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Chat Page News
Thursday 23rd March 2017

Please bookmark http://chat.palsite.com/chat_page.py as the new URL.

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Walter Steenvoorden
Friday 10th November 2000
9:31 am U.K.

waltersn@zonnet.nl

Audio meters, well i have had my share of fun once with a norwegian audio mixer wich measures in dBM wich in fact has 0dBV (VU) rated at -6dB. You could compare the three 0dB on a VU meter is -4dB VU on a dBP (Peak level) and -6dBM on a dBM(=PPM, =parts per million divided by 4mV??) scale. The nasty thing is that dBV o VU measures the average (RMS) power at nominal level, the dBP works by "capacitating" peak levels and the dBM is rather expensive and most of them work with DSP's, our Allen & Heath has them. In Radio is always set voice at -6dBM and music at -5dBM, the processor an Orban Optimod FM, then adjusts the balance between the peaks of certian "ear-noticable" parts of the audiospectrum, giving the final signal. I always use 4 tones to set up a link or a recorder, the 1st) at 1000Hz, the 2nd at 450 Hz, the 3rd tone at 11000 Hz and the 4th at 18000hz. All are set at -9dB on dbM. I always try to listen before adjusting anything, the best meters i have are my ears. I often patch in stereo expanders and compress/limiters on some jobs because the provide very poor audio (such as chinese 1 inch NTSC materials, wich more dropouts than the Santa Monica presidential polling)

Ben Conrad
Thursday 9th November 2000
9:38 pm U.K.

teeyee@yahoo.com

the VP-5030 does not put out a color signal when you use XBR tapes, and since I only have a pile of XBR's that I want to dub to DV I'm selling the deck. I read that it is useful has a deck for a gallery, since it has superior looping capabilities. The deck works great, except for no color on the XBR tapes. Argh! Well, maybe someone will find it useful.

thanks,

again go to my Ebay auction:http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=493305920

Ben Conrad
Thursday 9th November 2000
9:34 pm U.K.

teeyee@yahoo.com

I'm selling a SONY Umatic VP-5030 3/4 PLAYER PERFECT PAUSE This is a Sony 3/4 video player VP-5030. If you want professional quality video at a fraction of the cost of digital then this is the way to go. This machine has so many options it's hard to name them all. Skew adjustment, tracking, Audio Monitor, Remote plug in for use with sony controllers and RF output channel 3 or 4. The unit appears in good condition. Appears to work fine - Not Thoroughly Tested & Sold AS-IS. go to my ebay auction. bidding has started at $100.00

http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=493305920

Tom Mountford
Thursday 9th November 2000
8:52 pm U.K.

tom.mountford@talk21.com

Hi... again!

I've just been trying to figure something out - it's had us all puzzled at work, we've all learned different ways of doing the same thing so I'd be grateful to hear some other views on this...

Is 0db tone 0VU, and does 0db and 0VU equal PPM4? I've been told that PPM4 at 0db is -2VU but I have to generate 1khz tone in Cool Edit Pro at -14db (apparently because it's digital) to match the tone at PPM4 with the fader at 0 on my desk. I'd always thought that you set zero as the highest level that the audio would rise to and mixed the sound to that. Recently I was told that zero is just the average signal level and I'd be okay to go into the red on some peaks - because in radio you peak voices at PPM5 and music at PPM6. Is there a simple explination to all of this? How do the levels compare over each of the scales?

Thankyu very much!

Tom Mountford
Thursday 9th November 2000
6:30 pm U.K.

tom.mountford@talk21.com

Howde everyone!

I think my 4800 must have been involved in an F16 crash, then badly burnt by the smell of the thing! <g> I think NASA record most of their launch pad cameras to VO9850s, I'd have thought they'd have row upon row of Digi's but apparently not...

Ben - There are two things it could be apart from an electronic fault, the 5030 could be switched to SECAM but there's also a switch on the rear of the machine labelled 'monitor out - colour/B&W' (shows how old the 5030 is!) that I think removes the colour burst to use the deck with mono monitors - is it switched to B&W?

