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RF Calibration
A. What is Calibration?
1. What’s the Rx Calibration
1
Find proper AGC Gain to make the same Rx Power fed into the Base Band Part regardless of
Antenna Input Level
2
Can make report correct RSSI level
2. What’s the Tx Calibration
1
To make Tx Power Level transmitted properly following the information of Base Station
9. Calibration
BB
Part
X
Y
G
X(Input Level)+G(Gain)=Y
Example)
Base
Station
Mobile
Station
GSM 5 Level
32.5 dBm
Tx Cal = In this case, to make
MS transmit 32.5dBm
Z3X-BOX.COM
Summary of Contents for CE500
Page 3: ... 4 Z 3 X B O X C O M ...
Page 77: ...4 TROUBLE SHOOTING 78 5 Check Tx I Q TXQP TXQN TXIN TXIP U704 Test Point Z 3 X B O X C O M ...
Page 85: ...Note 86 Z 3 X B O X C O M ...
Page 93: ... 94 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 94: ... 95 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 95: ... 96 Z 3 X B O X C O M ...
Page 103: ...9 CALIBRATION 104 L Standalone Test Equipment Setup Oscilloscope Z 3 X B O X C O M ...
Page 105: ... 106 Z 3 X B O X C O M ...
Page 127: ...Note 128 Z 3 X B O X C O M ...