Performance Tests
1–76 TDS 500C, TDS 600B & TDS 700C Performance Verification and Specifications
Figure 1–34: 60 Hz Rejection test result – TDS 684B shown
6. Check Line Count Accuracy.
a. Set up oscilloscope for Line Count Accuracy Test:
HPress WAVEFORM OFF.
HPress CH1.
HPress HORIZONTAL MENU.
HPress the main-menu Record Length.
HPress the side-menu –more– until you see the appropriate menu.
HPress the side-menu 5000 points in 100divs.
HPress the main-menu Horiz Scale (/div).
HUse the keypad to set the horizontal scale to 200 ns (press 200,
SHIFT, n, then ENTER).
b. Check Line Count Accuracy:
HConnect a composite output signal from the rear of the PAL signal
source (labeled COMPST on the TSG 121) to the CH1 input
through a 75 W cable and a 75 W terminator. See Figure 1–35.