Portable test set
HP 37778A dual-standard, portable test instrument meets the testing needs of both Sonet and SDH transmission equipment. The unit performs functional tests on synchronous-line multiplexers, line regenerators and digital crossconnects, providing overhead analysis, error and alarm generation, pointer generation and analysis, and frequency offset and measurement. It provides bulk-mapped, concatenated payloads for STS-16c and OC-48c and includes payload mapping for 2-, 34- and 140-Mbit/sec PDH applications in addition to 155-Mbit/sec (STM-1) transmit/receive capability.
Hewlett-Packard Co., Santa Clara, CA