System overview
21
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19. 24VDC input (battery backup):
Connect the 24VDC battery charger for battery backup.
20. 24VDC input:
This input is to connect to the external power transformer.
21. Ground (GND) socket.
2.5
Digital paging console
2.5.1
DPM paging microphone/microphone keypad/speaker pad
DPM-MAIN / DPM-EVA / DPM-KPD
DPM-KPD / DPM-EVA / DPM-MAIN
The DPM consists of three units: DPM-MAIN, DPM-EVA and DPM-KPD. The DPM-MAIN is the
digital paging console, the DPM-KPD is an expansion keypad used to expand the DPM-MAIN, and
the DPM-EVA is a monitoring speaker pad with an EVAC button and 5 programmable buttons.
Each remote port on BTQ-VM/SL/SG can address up to 8 DPM-MAIN remote consoles in daisy-
chain or up to 16 units in redundant loop using 2 ports. Each DPM-MAIN can attach one DPM-EVA,
and up to 16 DPM-MAIN with DPM-EVA/KPD are linked by the fl at cable. The maximum
communication cable length is 250M (820 ft.) between the BTQ-VM/SG/SL and DPM, DPM and
DPM via STP CAT5/6 cable with shielded RJ45 connector.
The programmable buttons represent a single zone or a group of zones, the buttons can also act as