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c. MOH Internal Melody #2
d. 1 Modular 6 Pin Modular Jack for External (2 inputs) MOH inputs
e. 1 Modular 6 Pin Modular Jack for External Page (2 outputs) and Alarm Contacts
The DMAP1 card must be installed in the main cabinet. There can only be one DMAP1 in
a two cabinet system.
2.5 POWER SUPPLY (DPCU)
Each DCS 400si cabinet can contain either one or two plug-in power converter units (i.e.,
system power supply). The power converter units can be powered by either 110/220 volt
AC or -48 volt DC input. The DPCU converts these input voltages to +5 volts, -5 volts and
48 volts DC output power to the DCS 400si system.
Multiple DPCUs provide a more cost efficient and serviceable method to meet the various
configurations of stations and trunks. Each DPCU can power 96 devices. The devices are
determined as circuits that require 48 volts DC from the system. To calculate the 48 volt
load, count each device as one unit of power times the number of circuits per card. For
example a 24 port DLI card (D24DL) supplies 48 VDC to each keyset so each DLI port
counts as 1 power unit. Therefore each D24DL counts as 24 power units. The following
interface cards use 48 VDC and count towards the total required power units.
1. D24DL (1B+D)
2. D24DL (2B+D)
3. D24SL
4. D16SL
5. 8UTRK
Other types of interface cards do not use 48 VDC from the system supply so they should
not be counted.
2.6 SYSTEM DAUGHTERBOARDS
DROMD DAUGHTERBOARD
The DCS 400si ROM daughterboard (DROMD) mounts on the DCCP and supports up to
8 Mbytes of program memory space to support the system operating program. This board
is equipped with sockets and the EPROM chips that contain the system program (soft-
ware) plug into these sockets. Thus, the EPROMs are plugged into this daughterboard
and it is plugged as a single unit into the DCCP board. This makes it physically easier to
change system software. Every DCS 400si system must be equipped with a DROMD
daughterboard to operate. The EPROMs are not included with the DROMD. The software
must be ordered separately.
DCDM DAUGHTERBOARD
This optional, but highly recommended, Customer Data Module board mounts on the
DCCP and provides 2 Mbytes of "Super Capacitor" backed RAM memory. This allows for
a separate removable database storage location on the DCCP board. Thus, it supple-
24 power units
48 power units
24 power units
16 power units
8 power units
2.5
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