请教关于PSKey ANA_FTRIM问题
来源: 评论:0 点击:
第一次做蓝牙测试,标准的测试是能够通过,但客户有一个校准的不是很理解,内容如下
Xtal alignment
Purpose:
Compensate the initial frequency tolerance of the Xtal to provide sufficient
frequency accuracy.
Precondition: Connect battery simulator to Bat_P (TP J14) and Bat_N (TP J15)
terminal and apply 3.6V to DUT.
Procedure:
1. Connect Bluetooth test set to RF_Pad and RF_GND
2. Activate continuous TX mode of the DUT via SPI. Command:
TestSetContinuousTxMode(ULONG ulDevID, ULONG ulFrequency, ULONG ulIntPa,
ULONG ulExtPa, LONG lModulat ion) [1]
3. Measure frequency of the RF signal and align the Xtal frequency until the RF
signal frequency is in the target window. Start with trim value 31 (0...63), Start trim
RF frequency = 2441MHz +/-300kHz.Final RF Limit:2441 MHz+/- 2441 Hz
4. Write final value to PSKey ANA_FTRIM (hex 01F6) (write decimal value, range:
0 ... 63 )
5. Power cycle the DUT
这个改变PSKey ANA_FTRIM,后面是看什么测试标准的Initial Carrier的值吗?但是Initial Carrier好像没什么变化,请教这个应该是怎么校准的。
Xtal alignment
Purpose:
Compensate the initial frequency tolerance of the Xtal to provide sufficient
frequency accuracy.
Precondition: Connect battery simulator to Bat_P (TP J14) and Bat_N (TP J15)
terminal and apply 3.6V to DUT.
Procedure:
1. Connect Bluetooth test set to RF_Pad and RF_GND
2. Activate continuous TX mode of the DUT via SPI. Command:
TestSetContinuousTxMode(ULONG ulDevID, ULONG ulFrequency, ULONG ulIntPa,
ULONG ulExtPa, LONG lModulat ion) [1]
3. Measure frequency of the RF signal and align the Xtal frequency until the RF
signal frequency is in the target window. Start with trim value 31 (0...63), Start trim
RF frequency = 2441MHz +/-300kHz.Final RF Limit:2441 MHz+/- 2441 Hz
4. Write final value to PSKey ANA_FTRIM (hex 01F6) (write decimal value, range:
0 ... 63 )
5. Power cycle the DUT
这个改变PSKey ANA_FTRIM,后面是看什么测试标准的Initial Carrier的值吗?但是Initial Carrier好像没什么变化,请教这个应该是怎么校准的。
评论排行
- ·HFSS天线设计入门中文视频教程(1)
- ·CST2013破解文件,和谐万岁(1)
- ·关于打不开ADS帮助文档(1)
- ·基于左手介质的小型微带天线(1)
- ·HFSS10中仿真出现的错误(1)
- ·HFSS仿真螺旋天线模型的脚本程序(1)
- ·HFSS能仿真线圈天线吗?(1)
- ·Momentum中无法设置Substrate?(1)
- ·大家ADS2008中PIN二极管如何设定啊(1)
- ·请教ADS中的MSub个参数的意思(1)
- ·HFSS中怎么设置一个平面波激励啊(1)
- ·Hfss局部加密网格(1)
- ·HFSS使用心得(1)
- ·HFSS设计微带发夹型滤波器,求耦合系数请教(1)
- ·Microstrip Antenna Technology (Ke...(0)
- ·跟大家分享个宽频带90度功分移相网络(0)
- ·求教ADS中倍频器与频率源设置(0)
- ·30多个ADS视频教程在线观看(0)
- ·微波射频电路仿真100例(0)
- ·射频功率放大器设计资料(0)