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Old November 18th, 2005, 12:02 PM   #1
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Voltage Level in VF?

I just bought the IDX V-mount adaptor and a battery. Is it normal that the Viewfinder indicates 16 V instead of 7.4 V that the cam needs????

Thanks

Markus
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Old November 18th, 2005, 02:41 PM   #2
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I don't think that is normal at all. Don't use it until you contact your dealer - you risk damaging something. The electronics inside the IDX adapter are supposed to convert the 14.8V into 7.2V. The first batch of Anton Bauer mounts were having a similar problem, but were sent back and then everything was OK. When I use my AB mount it shows a consistent 7.3V for almost 5 hours, and then begins to drop voltage slightly.
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Old November 18th, 2005, 03:31 PM   #3
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I saw that happening with the demo camera I saw in Vancouver. Then we switched the battery because it was getting low and the voltage of the new charged battery was 7.2V. Go figure.
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Old November 18th, 2005, 06:52 PM   #4
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Quote:
Originally Posted by Markus Bo
I just bought the IDX V-mount adaptor and a battery. Is it normal that the Viewfinder indicates 16 V instead of 7.4 V that the cam needs????

Thanks

Markus

Yes, it's normal. (Unfortunately)
I bought this IDX V-mount adaptor couple of months ago straight from IDX (may I was the first) I use with Switronix 130 mAh batteries.
I complained about this, but they said they designed this way, because they thought high end videographers-filmmakers use to use 12V battery systems.
So don't worry Markus, everything fine. My show 16V with fresh battery later drop till 12V
The only thing I can't use to it, at 12V the battery die. (I mean the camera shoot down) They said it's normal. Well.... not for me.
Anyway, what can I do.
Laszlo
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Old November 18th, 2005, 07:39 PM   #5
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That's interesting and in some way even better because that way the VF is actually showing the real voltage of the battery BEFORE it gets converted to the required 7.2V... Heck if it works that way I don't mind.
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Old November 18th, 2005, 09:05 PM   #6
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But this isn't the way it is supposed to work. Are you actually getting 5 hours run time out of the battery?

Quoted straight from JVC's product overview:

Advanced electronics inside the IDX battery bracket convert the voltage of any IDX NP-Style battery to the required 7.2 volts. Built-in over-voltage circuits protect the device.

http://pro.jvc.com/prof/Attributes/f...l_id=MDL101584
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Old November 19th, 2005, 02:16 AM   #7
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Yes, I have the IDX system (mount and batterys) as well very recently. I dont mind about the voltage reading (mine starts at 16 volts as well) as long as I get over 4 hrs out of the batteries. I have used it quite a bit and it seems ok.

Markus, have you noticed how long you are getting out of the battery?

Rob
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Old November 19th, 2005, 03:12 AM   #8
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That's why I like this forum. You're great! Thanks for the answers. I just bought the stuff yesterday on the Broadcast fair in Madrid, so I don't have any experience about duration. The dealer gave me a 130W battery untill the two 60W arrive. I bought pro-x battery and charger. The advantage is to have a separate 12V plug on the battery. So I can connect lights and harddisk at once.

Markus
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Old November 19th, 2005, 10:44 AM   #9
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Quote:
Originally Posted by Robert Castiglione
Yes, I have the IDX system (mount and batterys) as well very recently. I dont mind about the voltage reading (mine starts at 16 volts as well) as long as I get over 4 hrs out of the batteries. I have used it quite a bit and it seems ok.

Markus, have you noticed how long you are getting out of the battery?

Rob
The battery (Switronix Pro-X 130 mAh) was good for about 4-5 hrs working and for 1 1/2 hrs recording time. Also, last night the camera was on about 10 hrs (accidently) before the battery gave up.

Laszlo
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