We have had a 2205A calibrated. One element has raised a couple of questions. A 0.7746 V RMS sine wave was fed in at a range of frequencies. At the top end, the measured reading from the logger dropped off. At 75kHz it was 0.7196 V RMS, a drop of about 7%.
Is this what you would expect, or is the logger faulty?
Is this a sensible test to have run, and should any particular precautions have been made when running the test?