MAnual for National VP9690A Noise Meter

We are looking for an Instruction Manual of National VP-9690A noise
Meter. We need to know the specs and schematic diagram. Thanks

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Relevant Pages

  • Re: Ammeter internal current draw
    ... The input impedance of your ICL7107-based digital panel meter ... The ICL7107 is very good at cancelling out 60Hz noise, ... If you've got a longer wiring length from the shunt ... yourself some protection for your DPM input. ...
    (sci.electronics.basics)
  • Re: Hey...back to TUBES ! :o) 6V6 - 6L6 help please
    ... My main concern is in regard to the ever present noise inherant in this ... a circuit designed for 6V6s with a max operating voltage closer to 350. ... Specs show the old 6v6s to have max. values in the neighbourhood of 350 ... volts for both the plate and the screen grid in class AB whereas ...
    (alt.guitar.amps)
  • Re: Bit off topic: - Electricity meters
    ... appliances, I can still hear this noise on the radio, it is very strong ... It may be coming from outside the house, the meter and phone line ... noise may be killing your BB s/n ratio. ...
    (uk.telecom.broadband)
  • Re: Radio Shack SPL meter ok to estimate acoustic listening room loudness?
    ... banjo) is played through a sound system. ... The analog Radio Shack meter is very good for the price. ... Another tool many of us working with sound should consider is a Noise ... Do be aware that noise regs are based on industrial noise which is more damaging ...
    (rec.audio.pro)
  • Re: Is S.E.D actually sci.electronics.DUMMIES ??
    ... Plus some interesting things happens when the eye is averaging pixels out making locally correlated noise obvious well below the LSB level. ... I designed PSUs that guarantee the specs, but as they've been burned before by someone else' 'design' they now want to test the whole board ahead, before integration with the CCDs. ...
    (sci.electronics.design)