|
|
The HP 3788A error performance analyzer is a low-cost, portable, bit-error-rate test set for installation and maintenance of digital transmission equipment designed to CEPT standards. It uses unframed test patterns to measure binary errors at 2048, 704 kb/ s and 64 kb/ s (codirectional interface) and code errors at 2048 and 704 kb/ s, in digital data circuits, lines and multiplexers. The HP 3788A performs basic measurements for fast circuit testing, and powerful G ,821 error performance analysis for long-term monitoring. CCITT Rec. G.821 analysis provides standard quality-of-service measurements, while user-definable analysis allows G.821 type thresholds to be set appropriately for the transmission medium, for example radio or fiber. Long-term measurement analysis results can be stored internally and then either logged to an RS-232-C-compatible printer or viewed on the display. G.821 Analysis Maximum and average error rate, error seconds (ES, %ES), severely errored seconds (SES, %SES), degraded minutes (DM, %DM), unavailable seconds (US, %US), alarm seconds (ALMS, %ALMS). All measurements are made simultaneously. Threshold Analysis: Provides selecta ble analysis interval, error count, and error rate logging thresholds, Results: EC, Max ER, Av ER, EI, %EI , SET, %SEI.
|