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The Sony DCR-TRV900 was a DV tape camcorder released by Sony in 1998, with an MSRP of USD $2699. It was intended as a high-end consumer camera, more portable and less expensive than the top-of-the-line DCR-VX1000. It became one of several Sony and Canon models popular in late-'90s desktop video production, delivering quality comparable to then-dominant analog Betacam hardware at a fraction of the cost. In 2002, Sony replaced the TRV900 with the somewhat less well-received DCR-TRV950.
The camcorder had three 1/4-inch CCDs, which provided an exceptionally high-quality video image for a handheld camcorder of the period. It also had a 3.5-inch LCD screen, a color viewfinder, a 12x optical zoom, a 48x digital zoom, and a manual focus ring. (Often overlooked in consumer camcorders, this feature allows you to focus using a mechanical ring around the lens, offering precise control.) The camcorder included a FireWire port for transferring video to a computer.
At the time, Sony had a pattern of releasing "professional" upgraded versions of their most popular consumer cameras, with the same chassis shape but made from more durable materials and in a darker color. Extra features included XLR inputs and the ability to record in the higher-grade DVCAM format. The TRV900's pro equivalent was the DSR-PD100, released in 2000; the TRV950's was the DSR-PDX10.

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  1. J

    fitting TRVS and balancing rads

    Hi all, I could do with some tips regarding fitting TRVs. My customer wants them fitted to their rads. (Don't yet know if it is to replace existing TRVs or the first-time fitting). If the current lockshields are OK (leak free and nice looking) I thought I'd leave them be. To do the job...
  2. S

    install trvs

    how much would you charge to supply and fit 6trv's and 8 locks valves , drain down install chemical balance system at the end got a customer i did work for and they asked me to price , then they text back saying they are getting 2 more quotes i quoted for Honeywells vtl 120 +sentinel +3H...
  3. B

    wosley builders/ peggler bulldog trvs

    builder supplied his own heating pack from wosley - have to admit the copper fittings were better fit then ones I have been using but the bulldog trvs by peggler were awful fitted 7 of which 5 almost stopped the flow to the rads when the stat was fitted to the valve ended up just putting the...
  4. A

    TRVs

    Does it make any difference whether a TRV goes on the flow or return. Got Honeywells' thanks
  5. L

    Automatic Bypass and trvs

    Hi all Im doing a boiler change fitting a Ideal Logic Combi 35. The room stat is in the hallway with door to living room, Iv fitted trvs on all rads as there isnt a rad in the hallway or landing. The manuf/ instructions say that a bypass comes built in as standard, but turning over the page...
  6. C

    TRVs

    Do TRVs go on the flow or the return? Which side of the rad is the flow and which is the return?
  7. A

    TRVs noisy

    Hi all System: Worcester Bosch 38CDi combi, 10 rads on two floors, all on same circuit, all with TRV except large towel rail in bathroom. System and boiler are new, in 28mm copper with 15mm branches to Stelrad Compact rads. The TRVs are Danfoss RAS-C2 combi. Question: When a few rads have got...
  8. L

    Radiator TRVs and Bleed Valves

    Hello all, Firstly let me apologise, I'm sure my questions below have been asked time and time again. * I understand the old type TRVs (uni-directional) had to be installed on the flow side of the radiator only, however the newer TRVs (bi-directional) can be installed on either the flow or...
  9. Riley

    Apologies dumb question re TRVs

    Been in the game for a little while and am about to fit my first old style cast iron rad on Monday (you know the proper old hospital hallway style). Can you still use TRVs with these effectively? Would appreciate some advice. Thank you
  10. B

    Sopac/Sonder TRVs??

    Does anyone know where i can get a sopac/sonder TRV head from?
  11. G

    TRVs

    Hi can any one recommend good TRVs and why are the expensive ones better than the cheap ones?
  12. E

    Repair Danfoss TRVs

    There is a big building with about 30 rads. Its the top floor TRVs that are playing up and sticking. I`ve got most going for now but need to change 14 of them. Its old steel pipe, so on this job I would rather attempt to repair TRVs than drain down and replace. They are old Danfoss TRVs, the...
  13. C

    Noisy boiler and TRVs

    Hello I had a new boiler installed (EcoTec pro 28) several months ago and new trv's on all radiators and am having a few problems. I'd had an old Elan boiler for 20 years so just getting used to the differences. I've always had knocking pipes and am used to that but the following are new. 1...
  14. J

    Fitting TRVs to an old sytem Help please !

    Hello fellow plumbers, I am really close to finishing my first year at college and my Brother in law has just bought an old house. On the survey it picked up it had no TRVs. I really fancy helping them out and trying to do the job as i feel it will be straight forward but just want to check...
  15. D

    Newbie questions about fitting TRVs and flow direction

    My gas burner central heating system is about 40 years old. Piping is gun barrel. I am thinking of fitting TRVs to several of the rads. Before I hire an expert to do the job I have a few questions please: (words like 'draining' and 'airlocks' suggest it is not a DIY job!!!) Forums tell me...
    • dalty
    • Thread
    • about danfoss direction directional fitting flow newbie questions these trvs
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  16. Bettyboo

    TRVs on dual fuel towel rails - can it be done?

    Dear Plumbers I am in the process of buying a new build, it has 3 bathrooms with undertile heating and chrome heated towel rails. Builder has said he is not prepared to put thermosats on the rails but I have asked if I pay for them will he fit them. He has said "the towel warmers are part of...
  17. D

    Noisy TRVs

    Hi First post here so I hope this is clear and in the right place! Yesterday I had my old radiator valves (TRV and non-TRV) replaced by a heating engineer with TRV's so now I only have TRV valves apart from on the towel radiator. Last night I was woken up by the vibrating noises coming from the...
  18. A

    Can old TRVs be fitted at either end of a rad if they have flow direction marked on?

    I have always assumed that if a TRV has a flow direction marked on they should be fitted with the flow in that direction. However I am now told they can be fitted on either end without affecting their performance or balancing the system with the caplock valve. Slightly confused, so the...
  19. Y

    Boiler Keeps cutting out when on Central Heating. Just changed TRVs

    Hi all, Please can you help me. I have moved into a house and so far just qualified for wet plumbing NVQ. I have a Glowworm Compact combi Boiler. It is quite old I reckon as it still has a manual ignition for when it goes out. I changed the Valves on the rad system and added an anti-lime...
    • YoungMarkC
    • Thread
    • boiler central central heating system changed cutting cutting out keeps oil trvs
    • Replies: 9
    • Forum: Plumbing Jobs | The Job-board
  20. T

    Help with my homework please - TRVs

    Evening all, I've decided to try recovering from England's crushing defeat this morning by doing some plumbing homework. I'm on my Central Heating unit and I need to know where NOT to put TRVs. I'm pretty sure the answer is on the radiator(s) where the room stat is located because the room stat...
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