Introduction & Specifications
SC-SDT Applications Overview
1-8
SpectraComm SDT
076R174-000
Installation and Operation Manual
Issue 4
A Contact Sense Applications
The SpectraComm SDT rear panel DB-25 connector can perform contact sensing and can be
configured for alarm notification whenever a change in contact relays occur at customer sites.
SC-SDT detects when a contact changes from its normal state and declares an “active” alarm.
A “clear” trap is sent when the contact returns to the normal state. The alarm notification is user-
configured to send an SNMP Trap as follows: after sensing a relay state change from the normal
state (open or closed), an alarm trap is sent to a management station using an SNMP alarm trap.
Each SC-SDT rear panel connector provides up to eight contact input ports for sensing activation
of an open or closed contact. To support requirements for more contact ports, simply add more
SC-SDT devices to accommodate each site requirements.
shows the SC-SDT tracking temperature and entry sensors at a remote location, with
SNMP Traps sent to a Management Station. Contact transport message (future option) is shown
being sent to another SC-SDT site.
Note
An SC-SDT is not needed to receive traps. Any Management Station in the network can be a trap destination.
Figure 1-4
Contact Sensing with Contact Alarms (Contact Transport shown as future option)
Future Options
•
Contact State Transport (Future option): After sensing a relay state change, a message is sent
to a remote SC-SDT device to open or close a relay at that site. SC-SDT devices will be required
at both sites.
•
Trap and Transport (Future option): The alarm will be transported between sites and a Trap will
be sent to a management station (destinations for alarm transport and Trap are independent).
MANAGEMENT
STATION
ALARM
TRAP
CONTACT
TRANSPORT
CONTACT
ACTIONS
Alarm Status
at the SNMP Controller
Door
Alarm
Smoke Detection
Alarm
Temperature High
Alarm
INPUT
INPUT
. . .
INPUT
DOOR ALERT
FIRE ALERT
OUTPUT
OUTPUT
. . .
IP
NETWORK
ALARM
TRAP
Alarm Status
at the SC-SDT CLI Interface
Contact Status
Contact
Name
Admin
State
Normal
State
Current
State
Alarm
Status
contact1
contact2
contact3
contact4
contact5
contact6
contact7
contact8
ON
ON
ON
ON
ON
OFF
ON
ON
NC
NC
NO
NO
NO
NO
NO
Open
Closed
Open
Closed
Open
Open
Open
Active
Clear
Clear
Active
Clear
Clear
Clear
Contact Descriptions
Door 1 Open
Door 2 Open
Smoke Detection
Motion Detection
Temperature High
Power Fluctuation
Battery Backup Engaged
contact1
contact2
contact3
contact4
contact5
contact6
contact7
contact8
SNMP Trap Watcher
Edit
Settings
Time Date Source Description
File
E
G
G
i
09:43:28
09:43:05
08:11:53
05:36:10
contact1 "Door Open" ACTIVE (GMT13:3957 5/22/2003)
contact4 "Motion Detection" ACTIVE (GMT13:3957 5/22/2003)
Link Up
Local Trap Watcher Listening on UDP port 162
05/22/2003
05/22/2003
05/22/2003
05/22/2003
172.160.5.12
172.160.5.12
172.160.5.12
172.160.5.12
09:43:50
CO
NT
AC
T T
RANS
PORT
OV
ER
IP
NE
TW
ORK
REMOTE OFFICE 'A'
REMOTE OFFICE 'B'
General
DataComm
General
DataComm
POR
T
1
INS
POR
T
1
POR
T
2
POR
T
2
SC SDT
POR
T
3
ON
POR
T
3
AL
TM
ET
POR
T
1
INS
POR
T1
POR
T2
POR
T
2
SC SDT
POR
T
3
ON
POR
T3
AL
TM
ET
(Future Option)
(Future Application)
Содержание SpectraComm SDT
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