CENTRAL PROCESSOR PACKAGE INSTALLATION

2.9 WIRING OF SURGE ARRESTOR BOXES

Typically, connectors P9 through P13 on the stan- dard I/O panel (connectors P4 through P6 on 14 card cabinets) will be assigned for RTL I/O connectors.

1.Connect the female end of an A600950A, 25 pair cable to the connector in the surge box. Dress the cable as shown in Fig. 2-10. above. Use a split rub- ber grommet (furnished) to protect the cable where it passes through the surge box bottom flange. Connect the male end of this cable to the appropri- ate mating connector in the CPP cabinet. Use a CHAMP LOC spring (furnished) to secure each end of the connector. Coil and tie any excess cable - do not shorten the cable length.

2.Use 25 pair inside telephone cable to connect the surge arrestor block to an RTL demarcation point punch block following the standard color code assignment shown in Table 2-3. Since not all

installations use all pairs present on the surge arres- tor block, some installers prefer to use individual 24 gauge solid twisted pair cross-connect wires rather than a 25 pair cable. Dress the cable or wire pairs using standard telephone wire management devices and techniques to effect a neat installation. The use of bridging clips on each demarcation block is strongly recommended to allow the console system to be isolated for troubleshooting. The connections are defined in reports titled RTL I/O PAIR ASSIGNMENTS. A separate report is provided for each I/O connector.

3.Be sure to replace the lids on all surge arrestor boxes. It is suggested that you place a copy of the pair assignments for each box inside the box for future reference.

Figure 2-12 SURGE ARRESTOR BOX WIRING

 

February 1996

2-11

Part No. 004-3039-274

Page 20 Page 22
Page 21
Image 21
EFJohnson VR-CM50 manual Wiring of Surge Arrestor Boxes, Surge Arrestor BOX Wiring
Page 20 Page 22

VR-CM50 specifications

The EFJohnson VR-CM50 is a state-of-the-art mobile communications solution designed for first responders and public safety agencies. This versatile device is engineered to enhance communication efficiency and reliability, ensuring that users can stay connected in critical situations.

The VR-CM50 features a rugged design, built to withstand the harsh environmental conditions often encountered by emergency personnel. It meets military specifications for durability, including shock, vibration, and water resistance. With a lightweight and compact form factor, the VR-CM50 is easy to install in various vehicles without compromising the available space or mobility.

One of the standout technologies in the VR-CM50 is its advanced digital trunking capability. The device operates on multiple frequency bands, allowing for seamless communication across various networks. This flexibility is crucial for interoperability among different agencies, especially during joint operations or mutual aid scenarios.

The VR-CM50 also offers enhanced audio quality, ensuring that users can clearly hear and be heard even in noisy environments. Its digital signal processing technology minimizes background noise and enhances voice clarity. This feature is vital for first responders who often communicate in high-pressure situations where every word counts.

Another key characteristic of the VR-CM50 is its integration with a wide range of communication systems. The device is compatible with various communication protocols, enabling connection with existing infrastructure. This adaptability allows agencies to leverage their current resources while benefiting from the latest technological advancements.

The VR-CM50 promotes user safety with built-in emergency features. It includes a dedicated emergency button that, when pressed, instantly alerts dispatchers and other personnel of the user's location and status. This feature is particularly beneficial for officers on patrol or in isolated areas, enhancing their safety during critical incidents.

Furthermore, the VR-CM50 supports GPS capabilities, providing real-time location tracking for fleet management and situational awareness. This technology not only improves operational efficiency but also enhances coordination during complex incidents.

In summary, the EFJohnson VR-CM50 is a robust and feature-rich mobile communication solution tailored for public safety professionals. Its rugged construction, advanced digital trunking, superior audio quality, and integration capabilities make it an essential tool for effective communication in the field. By fostering interoperability and user safety, the VR-CM50 stands as a reliable choice for agencies striving to enhance their emergency response capabilities.
Top Page Image Contents