hensley@frith.egr.msu.edu (John Hensley) (03/15/90)
I've tried splitting the signal from my cable TV tuner so that I can get a picture on my 1084D, but for some reason all I get is a blank screen. I've checked it about a dozen times, making sure it's set to composite, the plug is in the right place, the F-plug is contacting the RCA adapter, etc., and still nothing. I know the video jack on the monitor works, because a VCR works fine, and I've tried two F-plug to RCA adapters. The splitter works OK because the TV runs fine from either output, from either cable. Any ideas would be appreciated, through e-mail if possible, of course. John
a418@mindlink.UUCP (Coniah Chuang) (03/15/90)
Is the signal from the tuner a composite video signal or is it RF? The 1084 monitor requires a composite video signal to work. Simply changing the physical shape of the connector (ie. F-plug to RCA) does not change the signal from RF to video. The video machine works because you used the video out of the machine rather than the RF out. Or, I could be wrong and you'd best ignore me. I'm in computers not TVs. -Coniah
bgriffin@mentor.com (Brian Griffin) (03/16/90)
In article <6946@cps3xx.UUCP> hensley@frith.egr.msu.edu (John Hensley) writes: > >I've tried splitting the signal from my cable TV tuner so that I can get a >picture on my 1084D, but for some reason all I get is a blank screen. I've >checked it about a dozen times, making sure it's set to composite, the plug >is in the right place, the F-plug is contacting the RCA adapter, etc., and >still nothing. The cable coming into your home has many channels of video modulated on RF carriers at different frequencies. The box the cable company gives you selects one of these many carrier frequencies (e.g. channel 13) and effectively removes the video/audio information from it and places it on a new carrier and sends that out to your TV set (typically channel 2 or 3). The TV set's tuner removes the video and audio from the carrier and then sends the video to the "monitor" section of the TV. Your monitor doesn't have a tuner section so it can't decode the information coming in from the cable. This is one reason why the cable has an F-plug and the monitor has an RCA plug. Note: you'd have the same problem if you connect the cable to the VIDEO IN jack on your VCR. > >I know the video jack on the monitor works, because a VCR works fine, and >I've tried two F-plug to RCA adapters. The splitter works OK because the >TV runs fine from either output, from either cable. > >Any ideas would be appreciated, through e-mail if possible, of course. Try running the cable to the CABLE or ANTENNA jack on your VCR then connect your VCR to your monitor. > >John I hope this helps __ /__) . __ /___)_/-,_/_(_(_/V/_ /
amiga@uhccux.uhcc.hawaii.edu (Boing) (03/20/90)
along similar lines: I've used my monitor with a vcr for tv viewing for a while now. is there a simple way/device that can do what the vcr does (separate the the audio and video coming in on the coax cable) without requiring the other vcr stuff? is it a complex circuit? -- // boing! boing! boing! boing! boing! boing! boing! boing! // \X/ \X/ uhccux amiga pd software | amiga@uhccux.uhcc.hawaii.edu | amiga@uhccux.bitnet "just another peon" | baron@uhccux.uhcc.hawaii.edu | baron@uhccux.bitnet
cmcmanis@stpeter.Sun.COM (Chuck McManis) (03/21/90)
In article <7019@uhccux.uhcc.hawaii.edu> amiga@uhccux.UUCP (Boing) writes: >along similar lines: > >I've used my monitor with a vcr for tv viewing for a while now. is there >a simple way/device that can do what the vcr does (separate the the audio >and video coming in on the coax cable) without requiring the other vcr >stuff? is it a complex circuit? It is called a TV tuner. It used to be really complicated but these days it is down to about 4 chips and some analog components. You could build one or you could buy a really cheap VCR (like $100) and get the same function (albeit in a somewhat larger package). Another alternative is the component TV tuners however these are generally targeted to the "high end" videophiles so they are expensive. --Chuck McManis uucp: {anywhere}!sun!cmcmanis BIX: cmcmanis Internet: cmcmanis@Eng.Sun.COM These opinions are my own and no one elses, but you knew that didn't you. "If it didn't have bones in it, it wouldn't be crunchy now would it?!"
