TD 91684GB
2003-01-08 / Rev.C
Installation Guide
T942C- and T942C/2 Central Unit
5
SW02 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.
LEDs
LED01A Green function indicator.
LED01B Red function indicator.
LED02 BCP communication in progress.
LED03 Paging systems: Synch. data transmission in progress on D-bus.
CTS: Communication in progress on E-ER bus.
LED04 Communication in progress between MP and BCP.
LED05 Paging systems: Speech in progress.
CTS: Call in progress.
LED06 Aux. relay output (on connector J10) is active.
LED07 Paging systems: Speech in progress between separate systems
CTS: not used.
LED08 Indicates transmission to external computer (J09).
LED09 Indicates reception from external computer (J09).
IC-Circuits
IC01 Microprocessor, type 80C188EB.
IC08 Module key.
IC13, IC14 FLASH PROMs, contain the software for IC14: the main processor.
IC22 RAM memory with battery backup.
IC54 FLASH PROM, contains the software for the communication processor.
