Instructions

AP033 Active Differential Probe

Reference Information ................................................................................................ 46

Differential Mode and Common Mode......................................................................46

Differential Mode Range and Common Mode Range ................................................46

Common Mode Rejection Ratio .................................................................................47

Certifications ..............................................................................................................48

Warranty ....................................................................................................................50

Technical Support ......................................................................................................51

Notes .......................................................................................................................... 52

Figures

Figure 1, Typical CMRR Graphs ...........................................................................................7

Figure 2, channel setup dialog with AP033 probe dialog behind it. ...................................8

Figure 3, AP033 Equivalent Input Model ..........................................................................10

Figure 4, AP033 Block Diagram .........................................................................................11

Figure 5, AP033 probe dialog with probe controls and attributes. ...................................13

Figure 6, Effect of Differential Offset ................................................................................15

Figure 7, Layout dimensions for test fixtures ....................................................................16

Figure 8, ÷10 Attenuator Adjustment Locations ...............................................................23

Figure 9, AP033 Logic Board..............................................................................................38

Figure 10, Probe Tip Adjustment Locations ......................................................................39

Figure 11, Amplifier Board Adjustment Locations ............................................................39

Figure 12, ÷10 Effective Gain Indicator .............................................................................40

Figure 13, Common Mode and Differential Mode Range .................................................47

Tables

Table 1, Dynamic ranges and input capacitance at different attenuator settings ............12

Table 2, Recommended settings to obtain desired equivalent Volts/Division .................14

Table 3, Performance Verification Test Equipment ..........................................................24

Table 4, Adjustment Test Equipment ................................................................................35