Understanding the Input Terminals and Their Uses

Here we will discuss the two input terminals and the specific uses for each of them. It is important to remember that there are two specific modes in which the terminals are used.
The most common of these is when the CRO is used to measure input voltages by displaying them on the CRO display. From this point on we will address this situation as normal operation.
The second specific case regarding the use of the CRO in X-Y Mode. In this case both of the terminals must be used at the same time.

The Vertical Input:

If we first consider normal operation the Horizontal or X Input is referred to as Channel B. Under normal operation this input can be used in conjunction with or separately to channel A. Whether Channel A, B or both are used the selection can be done with the Mode Selector.
On the other hand when the CRO is being used in X-Y Mode, the input is referred to as the X or Horizontal Input and must be used in conjunction with the Vertical or Y Input.

If we first consider normal operation the Vertical or Y Input is referred to as Channel A. Under normal operation this input can be used in conjunction with or separately to channel B. Whether Channel A, B or both are used can be selected using the Mode Selector.
On the other hand when the CRO is being used in X-Y Mode, the input is referred to as the Y or Vertical Input and must be used in conjunction with the Horizontal or X Input.

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Revised: Friday, 17 July 1998