| 摘要 |
<p>A test apparatus (T) is designed for use with a TPON system including a head-end station (1) connected via a fibre optic network (3) to a plurality of terminations (2). The test apparatus (T) is a self-contained unit including a connection for linking the apparatus to a termination (2), a first detection circuit which detects status signals generated by the termination (2), and a second detection circuit which detects alarm signals generated in the head-end station and transmitted to the termination (2) in a downstream data frame. The test apparatus (T) in response to the first and second test circuits provides an output which indicates the condition of the termination (2). In one example, a series of indicator lamps formed on the housing for the test apparatus are lit to provide the appropriate output.</p> |
