Tektronix 784A Uživatelský manuál stáhnout pdf (Strana 137)

Performance Tests

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

4–61

1. Install the test hookup and preset the instrument controls:

a. Hook up test-signal:

H Connect one of the 50 W cables to CH 1. See Figure 4–21.

H Connect the other end of the cable just installed to the female

BNC-to-clips adapter. See Figure 4–21.

H Connect the red clip on the adapter just installed to the PROBE

COMPENSATION SIGNAL on the front panel; connect the black

clip to PROBE COMPENSATION GND. See Figure 4–21.

Digitizing Oscilloscope

50  Coaxial Cable

Female BNC to

Clip Adapter

Black Lead

to GND

Figure 4–21: Initial Test Hookup

b. Initialize the oscilloscope:

H Press save/recall SETUP.

H Press the main-menu button Recall Factory Setup.

H Press the side-menu button OK Confirm Factory Init.

c. Modify the initialized front-panel control settings:

H Set the horizontal SCALE to 200 ms.

H Press SET LEVEL TO 50%.

H Use the vertical POSITION knob to center the display on screen.

H Press SHIFT; then press ACQUIRE MENU.

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

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Tektronix 784A Uživatelský manuál Strana 137