| Products > Test Equipment |
| My poor mans SMU - The Agilent 66311B |
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| GAD:
--- Quote from: Muxr on February 21, 2016, 01:07:56 am ---Mine arrived a few days ago. No knob, but it had a sticker on it which said "working". I opened it up anyways. Looked good. Fired it up and it appears to be working. Can't really test it until my connector arrives in a few days. The VFD is good on it, not dim. The fan is loud, will need modding. In either case, very happy with the score, thanks TheSteve! --- End quote --- Yours looks positively new compared to mine. Anyone else receive one that looks as bad as mine? |
| TheSteve:
--- Quote from: gslick on February 21, 2016, 02:10:45 pm --- --- Quote from: TheSteve on February 21, 2016, 01:17:19 am --- btw, mine has ROM A.02.04 and the CAL date is 09/08/06 edit - played around a little. First I dumped the config/cal eeprom (93C86) so I had a backup. I then went into the board init menu but my firmware only allows 66311B, 66311D, 66309B and 66309D to be selected. I was able to exit without losing any cal data. So there is no other model I can select that is useful. --- End quote --- Do you have the means to read and dump the ROM A.02.04 firmware? I think it's in either a 28- or 32-pin PLCC package. I think I have either A.02.01 or A.02.02 in my 66309D supplies and there are some additional settings available in the A.02.04 firmware. (For example whether the dual supplies switch on/off together or independently). I don't know for sure the firmware is actually the same between the 66311B, 66311D, 66309B and 66309D models. How did you dump the config/cal eeprom (93C86)? --- End quote --- The firmware should be compatible with your model. Have you checked to see what part number the ROM is? If it's compatible with a programmer/socket I have I can dump it. I read the eeprom in circuit with a UPA-USB programmer using an SOIC clip. I don't think I'd program it in circuit though unless the processor was held in reset. |
| mtdoc:
--- Quote from: GAD on February 21, 2016, 06:22:43 pm --- Yours looks positively new compared to mine. Anyone else receive one that looks as bad as mine? --- End quote --- Mine is due to arrive on Tuesday. I'll let you know. |
| gslick:
--- Quote from: TheSteve on February 21, 2016, 06:49:49 pm ---The firmware should be compatible with your model. Have you checked to see what part number the ROM is? If it's compatible with a programmer/socket I have I can dump it. I read the eeprom in circuit with a UPA-USB programmer using an SOIC clip. I don't think I'd program it in circuit though unless the processor was held in reset. --- End quote --- The A2 board block diagram in the service manual shows it as a 4Mbit 256Kx16 part and it is an AMD part in a 44-pin PLCC package so that should make it an Am27C4096 on the 5064-0088 version of the A2 board in my 66309D. I haven't gone back to peel off the firmware version part number sticker on the OTP EPROM yet to verify that is the actual part number. -Glen |
| TheSteve:
--- Quote from: gslick on February 21, 2016, 09:33:00 pm --- --- Quote from: TheSteve on February 21, 2016, 06:49:49 pm ---The firmware should be compatible with your model. Have you checked to see what part number the ROM is? If it's compatible with a programmer/socket I have I can dump it. I read the eeprom in circuit with a UPA-USB programmer using an SOIC clip. I don't think I'd program it in circuit though unless the processor was held in reset. --- End quote --- The A2 board block diagram in the service manual shows it as a 4Mbit 256Kx16 part and it is an AMD part in a 44-pin PLCC package so that should make it an Am27C4096 on the 5064-0088 version of the A2 board in my 66309D. I haven't gone back to peel off the firmware version part number sticker on the OTP EPROM yet to verify that is the actual part number. -Glen --- End quote --- Well I'm happy to give it a go if you can get me an actual part #. |
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