RadiMation Application Note 114

How to measure data from the EUT using the Configurable AD Convertor device driver

This Application Note explains how a configurable AD convertor can be used to monitor an EUT. With the AD convertor, any type of signal can be monitored and plotted within RadiMation during a test.

1. First the AD convertor must be configured so values can be read within RadiMation.
2. Second the value must be plotted using the correct unit types.

1 Configuring the AD convertor

1.1 Specify the communication type

First the communication type must be configured for the AD convertor.

1.2 Configure the initialization of the device

Reset

The reset code that needs to be send to device. When left blank no command will be send.

Init	The Init code that needs to be send to device. When left blank no command will be send.

Get Id

The code that needs to be send to device to get the identification back. A common used SCPI command is *IDN?. When left blank no command will be send.

1.3 Configure the data readout of the device

Trigger and Reading

Trigger The command need to trigger the measurement. A common used SCPI is *TRG. When left blank no command will be send. Read Back In the read back the returned information is defined. This is different for every type of machine there for RadiMation® used regular expressions to understand the format. A good regular expression for finding the first number in scientific notation in a text is: ([+-]?[0-9]*\.?[0-9]+([eE][+-]?[0-9]+)?) For more possibilities see the example section

Trigger and Reading

Minimum value The lowest value that can be measured with this device. The value must be the same as filled in the EUT window. Maximum value The highest value that can be measured with this device. The value must be the same as filled in the EUT window.

1.5 Examples

Received information	Regex	RadiMation Readout	Note
U_L_N 325	(-?[0-9.,Ee-]+)	325	Takes the first number.
I_L1;12.34	;(-?[0-9.,Ee-]+)	12.34	Takes the first number after ";".
THD_U_L1;;14,5	;;(-?[0-9.,Ee-]+)	14.5	Takes the first number after ";;".
AC_FREQ;Channel1;1.23E3	;*;(-?[0-9.,Ee-]+)	1230	Takes the first number after the appearance of a second ";".

Read backs can always be tested trough the "Validate Expression tool"

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Equipment Under Test

Analog to Digital

Alternating Current