4 no load offset compensation flow diagram, An366, Figure 43. meter test equipment – Cirrus Logic AN366 User Manual

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AN366

6.2.4 No Load Offset Compensation Flow Diagram
The following flow diagram shows the implemented of no load power offset compensation using the
CDB5484U and a PC as the controller. The MTE Meter Test Equipment source is used to provide the source
voltage and no load current. Each step of the flow shows the CDB5484 GUI screen capture of execution
and reading results. The register writes and reads are all identified for easy compares to the GUI screen.

APPLY FULL SCALE VOLTAGE AND ZERO LOAD CURRENT
(See Figure 43.)

Figure 43. Meter Test Equipment

FROM MAIN

FLOW

CLEAR DRDY

APPLY FULL

SCALE VOLTAGE

AND ZERO LOAD

CURRENT

DRDY

SET?

TSETTLE = 2000

Sample Count

N = 16000

Shown

Main

Flow

YES

START

CONTINUOUS

CONVERT

0xD5