Lesson 3/Learning Event 3
the NORMAL TEST/DIAL TALK switch is in the DIAL TALK position, the test set
is set up to test dial circuits. If the NORMAL TEST/SELF CHECK switch is in
the SELF CHECK position the test set is in the self check mode and the
controller can check its operation for each test, frequency response, phase
jitter, etc.
(3) Digital display.
The digital display provides a three position
readout of quantitative information for all measurements.
The range,
polarity and decimal points are automatic.
The display also indicates
underrange and overrange by displaying a minus (-) sign for underrange and a
plus (+) sign for overrange.
It can display up to three parameter
measurements simultaneous, for example, when performing frequency response,
the specific frequency in hertz and the level of the frequency will be
displayed.
The transmit test signals may be monitored as well as the
receive signals by switching the DISPLAY CONNECTED TO switch to transmit
(TRMT). The indicator light on each side of the switch will indicate which
signal is being monitored, receive (REC) or transmit (TRMT).
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