Hi Jack,
No, he is actually exactly right. A DSO can lie it's azz off to you if you aren't careful. The better scopes are less likely to do this.
No, he is actually exactly right. A DSO can lie it's azz off to you if you aren't careful. The better scopes are less likely to do this.
Hi Dave,
Yup!
And I miss those days. I hope they go back to straight machine code in firmware instead of booting an OS, then booting the apps.
Yup!
And I miss those days. I hope they go back to straight machine code in firmware instead of booting an OS, then booting the apps.
I see today's price
I got mine new was never touched by any else it is like new.
I been thinking of buy a few Zener diodes but could not find if there if accuracy is better than 1%.
Dave
Hi Dave,
I'm talking about new in box, I unsealed them as the sale had a calibration attached to it. No one had touched these from the manufacturing line forward.
I'm talking about new in box, I unsealed them as the sale had a calibration attached to it. No one had touched these from the manufacturing line forward.
Yes
The Simpson 260 came with a card. I think still have the card some where.
All my equipment I got new or I built
Dave
The Simpson 260 came with a card. I think still have the card some where.
All my equipment I got new or I built
Dave
Hi Dave,
Yes, but Transcat would sell equipment with independent certification. Sometimes the factory cal card was a joke- showing "typical performance". So we certified those instruments in our lab depending on what level the customer wanted.
Yes, but Transcat would sell equipment with independent certification. Sometimes the factory cal card was a joke- showing "typical performance". So we certified those instruments in our lab depending on what level the customer wanted.
I was manufacturering doors in 2000.
I did notest after around late 1990's the quality had gone down on lot things. It also was made in Mexico. Some jobs I work on had to made in America so it was a Real pain.
Dave
I did notest after around late 1990's the quality had gone down on lot things. It also was made in Mexico. Some jobs I work on had to made in America so it was a Real pain.
Dave
To prevent accidental turning, calibrating potentiometers were fitted with lock nuts and the short shafts have a slot for flat screwdriver.
Regards.
If there a slot they will turn that slot.
If there a lock they find a way to unlock.
That just one problem buying use you calibrated back factory
Dave
If there a lock they find a way to unlock.
That just one problem buying use you calibrated back factory
Dave
No slots nor locking, just torque-resistant, high precision wiper pots. The calibration doesn't move too much, by the way, and is enough in practice.
T
We went to closed case (electronic) calibration for that reason. That and trimmer controls oxidize and then cal is out the window.
Calibration drifts as your parts drift in value. That is a fact of life. That is why there is a calibration interval with instruments. For a company that relies on the instrument, the cal cycle is shorter than it will probably drift and cause trouble, they can't afford to have instruments lie. My 34401A's have never been out of tolerance - but I check. Other instruments certainly have drifted out of tolerance.
You cannot look at the certification on an instrument and assume it is in tolerance, because if you look, time is a factor as well. You may have overload damage even though it still works and gives readings in the ballpark. Then, we have less expensive instruments that do not even meet their specs new in box.
Yes, some folks will twist and turn everything they can get to. Elevators not reaching the top floor, and there is no defence against that. They will always lie and tell you they haven't touched anything.
Calibration drifts as your parts drift in value. That is a fact of life. That is why there is a calibration interval with instruments. For a company that relies on the instrument, the cal cycle is shorter than it will probably drift and cause trouble, they can't afford to have instruments lie. My 34401A's have never been out of tolerance - but I check. Other instruments certainly have drifted out of tolerance.
You cannot look at the certification on an instrument and assume it is in tolerance, because if you look, time is a factor as well. You may have overload damage even though it still works and gives readings in the ballpark. Then, we have less expensive instruments that do not even meet their specs new in box.
Yes, some folks will twist and turn everything they can get to. Elevators not reaching the top floor, and there is no defence against that. They will always lie and tell you they haven't touched anything.
Most do not know what doing when screwdriver comes out or if need.
I work in different industry where watch machinist adjust there mac's every few months. They could only check the limits. They could not check the middle. Note Mic's will where in middle not the ends.
I do my best to test my electronics but just hobby.
If was doing industrial work I would have cert by a testing company.
Dave