User manual

CANbus Trigger, Decode, and Measure

CANbus-TD-TDM-OM-E RevB

In addition to the Histogram graphing capability, there are also 19 different measurement

parameters that apply specifically to Histograms. These are listed below (more information is

contained in Appendix D):

 fwhm - full width (of largest peak) at half the maximum bin

 fwxx - full width (of largest peak) at xx% the maximum bin

 hist ampl - histogram amplitude between two largest peaks

 hist base - histogram base or leftmost of two largest peaks

 hist max - value of the highest (right-most) populated bin in a histogram

 hist mean - average or mean value of data in the histogram

 hist median - value of the x-axis of a histogram that divides the population into two

equal halves

 hist min - value of the lowest (left-most) populated bin in a histogram

 hist rms - rms value of data in histogram

 hist sdev - standard deviation of values in a histogram

 hist top - histogram top or rightmost of two largest peaks

 max populate - population of most populated bin in histogram

 mode - data value of most populated bin in histogram

 percentile - data value in histogram for which specified `x'% of population is smaller

 peaks - number of peaks in histogram

 pop @ x - population of bin for specified horizontal coordinate

 range - difference between highest and lowest data values

 total pop - total population in histogram

 x at peak - x-axis position of specified largest peak

These measurement parameters are available in the Statistics category in the measurement

selection pop-up dialog.

General Setup of CANbus TDM Parameters

There are two different ways to set up CAN related measurements. The easiest way is to use the

Measure tab in the CAN Analysis dialogs to access the CAN Measure dialog. This dialog is

specifically tailored to meet the needs of an engineer who is debugging CAN-based systems. It

contains different categories of CAN, pulse, statistical, etc. measurement parameters that are

commonly used to measure CAN system performance.

Setting Up CANbus Parameters using the Serial Decode option

1. Touch the Measure/Graph Setup tab in the CAN Serial Decode dialogs. There are four

parameter measurements displayed (P1 through P4).