Brief Procedures
TDS 420A, TDS 430A & TDS 460A Service Manual
4-13
H Pressing the side-menu
button Set to 50% triggers the probe-com-
pensation signal that you just left untriggered. (Leave the
signal triggered.)
d. Verify the delayed trigger counter:
H Press the main-menu button Delay by Time.
H Press the side-menu button Events, just below the Triggerable after
Time selection.
H Use the General Purpose knob to enter an event count of 325 events.
H Verify that the trigger READY indicator on the front panel flashes
about once every second as the waveform is updated on screen.
4. Remove the test hookup: Disconnect the standard-accessory probe from the
channel input and the probe-adjust terminal.
Equipment
Required
One 720 K or 1.44 Mbyte, 3.5 inch DOS compatible disk (formatted).
Prerequisites None
1. Preset the digitizing oscilloscope controls:
a. Insert the disk in the disk drive.
b. Press save/recall SETUP. Press the main menu button Recall Factory
Setup; then press the side menu button Ok Confirm Factory In it.
c. Set the horizontal SCALE to 200 s (one click clockwise). Notice the
horizontal readout now displays 200 s at the bottom of the screen.
2. Verify the file system works:
a. Press save/recall SETUP. Press the main menu button Save Curr ent
Setup; then press the side menu button To File.
b. Turn the general purpose knob to select the file to save. Choose
TEK?????.SET. With this choice, you will save a file starting with TEK ,
then containing five digits, and a
.SET extension. For example, the first
time you run this on a blank, formatted disk or on the Example Programs
Disk, the digitizing oscilloscope will assign the name
TEK00000.SET to
your file. If you ran the procedure again, the digitizing oscilloscope
would increment the name and call the file
TEK00001.SET.
c. Press the side-menu button Save To Selected File.
Verify the File System
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