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Company Confidential 1 HEADLINE C115 RF Trouble Shooting Present by Allan_Hu.

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Presentation on theme: "Company Confidential 1 HEADLINE C115 RF Trouble Shooting Present by Allan_Hu."— Presentation transcript:

1 Company Confidential 1 HEADLINE C115 RF Trouble Shooting Present by Allan_Hu

2 Company Confidential 2 Agenda COMPAL COMMUNICATIONS, INC. RF Tranceiver Block Diagram Tx Path (I/Q) Tx Path(LO) Tx path(PA) Tx path(TR switch)

3 Company Confidential 3 COMPAL COMMUNICATIONS, INC. RF Tranceiver Block Diagram PLL Transmit Path Receiver Path

4 Company Confidential 4 COMPAL COMMUNICATIONS, INC. Tx Path (I/Q) in GSM Band 1.Set HP8960 or HP8922,Operating mode:Test mode,Test function:BCH+TCH CH62:902.4MHz, cell power:-60dBm, MS_TX_level : 5 3. Use oscilloscope probe to touch red point and you can find that(For Example:The TXIP signal) Probe Point

5 Company Confidential 5 COMPAL COMMUNICATIONS, INC. Tx Path (I/Q) in DCS Band 1.Set HP8960 or HP8922,Operating mode:Test mode,Test function:BCH+TCH CH699:1747.6MHz, cell power:-60dBm, MS_TX_level : 0 3.Use oscilloscope probe to touch red point and you can find wave(For Example:The TXIP signal) Probe Point

6 Company Confidential 6 COMPAL COMMUNICATIONS, INC. Tx Path(LO) in GSM Band 1.Set HP8960 or HP8922,Operating mode:Test mode,Test function:BCH+TCH CH62:902.4MHz(CH699:1747.6MHz), cell power:-60dBm, MS_TX_level : 5(0) 2.TX signal1 : Use spectrum probe to touch red point ~ 5dBm (CH=62_902.4MHz, RBW=VBW=200KHz, attenuation=20dB ) 3.TX signal1 : Use spectrum probe to touch red point ~ 3dBm (CH=699_1747.6MHz, RBW=VBW=200KHz, attenuation=20dB ) Probe Point

7 Company Confidential 7 COMPAL COMMUNICATIONS, INC. Tx path(PA) in GSM Band Signal1(APC Wave) 1.Set HP8960 or HP8922,Operating mode:Test mode,Test function:BCH+TCH CH62:902.4MHz, cell power:-60dBm, MS_TX_level:5 3.TX signal1 : Use oscilloscope probe to touch R66 to get signal1 wave

8 Company Confidential 8 COMPAL COMMUNICATIONS, INC. Tx path(PA) in DCS Band 1.Set HP8960 or HP8922,Operating mode:Test mode,Test function:BCH+TCH CH699:1747.6MHz, cell power:-60dBm, MS_TX_level : 0 2.TX signal1 : Use oscilloscope probe to touch R66 to get signal1 wave signal1

9 Company Confidential 9 COMPAL COMMUNICATIONS, INC. Tx path(TR switch) in GSM Band Signal1 VC2 APC 1.Set HP8960 or HP8922,Operating mode:Test mode,Test function:BCH+TCH CH62:902.4MHz, cell power:-60dBm, MS_TX_level : 5 2.TX signal1 : Use oscilloscope probe to touch U17 Pin8(R83) to get signal1 wave

10 Company Confidential 10 COMPAL COMMUNICATIONS, INC. Tx path(TR switch) in DCS Band Signal1 VC2 APC 1.Set HP8960 or HP8922,Operating mode:Test mode,Test function:BCH+TCH CH699:1747.6MHz, cell power:-60dBm, MS_TX_level : 0 2.TX signal1 : Use oscilloscope probe to touch U17 Pin5(R85) to get signal1 wave

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