Multichannel Systems STG4004+STG4008 Manual - Manual (Page 16)

Stimulus Generator 4000 Series Manual
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STG
interface: You can start the stimulation by pressing the Start / Stop button on the front
panel of the STG. Press the button again to stop the stimulation. Starting the
STG by pressing the Start / Stop button is considered as activating all four
trigger inputs, that is, all channels are started and stopped, and all four Sync
Out outputs are active when the STG is started. Pressing the Start / Stop button
stops the stimulation if at least one channel is still active in the moment of the
trigger event (indicated by the lighting SWEEP LED). Pressing the button starts
stimulation only if no channel is active (dark SWEEP LED)
External
control: You can start the stimulation on a trigger from an external device, for example,
a switch. You can use up to eight trigger inputs that independently trigger the
analog output channels that you have assigned to them. The trigger works in
a similar way as when you press the Start / Stop button. You can choose the
action that will be taken when one of the channels that are assigned to the
respective trigger input is still active. Either the stimulus protocols on the
triggered channels are stopped or restarted; or the trigger event is ignored.
There is also a separate Sync Out output for each Trigger In trigger input.
You can assign the Sync Outs to the trigger inputs. The default settings define
that Sync Out 1 is active when Trigger In 1 is triggered, and so on. Please see
Trigger Settings for more details.
STG status control
Three status control LEDs (light-emitting diode) are present on the front panel
of the STG to give you a quick overview on its status.
POWER STG has been switched on.
PROG Stimulus file was downloaded to STG. STG is now ready for operation.
SWEEP Stimulation is running, that is, at least one output channel is active.
MC_Stimulus II status control
The top part of the MC_Stimulus II status control refers to the active instance of the MC_Stimulus
II program instance and the STG that is controlled by this instance. All information in this part
is saved on the STG. The information is updated in the MC_Stimulus II main window when the
connection to the STG is changed or interrupted.
Status light Color Meaning
Connected Green STG is connected and switched on. The serial number serves as an ID
for the controlled STG and is displayed on the left. On the STG menu,
click Select Device to select another STG connected to a different
USB port from the drop-down list to switch STGs.
Green Stimulus file in voltage mode has been downloaded to STG.
STG is now ready for operation. File name and path of the *.stm file
that was downloaded onto the STG are displayed on the right. Programmed
Orange Stimulus file in current mode has been downloaded to STG.
STG is now ready for operation. File name and path of the *.stm file
that was downloaded onto the STG are displayed on the right.
Sweep Red Indicates the active trigger (up to eight). Each stimulation channel can
be assigned to any trigger. If all eight channels are assigned to trigger
one for example, only one sweep indicator will light up, even though
all stimulation channels can be active. See also Triggering Stimulation.