Loop test
Input
terminal
Output
terminal
Path gain
[dB]
(fixed)
Input
voltage
[mVp-p]
Differential
output
voltage
[mVp-p]
Output DC
level [V]
Output
current
[mA]
Internal Mic
to External
Earpiece
IB2201
(DATA /
GND)
D+, D- and
GND
22.7
100
1360
1.2
NA
Measurement data
Figure 11 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected.
Figure 12 Differential output waveform of the Ext_in_IHF_out out loop measurement when speaker is connected.
Figure 13 Single-ended output waveform of the HP_in_Ext_out loop when microphone is connected.
RM-164
BB Troubleshooting and Manual Tuning Guide
Issue 1
COMPANY CONFIDENTIAL
Page 3 –29
Copyright © 2007 Nokia. All rights reserved.
Содержание RM-164
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