Nokia 2160 Service Manual transcr
TRANSCEIVER
NHC–4
11/97JR
Technical Documentation
Contents of Transceiver
Transceiver 7–2
Introduction 7–2
Technical Specifictions 7–4
Modes of Operation 7–4
Control Channel Operation 7–4
Exploded View of NHC–4NX, –4HX, –4NE, –4EE and –4NV 7–5
Assembly Parts of NHC–4NX, –4HX, –4NE and –4NV 7–6
Exploded View of NHC–4NB and NHC–4HB 7–7
Assembly Parts of NHC–4NB and NHC–4HB 7–8
7–1
Copyright Nokia Mobile Phones
TRANSCEIVER
NHC–4
Transceiver
Related Documentation
Introduction
11/97JR
Technical Documentation
Copyright Nokia Mobile Phones
3C 0500397 expl. view of NHC–4NX/HX/NE/NV
3C 0500398 expl. view of NHC–4NB/HB
6E 0260659 ass. parts of NHC–4NX/HX/NE/NV
6E 0260871 ass. parts of NHC–4NB/HB
3C 0500225 expl. view of NHC–3XN
6E 0260349 ass. parts of NHC–3XN
3C 0500226 expl. view of NHC–3AA
6E 0260350 ass. parts of NHC–3AA
3C 0500227 expl. view of NHC–3XB
6E 0260351 ass. parts of NHC–3XB
7–2
The NHC–4 is a dual mode handportable Cellular phone for North American
dual mode TDMA system. Reference for specifications are IS–55A ”Recommended Minimum Performance Standards for 800 MHz Dual–Mode Mobile
Stations” and IS–54B ”Dual–mode Mobile station – Base station Compatibility
Standard”, RSS128 ”800 MHz Dual–Mode Cellular Radiotelephones” and
”CTIA Certification program”.
NHC–4 offers analog mode and digital mode full rate speech services defined
in IS–55A and analog mode asynchronous data services. It provides nine transmission power levels in digital mode and six in analog mode at a maximum
power level of 0.6 W +2/–4 dB in power class IV. The transceiver has a retractable antenna and a connector for external antenna. User communicates with
phone via LCD–display, keybord and some audible tones.
NHC–4 can be connected to different accessories e.g. chargers, holders,
hands–free units, data–adapters and handset through the bottom system connector. NHC–4 can also be connected to a RF booster, which increases transmit power to full mobile power level class I. NHC–4 supports three different battery options: NiCd standard and NiMH high capacity and slim battery.
The transceiver consist of four modules: UIF module, system module, battery
pack and mechanics.
TRANSCEIVER
NHC–4
BATTERY
PACK
11/97JR
Technical Documentation
SYSTEM / RF MODULE
UIF MODULE
LCD
KEYBOARD
7–3
Copyright Nokia Mobile Phones
TO/FROM ACCESSORIES
CHARGER
EXT. ANTENNA
MICROPHONE
EARPIECE
BUZZER
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