| Products > Test Equipment |
| A dream came true Today34401A Digital Multimeter, 6½ Digit DMM |
| << < (6/7) > >> |
| coromonadalix:
you have some software(s) who will give this old veteran life extension lolll |
| jerryk1234:
I just got one of these yesterday. Normal Ebay price. What a gorgeous meter! The sixth digit is very slightly brighter than the rest. I ordered a new display. Not so much because it's dim, rather to have a spare 10 years down the road. Out of the box, it agrees closely with my Fluke 87V. That's good enough for me; my repair and experimentation activities don't require extreme accuracy. |
| DavidAzulay5000:
Testing 4 wire kevin sens cable thet I built with my HP 34401A with power resistor 10 milliohm spot on |
| nukie:
The first stop after I fixed all my used 34401A is the cal lab. Even just simple capacitor refresh. You never know what the equipment went through and they could have done repairs to the devices. Soldering can change alot of things especially with these precision equipment. I have done some repairs to a few 34401A and I find even replacing the tantalum caps near the opamps pins can sometimes throw the calibration off the charts. If you are certain that your equipment is good and want extra assurance you can always rent another 34401A from a reputable test equipment hire. They usually have yearly calibration done on them. If you are lucky it could be done recently. Then you can compare your equipment with the rented dmm. |
| deepfryed:
I recently acquired one of these in good condition, but cost a fair bit more though - closer to A$650 :-X It does seem to agree with the precision resistor (0.005%, 0.2ppm/c) and reference (max6350 without trimming, 0.02%, 1ppm/c) I have (not calibrated), but as people have said can't be sure until it's calibrated. I'm not sure if it's purely coincidence or both the reference and resistor have the same error as the DMM :-DD The DMM cal menu says it was last calibrated in 1996, again don't know if people really update it. I'd like to double check the "standards" I have if possible but don't want to spend another $200 on calibration / adjustment! Is there a metrology group in Melbourne ? |
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