Yes, nice unit. I have one of these too. I believe a composite off-tape output is required for chroma burst, and your'e quite right about the DUB tape output, both Y&C signals present. Thanks for reviewing.
Ah now that sounds like it may be a good explanation of why there's no colour without the Composite connection. I spent ages trying to work out why I had no colour when I first set up one of these, and another chap in the business (RIP) told me to hook that up, I thought it was crazy.
DPS was a Canadian company, based in Toronto, where I was an online editor back in the 80s & 90s. They did make an NTSC version as well. These are funny devices, since they were kinda pricey. They flaunted a trend of major manufacturers building the TBC into the VTRs, at least the more serious models, like the Sony BVU & BWV series. To save money the industrial (ie non-broadcast) models, like the VO & PVW series, required external TBCs.
My Sony PVW-2800 has a built-in TBC. From the specs "TBC Remote Control. In addition to the built-in TBC adjustment of the PVW-2800, remote adjustments may be performed using the optional BVR-50 connected via the D-sub 15-pin cable to the real panel connector (TBC REMOTE)."
I have a DPS-295 that is nearly identical to yours that services NTSC U-Matic. I also have a DPS-210 that is merely a Dub to S-Video converter without the inbuilt TBC.
Alas no it's not generally available. Hence I was able to get permission to use it for my channel. It was from a Betamax PCM digital audio tape that I ran for a customer.
I have one of these also, which I fired up recently. I was worried I was going to have to change loads of capacitors but so far, so good. I also have a For-A FA-320 and Snell & Wilcox TBS-24, but do prefer the DPS-375 for its dub inputs. Any experience of the Electrocraft dub to s-video converter boxes ? I hear these are pretty good but are not a TBC, just a converter. They seem to be incredibly scarce too.
I had heard of those but I really wanted a TBC with digital dropout compensator for the best Umatic results. However I don't yet know what a good NTSC solution would be. It might be that the DPS-375 used high grade capacitors with a low failure rate. I'm sure it was stupidly expensive in its day. Are both of your fans running OK? They are noisy beasts because 40mm fans are horrible things.
hi i used to have it like you in the studio i stopped doing it like that i keep all my video and recording gear in racks in the old where the blow air heating was i have a big cat and i have to be safe i love all the gear you have and i have talked to alot of wife's love to take over the homes and kicks some many men out of there homes why i have a cat i have the last word not the lady bob
Ahh the old tech, still doing it's job spot on :-D I can't guess how much that would have cost new, quite a lump of cash i guess. Did you check the state of it's psu?, bound to have some worn out caps.
The fans have arrived today so I may get to have a look at the PSU later when I fit that/those. I suspect these units were horribly expensive, but they are still very capable and well worth it.
Going a little off topic, you mentioned B-MAC briefly in the text - is there any surviving technical info on that format? I've been re-implementing some old, rare or extinct video formats recently and that's one that comes up from time to time. I've got D/D2-MAC working but from what I understand the B version is mostly unrelated despite the name.
There's a little information on Wikipedia. It was used in Australia but I think the point of it was not to be direct to the home. I had a DMAC received which I converted to D2MAC back in the day. I did a web page about it: www.colin99.co.uk/bsb.html I still have a BSB mini-dish but alas I don't think I still have a Squarial.
@@video99couk Ah, I remember that page from when I was first researching DMAC. Thanks for writing about it! The BSB boxes where a little trickier to get working than the standard MAC decoders, they seemed to have a very limited firmware. Took a bit of brute forcing to get the correct audio settings.
I was looking at the FORA FA-300P which appears to have similar connections to the DPS-375SP. Do you know if that unit would be able to serve the same function for converting DUB to S-video?
@@video99couk Thanks, It's confusing because 7-pin and s-video inputs are available but they are labelled together as YC443. I'm concerned that means that the 7-pin is expecting regular s-video signal and not DUB. Such a gamble...
For VHS we have the luxury of being able to select SVHS machines with built in TBCs, such as the Panasonic NV-HS1000 (I repaired one recently). But an external TBC can be handy too. For Beta we don't have that luxury. I use the GTH Electronics ACE converters with SVHS and Beta. They are sensibly priced, when you can find them on eBay or similar. Another one I like is the G2 MSTC Ultima, but it's another one that's hard to find.
