DSC PC1575 Instalační manuál Strana 5
- Strana / 32
- Tabulka s obsahem
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Hodnocené. / 5. Na základě hodnocení zákazníků
4
HOW THE LINKS1000 WORKS
Cellular Communications
All cellular telephones, including the LINKS1000, must ‘register’ with the cellular network. ‘Registration’ is
simply a handshake, sending ESN and Telephone number, between the cellular switching station and the
cellular telephone. This is done upon power up of the LINKS1000 and randomly once a day. If the phone does
not register the network will not complete a call. Tower signal strength, also called RSSI (receive signal
strength indication) is updated approximately every 4-5 seconds. RSSI is indicated as a go/no go visible via
the RSSI LEDs (L3, L4, L5, L6).
Sending an alarm
Before dialing the central station, all DSC alarm controls perform a telephone ‘line-test’. This is done via the
control unit using a series of off-hook and on-hook transitions to verify dial-tone. This takes 30 seconds.
The control panel ‘line-test’ feature will only determine a telephone line is inoperative when it is attempting to
send an alarm. With a LINKS1000 connected, the control panel will send the central station telephone number,
in a digital format, from the PGM output of the control panel to the PGMIn input of the LINKS1000. The
LINKS1000 then accesses the cellular telephone network and begins dialing. Once a suitable channel is
established the LINKS1000 switches an onboard relay and establishes a connection between the TIP and
RING terminals on the control panel and the T1 and R1 terminals on the LINKS1000.
With cellular communications now open to the central station receiver, the panel will detect ‘handshake’. The
alarm is sent. If the message is received, ‘kiss-off’ is sent, just as if it were communicating over a standard
telephone line. Once the panel has completed the transmission, the control panel ‘hangs up’. The LINKS1000
then detects the loss of current across T1 and R1 and sends the END key to the cellular network.
Telephone Line Monitor
The Telephone Line Monitor is a separate feature integral to DSC or Sur-gard control panels PC1575 and
higher. The TLM looks for a 30 second loss of telco line voltage. With a LINKS1000 connected and TLM
signaling enabled, a service outage would trigger the panel to begin dialing though the LINKS1000. Dialing
will begin after the TLM time-out and ‘line-test’ are complete. This should take 1 minute.
Trouble supervision
Trouble supervision of the LINKS1000 is provided in one of two ways:
When Jumper J1 is ON (shorted), a general system trouble indication is used at the LINKS1000 SYS TBL
terminal. All trouble indications will trigger this output to the control panel.
When Jumper J1 is OFF (removed), there are three separate trouble outputs: AC TBL, Bat TBL, and the
LINKS1000 SYS TBL. The AC TBL terminal and Bat TBL terminals are each used to indicate their respective
troubles. The LINKS1000 SYS TBL will activate for all other troubles. These outputs are connected from the
LINKS1000 terminals to separate zones on the control panel. The zone(s) should be programmed as 24-hour
silent except on the PC1575, PC4010, PC4020, PC4020KT and PC5010 where a zone (or zones) is designated
for LINKS1000 supervisory. Under normal conditions, the TBL outputs of the LINKS1000 are “open”. When
one or more of the six monitored trouble conditions are present, and the corresponding time-out has expired,
the respective output will be pulled to ground. The connection from the LINKS1000 TBL output to the control
panel zone, forces the zone to ground. The panel now has an alarm it must send and the dialing sequence
begins. Typically, trouble signals are sent via the telco line. If the telephone line is not operational, the panel
will send the signal via the LINKS1000 and the cellular network.
Downloading
Downloading an alarm control via the LINKS1000 requires connecting the RING terminal on the LINKS1000
to the proper terminal on the control panel (see instructions). Then, from the downloading computer, simply
dial the cellular telephone number of the LINKS1000. The LINKS detects an incoming call and pulls the RING
terminal to 12 VDC. This instructs the alarm control to answer, the panel then provides continuity across TIP
and RING. The LINKS detects current flow and connects the LINKS T1 and R1 and the panel TIP and RING.
- INSTALLATION MANUAL 1
- CONTENTS 2
- LINKS1000 GLOSSARY OF TERMS 3
- INTRODUCING THE 4
- HOW THE LINKS1000 WORKS 5
- Emergency Phone Number 6
- SETTING UP THE PROGRAMMER 7
- LINKS1000 PROGRAMMING GUIDE 8
- Programming the LINKS1000 9
- INSTALLATION 11
- RM-1 Lead Connection 12
- Telephone Terminals 13
- Bat TBL Terminal 13
- AC TBL Terminal 14
- Battery Connections 14
- Jumper J1 14
- Jumper J2 14
- RELOCATING THE ANTENNA 19
- Communication Formats 20
- PC1575 Control Panel 21
- PC2525 Control Panel 21
- PC2550 Control Panel 22
- PC3000 Control Panel 22
- PC5010 Control Panel 24
- Sur-Gard DC1664LC 25
- Sur-Gard P16LC 25
- TESTING THE SYSTEM 26
- LINKS1000 TROUBLE SHOOTING 27
- LINKS TROUBLE SUPERVISION 28
- Message LINKS Trouble 29
- LIMITED WARRANTY 30
- How to Contact Us: 30
- FCC COMPLIANCE STATEMENT 32
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