zaphod@diku.dk (Ole D. M. Lennert) (03/22/90)
cmcmanis@stpeter.Sun.COM (Chuck McManis) writes: >In article <7019@uhccux.uhcc.hawaii.edu> amiga@uhccux.UUCP (Boing) writes: >>along similar lines: >> >>I've used my monitor with a vcr for tv viewing for a while now. is there >>a simple way/device that can do what the vcr does (separate the the audio >>and video coming in on the coax cable) without requiring the other vcr >>stuff? is it a complex circuit? >It is called a TV tuner. It used to be really complicated but these days >it is down to about 4 chips and some analog components. You could build >one or you could buy a really cheap VCR (like $100) and get the same >function (albeit in a somewhat larger package). Another alternative is the >component TV tuners however these are generally targeted to the "high end" >videophiles so they are expensive. I don't know if it is available in the US, but I have a Philips TV tuner which costs Dkr 1200, approx. $150. If you are interested in the type designation of this tuner, send me mail. >--Chuck McManis >uucp: {anywhere}!sun!cmcmanis BIX: cmcmanis Internet: cmcmanis@Eng.Sun.COM >These opinions are my own and no one elses, but you knew that didn't you. >"If it didn't have bones in it, it wouldn't be crunchy now would it?!" Ole Lennert Student at Institute of Datalogy, University of Copenhagen E-mail: zaphod@freja.diku.dk -- =============================================================================== Ole D. M. Lennert (zaphod@freja.diku.dk) "Though he did not know it, Rob McKenna was a Rain God."
jms@tardis.Tymnet.COM (Joe Smith) (03/22/90)
In article <6946@cps3xx.UUCP> hensley@frith.egr.msu.edu (John Hensley) writes: >I've tried splitting the signal from my cable TV tuner so that I can get a >picture on my 1084D, but for some reason all I get is a blank screen. >I've tried two F-plug to RCA adapters. The splitter works OK because the >TV runs fine from either output, from either cable. The cable TV converter is not a tuner. You need a tuner, such as your VCR. from cable channel VCR composite 1084 company +-----------+ 3 or 4 +-------+ video +---------+ ==>==>==>| converter |==>==>==>| tuner |-->-->-->| monitor | +-----------+ +-------+ +---------+ The input to the cable converter is channels 2 thru 6, A thru W, and 7 thru 13. Its output is an RF (radio frequency) signal on either channel 3 or channel 4. You have to have a tuner to convert this RF to a composite video signal. (The Sony KV1311 monitor has a built in tuner, the Commodore monitors don't.) So, unless you go out and buy a seperate tuner (such as from Radio Shack), you'll need to have your VCR in the circuit to watch TV on your 1084. -- Joe Smith (408)922-6220 | SMTP: jms@tardis.tymnet.com or jms@gemini.tymnet.com BT Tymnet Tech Services | UUCP: ...!{ames,pyramid}!oliveb!tymix!tardis!jms PO Box 49019, MS-C41 | PDP-10 support: My car's license plate is "POPJ P," San Jose, CA 95161-9019 | humorous dislaimer: "My Amiga speaks for me."
nfs1675@dsacg3.dsac.dla.mil ( Michael S Figg) (03/23/90)
In article <133172@sun.Eng.Sun.COM>, cmcmanis@stpeter.Sun.COM (Chuck McManis) writes: > In article <7019@uhccux.uhcc.hawaii.edu> amiga@uhccux.UUCP (Boing) writes: > >I've used my monitor with a vcr for tv viewing for a while now. is there > >a simple way/device that can do what the vcr does (separate the the audio > >and video coming in on the coax cable) without requiring the other vcr > >stuff? is it a complex circuit? > > It is called a TV tuner. It used to be really complicated but these days > it is down to about 4 chips and some analog components. You could build > one or you could buy a really cheap VCR (like $100) and get the same > function (albeit in a somewhat larger package). Another alternative is the > component TV tuners however these are generally targeted to the "high end" > videophiles so they are expensive. I've never had a need for a TV tuner because I have cable and a VCR (going into a 1080) but it seems like I heard of them being available occaisionally for about $50. You might check Radio Shack. Mike, -- "Could we be the bellwether | Michael Figg DSAC-FSD of major societal shifts?" | DLA Systems Automation Center - Columbus,Oh mfigg@dsacg2.dsac.dla.mil CIS: 73777,360
FelineGrace@cup.portal.com (Dana B Bourgeois) (03/23/90)
Talk to your neighborhood TV repair-person. Maybe a tuner from an old set that lost its picture tube is avialable. Maybe the tuner will be workable. Maybe it will be resonably priced. It's worth a shot. Or contact the local surplus electronics house and see if they carry any used Tuners. Or try the ads in the back of RAdio Electronics type of magazine. Dana Bourgeois @ Cup.Portal.Com