DESCRIBE THE BASIC ELECTRONIC TELEVISION TEST SIGNALS
Describe and identify five basic electronic television test signals.
Demonstrate competency of task skills and knowledge required for identification of
the test signals discussed in this lesson, by correctly responding to 80% of the
multiple-choice test questions covering five basic electronic television test
LEARNING EVENT 1:
DESCRIBE THE MULTIBURST SIGNAL AND GRAY-SCALE LINEARITY TEST
1. The multiburst signal consists of a white-flag reference pulse, followed by six
bursts of individually keyed sine waves in ascending frequency order. This signal
is useful as a quick systems check for rapid visual presentation of amplitude-
a. The basic block diagram of a multiburst generator is shown in Figure 3-1.
The unit normally receives composite sync and composite blanking from the local
sync generator. For field use, self-contained (internal) is usually available.
b. Horizontal drive is derived from incoming sync and used to trigger and
It is also used to generate a
white-flag pulse at the beginning of active horizontal sweep.
(1) Normally, the white-flag pulse width is adjusted for 8 microseconds.
trailing edge of this pulse triggers