User Guide

Measurement data

Figure 12 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected.

If a special low-pass filter designed for measuring digital amplifiers is unavailable, the measurement must be performed with a

current probe and the input signal frequency must be 2kHz.

Figure 13 Differential output waveform of the Ext_in_IHF_out out loop measurement when speaker is connected.

RA-6

BB Troubleshooting and Tuning Guide

Issue 1 COMPANY CONFIDENTIAL Page 3 –55