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RM-25
RF troubleshooting
Preparing for transmitter troubleshooting
Steps
1.
Place the phone (mechanics removed) on module jig.
2.
Connect the module jig to PC via a DAU-9P cable.
3.
Connect the module jig to a power supply (4.2V).
4.
Connect the RF output to a spectrum analyzer or another measurement instrument. Use a 10dB attenuator
at the input to spectrum analyzer to avoid damaging it.
5.
Make sure the dongle is connected and start Phoenix.
6.
In Phoenix, choose: File -> Open Product -> RM-25 Product Menu.
7.
Select Testing -> RF Controls.
8.
In the toolbar: set Operating Mode to Local.
9.
Select Band: GSM900, GSM1800 or GSM1900.
10. Set Operation Mode to Burst.
11. Set Active Unit to Tx.
12. Set Tx Data Type to All 1.
13. Set Rx/Tx Channel to 37 for GSM900, 700 for GSM1800, or 661 for GSM1900.
14. Set Tx PA Mode to Free.
15. Set Tx Power Level to 5 for GSM900, otherwise to 0.
9235618 (Issue 2)
Figure 123 Upper and lower shielding cans
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