User Guide

PAMS
Technical Documentation
NSB–1
System Module
Original 06/98
Page 3 – 40
Connections
RF connector and antenna switch
Parameter Min. Typ. Max. Unit/Notes
Operating frequency range 1710 1990 MHz
Nominal impedance 50 W
Insertion loss COM to INT 0.3 dB
Insertion loss COM to EXT 0.4 dB
Return loss, at COM port 15 dB
Power rating 2 W, 100% duty cycle
Contact resistance 25 mW
Insulation resistance
(250VDC)
1000 MW
RF–Baseband signals
Signal
name
From To Parameter Mini-
mum
Typi-
cal
Maxi-
mum
Unit Func-
tion
VBAT Battery RF Voltage 3.0 3.6 5.0 V Supply
voltage
for RF
VCXOEN MAD2 CCONT
Logic high ”1” 2.0 VBAT V VR1,
VRBB
in
CCON
T ’ON’
Logic low ”0” 0.5 V VR1,
VRBB
in
CCON
T
’OFF’
Input resistance 50 100 200 kW
Input capacitance 10 pF
SYNPWR MAD2 CCONT
Logic high ”1” 2.0 VBAT V
VR3,
VR4,
V5,
Logic low ”0” 0.5 V
,
VR2 in
CCON
T ’ON’
Input resistance 50 100 200 kW
Input capacitance 10 pF