Nokia 5110 Manuale Di Servizio
PAMS
Technical Documentation
NSE–1
System Module
Page 3 – 5
Original 03/98
Transceiver NSE–1
Introduction
The NSE–1 is a radio transceiver unit designed for the GSM network. It is a
GSM phase 2 power class 4 transceiver providing 15 power levels with a
maximum output power of 2 W. The transceiver is a true 3 V transceiver.
GSM phase 2 power class 4 transceiver providing 15 power levels with a
maximum output power of 2 W. The transceiver is a true 3 V transceiver.
The transceiver consists of System/RF module (UP8S/UP8R), User inter-
face module (UE4S) and assembly parts.
face module (UE4S) and assembly parts.
The transceiver has full graphic display and one soft key based user inter-
face.
face.
The antenna is a fixed helix. External antenna connection is provided by
rear RF connector
rear RF connector
Functional Description
There are six different operation modes:
– power off mode
– idle mode
– NSPS mode
– active mode
– charge mode
– local mode
In the power off mode only the circuits needed for power up are supplied.
In the idle mode circuits are powered down and only sleep clock is run-
ning.
ning.
In the No Serve Power Save mode circuits are powered down, and only
sleep clock is running if no carrier is found during the scanning period.
The purpose of this mode is to reduce power consumption in the non–
network area.
sleep clock is running if no carrier is found during the scanning period.
The purpose of this mode is to reduce power consumption in the non–
network area.
In the active mode all the circuits are supplied with power although some
parts might be in the idle state part of the time.
parts might be in the idle state part of the time.
The charge mode is effective in parallel with all previous modes. The
charge mode itself consists of two different states, i.e. the charge and the
maintenance mode.
charge mode itself consists of two different states, i.e. the charge and the
maintenance mode.
The local mode is used for alignment and testing.