Data Line Analyzer for the frequency range of 200 Hz to 4 kHz (20 kHz). Measures all important parameters as prescribed in CCITT M.1020, M.1025, M.1030, M.1040 Measurements in accordance with CCITT 0.61, 0.62, 0.71,0.81,0.91,0.95,0.111,0.132 High resolution graphical display: 256 x 128 pixels Display of group delay and attenuation distortion curves. 10 pairs of curves stored in memory 300 time-stamped events stored in memory Autoprint of event counters Printer/plotter does not need to be taken to site User programmable tolerance masks via keyboard Pre-programmed CCITT tolerance masks Softkey, menu-driven operation; stored setups V. 24 / V. 28 interface, fitted as standard, used for graphics printers, character printers or remote control Screen dump facility