Tektronix 2337, Инструкция по эксплуатации

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difference between waveform measurement points is 4.5
divisions.
Substituting the given values in the formula:
Time _ 50 ps/div x 4.5 div _
Difference 10
Phase Difference
In a similar manner to "Tim e Difference," phase com­
parison between two signals o f the same frequency can be
made using the dual-trace feature o f the 2337. This method
of phase difference measurement can be used up to the
frequency lim it of the vertical system. To make a phase
comparison, use the following procedure:
C H A N N E L 1 (R E F E R E N C E ) C H A N N E L 2
Figure 19. Time difference between two time-related pulses.
1. Preset instrument controls and obtain a Normal
Sweep Display, then set the A TRIGGER SOURCE switch
to CH 1.
2. Set both AC-GND-DC switches to the same position,
depending on the type o f coupling desired.
3. Using either probes or coaxial cables w ith equal time
delays, connect a known reference signal to the Channel 1
input and the unknown signal to the Channel 2 input.
4. Select either A L T or CHOP VERTICAL MODE,
depending on the frequency o f the input signals (or select
AUTO VER TICAL MODE if automatic selection is desired).
The reference signal should precede the comparison signal
in time.
@
2237 Operators
51