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Performance Tests

1–84

TDS 500D, TDS 600C, TDS 700D & TDS 714L Performance Verification and Specifications

c. Check 60 Hz rejection:

H Use the keypad to set the horizontal scale (/div) to 50 ms (press 50,

SHIFT, m, then ENTER).

H Reconnect the output of the signal generator. Connect the composite

signal connector of the PAL signal source (labeled COMPST on the

TSG 121) to a 75 W cable and a 75 W terminator. Connect both

signals to the CH1 input through a BNC T. See Figure 1–32.

H Press VERTICAL MENU.

H If needed, press the main-menu Fine Scale.

H Use the keypad to set fine scale to 500 mV (press 500, SHIFT, m,

then ENTER).

H Connect another composite signal connector of the PAL signal

source (labeled COMPST on the TSG 121) through a 75 W cable

and a 75 W terminator to the CH2 input. See Figure 1–32.

PAL signal

source

BNC T connector

75 W terminators

Oscilloscope

50 W cable

Signal Generator

75 W cable

75 W Cable

COMPST

Output

Figure 1–32: Subsequent 60 Hz Rejection test hookup

H CONFIRM that the TRIG’D LED stays lighted and that the

waveform on screen is stable. In other words, be sure the waveform

does not move horizontally or vertically. Also, confirm that the

waveform on the screen has one positive pulse and a number of

negative pulses. See Figure 1–33.

H Disconnect all test equipment from the oscilloscope.

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Tektronix TDS 700D Technical Reference

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