Karel MS48, Инструкция по установке и обслуживанию

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Karel MS48 Installation & Maintenance Guide
Edition 3.2
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Only one of the three CRL accessories - namely KY16 Mini Printer, CM48
CRL Interface and/or PK48 PC-Console Interface, RS232 Serial Printer
Interface - can be connected to the system at a time. The selection among
these devices is made by programming.
- PKCR (used by PK48 and CM48) and RS232 cards have the same PCB,
with some different components. It is possible to distinguish the cards by
component U4, which exists on RS232 card only.
II.7. DOORPHONE – DY26
MS48 system has a built in circuitry, which can drive DY26 Doorphone. Any user of
the system can access the doorphone and make a conversation with the party near
the doorphone. The voice path is full-duplex. The doorphone has a ring button on it.
This ring button can be utilized to ring an external ringer or an extension telephone.
DY26 Doorphone has a speech processor card inside the metal box.
The outlook and structure of DY26 is illustrated in the following figure.
Figure A-17
The pin-out of the 4-pin doorphone connector on the MB48 motherboard is
illustrated in the following table:
MB48 Motherboard
Doorphone Connector
Pin no Signal
1 SPEECH
2 GND
3 +
5 VDC
4 RINGGEN
The dimensions of DY26 are 12 cm x 14 cm x 3 cm and the weight is 0.5 kg.
II.8. EXTERNAL ANNOUNCEMENT SYSTEM
Any external announcement system can be connected to MS48 system through the
4-pin doorphone connector on MS48 motherboard.