蓝牙模块射频测试

Lange 发表于 2013-11-20 15:11:50

各位大侠, 请问蓝牙模块射频的测试必须在屏蔽房内进行吗? 我目前设计的模块采用8852测试, 模块和8852直接通过射频线连接, 不是在屏蔽房内进行,输出功率测试没有问题, 但是(BR, EDR-2M, EDR-3M)的灵敏度测不过, 最多也只能达到-65dbm. 现在不清楚问题在哪里发生. 测试CSR的demo板也是一样的结果.

bidezhi7777 发表于 2013-11-20 23:08:32

路过，学习中！！！

mupro 发表于 2013-11-21 08:21:30

楼主高端大气上档次呀

shubiao66 发表于 2013-11-21 08:27:10

http://www.52bluetooth.com/forum.php?mod=viewthread&tid=1901&page=1#pid15795
你参考这个设置文件试试：BTCONFIG =
{
--- HCI BCSP uart config
["8852_GPIB"] = 27,
["MODEL"] = "Btst40_Cal",
["HCI"] = 5, -- 6:SPI_USB 5:SPI_LPT
}

CALTRIMPARAMS =
{
--- Calibration parameter
["FREQ"] = 2441,
["INTPA"] = 63,
["EXTPA"] = 255,
["MODOFF"] = 0,
["MIN_TRIM"] = 0,
["MAX_TRIM"] = 63,
["MAX_FREQ_OFFSET"] = 1, --khz
["GATE_WIDTH"] = 3, --ms
["CHIPSET"] = 8645,
}

PWRSUPPLYDATA =
{
["PWR_GPIB"] = 8,
["VOLTAGE"] = 5.0,
["CURRENT"] = 2.0,
}

SYSCONFIG =
{
["8852_GPIB"] = 27,
["MODEL"] = "Btst40_RfTest",
["INQ_RESP"] = 1,
["INQ_TIMEOUT"] = 20,
["PATH_LOSS"] = 0.0,
}

SINGLESENDATA =
{
["HOPPING_TYPE"] = 2,
["LTXFREQ"] = 0,
["LRXFREQ"] = 78,
["MTXFREQ"] = 39,
["MRXFREQ"] = 0,
["HTXFREQ"] = 78,
["HRXFREQ"] = 0,
["NUMPKTS"] = 1000,
["TXPWR"] = -60.0,
["DIRTYTX"] = 1,
["BERLIM"] = 0.1,
["FERLIM"] = 100.0,
}

OUTPUTPWRDATA =
{
["HOPPING_TYPE"] = 1,
["HOPMODE"] = "DEFINED",
["LTXFREQ"] = 0,
["LRXFREQ"] = 78,
["MTXFREQ"] = 39,
["MRXFREQ"] = 0,
["HTXFREQ"] = 78,
["HRXFREQ"] = 0,
["PKTTYPE"] = "DH1",
["NUMPKTS"] = 10,
["TESTCTRL"] = "LOOPBACK",
["MAXPWRLIM"] = 20.0,
["MINPWRLIM"] = -6.0,
["PEAKPWRLIM"] = 23.0,
}

POWERCTRLDATA =
{
["PKTTYPE"] = "DH1",
["TESTCTRL"] = "LOOPBACK",
["NUMPKTS"] = 10,
["LTXFREQ"] = 0,
["LRXFREQ"] = 78,
["MTXFREQ"] = 39,
["MRXFREQ"] = 0,
["HTXFREQ"] = 78,
["HRXFREQ"] = 0,
["NUMCYC"] = 1,
["PWRDELAY"] = 0.1,
["MINPWR"] = -35.0,
["MAXPWRSTEPLIM"] = 8.0,
["MINPWRSTEPLIM"]=2.0,
}

INITCARRIERDATA =
{
["HOPMODE"] = "DEFINED",
["TESTCTRL"] = "LOOPBACK",
["HOPPING_TYPE"] = 1,
["LTXFREQ"] = 0,
["LRXFREQ"] = 78,
["MTXFREQ"] = 39,
["MRXFREQ"] = 0,
["HTXFREQ"] = 78,
["HRXFREQ"] = 0,
["NUMPKTS"] = 10,
["MAXPOSOFFLIM"] = 75,
["MAXNEGOFFLIM"] = 75,
}

