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7. CALIBRATION
- 183 -
F. RX Freq. Calibraion
- Purpose
This item contains 15 VGA gain offset values relative to a reference frequency. These values are
represented by an 8-bit signed number. The values are the change between the reference frequency
VGA gain offset value and the VGA gain offset value at the frequency of interest. These values, once
calibrated, ensure that the RSSI will align with received frequency.
- Procedure Proposal
1. Complete all the steps in previous section
2. Change the phone’s channel and the signal generator frequency to match that of the phone’s
c 685 kHz and read RSSI
If channel = reference channel, make
NV_WCDMA_VGA_GAIN_OFFSET_VS_FREQ[refChannelIndex] value = 0 Else
NV_WCDMA_VGA_GAIN_OFFSET_VS_FREQ[ChannelIndex] = RSSI[ChannelIndex] - theoretical
RSSI (i.e -200 for our case, refer to previous section to see how -200 was obtained)
NOTE Reference frequency will have a 0 value at index 7, assuming counting from 0. This will be
applied to every frequency compensated NV item in this document.
Recommended channels for calibration are:
Channel_index_0 = 9609, Channel_index_1 = 9628, Channel_index_2 = 9646,
Channel_index_3 = 9664, Channel_index_4 = 9685, Channel_index_5 = 9703,
Channel_index_6 = 9720, Channel_index_7 = 9739 (reference channel)
NOTE Reference channel is changeable, but ensure that its value is always on the 8th index for any
frequency compensated NV item.
G. RX LNA Calibration
- Purpose
This item contains the gain step for LNA state low (mid or high) gain to mid (or high) gain.
This value is represented by a 16-bit signed 2’s complement number in 1/12 dB unit.
- Procedure Proposal
1. Set WCDMA RX input power at a reference frequency to a value equal to
NV_WCDMA_LNA_RANGE_RISE_[i] value.
2. Set phone mode to WCDMA.
3. Set to the reference channel.
4. Call the FTM Command Get LNA Offset with index [i].
5. Store the return value as NV_WCDMA_LNA_RANGE_OFFSET_[i].
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 ...