Dmitry Savinov_38080 Posted January 26 Posted January 26 Hi everybody, I am going to make a long run/stop cable for Aaton LTR 7, but I'm not sure which type of connector to use. And which type of button to use on the other end))) please advise me on this
Premium Member Tyler Purcell Posted January 26 Premium Member Posted January 26 It's a simple close and open switch, where the closed runs the camera. The connector is a standard Lemo 2 connector which has both male and female pins in each side including the camera jack.
Premium Member Gregg MacPherson Posted January 26 Premium Member Posted January 26 (edited) Tyler, do you know the specific name or number that will make it easier to search for that Lemo? (Edit: ...and where to get them easiest/ cheapest) It's actually quite a clever idea to just use a run switch on the extended handle, and leave the inching function to the switch on the camera. I don't know why I didn't think of that. The standard Aaton switch in the handle, a rocker that is run/off/single frame for inching...I was wondering how the pulse for inching worked. So I pulled mine out and photographed the components. I don't have much practical electronics. Can someone identify the components in the third photo. Dimitry, you should have put this in the Aaton sub forum...no.. Edited January 26 by Gregg MacPherson more words
Marc Roessler Posted January 26 Posted January 26 (edited) These are Zener diodes, 5.1 Volts, 0.5 Watts. You can find them as "ZPD5.1", for example. If I remember right, the two wires are connected directly for running the camera, and via the Zener diodes for test mode/inching. The Zener diodes limit the voltage across the two connector wires to around 5.4 to 6 Volts, which is how the camera can detect which of the two modes was selected (vs direct connection). It is two Zener diodes so the polarity of the connector wires does not matter, which makes the process of wring more fault tolerant (accidental swapping of the two wires). Edited January 26 by Marc Roessler 1
Dmitry Savinov_38080 Posted January 26 Author Posted January 26 3 hours ago, Tyler Purcell said: It's a simple close and open switch, where the closed runs the camera. The connector is a standard Lemo 2 connector which has both male and female pins in each side including the camera jack. I would be very appreciated if you could advise me where to buy it exactly
Premium Member Tyler Purcell Posted January 26 Premium Member Posted January 26 12 hours ago, Gregg MacPherson said: Tyler, do you know the specific name or number that will make it easier to search for that Lemo? (Edit: ...and where to get them easiest/ cheapest) In the Aaton service manual it's called "Lemo 2". I haven't bought them before.
Premium Member Tyler Purcell Posted January 26 Premium Member Posted January 26 (edited) 12 hours ago, Gregg MacPherson said: The standard Aaton switch in the handle, a rocker that is run/off/single frame for inching...I was wondering how the pulse for inching worked. So I pulled mine out and photographed the components. I don't have much practical electronics. Can someone identify the components in the third photo. Yea it's the diodes that allow the pulse. Edited January 26 by Tyler Purcell 1
Premium Member Gregg MacPherson Posted January 27 Premium Member Posted January 27 (edited) I found a couple of sellers offering these Lemo connectors on Ali Express. The URL is absurd long...just google "FFA ERA 00S 0S 1S 2S 3S connector 1 2 4 5 6 7 8 10 12-pin round push-pull FFA half-moon plug connector antenna RF cable" and you'll see the link. Very cheap. I don't know who manufactures them. Cheap enough to buy one and mess with it to see if its any good. I think its series OS on that page. They have drawings and a table to figure out which one you need. At the top of page "color" is the choice between socket/connector with nut/or with sheath. Package quantity is where you choose the series..choose OS I think. And then choose the number of pins...2 Thats the conclusion I came to, but do your own research. There is another seller who sells the socket and connector together, so that eliminates one possible foul up... Search google for that also "FFA ERA 00S 0S 1S 2S 1 2 3 4 5 6 7 8 10 Pin Push-pull Self-locking Precision Connector Half-moon Plug Socket Antenna RF Cable" Edit: I saw sockets on RS Components for about USD40 plus shipping, that about 3x the Ali Express price, and no shipping cost on those. But maybe the RS ones are better... Edited January 27 by Gregg MacPherson more words
Premium Member Gregg MacPherson Posted February 2 Premium Member Posted February 2 (edited) I ordered at socket and plug from Ali Express, the first link above. Cost altogether NZD32 (incl 15% NZ GST), that 's USD16 before tariffs, taxes. Free shipping. I try and see if they're any good and report. Ali Express are are really aggressive advertisers and vendors often misrepresent prices. I responded (different vendor) to a sudden price offer, about $1.50 per connecter and when I got to checkout the price was back to normal. Nice try...! Edited February 2 by Gregg MacPherson
Mark Dunn Posted February 2 Posted February 2 It's only worth buying generic stuff on AliExpress or where you can nail down the spec nice and tight. If you can do that it can be vanishingly cheap to the point you feel ashamed of yourself......or would until you realise that if you pay more for the stuff domestically, it's Chinese-made anyway. 1 1
Premium Member Gregg MacPherson Posted February 2 Premium Member Posted February 2 I've made , guessing 50 or more buys from AliXpress over the last year or two. Tooling for the machine shop at home, bicycle parts, camera accessory parts. A couple of items were underperformers, waste of money but cheap. One was a no show..a bike truing stand that arrived, transformed into a small washer in a plastic bag. Another, a bottle of silicone fluid with completely inaccurate cSt spec. Both quickly refunded, though the silicone fluid, the vendor made me send him a video proving it. Hilarious! Of course I did send one, which he disputed, but the refund of $3 was immediate. The vendors can occasionally be stroppy, but AliExpress keeps them in line I think. Refund process seems robust. The feedback system is flawed. I tried giving bad feedback once and the system would not let me. Every time I tried their system was down or under maintenance. Change to better feedback and the system was back on. My turn to be grossly off topic. Thank you Mark. 1
Premium Member Gregg MacPherson Posted Thursday at 08:39 PM Premium Member Posted Thursday at 08:39 PM The Lemo connectors arrived from China. To see the AliExpress page google "FFA ERA 00S 0S 1S 2S 3S connector 1 2 4 5 6 7 8 10 12-pin round push-pull FFA half-moon plug connector antenna RF cable" Its a 2 pin OS...see my previous notes on the oddities of the listing nomenclature.... Anyway, I don't have any alligator clips to try testing them while subject to some movement, vibration etc, but I can say that in look, fit, finish, function they seem identical to the old lemos that came with the camera. If I find otherwise when I get my alligator clips I will advise.
Premium Member Gregg MacPherson Posted Thursday at 08:41 PM Premium Member Posted Thursday at 08:41 PM On 1/26/2026 at 9:54 PM, Marc Roessler said: These are Zener diodes, 5.1 Volts, 0.5 Watts. You can find them as "ZPD5.1", for example. If I remember right, the two wires are connected directly for running the camera, and via the Zener diodes for test mode/inching. The Zener diodes limit the voltage across the two connector wires to around 5.4 to 6 Volts, which is how the camera can detect which of the two modes was selected (vs direct connection). It is two Zener diodes so the polarity of the connector wires does not matter, which makes the process of wring more fault tolerant (accidental swapping of the two wires). I gave you a thank you trophy, but I should have thanked you more personally. Gregg.
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