MODINDEXDATA =
{
["PKTTYPE"] = "DH1",
["TESTCTRL"] = "LOOPBACK",
["LTXFREQ"] = 0,
["LRXFREQ"] = 78,
["MTXFREQ"] = 39,
["MRXFREQ"] = 0,
["HTXFREQ"] = 78,
["HRXFREQ"] = 0,
["NUMPKTS"] = 10,
["F1AVGMIN"] = 140,
["F1AVGMAX"] = 175,
["F2MAXLIM"] = 115,
["F1F2MAX"] = 0.8,
}

MULTISLOTSENDATA =
{
["HOPPING_TYPE"] = 2,
["LTXFREQ"] = 0,
["LRXFREQ"] = 78,
["MTXFREQ"] = 39,
["MRXFREQ"] = 0,
["HTXFREQ"] = 78,
["HRXFREQ"] = 0,
["NUMPKTS"] = 590,
["TXPWR"] = -70.0,
["DIRTYTX"] = 1,
["BERLIM"] = 0.1,
["FERLIM"] = 100.0,
}

INPUTPOWERDATA =
{
["PKTCOUNT"] = 1,
["LTXFREQ"] = 0,
["LRXFREQ"] = 78,
["MTXFREQ"] = 39,
["MRXFREQ"] = 0,
["HTXFREQ"] = 78,
["HRXFREQ"] = 0,
["NUMPKTS"] = 590,
["TXPWR"] = -20.0,
["BERLIM"] = 0.1,
["FERLIM"] = 100.0,
}

CARRIERDRIFTDATA =
{
["HOPMODE"] = "DEFINED",
["TESTCTRL"] = "LOOPBACK",
["HOPPING_TYPE"] = 1,
["LTXFREQ"] = 0,
["LRXFREQ"] = 78,
["MTXFREQ"] = 39,
["MRXFREQ"] = 0,
["HTXFREQ"] = 78,
["HRXFREQ"] = 0,
["NUMPKTS"] = 10,
["PKTSIZE_ONESLOT"] = 1,
["PKTSIZE_THREESLOT"] = 1,
["PKTSIZE_FIVESLOT"] = 1,
["DFTRATE"] = 20,
["DFT1LIM"] = 25,
["DFT3LIM"] = 40,
["DFT5LIM"] = 40,
}

DOWNLOADDATA =
{
["BIN_FILE"] = "B04_dump.psr",
["TRANSPORT"] = 5, -- 6:SPI_USB 5:SPI_LPT
["MODEL"] = "Btst40_download",
}

BDADDRESSDATA =
{
["MAC_FILE"] = "setup/bt.txt",
["TRANSPORT"] = 5, -- 6:SPI_USB 5:SPI_LPT
["MODEL"] = "Btst40_BDaddress",
}

shubiao66 发表于 2013-11-21 08:28:23

本帖最后由 shubiao66 于 2013-11-22 21:27 编辑

还有就是你的RF线的衰减太大 RF探针没有接地等情况！

Lange 发表于 2013-11-21 08:53:51

RF线的"想衰减太大"太大指的是什么值呢? 就是射频线的衰减太大的意思吗?

dragon20100708 发表于 2013-11-21 08:56:54

好好学习，天天向上

Lange 发表于 2013-11-21 09:02:16

RF线的"想衰减太大"太大指的是什么值呢? 就是射频线的衰减太大的意思吗? 但是发射功率测试正常啊, 不是说射频线的衰减对于接收和发射是相同效果的吗? 看结果不是这样, 对发射的衰减小, 对接收的衰减大. 我的接法是射频线直接焊接在模组的RF输出端, 并接好模组的地, 另一端通过射频头连接到8852

ericlau73 发表于 2013-11-21 09:23:19

什么人，解释不完整，看得糊涂

horsema 发表于 2013-11-21 09:26:41

ddddddddddddddddddddd

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蓝牙模块射频测试