Experimental Physics and
Industrial Control System

Dear all,

Is that the expected behaviour with a scaler record?

With camonitor we get:

SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150289
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 2.9883e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150372
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 2.9896e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150437
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 2.9909e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150489
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 2.99231e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150556
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 2.9936e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150631
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 2.9949e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150686
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 2.9962e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150741
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 2.9975e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150811
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 2.9988e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150883
SAXS1:SCALER01.CNT             2014-03-28 17:15:59.223015 Done
SAXS1:SCALER01.S1              2014-03-28 17:15:59.223015 3e+08
SAXS1:SCALER01.S2              2014-03-28 17:15:59.223015 150945

We have SAXS1:SCALER01.RATE = 60, .TP = 30 and .FREQ = 1e+07. Our
EPICS base is 3.14.11 and scaler record as in std-2-8.

a) the timestamp is frozen. Is that normal?

b) how to ensure I can read the updated counts immediately after .CNT
goes "Done"? Or perhaps one should wait a minimal time before reading
the final count?!

c) are .SS and .US relevant fields to a scaler device support developer?

Thanks!

James
LNLS, Brazil

Replies:

RE: Scaler expected behaviour Mooney, Tim M.

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