Trigger Modes - HP 8112A Operating, Programming And Servicing Manual

Trigger Modes

Normal
Trigger
Gate
External Width
External Burst
Control Modes
Period, Delay, Double
pulse and Width Control
High-level Control
2-4 Specifications
The external trigger signal referred to in this section is applied to the
EXT INPUT BNC connector on the instrument front panel. The
trigger level and sense are adjustable. An external trigger can be
simulated by pressing the (MAN ) key.
The (1 PULSE) key gives an additional pulse in Gate and External
Burst modes.
A continuous pulse train is generated .
Each active input edge triggers a single pulse (or double pulse if DBL
is selected)
Active input level enables pulse train, last pulse always complete.
Width and period of first pulse may deviate 103 from subsequent
pulses.
Pulse recovery, input edges toggle output .
Each active input edge triggers a burst of pulses [BUR] ( 1 to 1 999
pulses). Width and period of first pulse may deviate 103 from
subsequent pulses.
An external control signal applied to the CTRL INPUT BNC
connector can be used to modulate the output signal.
1 V to 10 V voltage at Cntrl Input varies the selected parameter over
one decade. Eight non-overlapping decades cover the range specified
under "Timing Parameters " . Display shows max value available in
selected range.
101. -8 V to +8 V input varies HIL over the same range irrespective of
Settling time (within 5% of final value)
200 µs