User Manual DDS200 Digital Demodulation System 070-9952-00

Manual OperationNOTE. The two counters, MPEG DATA ERROR CNT and MPEG DATA CORRCNT, are reset to 0 when the alarm register is cleared. If in the course of timemore than 1000 entries are made in the alarm register, the MONITORING TIMEin the register and the statistical calculation are referred to the period indicatedin the register, but the counters are not reset. They show the total count since theregister was cleared last, even if there are more than 1000 entries in the alarmregister.With the aid of the statistics, the user is able to assess the QAM signal over anextended period of time. The error indication in % is important as a proof for thecorrect functioning of a transmission link.Printing the Register. The currently displayed screen content can be printed anytime by pressing the HARDCOPY key. A precondition is that the printer driverin the SETUP: PRINTER menu has been set correctly.Since the alarm register (or parts thereof) can be printed in so many ways, theselectable modes are offered in a separate menu. This menu can be displayed bypressing the ALARM key in the MAIN FUNCTION block and then the PRINTsoft key. The menu shown in Figure 2–35 is displayed.Figure 2–35: ALARM: PRINT menu in the QAM demodulator modeDDS200 Digital Demodulation System User Manual 2–43