Adjustment Procedure; Equipment Setting For Tx/Rx Adjustment; Main Subjects - Panasonic EB-X300 Service Manual

8.3. Adjustment Procedure

8.3.1. Equipment Setting for TX/RX adjustment

Notes: 1. It is recommended that each band (GSM 900, DCS 1800 and PCS 1900) is tested in turn.
2. Ensure the RF Cable is connected properly.
PC
1. Connect all three equipment as shown.
2. Set the cable loss within the GSM tester before proceeding to any tests.
3. Power on the handset before executing the main program.
4. Change the handset comport setting: *#369# -> Com port -> GENIE
5. After completing the adjustment procedure, set the handset comport setting back to "Off". Failure to do so will cause the
handset to malfunction.

8.3.2. Main Subjects

<A> TX Power
TX Power Scaling Factors
TX Freq Compensation
<B> RX RSSI (Received Signal Strength Indication)
Accurate Gain Control
RX Freq Compensation
<C> Battery Calibration
Band TX/Fu(n)
E-GSM900 Fu(n) = 890+0.2*n
Fu(n) = 890+0.2(n-1024)
DCS1800 Fu(n) = 1,710.2+0.2(n-512)
PCS1900 Fu(n) = 1,850.2+0.2(n-512)
ARFCN : Absolute Radio Frequency Channel Numbers
Power Supply
Download Cable
Dummy Battery
RX/Fl(n)
Fl(n) = Fu(n)+45
Fl(n) = Fu(n)+95
Fl(n) = Fu(n)+80
GSM Tester
3.8 V
RF Cable
ARFCN
0 < n < 124
= =
975 < n < 1,023, Middle: 37
= =
512 < n < 885, Middle: 698
= =
512 < n < 810, Middle: 661
= =
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