User Guide

Nokia Customer Care System Module
Company Confidential RH-30/RH-31
Issue 2 11/2004 © 2004 Nokia Corporation. Page 17
AC and DC characteristics of RF-baseband analogue signals
RESET
(GENIO6)
UPP Helgo ”1” 1.38 1.85 V Reset to
Helgo
”0” 0 0.4 V
Load capacitance 20 pF
Load resistance 10 220 kΩ
Timing accuracy 1/4 symbol
Signal name From To Parameter Min Typ Max Unit Function
VCTCXO VCTCXO UPP Frequency 13 26 MHz High stability clock
signal for the logic
circuits, AC cou-
pled. Distorted sine-
wave e.g. sawtooth.
Signal amplitude 0.2 0.8 2.0 Vpp
Input Impedance 10 kΩ
Input Capacitance 10 pF
Duty Cycle 40 60 %
VCTCXOGnd VCTCXO UPP DC Level 0 V Ground for refer-
ence clock
RXI/RXQ Helgo UEM Voltage swing
(static)
1.35 1.4 1.45 Vpp Received demodu-
lated IQ signals
DC level 1.3 1.35 1.4 V
TXIP / TXIN UEM Helgo Differential voltage
swing (static)
2.15 2.2 2.25 Vpp Programmable volt-
age swing.
Programmable com-
mon mode voltage.
Between TXIP-TXIN
DC level 1.17 1.20 1.23 V
Source Impedance 200 W
TXQP / TXQN UEM Helgo Same spec as for TXIP / TXIN
AFC UEM VCTCXO Voltage Min
Max
0.0
2.4
0.1
2.6
VAutomatic fre-
quency control sig-
nal for VCTCXO
Resolution 11 bits
Load resistance
and capacitance
1
100
kΩ
nF
Source Impedance 200 W
TxC UEM Helgo Voltage Min
Max 2.4
0.1 V Transmitter power
level and ramping
control
Source Impedance 200 W
Resolution 10 bits