Nokia 6620 サービスマニュアル
Issue 3 05/2005
COMPANY CONFIDENTIAL
31
Copyright © 2005 Nokia. All Rights Reserved.
NHL-12
6 - Baseband
Nokia Customer Care
AFC
UEM
VCTCXO
Voltage Min
Max
Max
0.0
2.4
2.4
0.1
2.55
2.55
V
Automatic fre-
quency control
svoltage for the
VCTCXO
quency control
svoltage for the
VCTCXO
Source
impedance
impedance
200
ohm
TXC
UEM
Helgo
Voltage Min
Max
Max
2.4
0.1
V
Transmitter
power level and
ramping control
power level and
ramping control
Source
impedance
impedance
200
ohm
Load
resistance
capacitance
resistance
capacitance
5
15
kohm
pF
pF
RFTemp
Helgo
UEM
Voltage at -
20 deg.C
20 deg.C
1,57
V
Temperature
sensor of the RF.
sensor of the RF.
Voltage at
+25 deg.C
+25 deg.C
1,7
Voltage at
+60 deg.C
+60 deg.C
1,79
DC_sens
e
e
PA
UEM
Voltage
0.7
1.35
2.0
V
PA final stage
quiescent cur-
rent level infor-
mation
quiescent cur-
rent level infor-
mation
IPA1&IPA
2
2
UEM
PA
Output volt-
age
age
0
2.7
V
PA final stage
quiescent cur-
rent adjustment
quiescent cur-
rent adjustment
Current
range
range
0
5
mA
Resolution
4
bits
Table 13: Analogue signals between BB and RF
Signal
Name
From
To
Parameter
Min
Typ
Max
Unit
Function