Tektronix TDS500C Manuel d'utilisateur télécharger pdf (Page 57)

Performance Tests

TDS 500C, TDS 600B & TDS 700C Performance Verification and Specifications

1–41

H Align one V bar cursor to the time reference point of the left-most

waveform edge and the other cursor to the time reference point of the

right-most waveform edge by rotating the General Purpose knob.

(Press SELECT to switch between the two cursors). See Figure

1–11 on page 1–41.

H Read the measurement results at the D: cursor readout, not the @:

readout on screen.

Locate the time reference

points for these waveforms.

Display the waveforms.

Read results.

Align each cursor to the time

reference points

Figure 1–11: Measurement of channel delay – TDS 684B shown

g. Check against limits: CHECK that the cursor readout on screen is

≤100 ps for the TDS 600B or ≤50 ps for the TDS 500C/700C.

h. If the channel skew is within the limits, enter time on the test record and

proceed to step 3. Otherwise, proceed with steps i through p.

i. Use the cursors to measure the skew from CH1 to CH2, CH1 to CH3,

and CH1 to CH4 (use AX1 and AX2 instead of CH3 and CH4 if your

TDS model is so equipped). Write down these three numbers in the first

measurement column of Table 1–5. Note that these numbers may be

either positive or negative.

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 147 148

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Tektronix TDS500C Manuel d'utilisateur Page 57