Loop test Input
terminal
Output
terminal
Path gain
[dB]
(fixed)
Input
voltage
[mVp-p]
Outout
voltage
[mVp-p]
Output DC
level [V]
Output
current
[mA]
Digital
Mic to
External
Earpiece
Acoustica
l input,
1KHz sine
wave
HS_EAR_L
& GND
NA 94 dB SPL 100 NA
Measurement data
Earpiece signal
Figure 14 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected
Integrated handsfree signal
Figure 15 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
RM-484; RM-485; RM-486
BB Troubleshooting
Issue 1 COMPANY CONFIDENTIAL Page 3 –41
Copyright © 2009 Nokia. All rights reserved.
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