Could the jtag issue have anything to do with this? Looks like a solder bridge in the video
As for the 'corner' multimeter. It has exactly the same style of jacks and writing on the range select switch as an RS - It was Japanese re-branded one, I think the company was something like "Ross" -- meter that was my 1st meter.
Could the jtag issue have anything to do with this? Looks like a solder bridge in the video
No it is not the culprit. And it is not a solder bridge either.
The connector on your VTVM is a Switchcraft 2501F Microphone Connector.-Go figure. It is some really old school mic connector. I love how it does not have a pin nor a socket. Its like an ancient version of the APC-7 Connector.
Quite a lot of low cost test equipment, especially from Japan, used that connector in the late 60s and early 70s.
The multimeter at 41:05 was widely available in the UK in the late 60s/early 70s with two or three different brand names on it. My father had one. It was a great value for money little meter, compact, robust and accurate.
Looks like the I-EXTRUDER dispenser isn't very happy !
The connector on your VTVM is a Switchcraft 2501F Microphone Connector.-Go figure. It is some really old school mic connector. I love how it does not have a pin nor a socket. Its like an ancient version of the APC-7 Connector.
Quite a lot of low cost test equipment, especially from Japan, used that connector in the late 60s and early 70s.
Why do they not use standard binding posts since binding posts have been here for a long time..maybe since 1905ish.
They also even use that mic connector in early RF gear. I wonder what its frequency capability is... Does anyone know?
The connector on your VTVM is a Switchcraft 2501F Microphone Connector.-Go figure.
Back in the 70s the band I was playing in then inherited a couple of electret microphones that had those Switchcraft connectors on. They made lousy microphone connectors and I have no reason to believe that they'd make better test equipment connectors. They were forever developing intermittent connections on the centre conductor because of flexing from poor strain relief.
The connector on your VTVM is a Switchcraft 2501F Microphone Connector.-Go figure.
Back in the 70s the band I was playing in then inherited a couple of electret microphones that had those Switchcraft connectors on. They made lousy microphone connectors and I have no reason to believe that they'd make better test equipment connectors. They were forever developing intermittent connections on the centre conductor because of flexing from poor strain relief.
I had an audio generator and an RF generator in the 70s with those connectors for the outputs. They look crude, but they never gave me any problems. The instruments were from a small Japanese maker which was popular in the UK in the 70s (sold by Henry's Radio, GW Smith, and others), but I've forgotten their name.
Microphones tend to have more cable movement with their use than test equipment - both in flexing cycles and intensity .... and also a lot less care.
It's like comparing the state of a cake after having been sent via the Post with one you carried yourself.
Microphones tend to have more cable movement with their use than test equipment - both in flexing cycles and intensity .... and also a lot less care.
It's like comparing the state of a cake after having been sent via the Post with one you carried yourself.
That simile only holds if the cake is advertised as "postal cake", remember these were sold as "microphone connectors".
Fair comment ... but then, from my observation, the dynamic loads those connectors have been subject to have increased somewhat over the years since they were first introduced as such.
They were created in the earlier developing period of electronics where equipment was generally treated with more care.
Fully shielded unbalanced coax vs banana rf exposed wires.
In case anyone needs it...