Description
Spirent – SX12 Features & Specifications:
Typical simulator applications include testing the operation, performance and reliability of multiplexers, bridges, encrypters, network applications and other communications hardware and software.
When used for link simulation, these simulators physically connect directly between two pieces of equipment to replace conventional data links such as satellite connections, WANs or telephone networks. They can also be used in line with a real data link to add additional delays or errors or to simulate the effects of adding an additional link to the system.
The front panel has a two line by 40-character display panel for user prompts and to display the current settings. The front panel also has 28 keys for entering parameters.
Full-Duplex Operation
Each simulator has two separate channels to simulate the bi-directional characteristics of a full-duplex data link. Each channel operates independently and has both transmit and receive functions. The SX/13a and SX/14 models
also permit different delay and error settings for each direction of the full-duplex data stream. Bypass and loopback modes can be selected whenever standard bi-directional flow is not required.
Delay Generator
Each channel uses a variable length first-in-first-out delay buffer with user-selectable delay and data rate parame-ters. These parameters set the length of this buffer which in turn determines the amount of time it takes data to pass through each channel. The maximum delay length depends on the data rate (lower data rates permit longer maximum delays). At the lower rates, delays up to 9,999 ms (just under 10 seconds) are possible. Delays can be
specified in milliseconds or bits depending on the measurement requirements of the test.
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