Thanks for the video! I have a JVC KM-F250 TBC that output black when active (through the "operate" switch) with the "low video level" light on. Also tried to adjust level with the trimmer but no luck. Can you help me? Thanks already
Probably capacitor failure somewhere. Only real solution would be to go through it with a service manual and oscilloscope. You can use a DVD player to generate a colour bar test pattern fairly easily.
@@video99couk Thanks for the precious hint! Since I'm not so skilled in repairing electronics, would you be able to follow me step by step doing this repair?
Ebay jobs, 40mm 12V. However the original fans are much deeper, and consume 0.2A. The replacements consume 0.08A. They really don't shift as much air. So I've fitted just one for now and will look for more suitable replacements. I considered stacking two but I don't think that would actually help very much.
I don't know that model. But in general there is a workaround which can work with most TBCs: Take the luma signal from the Dub socket (look up the pinout for that), and feed that to S-Video Y input. Then take the Composite Video output from one of the Umatic BNC connectors and feed that into S-Video C input. Most TBCs will strip out the luma and sync from the composite signal and treat it just as Chroma. Then you get a full proper Dub quality signal. I'm pretty sure that's what the DPS375-SP is doing internally.
thanks for the answer, I have a sony vo9850 and thanks to your advice I was able to change the belts, now I wanted to try to improve the signal which in composite is very poor so I was wondering if you want what you show in the video (dps) sell, I tried to look for it on ebay but I can't find it, also the tbc JVC km-F250, maybe that is better than the st411-e, I can't find it on ebay.
@@northernplacecorporation I checked my Sony dub cables. Nope, don't have _exactly_ that particular all-metal style. I remember them distinctly. Seems like I saw those just the other day... but that was up to ~46 years ago. Sorry.
Wouldn't it be easier if you mount all that wonderfull AV equipment in 19 inch racks ? If you use the wheeled type you can just rotate them if yo uj need to switch cables...
There's just not enough room in my studio for a rack. I've considered it several times but I can't see a way to fit it all in. I used to work on racked equipment all the time in a previous life.
@@video99couk I use 3 small ones that just fit under my workbench. Made all in/out connectors to the front, works a treat. Got them from Samson. Will just fit 3 Tascam 8track Hi8 recorders.
@@huskyneusify Well I am going to re-model one quarter of my studio (the part where the Umatic and Betacam machines are) so I will consider it again in the future. The big (strong) wooden table which has that equipment at the moment, is not an ideal solution.
@@video99couk how about those desks that have the racks built in to act as the legs? They do them in varying sizes and even have mini racks on the top for shallow mount bits. Meant for radio studios but they'd be perfect if you have the room! As always a great video, 😊
I can vouch for the DPS-95. I have one that is connected with a Sony BVU-900 to transfer NTSC U-matic videocassettes to digital ProRes files (via an AJA Kona LHE-Plus transcoder). The manual for the DPS-295 is at this web address: ia802707.us.archive.org/17/items/DPS295/DPS-295.pdf
Yes, nice unit. I have one of these too. I believe a composite off-tape output is required for chroma burst, and your'e quite right about the DUB tape output, both Y&C signals present.
Thanks for reviewing.
Ah now that sounds like it may be a good explanation of why there's no colour without the Composite connection. I spent ages trying to work out why I had no colour when I first set up one of these, and another chap in the business (RIP) told me to hook that up, I thought it was crazy.
DPS was a Canadian company, based in Toronto, where I was an online editor back in the 80s & 90s. They did make an NTSC version as well. These are funny devices, since they were kinda pricey. They flaunted a trend of major manufacturers building the TBC into the VTRs, at least the more serious models, like the Sony BVU & BWV series. To save money the industrial (ie non-broadcast) models, like the VO & PVW series, required external TBCs.
My Sony PVW-2800 has a built-in TBC. From the specs "TBC Remote Control. In addition to the built-in TBC adjustment of the PVW-2800, remote adjustments may be performed using the optional BVR-50 connected via the D-sub 15-pin cable to the real panel connector (TBC REMOTE)."
@@randywheelerdotcom Independent TBC is much better than those built-in TBC
X75 and DPS575 support PAL & NTSC
Looks like it's full of tantalums. If it ever develops a short, then at least you know where to start!
