Old Navy we used them to troubleshoot circuit boards. In school it was groups of 4 that the whole group passed or failed the test if we didnt find the right problem
4 to 20 ma driver nice. Plus hertz. Great for checking a small genset under loadWell, nothing beats the Huntron Tracker. My old Fluke 867 had both oscope capabilities (single channel 20 MHz bandwidth) and component tester capabilities like a poor man's Huntron, but I could not find a good photo, but I found this PDF (attached) which explains a little.
I sure needed one of those 25 Years ago!Well, nothing beats the Huntron Tracker. My old Fluke 867 had both oscope capabilities (single channel 20 MHz bandwidth) and component tester capabilities like a poor man's Huntron, but I could not find a good photo, but I found this PDF (attached) which explains a little.
I had to youtube that one.
Instrumentation calibrator. Unfortunstely the new one is out. Im not used to the new one.
Wow, I was in industrial maintenance for years and never saw one. We did have pressure calibrators called "Drucks."
Oh I've had some scares. LOL!I have one of the first 867s made. Bought it around 1994 I think. It was cutting edge SOTA then. Still a really nice scopemeter combo with several other tools built in.
Damn thing is super accurate too, especially in DCV. I actually have a print out of the accuracy of each test because I used to have to have it calibrated/tested once a year by a certification agency in order to be able to use it at work (I was working in a research lab at the time).
Actually took it with me to Atlanta in '96 to troubleshoot a problem with our cards being used in the '96 Olympics. We found the problem with the built-in frequency counter, then had Lucent come in with a Stratum II or III cesium clock from New Jersey to nail down the solution.
The internal oscillator clock on our master card here was drifting out of the capture range of the clock at the far end thus causing it to chase after the first clock trying to lock to it and neither end was ever able to lock and sync up to the T1 rate.
Almost delayed broadcast of the Olympics. That would've been real bad. You never saw anything so scary as walking into a big room full of trailers, each trailer packed full with DS1 channel banks, with each channel bank filled with 64 of our cards, all of them flashing with red error lights.
Thats deeper than my DCS knowledge lol.I have one of the first 867s made. Bought it around 1994 I think. It was cutting edge SOTA then. Still a really nice scopemeter combo with several other tools built in.
Damn thing is super accurate too, especially in DCV. I actually have a print out of the accuracy of each test because I used to have to have it calibrated/tested once a year by a certification agency in order to be able to use it at work (I was working in a research lab at the time).
Actually took it with me to Atlanta in '96 to troubleshoot a problem with our cards being used in the '96 Olympics. We found the problem with the built-in frequency counter, then had Lucent come in with a Stratum II or III cesium clock from New Jersey to nail down the solution.
The internal oscillator clock on our master card here was drifting out of the capture range of the clock at the far end thus causing it to chase after the first clock trying to lock to it and neither end was ever able to lock and sync up to the T1 rate.
Almost delayed broadcast of the Olympics. That would've been real bad. You never saw anything so scary as walking into a big room full of trailers, each trailer packed full with DS1 channel banks, with each channel bank filled with 64 of our cards, all of them flashing with red error lights.
So was this some early kind of multiplexing?I have one of the first 867s made. Bought it around 1994 I think. It was cutting edge SOTA then. Still a really nice scopemeter combo with several other tools built in.
Damn thing is super accurate too, especially in DCV. I actually have a print out of the accuracy of each test because I used to have to have it calibrated/tested once a year by a certification agency in order to be able to use it at work (I was working in a research lab at the time).
Actually took it with me to Atlanta in '96 to troubleshoot a problem with our cards being used in the '96 Olympics. We found the problem with the built-in frequency counter, then had Lucent come in with a Stratum II or III cesium clock from New Jersey to nail down the solution.
The internal oscillator clock on our master card here was drifting out of the capture range of the clock at the far end thus causing it to chase after the first clock trying to lock to it and neither end was ever able to lock and sync up to the T1 rate.
Almost delayed broadcast of the Olympics. That would've been real bad. You never saw anything so scary as walking into a big room full of trailers, each trailer packed full with DS1 channel banks, with each channel bank filled with 64 of our cards, all of them flashing with red error lights.
In the Marines, I believe it was the MRC-138 (Mark one thirty eight) that could be set up for MUX. Certainly ancient by today's standards. I was never hands-on with those after school, and I was only the 2nd echelon anyway.
Do not kid yourself, Chuz, I believe the original application for multiplexing was for military applications, for covert security, it was used as a means of scrambling the signal so that even intercepted, the enemy could not figure out what you were saying. Good stuff. Also, if I recall correctly, it might have even been a lady who came up with the idea. Revolutionized telecommunications in many ways.
Now Motorola, there was a company that was right at the heart of the leading edge for the very best in gear back in the day.
It's really very simple. The idea is to break up a communication signal into time elements so that you can either interleave many channels into one much like how a zipper locks together or, break up one signal into many time elements that must be reassembled in the right time and order to make sense of it.
I built mine tool bench for woodworking, along with a large fabrication bench/outfeed table for my table saw. Also smaller benches power tools.
