Hello,
I'm a retired controls engineer wanting to get back into electronics as a hobby. One problem is how can the home hobbiest calibrate his own equipment - without having a huge outlay in a metrolgy lab?
I thought about getting a good calibrated 6 1/2 digit DMM and making calibration resistors, but then I come back to different AC/DC sources that all need to be calibrated. You have the chicken and egg thing going on here. Are there any sources that never need re-calibrating that a hobbiest can afford or make.
I generally don't need 6 1/2 digits of accuracy. If the DMM instrument accuracy degraded slowley enough, I might be dead before it became a problem. I could use the DMM to set up the sources.
Any insights or wisdom would be greatly appreciated.
Also does anyone have an electrical schematic for a Toshiba SD-M1202 DVD-ROM drive. I am trying to make an autocollimator out of the read head.
Thank you for your help.
Best Regards,
Paul Hoffman
toolnut@hotmail.com
I'm a retired controls engineer wanting to get back into electronics as a hobby. One problem is how can the home hobbiest calibrate his own equipment - without having a huge outlay in a metrolgy lab?
I thought about getting a good calibrated 6 1/2 digit DMM and making calibration resistors, but then I come back to different AC/DC sources that all need to be calibrated. You have the chicken and egg thing going on here. Are there any sources that never need re-calibrating that a hobbiest can afford or make.
I generally don't need 6 1/2 digits of accuracy. If the DMM instrument accuracy degraded slowley enough, I might be dead before it became a problem. I could use the DMM to set up the sources.
Any insights or wisdom would be greatly appreciated.
Also does anyone have an electrical schematic for a Toshiba SD-M1202 DVD-ROM drive. I am trying to make an autocollimator out of the read head.
Thank you for your help.
Best Regards,
Paul Hoffman
toolnut@hotmail.com