Okay, thanks to
brucek... we have new correction values for the newer analog and the newer digital meters. The old analog meter correction values will not change, however, what model RS Meter you have will determine which correction values you will need.
For the record... from meter to meter of the same model, the measurements are extremely close. brucek took the average of the two meter responses (the average of the two new analog meters and the average of the two new digital meters) and developed corrections values that would correct to an average of the meters. This should keep us very close to the same corrections from meter to meter.
Unfortunately if you have been using the newrs.cal file on one of the newer analgo or digtal meters then your response is NOT correct and you will need to obtain the latest .cal file from the
Downloads page.
Below are graphs of what the correction values will look like when you load the appropriate .cal file into REW.
New Analog Model #33-4050 = newrsanalog.cal
-----
New Digital Model #33-2055 = newrsdigital.cal
-----
Older Analog Model #33-2050 = oldrsanalog.cal (no change... only the .cal file name changed from newrs.cal to oldrsanalog.cal)
It is apparent from these tests that the newer meters are definitely much more accurate than the older meter.