Performance Tests
4–78 TDS 684A, TDS 744A, & TDS 784A Service Manual
HPress the side-menu Fields.
HUse the keypad to set the number of fields to 1 (press 1, then
ENTER).
HPress the side-menu Sync Width.
HUse the keypad to set the width to 400 ns (press 400, SHIFT, n,
then ENTER).
HPress the side-menu –more– 1 of 2. Then press V1 Start Time.
HUse the keypad to set V1 start time to 10.10 ms (press 10.10, SHIFT,
m, then ENTER).
HPress the side-menu V1 Stop Time.
HUse the keypad to set V1 stop time to 10.50 ms (press 10.50, SHIFT,
m, then ENTER).
HPress the main-menu Type pop-up to select Edge.
HPress HORIZONTAL MENU.
HPress the main-menu Record Length.
HSelect the side-menu 1000 points in 20div. If needed, first press the
side-menu –more– until you see the appropriate side-menu item.
HTurn the HORIZONTAL POSITION knob to position the trigger
‘T’ two divisions to the left of the center screen.
HPress MEASURE.
HIf needed, press the main-menu Select Measrmnt.
HPress the side-menu Negative Width.
HPress the side-menu Period.
b. Set up the pulse generator (PG502) for Sync Duty Cycle Test.
HSet PULSE DURATION to 50 ns.
HSet PERIOD to 10 ms.
HSet OUTPUT (VOLTS) to –1 for LOW LEVEL and +1 for HIGH
LEVEL.
HDepress the COMPLEMENT button.
HBe sure BACK TERM is depressed (in).