Installation Guide
T942C- and T942C/2 Central Unit
SW02
LEDs
LED01A
LED01B
LED02
LED03
LED04
LED05
LED06
LED07
LED08
LED09
IC-Circuits
IC01
IC08
IC13, IC14
IC22
IC54
2003-01-08 / Rev.C
If the settings of sections 1, 3 or 4 on switch SW2 are changed, the Central
Unit must be restarted for the change to become effective. Section 1 is set
to ON if a PC (connected to connector J09) equipped with WinBK or other
special program, is to be used according to the PC line protocol.
If section 1 is set to OFF, a PC equipped with a terminal emulating program
can be used as an aid at the installation test procedure and for service.
Section 2 is used for test pagings (ON = Test pagings on, OFF = Test pagings
off). Section 2 is normally set to OFF.
Section 3 determines if the parameter list is to be read from the non-volatile
memory or from the FLASH PROM (ON = Read from the non-volatile
memory, OFF = Read from the FLASH PROM). Section 3 is normally set to
OFF.
Section 4 determines if the non-volatile memory is to be reset or not after
restarting the Central Unit (ON = Reset, OFF = Reset not). Section 4 is
normally set to OFF.
Sections 5 is used for "off licensed mode".
Sections 6-8 are not used and are set to OFF.
Green function indicator.
Red function indicator.
BCP communication in progress.
Paging systems: Synch. data transmission in progress on D-bus.
CTS: Communication in progress on E-ER bus.
Communication in progress between MP and BCP.
Paging systems: Speech in progress.
CTS: Call in progress.
Aux. relay output (on connector J10) is active.
Paging systems: Speech in progress between separate systems
CTS: not used.
Indicates transmission to external computer (J09).
Indicates reception from external computer (J09).
Microprocessor, type 80C188EB.
Module key.
FLASH PROMs, contain the software for IC14: the main processor.
RAM memory with battery backup.
FLASH PROM, contains the software for the communication processor.
Handook page
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TD 91684GB
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