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

[Barry]

(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

----- Original Message -----
From: "Barry" <n4buq at knology.net>
To: "R-390-List" <R-390 at mailman.qth.net>
Sent: Sunday, September 17, 2006 3:02 PM
Subject: [R-390] Yet another question... sigh...


> Started checking the R390A from the audio deck "up".  Referring to the Y2K
> Rev 2 manual, table 5-5, step 6 (on page 5-27), it gives voltages to set
the
> An/URM-127 to look for 0dB on the Line Level meter.  I have an HP-200CD
> whose output isn't calibrated in volts.
>
> Are the voltages shown P-P, RMS, or what?  Should I be loading the HP-200
> into a 600-ohm resistor for these measurements?  I have a TS-585 but it's
> calibrated in mW and dB so not sure how to correlate that to the table's
> values because I don't know if they're RMS or P-P.
>
> Any help is appreciated.
>
> Thanks,
>
> Barry - N4BUQ
>
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