MCR-300/UART
PowerCode Receiver Interface Module
User Guide
1. INTRODUCTION
The MCR-300/UART module is a PowerCode receiver interface module
designed to communicate with Visonic PowerCode / CodeSecure
wireless devices. The module includes a super-heterodyne receiver
module, specifically for digital data transfer on UHF radio channels. Its
main application is as an RF interface unit used in security systems that
communicates digital codes and reports. The receiver features serial
data output at CMOS levels, which may be applied to a decoder or
directly to a micro-processor unit.
The Module decodes PowerCode & CodeSecure wireless messages
and transfers them into a serial bit stream as defined by the receiver
protocol description.
The module includes two integral antennas for diversity reception,
allowing high performance reception, overcoming "in-band" interference.
Mechanical support and electrical connections to the MCR-300/UART
are obtained by mounting the module on a 5-pin header seated on the
host motherboard. The header pins are connected to a panel.
2. SPECIFICATIONS
Receiver Type:
Single-channel, UHF super-heterodyne receiver.
Frequency:
868.95 MHz
Bandwidth:
400
kHz
@
-3dB
points
Data Rate:
Up to 1 kbps NRZ.
Data Output Levels:
0V (LOW) and 5V (HIGH).
Baud rate:
9600
Parity bit:
None
Data bit:
8
Stop bit:
1
UART interface
2 Integral Antennas diversity reception allowing high performance
reception, overcoming "in-band" interference. Length
: 80mm
Supply Voltage:
5 VDC ±5%.
Current Consumption:
15 mA @ 5 VDC.
2 MGC-Manual Control Gain:
•
MGC - High "5V" - Sensitivity attenuation 30dB.
•
MGC - High impedance - Normal Sensitivity
Note: Do not connect MGC to GND
Operating Temperatures:
0°C to 49°C (32°F to 120°F).
Dimensions:
52.5 x 51 x 12 mm
Compliance with Standards:
Complies with EN 301 489-3 V1.2.1
(2000-08), EN 300 220-1 (1999) and EN 50131-1 Grade 2, Class II
requirements.
Note: A sample disc can be obtained on email request.
GND
RX
TX
5V
MGC
GND
RSSI
DATA
5V
MGC
PIN HEADER
RFR MODULE
GND
GND
ANT
51 mm
80 mm
28 mm
4 mm
Figure 1. Top View of PCB and Electrical Connections
WARNING: Changes or modifications to this unit not expressly
approved by the party responsible for compliance could void the
user's authority to operate the equipment.
3. WIRING AND SETTINGS
5
VDC
RJ-11
RS-232 ADAPTER
to COM-1 or COM-2
PC connector
Display of detectors communication format
(PowerCode/CodeSecure), signal strength,
ID and events data
2-wire cable
PowerCode /
SecureCode
Device
Antenna
PowerCode /
SecureCode
Device
GND
RX
TX
5V
MGC
GND
RSSI
DATA
5V
MGC
PIN HEADER
RFR MODULE
GND
GND
ANT
51 mm
80 mm
28 mm
4 mm
Note: Make sure that com ports 1 and 2 of your computer are not being used by another application.
Figure 2. Functional Diagram
DE3140U
1
