the 7703 eeprom. The checksummed range is from 0x10 to 0x66. If I correct the checksum the card is recognized but doesn't work properly. I can't toggle any relays. Does anyone have an example of a 7703 card eeprom? I'd really like to use this card.
I will see if we can send the file to you. It may require a couple of days to track down exactly where to find a copy of the file.

TheSteve
Posts: 6
Joined: February 4th, 2017, 11:41 pm
Country: Canada

Re: 2700 not seeing 7703 module

Post by TheSteve » February 13th, 2017, 2:03 pm

That would be amazing, thank you.

Dale C
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Re: 2700 not seeing 7703 module

Post by Dale C » February 16th, 2017, 5:17 am

The best way is to have it sent in for service.

TheSteve
Posts: 6
Joined: February 4th, 2017, 11:41 pm
Country: Canada

Re: 2700 not seeing 7703 module

Post by TheSteve » February 16th, 2017, 5:37 pm

If sending it in for service was an option I would have already done so already, but it isn't in the budget. I am also very confident a byte or two changed in the eeprom will fix it.
I don't even need a full image, just bytes 0x10 through 0x68 to patch into my file. that way the relay count and serial number are maintained.

TheSteve
Posts: 6
Joined: February 4th, 2017, 11:41 pm
Country: Canada

Re: 2700 not seeing 7703 module

Post by TheSteve » March 18th, 2017, 8:57 pm

Guess I'm not getting the file info?

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