Tektronix 475A - Time Difference between Two Pulses from Different Sources (Dm44); Time Difference between Two Pulses

measurement point to near the same horizontal graticule
line on the next cycle of the waveform (see Fig. 30A, Point
B).
Set the HORIZ DISPLAY switch to B DLYD. Slightly
readjust the A TIME control to superimpose the displayed
waveform portions (see Fig. 30B). The DELAY. TIME
POSITION contro! may need to be slightly readjusted to
keep the display on screen. The Readout and Scale Factor
Lamps indicate the time duration.
FREQUENCY MEASUREMENTS (DM44)
To measure frequency, use the same procedure as for
Time Duration Measurements except set the FUNCTION
switch to 1/TIME. With the display superimposed the
Readout and Scale Factor Lamps indicate the frequency.
The Scale Factor Lamps indicate the scale factor as
follows:
58 475A/DM44 Operators
A blinking displav indicates an over-range condition.
This occurs on measurements as follows:
A Time/Div Set To Decade Spacing Between Intensified
Multiples of
Zones Less Than
TIME DIFFERENCE BETWEEN
TWO PULSES FROM
DIFFERENT SOURCES (DM44)
Set controls as follows:
A SOURCE CH 1
VERT MODE ALT
HORIZ DISPLAY A INT
B SOURCE STARTS AFTER DELAY
B TIME/DIV 3 or 4 positions more
cw than A TIME/DIV
VAR TIME/DIV Detent position