Product manual

Installation instructions, Central Processing Unit (CPU2 with External Synchronisation) – REX BRD9032,
REX BRD9033 and REX BRD9034,
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
38
Connectors
The CPU has the following front connectors (see figure 24):
• RS232 printer port
• RS232 personal computer port
• DECT Sync input port (1 input)
• DECT Sync output port (3 outputs in one port)
• General alarm port
RS232 ports and general alarm port are connected to a Modular Cabinet Connection Board (MCCB)
via factory-installed cables.
Interface characteristics of printer and PC ports:
• Asynchronous, PC: 9600 bit/s (default), printer 9600 bit/s
• 8 data bits, 1 stop bit, no parity
• X-on/X-off
The DECT Sync ports are used to synchronize the DECT line between CPU2/EMN boards when
several Radio Exchanges (RE) are used in a system. Standard Cat5 cables with RJ45 connectors
can be used if only two CPU2/EMN boards are used.
Characteristics of DECT Sync ports
• Polarized RJ45
Note:
The CAT5 cable must be modified if one CPU2/EMN (master) board shall drive three CPU2/EMN
(slave) boards. See
Figure 22 on page 39.
LEDs
LED10 : Normally on. Power on LED
LED3 : Normally off. Watch-dog LED (not significant)
LED7 : Normally lit very weak. Communication with backplane LED (not significant)
LED6 : Normally off. Board error LED
: Flashing quickly. Startup
: Flashing slowly . Sync line error during operation.
LED5 : Normally off. Info or error message received, but not read yet
Flashing slowly (0,5Hz). Software download active
Flashing quickly. Error message in the CSM
LED4 : Test and maintenance active. Only on during actual test or when the CSM
communicates with the CPU2/EMN. So it may be blinking.
Reset button
The CPU2/EMN is provided with a reset button. If this button is pressed the complete radio exchange
is reset just as if it was switched off and on again.