Help reading the scale on my Heathkit IG-18 Signal Generator

[Sleet]

So, I have this Heathkit signal generator that I have been meaning to use in some trouble shooting. I have the original assembly and operation manual, but can't figure out how to interpret the meter readings for setting the amplitude for my test.

[g1]

You set the amplitude control for max. voltage the range can produce. It will be a multiple of 3 or 10. Then you use the appropriate scale (3 or 10) adjusting the decimal place as required.
So, for example, on the .3V range, you would read the top scale (3), and a '2' reading would be .2V

[Sleet]

You set the amplitude control for max. voltage the range can produce. It will be a multiple of 3 or 10. Then you use the appropriate scale (3 or 10) adjusting the decimal place as required.
So, for example, on the .3V range, you would read the top scale (3), and a '2' reading would be .2V

Thanks, G1. I didn't read the manual carefully. Do you have a sine wave frequency that you use when trouble shooting preamps?

[g1]

I've been using 400Hz forever, mostly I find it much less annoying than 1K.

[Enzo]

I tend to use 100Hz for the same reason. But way more than sine waves, I just use music - like from a CD player.

[nosaj]

I've been using 400Hz forever, mostly I find it much less annoying than 1K.

Juan had given me some reason to use 400hz but I don't remember what it was,

nosaj

[Leo_Gnardo]

I tend to use 100Hz for the same reason. But way more than sine waves, I just use music - like from a CD player.

100 Hz here too for larger amps. 200 Hz for smaller ones where 100 would challenge dinky output transformers. And with that in mind 500 Hz for Champs and Champ-like SE amps. All guitar amps get a guitar played thru them as a final test, bass for bass amps. This final test often reveals problems that don't show with single frequency or sweep sin wave tests.

And yes, these lower frequencies are a lot easier on the ears.

[SoulFetish]

I've been using 400Hz forever, mostly I find it much less annoying than 1K.

it certainly is if you have to listen to it (output transformer "singing" not withstanding). IkHz make mathematical sense as a mid band freq., but it is NOT what you'd consider mids if you listen to it.
Regardless, I still use it as a default for signal testing

[g1]

IkHz make mathematical sense as a mid band freq., but it is NOT what you'd consider mids if you listen to it.

I'd agree with 1K as midrange for Hi-fi or PA, but not for the guitar amp world. 440Hz is high E string fretted at 5th fret (standard pitch). So everything else is below that.