Tektronix 475A - External Horizontal Gain Check; Peak-To-Peak Voltage Measurements-Ac

Push the TRIG VIEW button and hold it in. Use the
DELAY TIME POSITION control to move the reference
point to the center horizontal graticule line (see Fig. 13,
Point A). Use the ALT DELAY control to move the time-
measurement point to the center horizontal graticule line
on the next cycle (see Fig. 13, Point 8). Verify the readout
is 16.49 to 16.84 and the ms lamp is lit.
1738-15
Fig. 13. DM44 timing check.
External Horizontal Gain Check
(If X-Y operation is to be used.) Use steps 1 through 3 of
the Basic Oscilloscope Displays procedure for obtaining a
Normal Sweep Display of the calibrator square-wave
voltage waveform; then, set the TIME/DIV switch to X-Y.
With the calibrator signal connected to the CH 1 OR X
input connector and the CH 1 VOLTS/DIV switch set to
50 mV, the crt display should be two dots separated
horizontally by 5.75 to 6.25 divisions.
PEAK-TO-PEAK VOLTAGE
MEASUREMENTS—AC
Obtain a Normal Display. Make sure the VAR
VOLTS/DIV control is in the calibrated detent. Vertically
position the display so the lower portion coincides with a
horizontal graticule line (see Fig. 14, Point A). Horizontally
position the display so one of the upper peaks coincides
with the center vertical graticule line (see Fig. 14, Point B).
Measure the vertical defiection from peak-to-peak (Point
A to Point B).
@ 475A/DM44 Operators 31