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Loop test Input

terminal

Output

terminal

Path

gain

[dB]

(fixed)

Input

voltage

[mVp-

Output

voltage

[mVp-p]

Output

DC level

[V]

Output

current [mA]

External Mic to

External

Earpiece

HS_MIC &

GND

HS_EAR_L &

GND

-8.6 1000 367 1.2 NA

HS_EAR_R &

GND

External Mic to

Internal

Earpiece

HS_MIC &

GND

EarP & GND -10 1000 310 1.2 NA

EarN & GND

External Mic to

Internal

handsfree

XMICP and

GND

Pad J2101 8.5 920 2520 0 ~25mA

XMICN and

GND

Pad J2102

Internal Mic to

External

Earpiece

B2100 OUT

and GND

HSEAR P,

HSEAR N and

GND

22.7 100 1330 1.2

Measurement data

Earpiece signal

Figure 47 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected.

Integrated handsfree signal

RM-135

BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

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