UKU-VEXCAM-TX1VEXPLORER (VIDEO CAM)

2.4G Cam for VEX plorer Operation Description (TX & RX) OVER VIEW: The production is a system for video and audio transceiver system, the Tx Unit include the image sensor to got image information and microphone to got sound, image sensor output standard NTSC video signal, the audio signal from the microphone was amplified, then the audio and the video signal were output to the 2.4G module to modulation, then transmit by antenna . The antenna of RX unit was received the signal, the RX module was demodulation the RF signal, output the AV signal. Description: TX: U2, C1, C2, C3, C4 for power supply circuit. R1, R17, R18, LM358-B ext for audio amplify, Q1, Lm358-A, Led for power ind, U1 and the exit parts for coms image sensor, it output Video signal. The U3 module modulation the AV signal and amplify the RF signal,. RX Q3, U2, C1, C2, C3, C4 for power supply circuit, Q4, Q2,Q1, Led1 for battery ind. U1 for RF receiver and AV demodulation.

2007.3.15 A1.1 W.J.H DATE: RVE: G950 TXTITLE: DRAWING BY: APPROVED BY: LUNG CHEONG C1 1000uF C2 104 IN GND OUT U2 XC6203P C3 104 C4 100uF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 U3 2.4G-TXMOCULE ZNT1 1 2 3 4 5 S2 SW1P4T R5 1M C9 0.1u C12 33p C13 33p Y1 14.31818MHz 1 A G N D 2 A V D D 3 A B R T 4 B K L T 5 NC 6 VREQ 7 VRCHG 8 NC 9 NC 10 CVO 11 OVDD 1 2 E V D D 1 3 E G N D 1 4 S C C B _ E 1 5 V P X O / V F L P 1 6 X C L K 1 1 7 X C L K 2 1 8 D V D D 19 DGND 20 FSI 21 GAMMA 22 VHS/MIR 23 FODD/HGAIN 24 PWDN 25 FASTB 2 6 S I O _ C 2 7 S I O _ D 2 8 A W B 1 S U1 OV7930 R12 10k R13 10k C8 0.1u C7 0.1u R2 100 R3 10k R4 10k R6 10k R7 10k R11 10k R10 10k C10 0.1u S1 SW-1P2T BT1 Q1 2N3904 LED1 RED - + 6 5 7 LM358-B R18 100K R17 100K R15 1M R16 3.3K C15 105 R14 10K C5 68PF C11 104 R1 5.6K MIN1 - + 6 5 7 LM1-B R26 1.5M C6 105 R27 100k R23 100k R22 100k R21 10k R20 12K R19 68k R28 1k C14 103 R24 1k D2 1N5817 C16 105 D1 1N4148

Job No. J00113681 WF-EL-EMC-15 Edition 1 2006 April 12 Page of Bandwidth Plot Bandwidth 1 Bandwidth 2