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Arm Process Variables
The following table lists the PVs for the arm settings used to configure the arm-qualified
trigger for the waveform acquisition synchronization. When using the input channels or
external input as the arm source, the arm threshold level is set using the corresponding
trigger PV.
Process Variable Type
Values
Description
ArmState
bi
0 or 1
The instrument arm state.
setArmSource
getArmSource
mbbo
mbbi
Discrete Arm
source:
“IMM” = immediate (bypass arm)
“TTLT0” = TTLTRG0 (external header)
“TTLT1” = TTLTRG1 (external header)
“TTLT2” = TTLTRG2 (external header)
“TTLT3” = TTLTRG3 (external header)
“TTLT4” = TTLTRG4 (external header)
“TTLT5” = TTLTRG5 (external header)
“TTLT6” = TTLTRG6 (external header)
“TTLT7” = TTLTRG7 (external header)
“INP1” = input channel 1
“INP2” = input channel 2
“INP3” = input channel 3 (ZT4xx2)
“INP4” = input channel 4 (ZT4xx2)
“EXT” = external input
“MAN” = software only
“PATT” = pattern
setArmPolarity
getArmPolarity
mbbo
mbbi
Discrete
Trigger slope or polarity:
“NEG” = negative
“POS” = positive