Trigger modes and appendant registers

Channel Trigger

 

 

Channel window trigger for long inner signals

The analog input is continuously sampled with the selected sample rate. The upper and the lower levels define a win- dow. Every time the signal enters the window from the out- side, the pulsewidth counter is startet. If the signal leaves the window before the pulsewidth counter has stopped, no trigger will be detected.

If the pulsewidth counter stops and the signal is still inside the window, the triggerevent will be detected.

Register

Value

Direction

set to

Value

SPC_TRIGGERMODE

40000

r/w

TM_CHANNEL

20040

SPC_TRIGGERMODE0

40200

r/w

TM_CHXWINENTER_LP

10041

 

 

 

 

 

SPC_HIGHLEVEL0

42000

r/w

Sets the window’s upper level relatively to the channel’s input range.

board dependant

 

 

 

 

 

SPC_LOWLEVEL0

42100

r/w

Sets the window’s lower level relatively to the channel’s input range.

board dependant

SPC_PULSEWIDTH

44000

r/w

Set to the desired pulsewidth in samples.

2 to 255

Channel window trigger for long outer signals

The analog input is continuously sampled with the selected sample rate. The upper and the lower levels define a win- dow. Every time the signal leaves the window from the in- side, the pulsewidth counter is startet. If the signal enters the window before the pulsewidth counter has stopped, no trig- ger will be detected.

If the pulsewidth counter stops and the signal is still outside the window, the triggerevent will be detected.

Register

Value

Direction

set to

Value

SPC_TRIGGERMODE

40000

r/w

TM_CHANNEL

20040

SPC_TRIGGERMODE0

40200

r/w

TM_CHXWINLEAVE_LP

10051

 

 

 

 

 

SPC_HIGHLEVEL0

42000

r/w

Sets the window’s upper level relatively to the channel’s input range.

board dependant

SPC_LOWLEVEL0

42100

r/w

Sets the window’s lower level relatively to the channel’s input range.

board dependant

SPC_PULSEWIDTH

44000

r/w

Set to the desired pulsewidth in samples.

2 to 255

(c) Spectrum GmbH

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Spectrum Brands MC.31XX manual Channel window trigger for long inner signals, Channel window trigger for long outer signals