December 20, 2004

Chapter 1: Product Description

In the HMU/HLU configuration, for example, for detailed information about the different types of alarms, refer to the “Managing Alarms” section in the HMU-319,H2TU-C-319, or H4TU-C-319 User Manuals. Specifically, the manual describes the types of alarms the HMU-319 reports, when the alarm occurs, and how to respond to the alarm using the ACO.

Table 1-2. Alarms Wire-wrap Field Functional Description

Alarm

Alarm Description

Function

CRIT AUD

Critical Audible

There is a critical alarm active on the HMS-318

 

 

List 3 shelf. Connect this relay to the critical

 

 

alarm audible indicator of the CO alarm

 

 

system.

 

 

 

CRIT VIS

Critical Visible

There is a critical alarm active on the HMS-318

 

 

List 3 shelf. Connect this relay to the critical

 

 

alarm visual indicator of the CO alarm system.

 

 

 

MAJ AUD

Major Audible

There is a major alarm active on the HMS-318

 

 

List 3 shelf. Connect this relay to the major

 

 

alarm audible indicator of the CO alarm

 

 

system.

 

 

 

MAJ VIS

Major Visible

There is a major alarm active on the HMS-318

 

 

List 3 shelf. Connect this relay to the major

 

 

alarm visual indicator of the CO alarm system.

 

 

 

MIN AUD

Minor Audible

There is a minor alarm active on the HMS-318

 

 

List 3 shelf. Connect this relay to the minor

 

 

alarm audible indicator of the CO alarm

 

 

system.

 

 

 

MIN VIS

Minor Visible

There is a minor alarm active on the HMS-318

 

 

List 3 shelf. Connect this relay to the minor

 

 

alarm visual indicator of the CO alarm system.

 

 

 

SYS ID

System ID

There is a critical, major, or minor alarm active

 

 

on the HMS-318 List 3 shelf. Connect this relay

 

 

to the equipment rack alarm indicator.

 

 

 

ACO

Alarm Cutoff

External Alarm Cutoff (ACO) function silences

 

 

active audible alarms (see “Alarm Cutoff

 

 

(ACO)” on page 1-6).

 

 

 

GND

Ground

External ground

 

 

 

EXT TEMP

External Temperature

Thermal control (digital temperature sensor).

 

Thermostat

Connect this pin to an external snap-action

 

 

thermostat to activate the fan relay. This

 

 

thermostat provides a switch closure to ground

 

 

that is sensed by the HMU-319.

 

 

 

NO COM FAN

Fan Control

The Fan Control manually disables a Fan

 

 

Assembly using the NO and COM fan control

 

 

contacts.

LTPH-UM-1261-01

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ADC T1MF2S04RA, HMS-318, LTPH-UM-1261-01 user manual Gnd

T1MF2S04RA, HMS-318, LTPH-UM-1261-01 specifications

The ADC LTPH-UM-1261-01, HMS-318, and T1MF2S04RA are exemplary devices tailored for advanced data communications and network management. Each product is designed with unique features, technologies, and characteristics that cater to various applications in the telecommunications sector.

The ADC LTPH-UM-1261-01 is a high-performance unit that excels in low power consumption while providing reliable data integrity. Equipped with advanced error correction capabilities, this device ensures the seamless transmission of data over long distances. One of its standout features is its ability to support multiple transmission protocols, making it highly versatile for various applications. Its compact design allows for easy integration into existing systems, enabling operators to upgrade without significant infrastructure changes.

On the other hand, the HMS-318 is renowned for its enhanced connectivity options. It supports multiple interface types, including Ethernet, Serial, and Fiber optic connections, making it a highly adaptable solution for a variety of network configurations. The HMS-318 comes with built-in security features like encryption and authentication protocols, which safeguard data against unauthorized access. Additionally, its user-friendly interface makes configuration simple, allowing network managers to swiftly deploy and manage the device within their ecosystems.

The T1MF2S04RA represents the cutting-edge of telecommunications technology, particularly in the realm of T1 line functionalities. It is engineered to optimize the management of T1 circuits, facilitating efficient bandwidth allocation and monitoring. The T1MF2S04RA also features state-of-the-art diagnostic tools that provide real-time analytics, allowing operators to quickly identify and rectify issues. Its robustness ensures minimal downtime, which is critical for maintaining the reliability of telecommunication networks.

In summary, the ADC LTPH-UM-1261-01, HMS-318, and T1MF2S04RA stand out in their respective domains due to their innovative technologies and features. From enhancing data integrity to providing extensive connectivity options and advanced diagnostic capabilities, these devices exemplify the strides made in modern telecommunications. They are indispensable tools for operators seeking to enhance their network performance and reliability in a rapidly evolving technological landscape. Each product not only meets the current demands of the industry but also provides a scalable foundation for future growth.