User Guide

PAMS Technical Documentation 10. Troubleshooting
NSD-5
Issue 1 05/02 Nokia Corporation Page 35
TX Tuning
Description of Test
The RIF and TIF AGC is approximately a second-order curve; this curve is split into
16 segments for both Transmitter and Receiver. Offset and slope values are stored in
EEPROM for each of these 16 segments. The offset for the segments is computed from
C
Remove L619
Measure TX UHF LO power at
C510
> -5dBm
Measure DC level of G502
pin 9 >2 .7V
Measure power level
at R517
> -5dBm
Measure DC level of V502
pin 1> 0.5 V
Check
C521, C510, R517, R518, R516
Change G502
Change the V502
Set to CH300 in CDMA Testing Mode
Measure TX UHF LO frequency at C510
Add L619
END
Measure
SYN_LE1,
SYN_DAT,
SYN_CLK
Displayed
waveforms?
Check MAD4
No
Yes
Yes
No
Yes
No
Yes
Yes
No
No
Yes
=2088.1MHz
@ Ch600
+/-150Hz