Arri Alexa 35 Won’t Accept Denecke JB-1

[George]

Not sure if anyone else experienced this but I just started a show with the Alexa 35. After 2 days, they will no longer accept timecode from the JB1 sync boxes.  Switched out cables, different boxes, switched between the two cameras, changed output levels on boxes. Nothing is working. They will take the time code but eventually give an error code. However, the cameras do take Ambient sync boxes. Would love to solve this as I’m sure there is something we aren’t thinking of.

 

Thanks,

 

George

[Philip Perkins]

So for the first 2 days the JBs worked ok?   If so that sounds like a camera issue.  Did they sneak in a firmware update on you?

[George]

Hi Philip, That was the first thing I asked. They said they didn’t. The last firmware update from Arri was back in Oct. Hopefully, a new firmware update will remedy the situation. Until then, we’re staying with the Ambient. Thanks

[Axel Mishael]

Any input follow up on the deneckes with the Alexas?

 

 

Axel.

[Philip Perkins]

Are other brands of TC boxes working ok with this camera?

 

[George]

Denecke’ s still don’t work with the current firmware on the Arri 35. I’m still using Ambient. Our utility had Ultrasync One’s. They worked as well. I talked to Denecke and there is no other incidence of this. The plus side is I really like the Ambient Nanolockit.

 

 

[Philip Perkins]

I wonder if Denecke would send you a new loaner to try?

[johngooch]

From time to time i end up using tentacles as last ditch effort with some Alexa minis when JB-1 do not work..   do not know why but it has happened several times.   

[John Blankenship]

Some of the early JB-1s had an issue with a wrong component installed. Denecke fixed mine at no charge.

 

The issue I had that led me onto this was that the voltage output would slowly diminish on one of my units (I compared two units with a VOM at different voltages). 

 

[referencetone]

Just ran into this problem today. Alexa 35 accepted timecode from my Betso box yesterday, but today it apparently took several tries before it accepted it.

 

”Connected time code signal cannot be used for time code tuning. (#90)” 

[Patrick Tresch]

Isn't it related to the level output of the box?

I had this problem on a camera, at the end it was solved changing the level output setting of the TC box.

[Philip Perkins]

19 hours ago, Patrick Tresch said:

Isn't it related to the level output of the box?

I had this problem on a camera, at the end it was solved changing the level output setting of the TC box.

More or less level?  I've had it go either way....

[JonathanReye]

I've also ran into this problem at work. I own 4 JB-1s and 2 out of the 4 can jam cameras A & B. The other two causes Camera A & B errors, but for some reason one of them that can't jam camera A & B can Jam camera C. Very confused... Guess I'll call Denecke on Monday.

[George]

I called Denecke at the very first incidence of this they said it was on the camera end. About a month later I called again asking if they had anybody else contact them regarding the Arri 35 issue. They said they had not. The show just ended. I do hope to resolve this at a local camera department. I did change output volume, I tried a brand new JB-1 with new cable. It still didn’t take it without an eventual error code. So, I’m sticking with the Ambient. I’ll still use the JB-1 with other cameras. With (4) JB-1’s and assorted cables, it’s too much of a commitment to switch at this point

[Phillip C Dent]

I worked with the Arri 35 yesterday. I did not have any timecode or audio level issues. My Denecke JB-1 jammed the camera immediately. I disconnected and re-jammed multiple times to see if I could cause an issue.  The 35 took the time code every time.  
 

I had also read somewhere that this camera would change audio input levels when power cycled. I was paranoid the entire day, so at every battery swap I checked the settings on the Sonosax AEM. I had the camera set to aes input and I had no issues the entire day.