looking for two 7pin circular connectors

[GammaRadiation]

Hi to all.

Hope that somebody could help me.

I cannot identify two circular connectors.
AFAIK they should be push-pull type.
I tried to vectorialize one of them in order to find out the size of the pins and the internal layout's geometry, of course I need to buy the females of them.

thanks in advance :thumbsup:

1st


2nd (some 12.5mm external diameter, 9.5mm. internal)

 

[BradtheRad]

One of your connectors almost resembles an 8-pin mini-DIN, the serial port on early Macintosh computers. I say 'almost' because the pin spacing is off. It can only be a substitute if you were to do some precise drilling and soldering. Your connector also does not match the 7-pin version.

 

[GammaRadiation]

:bang:

thank you Brad... of course I cannot even think about the usage of a connector like that... :roll:

I've seen some Lemo connectors that seem to perfectly match, the fact is that I do not have any experience with those connectors.

 

[BradtheRad]

I have not tried this myself but it ought to be possible to homebrew a custom connector, by pouring hot-melt glue around tubular connectors previously pushed onto the prongs. Solder or crimp wires to the tubes. Then pour hot-melt glue into the cavity. Dust the cavity with flour beforehand.

To make improvised connectors, consider tiny metal tubes scavenged from an extending tv/radio antenna.

It's painstaking. There's a hazard that your assembly will want to stay embedded in the cavity. Or that a tight connector will yank a prong out of the device. However if it succeeds then you have a connector which fits precisely and can be plugged and unplugged.

 

[GammaRadiation]

I have not tried this myself but it ought to be possible to homebrew a custom connector, by pouring hot-melt glue around tubular connectors previously pushed onto the prongs. Solder or crimp wires to the tubes. Then pour hot-melt glue into the cavity. Dust the cavity with flour beforehand.

To make improvised connectors, consider tiny metal tubes scavenged from an extending tv/radio antenna.

It's painstaking. There's a hazard that your assembly will want to stay embedded in the cavity. Or that a tight connector will yank a prong out of the device. However if it succeeds then you have a connector which fits precisely and can be plugged and unplugged.

thank you Bad but... telling the truth I was looking for a definitive, stable solution.
If I cannot find the appropriate connector in the market very probably I will turn on the iron and replace the first one with a common RS232 DB9 connector, desoldering/pulling the original one out and leaving a piece of coaxial cable (some 4 inches) out of the instrument.