MS16 Calabration

  • Thread starter Thread starter ron-e-g
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If I understand you correctly. I should go by the manual for Input Level Cal., and Reproduce Cal., including Reproduce Frequency Response cal. as per manual. With the (exception) instead of using the +4 dBm I should adj. to a -10 dBm ?
 
yes that is the "1" that i mean. Yes follow the manual sequence. Yes with the -10 exception. Otherwise you need the XLR connections to do it.

How much did you pay for the W&F meter?
 
$2 thats two dollars!:D

To do the Input Cal. I need to use the generator?
 
Hey fgonza2,

thats exactly what the seller said!

OK so...dumb question # ( I lost count):facepalm: ! How do I read this RF generator dial? I can push any button on the Frequency selector and nothing changes in the volt meter, only the level knob will adj. the level of the meter. How do I know a 1kHz signal is being sent? Or any other.

Generator SANY0309.webp

RF dialSANY0310.webp

Wave dialSANY0311.webp

Did I mention...:confused:
 
1. Use the sine wave output, not square
2. The RMS meter will only show you the level, not the frequency
3. The keys below the left dial are the multiplier keys. So, for 1khz, put the dial in 10 and the multiplier in 100x
4. Check the signal with the scope and measure the period, (google how to do this) you basically measure the zero crossings and then calculate the frequency by doing 1/T
5. Don't use the right side of the generator (RF generator) that is for high frequency, no use for this application.
 
Thanks. I'm having trouble with the Math! The generator is set to 10 on shine dial. The multiplier is 100, the shine output (split) goes one to meter, and one to scope. The meter reads -12. I have the scope set to 2ms per div. One cycle = 8.75 div. What's that? :eek:
 
the scope is enough. If you go through the training link, you should be able to learn it. What questions you have ?
 
How to calculate the wavelength. The instruction you linked seems to stop at the point of explaining the process of the math involved. I just want to be sure the generator is sending a proper 1kHz signal before I go through and set all the channels of my recorder.
 
the link that i sent you, explains how to calculate the period and the frequency. It even has a quiz on it at the end and shows you how to calculate it properly. The wavelength in this case, you can consider it to be the same as the period. So don't get confused by terms. The scope will give you the period not the frequency, measured by counting the horizontal squares from point A to point B, being that the period that it takes for the wave to repeat its shape. A sine wave it will be two zero crossings. Then you take the number of squares, multiply it for the scope time scale (the know in ms or us) and then take the inverse of that. f=1/T that will be your frequency.

A frequency counter is ok, but you need to learn some of these basic concepts, buying equipment more and more will take money and in the end you need to understand these things anyway, there is a bunch of online resources that can help you on how to use these tools. I just looked it up and there are also youtube videos explaining how to use a scope, how to measure period, etc.
 
The video I linked stop advancing at a early stage I guess. It had no more advance arrows to proceed to those things you mention. I have no advanced math skills so when you say Inverse the time I don't understand. I have learned to measure the time on the scope as per one of those youtube videos.It came to 8.75 ms. But in the video the guy goes into a math calculation without explaining the whys. I think I understand 1 over time f=1/t but that means nothing to me at this point. What do I do with the knowledge that the wavelength is showing 8.75 ms? Sorry this is confusing to me at this point. I just want to calibrate a gosh-darn recorder not figure out the theory of relativity!;)
 
is the red inner knob on the scopes timebase fully ckockwise (to the click)?

are there any calibration stickers on the scope and generator?
 
Yes scope volt/div is clicked right. I took the sec/div off just past the cal. indent it seemed to stabilize a little better.

No no stickers.
 
put it back in cal and leave them there.

play with the trigger level to improve stability.

then put the gen right on the 10 mark and report back
 
Spent the last couple of hours trying to upload a video I shot. Thought it might be easier to see.
But no dice! can't figure that out either!!!
Guess I have to host it somewhere to get a URL. Tried youtube but it requires me to create a channel first. When I try a window opens saying "working"..forever!


Ron
 
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