Agilent Technologies U2751A manual Switch Control, 1 Switch matrix concept

Operation and Features 2

Switch Control

A matrix switch connects multiple inputs to multiple outputs. A matrix is arranged in rows and columns. For example, the U2751A is a 4×8 matrix that can be used to connect four sources to eight test points as shown in Figure 2- 1.

Any column can be connected to any row by activating the corresponding relay that connects the column to the row as shown in Figure 2- 1. Each cross-point relay on this module has its own unique channel label representing the row and column. For example, channel 302 represents the cross-point connection between row 3 and column 2.

Be aware that it is possible to connect more than one source to the same point with a matrix. It is vital to make sure that these connections do not create dangerous or unwanted conditions.

Note: Three-digit channel numbers are derived from the intersection of the rows and columns, with the last two digits representing the columns. The intersection shown represents channel 202

(Row 2, Column 2)

Figure 2-1Switch matrix concept

U2751A User’s and Service Guide 33