Filter
Top Products
• The active edge for generation of an arm event (ARM:STARt:SLOPe<n >) on the
selected arm source (n = 1 or n = 2).
• The measurement signal level to attain before allowing a measurement to begin
(ARM:STARt:LEVel<n>). This is used with ARM:SOURce INTernal<n>. It is
also possible to create a window bounded by two levels (ARM:LEVel:POSitive
and ARM:LEVel:NEGative) such that arming occurs when the signal level either
exits or enters the defined window.
• The additional delay between the arm event and entry into the wait-for-trigger
state (ARM:DELay).
Subsystem
Syntax
ARM
[:STARt |:SEQuence[1]]
:COUNt <
count
>
:DELay <
period
>
[:IMMediate] [no query]
:LEVel<
chan
>
:NEGative <
voltage
>
:POSitive <
voltage
>
:SLOPe[<
n
>] <
edge
>
:SOURce[<
n
>] <
source
>
[:STARt]:COUNt
ARM[:STARt]:COUNt <count> specifies how many measurement cycles will
occur after an INITiate, before the trigger system returns to the idle state. Each
post-arm measurement cycle begins when the event specified by the active arm
source(s) occurs. Multiple readings may be taken during each cycle, as defined by
the TRIGger:STARt:COUNt or SENSe:SWEep:POINts commands.
ARM:STARt:COUNt values greater than 1 in conjunction with pre-arm readings is
a special case which causes memory to be partitioned. Partitioning is done because
a large number of pre-arm readings may be taken before the arming event, while a
smaller number of pre-arm readings will actually be kept for read back. Therefore,
for each ARM:STARt:COUNt specified, a separate circular buffer (partition) is set
up to hold the specified number of "desired total readings"
(TRIGger:STARt:COUNt). With this scheme, pre-arm data may overwrite itself
until the arming event occurs, at which time, the post-arm data count will be
completed by overwriting the oldest pre-arm data. Due to this complexity, the
ARM:COUNt for this type of measurement is restricted to a much lower value than
what can be specified if all data is post-arm only.
ARM[:STARt]:COUNt
ARM Subsystem Command Reference 187