Tektronix 47E5A

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 DLY'D. Slightly
readjust the t::. TIME control to superimpose the displayed
waveform portions (see Fig. 30B). The DELAY. TIME
POSITION control 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:
1/ms Lamp
1/11s Lamp
Multiplier
OFF OFF Hz
ON
OFF
kHz
OFF ON
MHz
A blinking display indicates an over-range condition .
This occurs on measurements as follows:
A Time/Dlv Set To Decade Spacing Between Intensified
Multiples
of Zones Less Than
0.25 DIV
2
0.5 DIV
5
1.0 DIV
TIME DIFFERENCE BETWEEN
TWO PULSES FROM
DIFFERENT SOURCES (DM44)
Set controls as follows:
A SOURCE
VERT MODE
HORIZ DISPLAY
B SOURCE
B TIME/DIV
VAR TIME/DIV
CH 1
ALT
A INT
STARTS AFTER DELAY
3
or 4 positions more
cw than A TIME/DIV
Detent position
58
475A/DM44 Operators
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