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Why do my N1911A and N1912A Power Meters display a message that says the analogue scale is over the range?

The N1911A and N1912A Power Meters display a message saying that the analogue scale is over the range because the scale is defaulted to a range between -70 and 20dBm. To avoid this message, you should set the scale range according to your application to ensure that it will always be within range.