Tektronix 475A - Page 67

Connect the reference signal to the CH 1 input and the
comparison signal to the CH 2 input. Connect the signals
to the inputs with cables or probes having equal time
delays.
Adjust the DELAY TIME POSITION control to move the
reference point to the desired spot on the reference (CH 1)
display (see Fig. 31A, Point A). In the ALT vertical mode
the reference point appears on the CH 1 display while the
time-measurement point appears on the CH 2 display.
CHANNEL 1 (REFERENCE) CHANNEL 2
AMPLITUDE +
' MEASURE
— TIME
i
INTENSIFIED.
FROM
A
TO
B
ZONES © że
is x eee VD Pee Ji an
t E
f HORIZONTAL |
I DIFFERENCE 1
Adjust the A TIME control to move the time-
measurement point to the desired spot on the CH 2 display
(see Fig. 31A, Point B).
Set the HORIZ DISPLAY switch to B DLV'D. Slightly
readjust the DELAY TIME POSITION and A TIME controis
to superimpose the waveforms (see Fig. 31B). The
Readout and Scale Factor Lamps indicate the time
difference.
MR AL ee
— 'ch2 2 i
(CH 1 SIGNAL |
„JV superimpose
1 LEADING EDGES
TEONE
(465/DM-0-10)2039-32 |
Fig. 31. Time difference between two pulses from different sources.
475A/DM44 Operators 59