jlempen Posted April 10, 2016 Report Share Posted April 10, 2016 In order to find out which lead goes to which pin, I had to open up the LEMO connector. Closer inspection of the connector shows that the wiring diagram in the Arri Alexa Mini User Manual is actually not accurate. Unlike the standard LEMO 0B Timecode connector, which has the ground pin on top, the LEMO 00 Audio connector has the ground pin above on the left side seen from the soldering side and the pins are probably numbered counter-clockwise from 1 to 5 as on the LEMO 0B TC connector. In the Arri-made cable with flying leads, the white wires seem to be signal high and the blue wires signal low. You'll have to test continuity from the pins to the wires to know which one's which. I'll test my cable tomorrow on the set, I hope it'll work, otherwise I'm screwed. Here's a little diagram showing the actual pinout. Quote Link to comment Share on other sites More sharing options...
chrismedr Posted April 16, 2016 Report Share Posted April 16, 2016 i'm a bit confused by the two diagrams - why is the "guide notch" once next to a pin (1) and once between two pins (1 and 5)? it looks to me like the wouldn't fit together at all but i'm probably reading things wrong. Quote Link to comment Share on other sites More sharing options...
astro Posted April 16, 2016 Report Share Posted April 16, 2016 Quote Link to comment Share on other sites More sharing options...
jlempen Posted April 18, 2016 Report Share Posted April 18, 2016 On 16/04/2016 at 5:21 PM, chrismedr said: i'm a bit confused by the two diagrams - why is the "guide notch" once next to a pin (1) and once between two pins (1 and 5)? it looks to me like the wouldn't fit together at all but i'm probably reading things wrong. Hey Chris, The diagram on top is the one you'll find in Arri's Alexa Mini manual, and it's wrong. The diagram below is the actual orientation of the pins in the LEMO 00 plug, with the guide notch between pins 1 and 5. Astro's diagram is correct, that's the absolute correct way to wire the plug. Thanks Astro! Quote Link to comment Share on other sites More sharing options...
Philip Perkins Posted April 18, 2016 Report Share Posted April 18, 2016 This is strange...I've done some Alexa Mini jobs, and while I had to use the "new" Lemo audio-in cable I had made, The TC cable I used (successfully) was the same as I use on regular Alexas... Was I hallucinating? Quote Link to comment Share on other sites More sharing options...
al mcguire Posted April 18, 2016 Report Share Posted April 18, 2016 No, Philip, The Arri Mini uses the same 5 pin lemo cables we bought for the 4S-TC and for the Alexa. Quote Link to comment Share on other sites More sharing options...
GAGaudio Posted May 26, 2016 Report Share Posted May 26, 2016 On 4/7/2016 at 6:16 AM, jlempen said: Hey all! Just FYI, here's what the mini LEMO 00 series 5-pin I just got from Arri looks like: How much did that cost you? Quote Link to comment Share on other sites More sharing options...
jlempen Posted May 26, 2016 Report Share Posted May 26, 2016 Around 60 Euros I think. Quote Link to comment Share on other sites More sharing options...
Christopher Mills Posted May 27, 2016 Report Share Posted May 27, 2016 used an arri mini all week. it was 2 frames off with a Ambient lockit connected all day long. But a stable 2 frames offset. recorder was SD664 Quote Link to comment Share on other sites More sharing options...
sonyslave Posted June 4, 2016 Report Share Posted June 4, 2016 Alexa Mini @ 25fps for Euro doco shoot. Not sure what firmware was on cam. Mini needed 2 volts to see TC Note the "LTC IN" is displayed despite "LTC in signal missing" also being displayed. Quote Link to comment Share on other sites More sharing options...
jlempen Posted June 6, 2016 Report Share Posted June 6, 2016 I just finished a 37 days shoot with Alexa Mini, a Tentacle Sync box on both cameras and a Tentacle box on my recorder as well, the output volume of the Tentacles cranked all the way up. 24 fps. The Minis' TC options set to EXT LTC - REGEN - FREE RUN (there's no PRESET option in the Alexa Mini). Sync stayed within half a frame all day long every day without rejamming the Tentacles on lunch break for the whole shoot. The AC told me we had the latest firmware on the Alexas. BTW, all audio channels were disabled on the cameras, as we recorded a scratch track on a Video Devices PIX and an Odyssey 7. My Mini Lemo 5-pin Audio cable worked great until we decided to disable the onboard audio as we didn't have any use for it. Quote Link to comment Share on other sites More sharing options...
