Sound Pressure Level; Charging - LG U250 Service Manual

2. PERFORMANCE

2.7 Sound Pressure Level

No
1 Sending Loudness Rating (SLR)
2 Receiving Loudness Rating (RLR)
3 Side Tone Masking Rating (STMR)
4 Echo Loss (EL)
5 Idle Noise-Sending (INS)
6 Idle Noise-Receiving (INR)
7 Sending Loudness Rating (SLR)
8 Receiving Loudness Rating (RLR)
9 Side Tone Masking Rating (STMR)
10 Echo Loss (EL)
11 Idle Noise-Sending (INS)
12 Idle Noise-Receiving (INR)
TDMA Noise
-. GSM : Power Level : 5
DCS/PCS : Power Level : 0
(Cell Power : -90 ~ -105 dBm)
13
-. Acoustic (Max Vol.)
MS/Headset SLR : 8 ± 3dB
MS/Headset RLR : -15 ± 3dB/-12
(SLR/RLR : Mid-value setting)

2.8 Charging

• Charging Method : CC & CV (Constant Current and Constant Voltage)
• Maximum Charging Voltage : 4.2 V
• Maximum Charging Current : 700 mA
• Normal Battery Capacity : 950 mAh
• Charging Time : Max 3 hours (except for trickle charging time)
• Full charging indication current (charging icon stop current) : 80 mA
• Cut-off voltage : 3.20 V
Test Item
- 16 -
Specification
8 ±3 dB
Nor
Max
Min
MS
Min
Max
Nor Under -47 dBPA
Max Under -36 dBPA
Nor
Max
Min
Headset
Min
Max
Nor Under -45 dBPA
Max Under -40 dBPA
MS and
Max Under -62 dBm
Headset
-4 ± 3 dB
-15 ± 3 dB
17 dB
40 dB
-64 dBm0p
8±3dB
-1 ±3 dB
-12 ±3 dB
25 dB
40 dB
-55 dBm0p