160 PI-MAX/PI-MAX2 System Manual Version 5.F
Ext. Trig. In.: When external triggering is
selected in the software, the PTG will be triggered
by an externally derived trigger pulse applied to
this input. The threshold (range ±5 V), slope,
coupling mode (AC or DC), and input impedance
(High or 50 ) are selectable in software.
Trig. LED: Trigger indicator. A 100 ms flash is
produced each time the PTG triggers. With
repetition rates faster than 10 Hz, indicator glows
continuously.
Pre. Trig. In: TTL level used only to start a
bracket pulse.
Power Module: Contains the powercord socket
and two fuses. Depending on the ST-133 version,
the power switch may be located directly above
the power module.
T0 TTL Trigger output coincident with
PI-MAX2 gate. This output does not need to be
connected to the PI-MAX2.
Fuse/Voltage Label: Displays the controller’s
power and fuse requirements. This label may
appear below the power module.
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