[R-390] Yet another question... sigh...

[ToddRoberts2001 at aol.com]

In a message dated 9/17/2006 6:04:03 PM Eastern Standard Time, 
n4buq at knology.net writes:
(Trying to answer my own question)

The HP-200CD is supposed to put out 11.5V at full scale when across
600-ohms.  11.5V across 600-ohms yields 220mW.  This checks out on my
TS-585.  Based on that, 5V RMS (which I found out the AN/URM-127's output is
measured in) should yield about 42mW.

Should I leave the TS-585 in the circuit such that the 600-ohms load is
present and set the HP-200CD to get 42mW on the TS-585 to get the 5V
specified in the test?

Thanks!

Barry - N4BUQ

That sounds correct. It shouldn't hurt anything to monitor the HP-200CD 
output with the TS-185 to be sure you are getting the correct 5V RMS audio sinewave 
into the test point. It would be nice if you had something like a Boonton 92B 
or similar millivoltmeter to measure the HP-200CD output directly in volts or 
millivolts but as long as you correctly convert mW at 600 ohms into voltage 
RMS you should be fine. 73 Todd WD4NGG