AMETEK Lx Series II Programming Manual - Manual (Page 162)

Programming Manual Lx \ Ls Series II
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7.7.3 Monitoring Both Phases of a Status Transition
You can monitor a status signal for both its positive and negative transitions. For example, to
generate RQS when the AC source either enters the CLrms (rms current limit) condition or leaves
that condition, program the Questionable Status PTR/NTR filter as follows:
STATus:QUEStionable:PTR 4096;NTR 4096
STATus:QUEStionable:ENABle 4096;*SRE 8
The PTR filter will cause the QUES summary bit to set RQS when CLrms occurs. When the
controller subsequently reads the event register with STATus:QUEStionable:EVEN?, the register
is cleared. When CLrms subsequently goes false, the NTR filter causes the QUES summary bit to
again set RQS.
7.7.4 Programming the Trigger In and Trigger Out SMA connectors
The AC source has two SMA connectors labeled Trigger In1and Trigger Out2(see Figure 7-2).
Refer to specifications in the User's Manual for the electrical parameters.
Trigger In1 SMA
This chassis-referenced digital input can be selected as a source for transient or measurement
triggers. This allows an action to be synchronized to an external signal. The trigger is recognized
on a high-to-low transition of the input signal. The minimum pulse width of the signal is 1
microsecond. To select the Trigger In connector as the trigger source, use:
TRIGger:SEQuence1:SOURce EXTernal or
TRIGger:TRANsient:SOURce EXTernal
TRIGger:SEQuence3:SOURce EXTernal or
TRIGger:ACQuire:SOURce EXTernal
Trigger Out1 SMA
This chassis-referenced digital output can be programmed to supply a pulse output at the leading
or trailing edge of a step or pulse, or at the leading edge of any point in a list sequence. The
output signal is nominally a 10 microsecond low-true pulse. To enable the Trigger Out connector,
use:
OUTPut:TTLTrg:STATe ON
At *RST, the Trigger Out connector is off.
To select a trigger source for the Trigger Out connector, use:
OUTPut:TTLTrg:SOURce BOT | EOT | LIST
BOT - specifies that the pulse is output at the beginning of a transient. This is
the *RST setting.
EOT - specifies that the pulse is output at the end of a transient.
LIST - specifies that the pulse position is defined by the LIST:TTLTrg command.
You can also specify the Trigger Out connector as a trigger source for measurement trigger
sequences. Use:
TRIGger:SEQuence3:SOURce TTLT or
TRIGger:ACQuire:SOURce TTLT