Dc-Compensation; Receiver Characteristics; Transmitter Characteristics - Nokia NSM-3 Series Technical Documentation Manual

PAMS Technical Documentation
comes in system clock has to be settled into +/– 0.1 ppm frequency accu-
racy. The VCTCXO–module requires also 5 ms to settle into final frequen-
cy. Amplitude rises into full swing in 1...2 ms, but frequency settling time is
higher so this oscillator must be powered up early enough.
DC–compensation
DC compensation is made during DCN1 and DCN2 operations (controlled
via serial bus). DCN1 is carried out by charging the large external capaci-
tors in AGC stages to a voltage which cause a zero dc–offset. DCN2 set
the signal offset to constant value (RXREF 1.2 V).

Receiver characteristics

Item
Type
LO frequencies
Typical 3 dB bandwidth
Sensitivity
Total typical receiver voltage gain ( from anten-
na to RX ADC )
Receiver output level ( RF level –95 dBm )
Typical AGC dynamic range
Accurate AGC control range
Typical AGC step in LNA
Usable input dynamic range
RSSI dynamic range
Compensated gain variation in receiving band

Transmitter characteristics

Item
Type
LO frequency range
Output power
Gain control range
Maximum phase error ( RMS/peak )
Issue 4 02/2002
Direct conversion, Linear, DualBand, FDMA/
TDMA
3700 ... 3840 MHz / 3610 ... 3760 MHz
+/– 104 kHz
min. – 102 / – 100 dBm (EGSM/PCN) , S/N >8
dB
90 dB
350 mVpp , single ended I/Q–signals to RX
ADCs
80 dB
50 dB
30 dB
–102 ... –10 dBm
–110 ... –48 dBm
+/– 1.0 dB
Direct conversion, dualband, non–linear,
FDMA/TDMA
3520 ... 3660 / 3420 ... 3570 MHz
2 W / 1 W peak
min. 30 dB
max 5 deg./20 deg. peak
E Nokia Corporation
NSM–3/3D
System Module
Values
Values
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