Multichannel Systems STG4004+STG4008 Manual - Manual (Page 68)

Stimulus Generator 4000 Series Manual
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8. Check all stimulus protocols before download. Please make sure that you have selected
all necessary channels under Download Channel for each file separately.
9. Download the files onto the STG by clicking Download on the STG menu.
10. The stimulation as specified in the selected MC_Stimulus files will now be triggered
by the selected trigger inputs (Trigger In 14).
Triggered action when channel(s) still active
You can define what action should be taken when any of the channels assigned to the trigger are
still active. In addition, you can also define what action should be taken when any of the channels
not assigned to the trigger event are still active. Please click the expand button to show
the advanced options:
 Stop: A following trigger input stops the stimulation on the assigned channels if at least one
channel that has been assigned to this particular trigger is still active in the moment of the trigger
event. The trigger event starts stimulation only if no channel that has been assigned to this
trigger is active.
 Restart: The stimulus protocols on all channels assigned to this trigger are started at the trigger
event, regardless of the activity on these channels.
 Ignore: The trigger event is ignored when any channel assigned to this trigger is active. The
trigger event starts stimulation only if no channel that has been assigned to this trigger is active.
Example:
File A is assigned to trigger 1 and file B to trigger 2. Consider the following two situations:
 Trigger 1 is activated, but channel 3 in file A is still active. As channel 3 from file A is assigned to
trigger 1, the settings defined for "on channel assigned to same trigger" would be applicable.
 Trigger 1 is active, but channel 3 in file B is still active. As channel 3 from file B is assigned to
trigger 2, the settings defined for "on channel assigned to other trigger" would be
applicable.
10.5 Extended Multi File Mode
The Extended Multi File Mode is a very flexible mode for advanced users. It can be used with
stimulus generators of the 4000 series with a digital IN / OUT connector only, that means STG
4004 and STG 4008. It is possible to download up to nine different stimulus patterns in the
default setting of the Extended Multi File Mode. Selecting the option "Show all Patterns" the
program supports 256 different patterns of stimulation. You can download up to 256 stimulus
patterns in advance and select among them. You can use one of these stimulus patterns at a time
of your choice with a digital signal. Please read also chapter "Multi File Mode".
This high number of different stimulus patterns are selected via the digital IN / OUT connector.
Please see the pin layout of the 25-pin D-Sub connector in the appendix. Pin 1 to pin 8 of the
connector refer to digital input D0 to D7. Pin 9 to pin 16 refer to digital output D8 to D15, but
they are not connected. Pin 17 to pin 25 are grounded. If you do not use all eight digital inputs,
you have to connect them to ground manually, otherwise they count like 1 = high. It is
recommended to build a connector.
All channels are assigned to trigger 1. Please make sure that you do not use any other trigger
input.
Each time when trigger 1 is activated, the program applies that one of the stimulus pattern
which currently is selected by D0 to D7.