Campbell CR10 PROM Instruction Manual download pdf (Page 30)

APPENDIX D. SDM COMMUNICATIONS AND LONG SIGNAL CABLES

D-2

parameters that were tested and their failure

rate as a percent of attempts.

The following report was created from the

above SPLIT parameter file, SDM.PAR.

TABLE D-2. SDM Clock Rate Report

SDM Clock Rate Report

SDM Failures Attempts

Param % Attmpt

1 100 1

4 100 1

7 100 1

9 100 17

10 96 450

11 0 449

12 0 449

13 0 432

From the above results, the fastest rate that the

SDM bus could run, without encountering

communication errors, would be using a value

of 11 for the SDM clock parameter in Instruction

Set SDM Clock (P115). However, to have a

safety margin, a value of 12 is used for the SDM

parameter. The test showed that using a value

of 12 or the SDM parameter in Instruction Set

SDM Clock did not cause the CR23X to overrun

the Tables each scan, thus the SDM clock rate

is left at parameter 12.

With the CR9000, collect the datatable “report”.

This datatable contains an SDM Clock Rate

Report similar in form to the one generated by

SPLIT (Table D-2).

Instruction Set SDM Clock (P115) with a value

of 12 for the SDM parameter is added to the

flux program and tested.

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Campbell CR10 PROM Instruction Manual Page 30