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Section 4 - DRL2000 Digital Receiver Line Card
The DRL2000 acts as an interface between the digital
alarm transmitter and the CPM2000. Different communi-
cation formats can be used to transmit the information.
The main functions of the line-cards are to continuously
monitor the telephone line, receive calls from digital dial-
ers or control panels, and to report alarms to the
CPM2000. In addition, if a Line Card is unable to commu-
nicate with the CPM2000, then each Line Card is capable
of functioning independently. Each Line Card can record
256 different alarm messages and 256 Caller-ID telephone
numbers.
4.1
General Information
The receiver is capable of processing signals from digital
communicators in variety of formats. The type of signal
(alarm, trouble, restore, cancel and so on) can be printed.
4.2
DRL2000 Features
• Operator selection of communication formats and
handshake priority
• 64 profiles per line card, up to 255 line pools.
• On-Board Ethernet interface.
• Flash Download for software upgrades.
• Records up to 256 messages.
• Records up to 256 Caller-ID phone numbers. This fea-
ture helps locate and identify the source of the device in
communication and assists in troubleshooting
• Multiple alarms are forwarded to the computer and
printer through the CPM2000 with minimum delay
• The DRL2000 monitors the telephone line connection,
and line faults will result in reports to the computer and
the printer
• DRL2000 automatically goes into stand-alone mode in
case of CPM2000 failure
• 'Watchdog' timer continually monitors receiver opera-
tion
• 'Cold boot' option allows receiver's configuration to be
reset to factory default programming
• DSP processing to reduce data receiving errors, and to
help for weak and noisy signals
• Gain boost available to amplify weak signals
• Serial link for troubleshooting
4.3
Installation
It is recommended that a DRL2000 Cold Start-up be per-
formed when the unit is updated with a new program
version. Refer to Operating Mode Section (DRL2000 Cold
Start-up for information.
After the cold start-up, check the configuration informa-
tion listed in the Quick Reference Guide to make any
required changes for your particular application.
4.4
DRL2000 Controls
Each DRL2000 Module has one telephone line.
Momentarily depressing and releasing a button will regis-
ter as a single input or keystroke.
ON LINE
:
The 'on-line' light will be
ON when the Line Card is on-line in
communication. The 'on-line' light will
be OFF when the Line Card is in Stand-
by Mode. When the line card is on-line
but not in communication, the on-line
LED will FLASH to indicate that the
buffer is full, or that there is a check-
sum error after download.
LINE FAULT
:
The 'Line Fault' light will
come ON if the telephone line is dis-
connected. The 'Line Fault' light will
turn OFF automatically when the tele-
phone line is restored.
TROUBLE
:
The 'Trouble' light will
come ON when the Line Card is shut
down by an operator's command or
when communication with the
CPM2000 is interrupted. The 'Trouble'
light will be shut OFF when the trouble
condition is corrected.
WATCHDOG
:
The 'Watchdog' light
will FLASH to indicate that Line Card
operation is being monitored
[ACK] Button
:
Not used.
[CANCEL] Button
:
Not used.
HANDSET
:
Not used.
DEBUG
:
Connection to a PC for trou-
bleshooting.
[F1] + [F2] Buttons
:
Press and hold
both buttons simultaneously on power
up for 10 seconds will reset the line
card to factory default.
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