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Old October 4th, 2016, 03:51 PM   #1
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Location: Glasgow , Scotland
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Powering the FS-4 recorders

Not long after I acquired my DSR500 WSP camcorder , a friend offered me a load of accessories which he no longer used - these included a number of PAG L95 batteries ( PAGLOK version ) but with the V lock adaptor to allow them to be used on my camera , charger , some radiomic kit ( Sennheisser 3000 series ) , and last but not least three FS-4 Pro HD recorders .

Now the three Firestore recorders came with mains adapter/chargers , but the onboard batteries don't hold much of a charge and , as far as I can tell , replacements are no longer available - unless someone on here knows better ?

The recorders all work fine - one ( in a black case ) is a genuine FS4 HD unit with something in excess of 300 mins record time capacity , and the other two ( in silver cases ) are standard FS-4 units which have had the software upgrades so that they function as FS-4 HD units , but only have around 170 min capacity - I've had a look inside and read up on here so know that fitting larger hard drives for extra capacity would be straightforward enough .

Besides the mains adapters , I got a 4pin Hirose to 2.5mm coaxial dc cable , which my friend told me I could use to power the Firestores from my camera , rather than being tied to mains power . The first time I tried to do this , the FS-4 worked for about 15 mins then gave the low battery alarm , so I had to switch it off - fortunately I was running tape as well ( not yet being confident in these units ) so the job wasn't compromised . On investigation afterwards , there was no output from the cable and , metering through the cable , there was no continuity . I presumed I had a duff cable and never bothered about it for a while since I was either recording conferences from a static position and therefore running off mains power wasn't a problem , or just doing short bits & pieces outside when I would shoot on tape , either with the DSR 500 , or more often , with my HVR V1e .

However , just recently I felt I ought to sort this out , so I blew 40 ordering a Hawk-Woods LA23 cable from CVP , fully expecting that to work - only it didn't :( This new cable meters through correctly , which the older one doesn't - so the earlier cable was indeed faulty , but , metering the pins on the 4 pin Hirose dc output connector on the back of my camera , there is no measurable 12V output - so it looks as though I have/had two faults ! I just found this out tonight , and going through the DSR500 manual I can see no menu or switching option to enable/disable the rear 12V output . I do have the onboard radiomic receiver case which is working with power from the camera , and don't suppose this disables the Hirose socket ? I might try removing the WRR box to see if it makes any difference . I have also checked the breaker button on the underside of the camera , but I presume this would trip the whole camera out anyway . My best guess is that there may be an internal solid state fuse which has blown , but will need to investigate this further . In the meantime , I've made up a cable using a PAG PP90 dc coaxial connector to a standard 2.5mm dc coaxial connector , with the required polarity change from negative centre on the PAG plate output to positive centre on the Firestore input - this seems to be working well enough , although it would be neater if I can get the 4 pin Hirose output on the back of the camera working .

The plan , ultimately , is to use the two silver units as FS-4 recorders , recording SD with the DSR500 , and taking power from the camcorder ; and to use the black FS-4HD with my HVR V1e , but for this I need to sort out another power supply since the internal battery lasts only a few minutes and the camcorder batteries are 7.2V ; I also need to sort out some sort of mounting solution for using with this camera , but am quite handy at metal fabrication so will do this as a DIY job .

I suppose the point of this post is just to see if anyone has come across this issue before , and if so , how they solved it ?

Last edited by Derek Heeps; October 4th, 2016 at 04:35 PM.
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Old October 5th, 2016, 01:30 PM   #2
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Join Date: Apr 2004
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Re: Powering the FS-4 recorders

not sure if this is of any help as i have not worked with that camera but have previously used the firestores.

i used a separate battery pack from tekkeon that supplied power to the firestore, those have since been discontinued but this should work:


it is selectable to an output of 12v and cables can be made or purchased to connect to the firestore. a mount can be made or velcro will work.

not as convenient as one power solution for the camera and recorders but might be easier.
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