User's Manual
Table Of Contents
- Contents
- Tables
- Figures
- 0 Document History
- 1 Introduction
- 2 Product Concept
- 3 Interface Description
- 4 Mechanics, Mounting and Packaging
- 5 Full Type Approval
- 6 List of Parts and Accessories
Cinterion
®
Java Terminals Hardware Interface Overview
3.9 Power Up/Power Down Scenarios
39
EHSxT_BGS5T_HIO_v02 2015-02-10
Confidential / Released
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3.9 Power Up/Power Down Scenarios
In general, be sure not to turn on the Java Terminals while it is beyond the safety limits of volt-
age and temperature. Java Terminals immediately switch off after having started and detected
these inappropriate conditions. In extreme cases this can cause permanent damage to the
Java Terminals.
3.9.1 Turn Java Terminals on
There are various possibilities to turn on Java Terminals and start into normal mode, depending
on connecting and/or operating states.
If powered off (i.e., if Java Terminals‘ power supply is disconnected):
• Java Terminals can simply be started up by plugging an appropriate power supply unit
between PLUS and GND of the 6-pole Western jack.
If switched off (i.e., while in Power Down mode):
• Java Terminals can be started up by activating the IGT_IN signal (pin 4).
• Java Terminals can be started up by activating the RS-232 DTR line (as long as RST_IN
signal (pin 3) is not active (voltage <2V)
• Java Terminals can be started up by configuring the watchdog appropriately.
Note: With an “auto-ignition“ connection between IGT_IN and PLUS (see Section 3.8) Java
Terminals will automatically restart into normal mode after switch off (see Section 3.9.3). The
start up variant from Power Down mode is therefore only applicable if there is no such “auto-
ignition“ connection at the power supply unit.
3.9.2 Reset/Restart Java Terminals
There are various possibilities to reset/restart Java Terminals:
• Java Terminals can be reset/restarted by entering the command AT+CFUN=x,1. For details
on AT+CFUN please see [1].
• Java Terminals can be reset/restarted by configuring the watchdog appropriately.
• Java Terminals can be reset/restarted by configuring a wake-up alarm (see Section 3.12)
before using AT^SMSO to turn them off and send them into Power Down mode.
• Java Terminals can be reset/restarted by simply shutting them down as described in Sec-
tion 3.9.3 and then restarting them as described in Section 3.9.1. Note: With an “auto igni-
tion“ connection between IGT_IN and PLUS (see Section 3.8) it is ensured that the module
will automatically restart after a normal shutdown using AT^SMSO.