User Guide

Figure 42 Single-ended output waveform of the Ext_in_IHF_out out loop measurement when speaker is connected

(measured at speaker pads). No filter is used.

External output from AV

Figure 43 Single-ended output waveform of the Ext_in_Ext_out loop.

External output from AV (acoustic input)

Figure 44 Single-ended output waveform of the Digital_stereo_microphone_in_Ext_out loop.

RM-176

BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

Issue 1 COMPANY CONFIDENTIAL Page 6 –41