深圳市麒鑫通达科技有限公司 SHENZHEN QXTD Technology Co.
Test Details test items 1. S Parameter 1. S Parameter 1. (RL) 2. (VSWR) 2. coupled power test 2. coupled power test 1.Max TRP（power） 2.
Debug version records VER.
Handset and PCB Version 4
Match circuit diagram (main signal source) Main signal source pin matching: the original 12nH of the digit number C901 is replaced with 15nH, and the match of other positions remains unchanged 。 5
Match the circuit diagram (tuning the elastic pin) tuner logic Connector Bands GSM:B2/B3/8 RF1 (L925 0R） WCDMA:B1/B2/B8 LTE： B1/B2/B3/B4/B8 RF2 (L926 3.9nH） RF3 (L927 NC） Tuned pinfoot match: 1. Position number L927 original 3nH cancel patch, L927 position number blank patch. 2, L913 increases 68nH inductance, and C913 increases 39pf capacitance. 3. R901 adds 12nH inductance (tentative match here and may be adjusted later). The R902 uses the 0 Ω connection tuning switch.
Match circuit diagram (main signal source) Model Mark A5L 2G&3G&4G GSM850 GSM900 DCS1800 Channel L M H L M H L M H TRP(dBm) 27.2 27.3 27.6 28.5 28.6 28.2 24.5 24.3 24.2 TIS(dBm) -102.9 -102.6 -102.3 -102.1 -102.0 -101.6 -104.6 -104.5 -104.3 A5L PCS1900 WCDMA850 WCDMA900 Channel L M H L M H L M H TRP(dBm) 25.2 25.6 25.6 18.8 19.2 19.3 19.1 19.2 18.1 TIS(dBm) -103.8 -103.5 -103.3 -103.6 -103.3 -103.1 -103.0 -102.8 -102.
Match circuit diagram (main signal source) Model Mark A5L 4G FDD-B28A FDD-B28B Channel L M H L M H TRP(dBm) 14.5 15.5 16.1 16.1 16.4 16.8 TIS(dBm) -90.1 -90.2 -90.5 -90.6 -90.5 -90.
Antenna passive gain efficiency test Band Max Gain Efficiency GSM850 -0.13 33% GSM900 -0.05 34% DCS1800 0.03 36% PCS1900 0.06 37% WCDMA2100 0.52 39% WCDMA1900 0.06 37% WCDMA850 -0.13 33% WCDMA900 -0.05 34% BAND 1 0.52 39% BAND 2 0.06 37% BAND 3 0.03 36% BAND 4 0.03 36% BAND 5 -0.13 33% BAND 8 -0.05 34% BAND 12 -0.31 27% BAND 28A -0.31 27% BAND 28B -0.26 28% BT 0.
Antenna passive field intensity map GSM850 GSM900 DCS1800 10
Antenna passive field intensity map PCS1900 WCDMA 2100 WCDMA 1900 11
Antenna passive field intensity map WCDMA 850 WCDMA 900 FDD-B1 12
Antenna passive field intensity map FDD-B2 FDD-B3 FDD-B4 13
Antenna passive field intensity map FDD-B5 FDD-B8 FDD-B12 14
Antenna passive field intensity map FDD-B28A FDD-B28B BT 15
Antenna appearance 16
BT Antenna 17
BT/FM TEST Total search number With good quality sound Channel No.
Environmental treatment 1. As shown in the picture, a large conductive cloth is attached on the upper end of the main board. Note: The top of the conductive cloth should be extended, and the screen wiring should be screened. 2. Put a small conductive fabric on the bottom to connect with the copper exposed area of the main board.