itaro Posted August 30, 2016 Report Share Posted August 30, 2016 Good evening, Anyone used the alexa mini with lockit ACL 204 to tc with Sound Devices 744T? I have a shooting tomorrow and haven't used the lockit before, what tc settings should I use on my sound devices /lockit/alexa for an easy and hustle free setup. Also, should I leave lockit conected to the alexa after jaming my sound devices? Any help would be much appreciated as I'm starting to sweat here....:) Thanks! Quote Link to comment Share on other sites More sharing options...
pkautzsch Posted August 30, 2016 Report Share Posted August 30, 2016 The manuals are all readily downloadable on the manufacturers' sites. I'd expect at least the Lockit manual to explain precisely your setup (sound recorder, camera, lockit box) as this is the very basic standard scenario. Probably it's in the 744 manual somewhere too. In short: 744 is master on 24h run. Sync ACL from 744, set cam to external TC, leave ACL connected to cam all the time. Edit: you need to know what standard framerate they're shooting at, of course. Quote Link to comment Share on other sites More sharing options...
John Blankenship Posted August 30, 2016 Report Share Posted August 30, 2016 You also should invest some sweat equity into learning the differences between "time base," "time code," "frame rate," and "sensor rate." Quote Link to comment Share on other sites More sharing options...
itaro Posted August 30, 2016 Report Share Posted August 30, 2016 Excellent, thanks a lot guys! Going through the the Lockit manual as well.... Quote Link to comment Share on other sites More sharing options...
Philip Perkins Posted August 30, 2016 Report Share Posted August 30, 2016 For 744 TC: "Free Run" not "24 hr run". Quote Link to comment Share on other sites More sharing options...
itaro Posted August 31, 2016 Report Share Posted August 31, 2016 Why using the Free Run but not 24 hr run? Any advantage? Quote Link to comment Share on other sites More sharing options...
pkautzsch Posted August 31, 2016 Report Share Posted August 31, 2016 Free Run: you set the TC independently from system time. You will need to do so when the machine has been switched off and disconnected from power for a certain time, but normally it will hold fine during battery changes during the day. 24 hr run: recorder on startup jams TC to its system time. As it does this on a reboot too, and system time isn't as accurate as the Ambient TC chip, you might get offsets when you don't re-jam the other devices. I prefer 24hr because it saves me setting a TC value, and I leave the 788 on external power and internal backup battery all day. Quote Link to comment Share on other sites More sharing options...
itaro Posted August 31, 2016 Report Share Posted August 31, 2016 Thanks pkautzsch, loud and clear Quote Link to comment Share on other sites More sharing options...
DeJuan Posted September 17, 2016 Report Share Posted September 17, 2016 Hello to everyone on this topic.I'm on the 14th day of recording with SD688 and Alexa Mini without lockit box at all. Jamm in the morning and just checking from time to time. No drift when changing batteries. Everything is ok.Sent from my SM-N910C using Tapatalk Quote Link to comment Share on other sites More sharing options...
paul55 Posted September 24, 2016 Report Share Posted September 24, 2016 I have some right angle Lemos for mini coming but only 10 Quote Link to comment Share on other sites More sharing options...
Jim Rillie Posted September 24, 2016 Report Share Posted September 24, 2016 11 hours ago, paul55 said: I have some right angle Lemos for mini coming but only 10 If you go for a RA Lemo, just be aware that there may be several options available for what direction the Lemo goes. They are not like the XLR RAs , which can be directed to . The problem with the RA Lemo I bought is that it angles down, and the camera guys complain that it must be removed each time they change a memory card. Some may argue that this is good practice (re-establishing the sync) but that is not what the camera dept wants to hear, or deal with. Have gone back to regular Lemos. They don't really want to jam up anything too close so they can access to the memory cards, anyway. Just my 2 cents. (cents now extinct where I live, so we'll have to come up with a new expression here;) Best Jim Rillie Production Sound Mixer Quote Link to comment Share on other sites More sharing options...
Wandering Ear Posted September 24, 2016 Report Share Posted September 24, 2016 Jim, have you found other orientations of the Lemo's? So far I've only been able to find one oriantation, which is the one you had that goes down and blocks the media door. I'd love to know the part numbers for the other oriantations. Thanks Quote Link to comment Share on other sites More sharing options...
Philip Perkins Posted September 24, 2016 Report Share Posted September 24, 2016 Yeah. Quote Link to comment Share on other sites More sharing options...
Jim Rillie Posted September 24, 2016 Report Share Posted September 24, 2016 No, I haven't , but rumours abound... Quote Link to comment Share on other sites More sharing options...
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