Nokia NSE-3 SERIES, Service Manual

Page: 64 / 217

PAMS
Technical Documentation
NSE–3
System Module
Original 11/97
Page 3 – 58
UHF VCO module
Parameter Conditions Rating Unit/
Notes
Supply voltage, Vcc 2.8 +/– 0.1 V
Supply current, Icc Vcc = 2.8 V,
Vc= 2.25 V < 10 mA
Control voltage, Vc Vcc = 2.8 V 0.8... 3.7 V
Oscillation frequency Vcc = 2.8 V
Vc = 0.8 V
Vc = 3.7 V
< 1006
> 1031 MHz
MHz
Tuning voltage in center frequency f = 1018.5 MHz 2.25 +/– 0.25 V
Tuning voltage sensitivity in operating
frequency range on each spot freq. Vcc = 2.8 V
f=1006...1031
MHz
14 +/– 2 MHz/V
Output power level Vcc=2.7 V
f=1006...1031
MHz
–6.0 min. dBm
UHF local signal input in CRFU_1a
Parameter Min. Typ. Max. Unit/Notes
Input frequency range 990 1040 MHz
Input level 200 700 mVpp
Connections
RF connector and antenna switch
Parameter Min. Typ. Max. Unit/Notes
Operating frequency range 890 960 MHz
Insertion loss, COM to INT 0.2 dB
Insertion loss, COM to EXT 0.4 dB
Nominal impedance 50 ohm
Return loss 15
Signal
name
From To Parameter Mini-
mum Typi-
cal
Maxi-
mum
Unit Function
VBATT Battery RF Voltage 3.0 3.6 5.0/6.0 V Supply voltage for
RF
VXOE-
NA MAD CCONT
Logic high ”1” 2.0 2.85 V VR1, VR6 in
CCONT ON
Logic low ”0” 0 0.8 V VR1, VR6 in
CCONT OFF