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B. GSM Freq. Comp. Calibration
- Purpose
This item contains the change in Tx power of 7 ARFCN (Absolute Radio Frequency Channel Number)
relative to a reference ARFCN (channel 49).
NOTE 7 ARFCN + 1 ref channel = 8 channels.
- Procedure Proposal
1. Load the highest DCS power as defined in the standard.
2. Measure frequency response of the phone across 8 different ARFCN.
3. The data structure for all Tx frequency-compensated NV items are laid out as in the following
example.
NV_GSM_TX_FREQ_COMP
-8,-2,0,3,5,5,-7,-6
NOTE The first data index will correspond to channel index 0 and so on until the last index is reached
for all channels. The data point for the reference channel will always be 0.
C. GSM RX Gain Range Calibration
- Purpose
This item specifies the RX gain from the antenna to the MSM for 8 frequencies in the GSM band.
- Procedure Proposal
1. Command the signal generator to output a signal level, Pin (recommended value is -65 dBm) at the
phone antenna port.
2. Command the signal generator to one of the 8 specified channels plus an offset of 33 kHz.
3. Command the phone to one of the 8 specified channels.
4. Command the phone to set up gain range 0 ( 1, 2, or 3 ).
5. Command the phone to retrieve RSSI. Let’s call this value Xrssi.
6. Calculate and record (in 1/16 dB units) the absolute gain from antenna to MDSP using the following
equation.
NV_GSM_RX_GAIN_RANGE_1_FREQ_COMP = 16*( 10Log(xrssi) - Pin)
7. Repeat steps above for the next ARFCN in the NV_GSM_CAL_ARFCN item.
8. The data structure for all Rx frequency-compensated NV items are laid out as in the following
example.
NV_GSM_RX_GAIN_RANGE_1_FREQ_COMP
2036,2039,2035,2039,2036,2026,2031,2037
NOTE The first data index will correspond to channel index 0 and so on until the last index is reached
for all channels. Rx frequency-compensated NV items are absolute measurement, not relative
measurement like Tx NV items.
7. CALIBRATION
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Содержание U8210
Страница 22: ...3 TECHNICAL BRIEF 23 Figure 3 2 1 1 RTR6250 IC Functional Block Diagram ...
Страница 37: ...3 TECHNICAL BRIEF 38 Figure 3 5 12 1 Bluetooth system architecture ...
Страница 110: ...4 TROUBLE SHOOTING 111 USB_D USB_D USB_VBUS X100 48M 48MHz ...
Страница 115: ...4 TROUBLE SHOOTING 116 LCD Control data flow ...
Страница 117: ...4 TROUBLE SHOOTING 118 LCD Control data flow ...
Страница 122: ...4 TROUBLE SHOOTING 123 TR400 ...
Страница 124: ...4 TROUBLE SHOOTING 125 FLASH_ON from Main Bíd PM6650 CN1 Flash LED ...
Страница 127: ...4 TROUBLE SHOOTING 128 FB503 CN500 FB502 CN2 CN1 ...
Страница 129: ...4 TROUBLE SHOOTING 130 C627 Head_set Output Pin 4 5 C626 CN304 R624 ...
Страница 131: ...4 TROUBLE SHOOTING 132 R649 CN300 CN2 CN1 U605 C633 R648 C634 R622 R623 ...
Страница 133: ...4 TROUBLE SHOOTING 134 R649 CN300 CN2 CN1 U605 C633 R648 C634 R622 R623 ...
Страница 135: ...4 TROUBLE SHOOTING 136 C627 Head_set Output Pin 4 5 C626 CN304 R624 ...
Страница 137: ...4 TROUBLE SHOOTING 138 R649 CN300 CN2 CN1 U605 C633 R648 C634 R622 R623 ...
Страница 139: ...4 TROUBLE SHOOTING 140 C627 Head_set Output Pin 4 5 C626 CN304 R624 ...
Страница 141: ...4 TROUBLE SHOOTING 142 MIC Contact C404 C401 ...
Страница 143: ...4 TROUBLE SHOOTING 144 C115 Head_Phone Input Pin 2 3 C102 CN304 R624 ...
Страница 146: ...4 TROUBLE SHOOTING 147 Receptacle 4 6V 4 6V ...
Страница 151: ...5 BLOCK DIAGRAM 152 Top Side ...
Страница 152: ...5 BLOCK DIAGRAM 153 Bottom Side ...
Страница 154: ...6 DOWNLOAD 155 It is ready for downloading ...
Страница 160: ...6 DOWNLOAD 161 6 Click on Download to download ...
Страница 165: ...6 DOWNLOAD 166 Downloading the Module image Finally Download has been complete ...
Страница 168: ...6 DOWNLOAD 169 When you meet the NV Restore error Connect to the phone ...
Страница 170: ...6 DOWNLOAD 171 Select the proper file and click on Restore Reading the NV file and restore NV ...
Страница 200: ... 201 9 PCB LAYOUT ...
Страница 201: ... 202 9 PCB LAYOUT ...
Страница 202: ... 203 9 PCB LAYOUT U8210 KEYPAD SPEY0032001 1 1 TOP ...
Страница 203: ... 204 9 PCB LAYOUT ...
Страница 204: ... 205 9 PCB LAYOUT ...
Страница 206: ... 207 ...
Страница 207: ... 208 ...