4:25 Yes, lots of them! It would be an awful thing to fault find if ever it fails.
I remixed all my digikal Reggae tunes from a few years back. They all sound wicked now, please give them a listen!
Nice!
I have a DPS-295 that is nearly identical to yours that services NTSC U-Matic.
I also have a DPS-210 that is merely a Dub to S-Video converter without the inbuilt TBC.
Does the DPS-295 include the dub connectors? If so, I want one!
@@video99couk It has dub connector ports on it, yes.
ia902707.us.archive.org/17/items/DPS295/DPS-295.pdf
For-A FA-450 as well is capable to do it ;-)
If I ever get a FA-450, I will certainly try it out for this task.
Good video. Cannot find “Let It Run” by Cristie/MacFarlane. Is it available, or stream?
Alas no it's not generally available. Hence I was able to get permission to use it for my channel. It was from a Betamax PCM digital audio tape that I ran for a customer.
I have one of these also, which I fired up recently. I was worried I was going to have to change loads of capacitors but so far, so good. I also have a For-A FA-320 and Snell & Wilcox TBS-24, but do prefer the DPS-375 for its dub inputs.
Any experience of the Electrocraft dub to s-video converter boxes ? I hear these are pretty good but are not a TBC, just a converter. They seem to be incredibly scarce too.
I had heard of those but I really wanted a TBC with digital dropout compensator for the best Umatic results. However I don't yet know what a good NTSC solution would be.
It might be that the DPS-375 used high grade capacitors with a low failure rate. I'm sure it was stupidly expensive in its day.
Are both of your fans running OK? They are noisy beasts because 40mm fans are horrible things.
hi i used to have it like you in the studio i stopped doing it like that i keep all my video and recording gear in racks in the old where the blow air heating was i have a big cat
and i have to be safe i love all the gear you have and i have talked to alot of wife's love to take over the homes and kicks some many men out of there homes
why i have a cat i have the last word not the lady bob
Ahh the old tech, still doing it's job spot on :-D
I can't guess how much that would have cost new, quite a lump of cash i guess.
Did you check the state of it's psu?, bound to have some worn out caps.
The fans have arrived today so I may get to have a look at the PSU later when I fit that/those.
I suspect these units were horribly expensive, but they are still very capable and well worth it.
anyone have the S&W Rolcall software, download link perhaps......
Going a little off topic, you mentioned B-MAC briefly in the text - is there any surviving technical info on that format? I've been re-implementing some old, rare or extinct video formats recently and that's one that comes up from time to time. I've got D/D2-MAC working but from what I understand the B version is mostly unrelated despite the name.
There's a little information on Wikipedia. It was used in Australia but I think the point of it was not to be direct to the home.
I had a DMAC received which I converted to D2MAC back in the day. I did a web page about it: www.colin99.co.uk/bsb.html
I still have a BSB mini-dish but alas I don't think I still have a Squarial.
@@video99couk Ah, I remember that page from when I was first researching DMAC. Thanks for writing about it! The BSB boxes where a little trickier to get working than the standard MAC decoders, they seemed to have a very limited firmware. Took a bit of brute forcing to get the correct audio settings.
@@video99couk I found BSB fascinating. Shame although it was the superior technology it lost out to the cheaper tech used by Sky!
I was looking at the FORA FA-300P which appears to have similar connections to the DPS-375SP. Do you know if that unit would be able to serve the same function for converting DUB to S-video?
I don't know that unit, but if it has Dub inputs then I would expect it to. Also check to see it has an RF input for the dropout compensator.
@@video99couk Thanks,
It's confusing because 7-pin and s-video inputs are available but they are labelled together as YC443. I'm concerned that means that the 7-pin is expecting regular s-video signal and not DUB. Such a gamble...
What would you suggest for time base correction on standard PAL betamax or VHS machines?
For VHS we have the luxury of being able to select SVHS machines with built in TBCs, such as the Panasonic NV-HS1000 (I repaired one recently). But an external TBC can be handy too. For Beta we don't have that luxury. I use the GTH Electronics ACE converters with SVHS and Beta. They are sensibly priced, when you can find them on eBay or similar. Another one I like is the G2 MSTC Ultima, but it's another one that's hard to find.
