The KCRC TechNet Puzzles For 2021

(Click Here For TechNet Puzzles for 2017)

(Click Here For TechNet Puzzles for 2018)

(Click Here For TechNet Puzzles for 2019-2020)

The KCRC TechNet Puzzle for January 27, 2021

This is the block diagram of a

A) phase locked loop
B) transverter
C) voltmeter
D) frequency meter

 

 

The KCRC TechNet Puzzle for January 13, 2021

Which control on an oscilloscope determines the speed at which the trace moves from left to right?

A) X shift
B) Timebase.
C) Y gain
D) Brilliance

And now for the answer to our January 13, 2021 TechNet Puzzle

(It is in “Invisotext” and will be visible if you highlight the area below!)

You have to keep in mind what an oscilloscope is: a display of amplitude (in the Y-axis), over time (the X-axis). The X-shift and Y-shift knobs only move the display to another part of the display – they do not alter any amplitude or time-based signals.

The Brilliance knob does not alter the time-based signals or the amplitude – it just makes the display brighter or dimmer, depending upon its setting.

The Y-gain alters the deflection of the image for a given amplitude. The higher the Y-gain, the smaller a change will be visible on the display.

The X-shift, the Y-gain, and the brilliance controls do not affect the speed at which the trace moves from left to right.

The only remaining answer, ‘B’ Time base changes the rate that the trace sweeps the X-axis as a function of time.

So, ‘B’ Time base is the correct answer!