The MP1550A is a small PDH/SDH analyzer. Despite its size, it has all the measurement functions necessary for evaluation PDH/SDH systems like bit errors, alarms, pointers, performance, jitter, and wander. It can be carried easily by hand and is ideal for pre-shipment inspection on production lines, connecting tests at construction sites, acceptance tests, periodic maintenance, and other tasks. Features All PDH/SDH System Tests Large, Easy-to-Read Color LCD Built-in Printer and Floppy Disk Drive In-Service and Out-of-Service Measurements