Hello. Do you have a dub cable to s-video for sale. Or perhaps a link to a web shop to buy one?
There's no such thing, the signals are incompatible. Actually I'm going to be talking about that on my next TH-cam video in a few days.
@@video99couk What about this: www.bhphotovideo.com/c/product/196939-REG/Prime_Image_C_Specific_Dub_Cable_for.html
Thanks for the video!
I have a JVC KM-F250 TBC that output black when active (through the "operate" switch) with the "low video level" light on. Also tried to adjust level with the trimmer but no luck. Can you help me?
Thanks already
Probably capacitor failure somewhere. Only real solution would be to go through it with a service manual and oscilloscope. You can use a DVD player to generate a colour bar test pattern fairly easily.
@@video99couk Thanks for the precious hint! Since I'm not so skilled in repairing electronics, would you be able to follow me step by step doing this repair?
It was made in Canada, so they must have made an NTSC version of it.
Yes, I think it was model DPS-295.
@@video99couk We have a couple at work, I'll check Friday.
@@video99couk @video99couk Do you know other models supporting UMATIC DUB PAL
The DUB cable works best with reggae.
Can you tell me what replacement fans did you purchase?
Ebay jobs, 40mm 12V. However the original fans are much deeper, and consume 0.2A. The replacements consume 0.08A. They really don't shift as much air. So I've fitted just one for now and will look for more suitable replacements. I considered stacking two but I don't think that would actually help very much.
Hi, do you think JVC SAT-411e can do the same thing with dub umatic sp? is that your tbc the only one that can do this kind of transcoding?
I don't know that model. But in general there is a workaround which can work with most TBCs: Take the luma signal from the Dub socket (look up the pinout for that), and feed that to S-Video Y input. Then take the Composite Video output from one of the Umatic BNC connectors and feed that into S-Video C input. Most TBCs will strip out the luma and sync from the composite signal and treat it just as Chroma. Then you get a full proper Dub quality signal. I'm pretty sure that's what the DPS375-SP is doing internally.
thanks for the answer, I have a sony vo9850 and thanks to your advice I was able to change the belts, now I wanted to try to improve the signal which in composite is very poor so I was wondering if you want what you show in the video (dps) sell, I tried to look for it on ebay but I can't find it, also the tbc JVC km-F250, maybe that is better than the st411-e, I can't find it on ebay.
@@paolopalombo62 I won't be selling the DPS375SP, but they do come up for sale occasionally.
The dash is supposed to be inbetween the "U" and "matic".
Maybe, but I've seen it without the dash many times too.
@@video99couk The name of this first videocassette format spelled as "U-matic" properly.
@@northernplacecorporation Yep, 3/4" U-matic with a fancy script "U"
Hmmm, 9:28 I'll look for that...
@@FindLiberty I see.
@@northernplacecorporation I checked my Sony dub cables.
Nope, don't have _exactly_ that particular all-metal style. I remember them distinctly.
Seems like I saw those just the other day... but that was up to ~46 years ago. Sorry.
Wouldn't it be easier if you mount all that wonderfull AV equipment in 19 inch racks ? If you use the wheeled type you can just rotate them if yo uj need to switch cables...
There's just not enough room in my studio for a rack. I've considered it several times but I can't see a way to fit it all in. I used to work on racked equipment all the time in a previous life.
@@video99couk I use 3 small ones that just fit under my workbench. Made all in/out connectors to the front, works a treat. Got them from Samson. Will just fit 3 Tascam 8track Hi8 recorders.
@@huskyneusify Well I am going to re-model one quarter of my studio (the part where the Umatic and Betacam machines are) so I will consider it again in the future. The big (strong) wooden table which has that equipment at the moment, is not an ideal solution.
@@video99couk how about those desks that have the racks built in to act as the legs? They do them in varying sizes and even have mini racks on the top for shallow mount bits. Meant for radio studios but they'd be perfect if you have the room! As always a great video, 😊
I can vouch for the DPS-95. I have one that is connected with a Sony BVU-900 to transfer NTSC U-matic videocassettes to digital ProRes files (via an AJA Kona LHE-Plus transcoder). The manual for the DPS-295 is at this web address:
ia802707.us.archive.org/17/items/DPS295/DPS-295.pdf