Tektronix 784A Manuel d'utilisateur télécharger pdf (Page 112)

Performance Tests

4–36

TDS 684A, TDS 744A, & TDS 784A Service Manual

f. Measure the test signal:

H Set the frequency of the generator, as shown on screen, to the test

frequency in Table 4–4 that corresponds to the vertical scale set in

substep d. See Figure 4–8.

H Set the horizontal SCALE to the horizontal scale setting in

Table 4–4 that corresponds to the vertical scale set in substep d.

Press SET LEVEL TO 50% as necessary to trigger the signal.

H Read the results at the CHx Pk-Pk readout, which will automatically

measure the amplitude of the test signal. See Figure 4–8.

Set the generator

(reference) frequency to

the test frequency from

Table 4–4.

Set the horizontal scale

from Table 4–4.

Read results.

Figure 4–8: Measurement of Analog Bandwidth

g. Check against limits:

H CHECK that the Pk-Pk readout on screen is within the limits listed

in Table 4–4 for the current vertical scale setting.

H Enter voltage on test record.

H When finished checking, set the horizontal SCALE back to the

50 ns setting.

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Tektronix 784A Manuel d'utilisateur Page 112