"JB" wrote in message
...
Many so called techs don't even know how to use them. You might find
out in a class. They are most used in verifying specifications. You
don't know how many experts have been unable to show me.

There should be no need for adjustment of the meter itself unless you
want to screw it up. If you don't know how to use it there won't be
an indication.

General instructions are available in Publication EIA/TIA-204-D

Jim, ac6tk

wrote in message
ups.com...
I just got a SINAD Meter at a flea market; as usual no manual.

It's a model 1410 by GAW Co., Inc.



Unlike some of the "automatic" sinad meters such as the Helper sinadder the
1410 has to be adjusted by the user. Set the signal generator to a very
high output (enough to insusre a full dead quiting signal on a FM receiver)
.. Then crank in about 4 KC of deviation of a 1 khz tone (assuming a 5 kc
receiver) , The Tuning and Balance are adjusted for the best null, meter to
the left or 0 side. The signal generator is then lowered into the low
microvolt area tuil the meter reads -12 on the red scale if 12 dv is the
desired sinad point. You then read off the scale on the generator to find
the 12 db sinad point.