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Description
MMB-2 Main Board
The MMB-2 Main Board contains:
16-bit central processing unit (CPU)
System read-only memories
(EPROMs)
System random-access memory
(RAM)
FLASH memory for the CSG-M
Watchdog circuitry
Network interface circuitry (MNET)
Battery charger
24V regulator
AC transfer relay
Class A CZM-1B6 power
24 VDC unregulated supply
Two analog loops
(initiating/control)
Two notification appliance circuits
(audible/visual circuits)
Three dry-contact relays
MPS-6 Power Supply
The MPS-6 is a supervised power
supply that converts 120 VAC,
60 Hz to unregulated 24 VDC at 6A.
MPS-12 Power Supply
The MPS-12 is a high current power
supply that provides the MXL System
with primary 24 VDC power. It is rated
at 12 amps and is unfiltered and
unregulated. The MPS-12 supplies the
MMB-2 or PSR-1 and its expansion
modules with the power required for
normal operation. The module incorpo-
rates a 5 amp resettable circuit breaker
on the primary input, a 15 amp fuse on
the 24V output, and a built-in AC line
filter for surge and noise suppression.
The MPS-12 mounts in the MXL
enclosure backbox.
MMB-2 Main Board
MPS-6 Power Supply
MPS-12 Power Supply
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