4G耦合工具使用说明 - 图文 下载本文

3.2各制式的测试设定及判定标准在CFG文件中修改,详细说明如下:

3.2.1 2G的测试设定及门限修改:

频段选择:

在CFG文件中的如下位置下修改,将NSFT平bank的值设置为测试的频段标识(16进制)之和。

若只测试GSM900/DCS1800,则bank的值应为0X0C。 [NSFT Common] NSFT_bank = 0x04 ; GSM450 0x01

; GSM850 0x02 ; GSM900 0x04 ; DCS1800 0x08 ; PCS1900 0x10

测试信道的设置:

同样在[NSFT Common]进行设置,在各频段中加入要测试的信道,并以”,”连接。 (在我们提供的参考文件中,每个频段只测一个信道) TCH_ARFCN_GSM850 = 190, TCH_ARFCN_GSM900 = 1,62,124 TCH_ARFCN_DCS1800 = 698, TCH_ARFCN_PCS1900 = 700, 功率等级的设置:

在上图示位置设置测试信道的数量及对应的功率等级,建议只测试中间信道的最大功率。

判定门限设定:

对应功率等级的上下限设定如下图。 [NSFT CHECK]

GSM850_MAX_P = 6.0, 8.0,10.0,12.0,14.0,16.0,18.0,20.0,22.0,24.0,26.0,28.0,30.0,31.5,33.2, GSM850_MIN_P = 4.0, 6.0, 8.0,10.0,12.0,14.0,16.0,18.0,20.0,22.0,24.0,26.0,28.0,29.5,31.2, GSM900_MAX_P = 6.0, 8.0,10.0,12.0,14.0,16.0,18.0,20.0,22.0,24.0,26.0,28.0,30.0,31.5,34.0, GSM900_MIN_P = 4.0, 6.0, 8.0,10.0,12.0,14.0,16.0,18.0,20.0,22.0,24.0,26.0,28.0,29.5,30.0, DCS1800_MAX_P = 2.0, 3.3, 5.1, 7.0, 9.0,11.0,13.0,15.0,17.0,19.0,21.0,23.0,25.0,27.0,28.5,31, DCS1800_MIN_P = -1.0, 1.3, 3.1, 5.0, 7.0,10.0,11.0,13.0,15.0,17.0,19.0,21.0,23.0,25.0,26.5,28.2, PCS1900_MAX_P = 2.0, 3.3, 5.1, 7.0, 9.0,11.0,13.0,15.0,17.0,19.0,21.0,23.0,25.0,27.0,28.5,31, PCS1900_MIN_P = -1.0, 1.3, 3.1, 5.0, 7.0,10.0,11.0,13.0,15.0,17.0,19.0,21.0,23.0,25.0,26.5,28.2,

3.2.2 3G的测试设定及门限修改:

W及LTE的综测项是以Test case来实现的,以W2100 中间信道为例,说明如下: [WCDMA NSFT Test Case_1]

Band Indicator = 0

Uplink Channel = 9750;;;设置上行信道 Downlink Channel = 10700;;设置下行信道 Cable Loss Input (dB) = 0;;;

Cable Loss Output (dB) = 0;;与仪器设定的cable loss之间的偏移,默认为0。

Max Power Average High (dBm) = 24.0

Max Power Average Low (dBm) = 19.0;;;功率门限 Frequency Error Peak (Hz) = 195.0 EVM RMS Average (%) = 17.5 IQ OriginOffset (dB) = -25.0 ACLR 5M (dB) = -33.0 ACLR 10M (dB) = -43.0 SEM1 Margin (dB) = 3 SEM2 Margin (dB) = 3 SEM3 Margin (dB) = 3 SEM4 Margin (dB) = 3

Min Power Average High (dBm) = -50 BER Level (dBm) = -100.0 BER Limit (%) = 0.1

Max Power Peak High = 24.0 Max Power Peak Low = 19.0 EVM Peak Max = 17.5 EVM RMS Max = 17.5 IQ Imbalance = -15.0 OBW MAX = 5.0

3.2.3 LTE的测试设定及门限修改:

LTE的测试项与W类似,MTK提供的默认文件会测试18,20,23三种功率,我司修改为只测试最大功率。

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;;;LTE band1 Mid Channel;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

[LTE NSFT Test Case_1]

TRX Power Measurement Operation = 0 MCS Mode = 4

BAND Indicator = BAND1

Downlink Frequency(100Khz) = 21400;;;下行频点 Downlink Power (dBm) = -50, BER Test Bit Map = 1,1,1,1,1, RSRP Test Bit Map = 1,1,1,1,1, RSRQ Test Bit Map = 1,1,1,1,1, RSSI Test Bit Map = 1,1,1,1,1,

Uplink Frequency(100Khz) = 19500;上行频点

Uplink Power (dBm) = 23;;;最大功率测试 ;Uplink Power (dBm) = 18,20,23 RB offset = 0,0,0,0,0,0,0,0

RB Length = 25,25,25,25,25,25,25,25 Tx Power Test Bit Map = 1,1,1,1,1,1,1,1 EVM Test Bit Map = 0,0,0,0,0,0,0,0 ACLR Test Bit Map = 0,0,0,0,0,0,0,0 SEM Test Bit Map = 0,0,0,0,0,0,0,0 Flatness Test Bit Map = 0,0,0,0,0,0,0,0 Gain Error Test Bit Map = 0,0,0,0,0,0,0,0 Phase Error Test Bit Map = 0,0,0,0,0,0,0,0

另外LTE的功率判定没有在单独的test case下,而是放在[LTE NSFT Common Settings]目录下,建议按照我司的设定(+/-3.5dB)进行。