Tektronix 784A Bedienungsanleitung PDF herunterladen (Seite 127)

Performance Tests

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

4–51

H Press HORIZONTAL MENU.

H Press the main-menu button Time Base.

H Press the side-menu buttons Delayed Only and Delayed Trigger-

able.

H Set D (delayed) horizontal SCALE to 500 ms.

b. Select the Delayed trigger system:

H Press SHIFT; then press the front-panel DELAYED TRIG button.

H Press the main-menu button Level.

c. Measure the test signal: Press the side-menu button SET TO 50%.

Read the measurement results in the side (or main) menu below the label

Level.

d. Check against limits: Do the following subparts in the order listed.

H CHECK that the Level readout in the side menu is within 9.863 V to

10.137 V, inclusive, for the TDS 684A or is within 9.9393 V to

10.1147 V, inclusive, for the TDS 7XXA.

H Enter voltage on test record.

H Press the main-menu button Slope; then press the side-menu button

for negative slope. See icon at left. Press the main-menu button

Level. Repeat substep c.

H CHECK that the Level readout in the side menu is within 9.863 V to

10.137 V, inclusive, for the TDS 684A or is within 9.9393 V to

10.1147 V, inclusive, for the TDS 7XXA.

H Enter voltage on test record.

4. Disconnect the hookup:

a. First set the output of the DC calibration generator to 0 volts.

b. Disconnect the cable from the generator output at the input connector of

CH 1.

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Tektronix 784A Bedienungsanleitung Seite 127