Mick
Wednesday 8th November 2000
7:58 pm U.K.

dav@electronics.swinternet.co.uk

I have available a bvu -800 which is in good working order but has scratches to the top front. Also I have a bvu-800P which is also in good condition with scratches to the top front, this is high and low band (converted by Sony).

Offers welcome.

http://www.electronics.swinternet.co.uk

Walter Steenvoorden
Wednesday 8th November 2000
10:00 am U.K.

waltersn@zonnet.nl

I heard it from a guy who works at Leeuwarden (Netherlands air force 322/323 Sqds) air base and services the on baord avionics on the dutch F16's , C-130's and Apache's. The VO4800s have been replaced by VHS (Bah..) machines on the dutch F16's , the US VO4800's he serviced in Italy are modified and i'm not sure on the logo's on the machine. Also the pod's wich go under a (R)F16A as flown by 306 sqd of our airforce have a lens control wich is industry standard and compatible with most lens RC's. The VHS used by our airforce is time lapse recorded on metal tape, and records mono audio, and is in black and white.... I once used a Panasonic NV9400 (with my old Hitachi FP10E/K and a big fujinon lens...) in a cessna and it worked perfectly, only during take off and landing i had some lost frames (bumping on the ground).

Ben Conrad
Wednesday 8th November 2000
7:01 am U.K.

ben@hellologan.com

I have a VP-5030 and cannot get a color signal from the deck to the monitor. help?

Matt Rathney-Quinn
Tuesday 7th November 2000
9:35 pm U.K.

matt@tfgtv.co.uk

They do have that 'aerospace' look about them. Perhaps they were used as some sort of Data recorder or, for the HUD recording Walter mentioned? Strange machines and it would be interesting to find out what they were used for. ...Do they carry a Umatic Logo??

I find it surprising that a 4800 would cope with the sort of Gyro errors which would be invoked aboard an F16. That said, I've used them aboard fast moving yachts without so much as a glitchy frame, where other machines have produced useless garbage.

John
Tuesday 7th November 2000
1:19 pm U.K.

umatic@bigpond.com

Airborne Umat? well....

I have seen a few "TEAC" units at the regular weekly government auction I go to in amongst occasional aerospace equipment days. I have seen a few on ebay too. And a guy there told me they are no good as they dont work when you playback the tapes in a regular deck, he said they are slower than normal units. They look real odd too!

http://users.bigpond.com/jsparkin/pics/umat/weird/a.jpghttp://users.bigpond.com/jsparkin/pics/umat/weird/b.jpg

I hope this is off some help

John

Walter Steenvoorden
Tuesday 7th November 2000
10:20 am U.K.

waltersn@zonnet.nl

A Sony salesperson todat walked in, bragging about their Betacam SX /IMX 50 system as being the only MPEG II broadcast system available. Then he saw "our" MPEG recording DMR4000 machine. He was stunned.

I did some timelapse recording from a PCMCIA pc-tv board with webcam software, with intervals set at 5 seconds. Grabbing from a Sony DXC-D30 via a S-VHS output plug at a res of 576 * 768 pixels at 32 bit colours. I admit you'll probally gonna need a Pentium 200 MMX/ K6 or higher laptop to run it (i used a Pentium II 300 Mhz Toshiba and had some hicks from time to time). Timelapse recording with VCR's has always been quite tricky, using a laptop with a grabber works better.

And did you know U-matic is also an airborn format?. The US Air Force installed VO4800's in their F16A/Bs to record HUD (Heads Up Display) images. So if you watch the telly and see a serbian mig blown to peaces you know it's recorded on a old u-wrapper....

Tom Mountford
Monday 6th November 2000
8:38 pm U.K.

tom.mountford@talk21.com

It ain't quiet anymore!

