The Modular Alarm System: Customized Large Capacity Network Elements

Alarm Distribution Shelf (ADS)
Design your own alarm system: Our modular systems feature pre-wired shelves, so you can change or add capacities simply by adding cards, with no rewiring required.

The Modular Alarm System allows you to configure large remote telemetry units for the exact capacity and functions you require. Many protocols are supported, including TL1. This system is great for central offices or sites with large quantities of discrete alarms (major, minor, environmental, security, etc.). The Modular Alarm System uses a unique Micro-LAN Channel for data communications between modules.

Communications Subassemblies for the MAS


202 subassembly

202 Modem Subassembly (1200 baud)

A communications subassembly for MAS modules that supports a 202T modem. Features include standard voice band operation and 1200 Baud data rate.

RS232 Subassembly

RS232 Subassembly

A subassembly for MAS modules that allows a whole shelf to communicate via a single RS232 connection, which in turns drives the Micro-LAN channel of the MAS shelf.

RS422 Subassembly

RS422/RS485 Subassembly

A subassembly for the MAS product line that allows the shelf to communicate via 4 wire RS422 or RS485. This interface accommodates transmission distances up to 4000 ft. Also can drive the Micro-LAN of the MAS shelf.

212 Modem Subassembly (1200 baud dialup)

A subassembly for MAS modules that allows the shelf to function as dialup remote. Features include "AT" command set and TRIP compatibility.

Shelf-Link Subassembly

A subassembly for MAS modules that must reside in each "slave" MAS card to connect it to the "master" MAS card via the Micro-LAN channel.

Shelves for the MAS

List of shelves for the MAS

12 pos wired shelf

400/TYPE 10 19" (12 pos) Wired Shelf

A 12 position 19" shelf that is used to mount MATs, CPMs, Fuse modules and other MAS cards. The shelf is pre-wired for the Micro-LAN channel, power and a fuse module. This unit comes with reversible ears and is suitable for 23" rack mounting.

14 pos wired shelf

400/Type 10 23" (14 pos) Wired Shelf

Like the 12 Position shelf, but wider format accepts 2 more modules.

3 position shelf

400/TYPE 3 position Pre-wired shelf

A 19" 3 position shelf that may be use house MATs, CPMs, and other MAS cards. Comes pre-wired for GROUND and the Micro-LAN communication channels. Reversible ears are also included for mounting in a 23" rack.

Application Specific Shelves

DPS will engineer and assemble for you any application specific shelf assembly. Application specific shelves include backplane wiring and connectorized back panel. Contact sales for a price quotation.

Other Alarm Monitoring Products

DPS offers you a full line of network monitoring choices with the Modular Alarm System and our array of fixed-size remotes, ranging in capacity from 8 to 256 alarm points, along with ASCII, TBOS and analog accessories. Add the T/MonXM & IAM for mediation & polling and the T/GrafX for display functions and you have one stop shopping for complete solutions.


MAT alarm collection device

The MAT is an alarm collection device that supports 32 ground closure alarm inputs, 4 form "C" control relays and 2 "bonus" alarm points that can detect -BATT and RS232 level alarms. The MAT is designed to work in concert with other MAS modules in a 400-type shelf to form an economical high density alarm solution.

The MAT is available in several voltages & models. Standard version : Uses non-latched relays. Latching Relay Version: Same as basic MAT with magnetically latched relays to maintain relay states in case of a power loss. Ideal for applications requiring one of two relays to be active, such as video switching or microwave application.


Control Processing Module

The CPM provides 16 control relay outputs and 8 alarm inputs for remotely activating external devices upon command from T/MonXM. The CPM supports momentary, latch/release, as well as select before operate commands. The CPM works in concert with other CPM s for applications that require large amounts of controls. The CPM is available in several voltages & models.



View other Modular Alarm System pieces:

Modular Alarm Transmitter (MAT)

An alarm collection device that supports 32 ground closure alarm inputs.


TL1 Responder Module (64 & 128)

Mediates TL1 Protocol between conventional alarms and TL1 OS or ASCII Terminal.


8-Port TBOS Collector

Collects portions of up to 8 TBOS ports and combines into one TBOS port and also converts TBOS data into one DCPF Port.


4-Port MUX

Combines up to 4 TL1 ports into one TL1 port.


TBOS-ASCII Converter (TAC) 400-Type

TAC's work in pairs to transport TBOS and ASCII data on a common channel, reducing circuit requirements.


13 Position Fuse Module with Fuse Alarm

A fuse module that is designed to individually protect 13 cards in a 400 type shelf.



TL1 Responder module

Mediates TL1 Protocol between conventional alarms and TL1 OS or ASCII Terminal. Uses Micro-LAN Channel to interface discrete alarms through MATs, control points through CPM s and TBOS ports through 8-Port TBOS Collectors. Combine with these modules in a 400-type shelf to make a versatile mediation package. Includes software for TL1 data base. Capacity is 4096 alarm points for 64 display model, 8192 alarms for 128 display model.








8-Port TBOS Collector

Collects portions of up to 8 TBOS ports and combines into one TBOS port. Also converts TBOS data into one DCPF Port. Each or the 8 ports can support up to 8 displays (512 points). Combining into one TBOS port is limited to a total of 8 displays, which can be remapped from the input port displays to different displays on the common port. Combining into one DCPF port can support the full complement of 8 displays (512 points) per input port, which can be remapped to 64 displays (4096 points) on the common port.








The TL1 4-Port Mux is not currently available.

If you have need for a product like this, call 1-800-693-0351 to discuss your options with a sales engineer. Alternatively, you may view available DPS products...
TL1 4-Port Mux

Combines up to 4 TL1 ports into one TL1 port. Observes delineating semi-colon at end of each TL1 data packet to store and stack incoming data. Incoming packets are stored in 64K buffer, then sent out common port one-at-a-time. Packets from interrogator side are sent out all ports.


The TBOS-ASCII Converter (TAC) is not currently available.

If you have need for a product like this, call 1-800-693-0351 to discuss your options with a sales engineer. Alternatively, you may view available DPS products...
TBOS-ASCII Converter (TAC)

TAC s work in pairs to transport TBOS and ASCII data on a common channel, reducing circuit requirements. A "Slave-End" TAC in a stand-alone package combines the TBOS and ASCII. A "Master-End" TAC splits the TBOS and ASCII data to two ports for distribution to a TBOS alarm system and an ASCII terminal. Locate several 400- Module TAC s in a central shelf, where lines from slave TAC s terminate.








MAS Subassembly

A fuse module that is designed to individually protect 13 cards in a 400 type shelf. Unit contains a fuse alarm that will trigger a relay should any fuse blow. It also has a visual alarm indicator. Provides 2 separate input power bus lines.

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