Nokia 8210 Service Manual
NSM–3
System Module
PAMS Technical Documentation
Page 45
Issue 1 12/1999
Nokia Mobile Phones Ltd.
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.
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).
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
Values
Type
Direct conversion, Linear, DualBand, FDMA/
TDMA
LO frequencies
3700 ... 3840 MHz / 3610 ... 3760 MHz
Typical 3 dB bandwidth
+/– 104 kHz
Sensitivity
min. – 102 / – 100 dBm (EGSM/PCN) , S/N >8
dB
Total typical receiver voltage gain ( from anten-
na to RX ADC )
90 dB
Receiver output level ( RF level –95 dBm )
350 mVpp , single ended I/Q–signals to RX
ADCs
Typical AGC dynamic range
80 dB
Accurate AGC control range
50 dB
Typical AGC step in LNA
30 dB
Usable input dynamic range
–102 ... –10 dBm
RSSI dynamic range
–110 ... –48 dBm
Compensated gain variation in receiving band
+/– 1.0 dB
Transmitter characteristics
Item
Values
Type
Direct conversion, dualband, non–linear,
FDMA/TDMA
LO frequency range
3520 ... 3660 / 3420 ... 3570 MHz
Output power
2 W / 1 W peak
Gain control range
min. 30 dB
Maximum phase error ( RMS/peak )
max 5 deg./20 deg. peak