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KDA 864-SNMP - A modern build of the popular classic RTU

Summary of Features

  • Network Interface Adapter in Expansion Slot Links SNMP - Ethernet 10 Base-T
  • 64 Alarms and 8 Controls in One Rack-Unit Package
  • Optional Modem for Dial-Up or Alternate Path Communications on Secondary Port
  • SNMP Traps and Queries
  • Alarm Qualification Times
  • Downloadable Firmware
  • Configures with T/KDA Software (Included)
  • Non-Volatile RAM Stores Configuration
  • Protocol Analyzer Speeds Turn Up and Diagnostic Efforts
  • Operational Status LED's Provide Local Display of KDA Operation and Point Status
  • Optional Connectorized Backplane Available
  • Collect Alarms from any Point on Your LAN
  • Reduce Requirements for Additional Costly Communications Circuits



The KDA 864-SNMP brings conventional discrete alarm and control points to your existing SNMP management system, using your already deployed 10 Base-T network.

The KDA 864-SNMP consists of a time-stamp KDA864 Alarm and Control Remote and a Network Interface Adapter (NIA) card that fits in the expansion card slot to interface it directly to an Ethernet 10 Base-T network using SNMP protocol.

The KDA remote is able to deal with the multitude of monitoring requirements at remote telecom sites - environmental status, battery plant voltages, security, switch alarms, transmission equipment, tower lights, outside plant status - be it a small hut or an entire central office.

The KDA and NIA card brings flexibility and intelligence to your Network Management System. Flexible to handle today's needs and intelligent enough to fulfill future demands.

The NIA card can be mounted in the expansion card slot of the KDA host or it can be located in its own housing near to the KDA host.

The host KDA's alarm inputs are optically isolated, polarity reversible. Control outputs are relay isolated. Magnetic-latching relays are optional.

The host KDA must be equipped with an RS232 docking pad on the primary port in order to interface the NIA card's collection port. The NIA card communicates with the network using an 802.3 10-BaseT Ethernet transport. An alternate path routing function can be accommodated via a dialup port on the NIA card, using Ethernet SLIP/PPP.

Front panel LEDs show unit activity and alarm conditions. A visual fuse alarm indicator is included.

The host KDA with NIA card features plug-in PC boards in a fixed-mount housing with a connectorized backplane.

DPS's KDA 864-E2 now brings flexibility and intelligence to your E-System Monitoring Network. Flexible to handle today's needs and intelligent enough to fulfill future demands.

Personnel can use T/KDA software on a personal computer at the front panel craft port for local configuration or full interactive monitoring. The software includes the MIB (Management Information Base) and TDF (Trap Definition File).

T/KDA software includes a protocol analyzer.

Network Architecture

A KDA equipped with an NIA card reports alarms over an Ethernet 10 Base-T facility to an SNMP manager. Optional alternate path reporting is via dial-up circuits to an SNMP manager.

The KDA 864-SNMP has been tested and is known to be compatible with the following SNMP managers: IBM OpenView (formerly HPOV), SNMPC for Windows and Net Expert.

Routing Option: Alternate Path Routing Assures Alarms are Transported During Network Outages.

Functional Schematic
See functional schematic of the KDA 864-SNMP Alarm Remote.


KDA Host
Dimensions: 17.0"(W) X 12.0"(D) X 1.75"(H)
Mounting: 19" or 23" rack mounting, flush or 5" projection. KDA can also be wall mounted.
NIA Card
Power Input: -18 to -36 VDC (200 MA @24 VDC)
-36 to -72 VDC (150 MA @ 48 VDC)
Fuse: 1/4 Amp.
Operating Temperature Range: Option 01: 0 to +60 Degrees C.
Option 05: -30 to +70 Degrees C.
Humidity: 0% to 95% non-condensing
Electrical Interface: RS232 on collection port(KDA side)
Ethernet 10 Base-T on primary network port
Ethernet SLIP/PPP on secondary network port
Connectors: RJ-11 and RJ-45 Connectors on back panel
Protocols: DCPX on collection port.
SNMP on Ethernet ports.
SNMP Command Set: GET

Options & Model Numbers

Description Model Number
Network Interface Adapter (NIA)
Voltage: 0 = Wide Range (-18 to -72 VDC)
2 = -24 VDC
4 = -48VDC