3M 965DPS instruction manual Longitudinal Balance, Wideband Loss

Longitudinal Balance

Use this function to measure the active Longitudinal Balance on the pair. The 965DSP automatically goes off-hook to measure Longitudinal Balance.

Press the [Tab] key to go to Loss. Press the [Left] arrow key to go to Noise. Press [Enter] to return to the dB menu. Press [Up] and [Down] to adjust the speaker volume. Use the blue numeric keys to send DTMF tones.

Wideband Loss

Use this function to measure the loss of a far-end tone between 20 kHz and 1200 kHz. You must use a separate instrument to generate the tone at the far-end.

The screen displays the loss in dB, and the frequency of the tone in kilohertz. Press [Enter] to return to the dB menu.

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