User Guide

RH-21 Company Confidential
System Module Nokia Customer Care
Page 6  2004 Nokia Corporation. Issue 2 07/2004
Operational Modes
There are several different operational modes. Modes have different states controlled by
the cellular SW. Some examples are: Idle State (on ACCH), Camping (on DCCH), Scanning,
Conversation, No Service Power Save (NSPS) previously OOR = Out of Range.
In the power off mode, only the circuits needed for power up are supplied.
In the idle mode, circuits are powered down and only the sleep clock is running.
In the active mode, all the circuits are supplied with power although some parts might
be in 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 fast charge and the maintenance mode).
The local mode is used for alignment and testing.
Engine Module
Environmental Specifications
Normal and extreme voltages
Voltage range:
• nominal battery voltage: 3.6 V
• maximum battery voltage: 5.2 V
• minimum battery voltage: 3.1 V
Temperature Conditions
Temperature range:
• ambient temperature: -30...+ 60 °C
• PWB temperature: -30...+85 °C