HI ALL EXPERTS, i have recorded 1 khz tone signal on cd using nero and tone generator software. during playback[on pc] sgnal is showing 100 % [0db] level
now i want to use this cd in my dvd player as a source signal for amps[ for
repairing purpose] but problem is that, i dont know the output level of my dvd player. i dont have any oscilloscope. so is there any idea to measure output level ? thanks in advance,sorry for bad english.
now i want to use this cd in my dvd player as a source signal for amps[ for
repairing purpose] but problem is that, i dont know the output level of my dvd player. i dont have any oscilloscope. so is there any idea to measure output level ? thanks in advance,sorry for bad english.
An audio frequency (1kHz in this case) capable voltmeter is what you need. Most DVMs can do this (though their accuracies may vary), which should be adequate for repairs. But I'm not an expert.
I'd like to know what <$200 DVM will read 25 mvac on music. The Sears 82140 won't do it and and Sears 82028 won't do it either. They work okay at 60 hz, only. The fluke factory meter won't, either. Three years I've been asking this question on organforum, the answer is so obvious nobody bothers to type it in. I use a Simpson 266 VOM with a 2 VAC scale, but their products were deemed so useless they went bankrupt in the eighties.
I've had a Simpson 260 for over forty years. 🙂
Most of the cheaper DMM's will not read AC voltage (reliably) above 1khz. You'd have to check the specifications closely to find a $200 DMM meter that might fit the bill.
I think if you measured the output level of a dozen different CD/DVD players, you'd probably find the average about 2.2VRMS.
Cheers,
Dave.
Most of the cheaper DMM's will not read AC voltage (reliably) above 1khz. You'd have to check the specifications closely to find a $200 DMM meter that might fit the bill.
I think if you measured the output level of a dozen different CD/DVD players, you'd probably find the average about 2.2VRMS.
Cheers,
Dave.
Most DVD players have very good frequency response. So if you record a 60 Hz tone at the same volume level, you could measure this tone with almost any meter and have a reasonable answer.
What's a Fluke factory meter? I use Fluke 8060A meters (own 2) and have been calibrating audio levels with them for 25+ years. You've heard my audio and seen my video work on commercial DVDs and network TV. The Fluke meter is flat to 100 KHz and in dB mode can read to just under +8 dB resolving to 0.01 dB. My target is to get within 0.05 dB or less. Now that we're in the digital world this is becoming moot.
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Hi to all, many thanks for your responses. i checked line out of pc with headphone then i checked o/p of dvd player with same headphone .i think output level of my dvd player is aprox. 50 % than pc. now,i am thinking to convert line o/p signal [100 Hz tone] to DC,using diode bridge and proper capacitor. if o/p level is 1V rms then rectified DC will show
1.41 V, which is accurately readable on DMM. do u think this trick is possible? if yes, which
is best diode, capacitor to use?
1.41 V, which is accurately readable on DMM. do u think this trick is possible? if yes, which
is best diode, capacitor to use?
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