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Agilent E1538A Enhanced Frequency/Totalize/PWM SCP 15
Totalize Positive or
Negative Edge State
Changes
Use [SENSe:]FUNCtion:TOTalize (@<ch_list>) to configure channels to
totalize. Totalize means to simply count state transitions (either positive
going, or negative going). Figure 9 A shows totalizing transitions between
each algorithm execution. Figure 9 B shows totalizing all transitions starting
from the time the module last received an INITiate command.
Use [SENSe:]TOTalize:RESet:MODe INIT | TRIG,(@<ch_list>) to
configure the totalize channel to either reset its count once each trigger event,
or only when the module is INITiated. Use INP:POL INV to sense negative
edges. The count capacity is 16,777,215 (24-bits, unsigned)
To totalize state changes at channel 44 starting from INITiate time
*RST
SENS:TOT:RES:MOD INIT,(@144)
ch 44 totalize reset at INIT
SENS:FUNC:TOT (@144)
ch 44 is totalize input
ALG:DEF ’ALG1’,’writecvt(I144,44);’
alg sends count to CVT
INIT
. . .
SENS:DATA:CVT? (@44)
get totalize count from cvt
Figure 9. Input Totalize Count