LAL Test Procedure

Once LAL is activated, the Model 2500 Series transmit output is connected to its own receiver. The “Test” LED should be lit. Follow these steps to complete the test:

1)Verify that the data terminal equipment is operating properly and can be used for a test. If a fault is indicated, call a technician or replace the unit.

2)Perform a BER (bit error rate) test on each unit using a separate BER tester (The Model 2500 Series has a built-in BER tester–see Section 5.4). If the BER test equipment indicates no faults but the data terminal indicates a fault, follow the manufacturer's checkout procedures for the data terminal. Also, check the interface cable between the terminal and the Model 2500 Series.

5.3.2REMOTE DIGITAL LOOPBACK (RDL)

The Remote Digital Loopback (RDL) test checks the performance of both the local and remote Model 2500 Series',and the communication link between them. Any characters sent to the remote Model 2500 Series in this test mode will be returned back to the originating device. For example, characters typed on the keyboard of the local terminal will appear on the local terminal screen after having been passed to the remote Model 2500 Series and looped back (see Figure 7, below).

Figure 7. Remote digital loop

RDL Test Activation

The RDL test may be activated in one of three ways:

1)Toggle the front panel “Local/Normal/Remote” switch DOWN to the “Remote” position.

(continued)

2)Activate the RL lead from the DTE (Note: in order to use this option, the DTE Loop Control option must be enabled–see Section 4.1.2). If you are not sure which pin is the RL lead, please

refer to the pinout diagrams in Appendix D.

3)From a terminal, first go to the Main Menu and select item 3 to display the Software Switch Menu (Section 4.2) In the Software Switch Menu, select item “d” to go to the Set Remote Digital Loop Menu (see below). To activate RDL, select item 1.

RDL Test Procedure

Once LAL is activated, the “Test” LED should be lit. Perform a BER (bit error rate) test on the system, using BER testers on both ends. If the BER test equipment indicates a fault and the Local Analog Loopback test was successful for both Model 2500 Series units, you may have a problem with the line between the CSU/DSUs. You should inspect the line for proper connections.

5.3.3 TELCO TESTING

The digital service provider’s central office can perform CSU Loop and DSU Loop diagnostic testing. These diagnostics allow the central office to evaluate circuit operation without making visits to a customer’s premises.

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Patton electronic 2500 Series LAL Test Procedure, Remote Digital Loopback RDL, RDL Test Activation, RDL Test Procedure
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2500 Series specifications

The Patton Electronics 2500 Series is a robust line of communication devices designed to facilitate seamless data transmission over various types of networks. Known for their reliability and versatility, these devices are particularly suitable for a wide range of applications, including enterprise networking, industrial automation, and telecom arrangements.

One of the main features of the 2500 Series is its ability to support both T1 and E1 circuits, making them ideal for environments that require flexible connectivity options. This adaptability allows businesses to leverage their existing infrastructure while also accommodating future expansion needs. Additionally, the series incorporates advanced line coding technologies, such as B8ZS and HDB3, ensuring efficient bandwidth usage and effective error correction.

The devices in the 2500 Series also include integrated network management features, enabling remote monitoring and configuration. With an intuitive web-based interface and support for SNMP (Simple Network Management Protocol), network administrators can easily manage multiple devices from a centralized location. This capability significantly reduces downtime and enhances overall network performance.

Another noteworthy characteristic of the Patton 2500 Series is its rugged design, which includes options for wall-mounting and outdoor installations. This durability makes them suitable for various environmental conditions, whether in a controlled data center or an exposed industrial setting. The series is also designed with energy efficiency in mind, helping enterprises reduce operational costs without compromising performance.

Furthermore, the 2500 Series offers dual power supply options, ensuring uninterrupted service in the event of a power failure. This redundancy is critical for mission-critical applications where constant connectivity is essential.

In terms of security, the Patton 2500 Series provides several encryption options, including support for secure tunneling protocols, safeguarding sensitive data against unauthorized access.

In conclusion, the Patton Electronics 2500 Series stands out as a comprehensive solution for modern communication needs, combining flexibility, durability, and advanced technological features. Whether for a small business or a large enterprise, these devices offer scalable solutions to meet the demands of contemporary networking environments.
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