Transmitter Probing - Nokia NPD-1 Series Troubleshooting - Rf

CCS Technical Documentation
nents in the RF section have the same input and output impedance (50 ohms), but where
this is not the case, absolute power is noted in the tables in dBm, rather than loss or gain
in dB.
When testing the CDMA receiver, it is easier to inject a CW tone into the receiver. The
gains and losses will be the same for a CW signal as for CDMA.

Transmitter Probing

Table 1: Transmit Output Powers and Associated AGC PDM values and voltages
TX RF AGC
PDM value voltage
typical v
-409 0.17
-409 0.17
-409 0.17
-249 0.44
-104 0.70
37 0.95
-403 0.17
-403 0.17
200 1.23
450 1.68
511 1.78
-428 0.13
-235 0.46
290 1.39
511 1.78
511 1.78
IMPORTANT NOTE: AGC PDM values will change (sometimes drastically) as the phone warms up.
The table above lists PDM values for when the phone is first turned on. After 10 minutes at full power,
PDM values will be different.
Issue 1 11/2002
channel 384 (Cell) or 600 PCS
AMPS
TX IF AGC
PDM value voltage
typical v
-110 0.68
-92 0.71
-76 0.74
-66 0.77
-56 0.78
-48 0.79
CELL CDMA
-115 0.678
100 1.064
100 1.064
105 1.07
170 1.19
-220 0.495
-28 0.832
-28 0.832
-20 0.846
110 1.082
Nokia Corporation
Probed RF
power on
PDM value
Balun Out
dBm typical
-11.2 +/- 3 dB -19
-13.2 +/- 3 dB -123
-15.4 +/- 3 dB -310
-19.4 +/- 3 dB -330
-22.4 +/- 3 dB -330
-27.9 +/- 3 dB -330
-14 +/- 3 dB 220
-38 +/- 3 dB -270
-56 +/- 3 dB -331
-70 +/- 3 dB -331
-80 +/- 3 dB -331
PCS
-17 +/- 3 dB 220
-47 +/- 3 dB -324
-66 +/- 3 dB -324
-76 +/- 3 dB -324
+/- 3 dB -324
Confidential
NPD-1
Troubleshooting — RF
PA AGC RF power
on RF con-
voltage
nector
v dBm
0.84 26.5 (PLO)
0.66 25.0 (PL3)
0.34 21.0 (PL4)
0.30 17.0 (PL5)
0.30 13.5 (PL6)
0.30 9.0 (PL7)
1.27
0.40
0.29 -23
0.29 -39
0.29 -50
1.27
0.31
0.31 -23
0.31 -38
0.31 -50
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