David - You can do this very cheaply, a capture card like the Miro Studio 400 (about 80 quid I think) will connect just fine to the BY110. Adobe Premiere has a timelapse capture setting (only in the original v4.2 I think. Ask around, someone usually has an old copy) which can be set to capture regular frames over any period of time you like, with a VTR you'd have to get an external stop-frame controller, and they used to be very expensive when timelapse to tape was the only way - the 6800 isn't frame-accurate so isn't up to the job.

Computers can be left running for weeks or more in timelapse, VTRs have moving parts that have to start and stop and tape that can wear or go slack, resulting in a mucky cut when a frame is grabbed. I believe the Studio 400 will run on a laptop so taking a timelapse system on location would be easy and with it being timelapsed as it's recorded you wouldn't take up much of the disk. The results really would be infinitely better.

Matt Rathney-Quinn
Monday 6th November 2000
5:36 pm U.K.

matt@tfgtv.co.uk

Heloooooooooo

Anybody in here? ..it's been awffy quiet this past couple of days

Thomas Eisl
Thursday 2nd November 2000
3:52 pm U.K.

tomeisl@cwcom.net

Anyone know how the pins on the Dub connectors on a VO 9800 are wired?

Thomas

Matt Rathney-Quinn
Thursday 2nd November 2000
12:53 pm U.K.

matt@tfgtv.co.uk

David,

I haven't tried it but I doubt if a 6800 will do what you want ..or many other VTR's for that matter. A better approach might be to feed your camera to a computer based sytem ....i.e. capture card, then string the resulting short clips together in an editing programme such as Media Studio or Premiere .....you can of course output that to your 6800....

Matt

David R. Israel (usa)
Wednesday 1st November 2000
11:23 pm U.K.

disrael@skgf.com

Hi-- here's a perhaps simple question: does the Sony VO-6800 U-matic deck have single-frame capability? My tentative gameplan (if I purchase certain gear) would be to use a JVC BY110 video camera and the 6800 deck, with intention of doing shots of painting-in-progress -- i.e., a sort of self-regulated time-lapse; (basically same idea as what's used for cartoon work I guess). I've not been able (with initial search) to find specs for the 6800 and get an answer to this question -- but discovered this board & thought I could trouble you'all with the inquiry. Many thanks!

Walter Steenvoorden
Wednesday 1st November 2000
10:32 pm U.K.

waltersn@zonnet.nl

Ahh the dub tot svhs thingie. Well we had a big discussion on it some time ago. And yes it is posible to convert the dub to svhs only it's expensive. The signal needs to be modulated on to a higher subcarrier and corrected by a machine. Those are hard to find and come at big figures. You could try a time base corrector (if it's not installed) for better playback.

Ray Clear
Wednesday 1st November 2000
5:13 pm U.K.

us@screne.org

Hi to the forum. Have been using umat since 1980still a great format! now the question.Does anyone know if our VO-9800P can be converted for Svhs out? I need to connect to matrox RT2000 at better quality than composite.

David Canham
Wednesday 1st November 2000
7:23 am U.K.

david.canham@bbc.co.uk

1 x Sony BVU800 Edit VCR and 1 x JVC PR900E (very similar to BVU800 ). Both machines are in good working order and condition. Both are complete with full operational and service manuals. Reasonable hours on both. Quick sell required due to relocation. Looking for around 450 ono for both. May also sell separately. More info on 07977 592235

Thomas Eisl
Wednesday 1st November 2000
1:01 am U.K.

tomeisl@cwcom.net

re: sound signalMatt,I've checked the leads and they are ok. (signal pin 2, 1+3 gound).Camera (Canon MV100) specification states :Audio terminal: -11.5dBV, less than 3kohms, unbalanced. (afraid this does not mean much to me)

It turns out it's not quite as bad as I originally thought. If I turn the recording level right up to maximum the result is just about acceptable. In my amateurish perception I always felt the camera microphone was too sensitive and now the situation seems reversed. I'd still appreciate any suggestions.

Looking at the camera specs I noticed:Vidoe teminal: 1Vp-p/75 ohms unbalanced.Does this have any relevance to the 75ohm switch next to the vidoe input on the 9800? Should that be on or off?

Thomas

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