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Stim Switch User Manual
Rev. 2.00
® Page 2
LB-0357
2
Hardware
2.1 Stim Switch Control Module
The Stim Switch Control Module interfaces the Headstage Module with the digital control
computer and analog stimulation source. Stim Switch configuration is accomplished using the
StimComm program described in Section 3.
Power Switch (1): Use the power switch to turn on the Stim Switch Control Module. An LED just
above the power switch will illuminate the color blue to indicate that the unit has power.
Emergency Stop (2): The emergency stop jack is used to attach an emergency stop switch (not
included) if emergency stop capabilities are required for your application. When activated, the
emergency stop controller will set all of the headstage channels to blanking mode, clear the mode
registers, and notify the PC of the emergency condition. The Stim Switch Control Module is
designed for use with Normally Open (NO) Emergency Stop Switches.
USB CMD Port (3): Control of the Stim Switch is accomplished through commands sent via a
USB A-B cable connected between the USB Port on the Stim Switch and the USB Port of the PC.
A green LED above the port illuminates during activity on the port. If an error occurs, the LED will
flash red.
FS Out (4): The Fast Settle Out BNC connector is used to drive the fast settling input of a
NeuroPort Front End Amplifier. The fast settling input reduces the Front End Amplifier’s time to
measurement after switching events for action potentials, and enables switching times as fast as
5 ms. This is accomplished by adding an additional pole to the frequency response of the
amplifier. Without the fast settle feature, there is a delay of 3-5 seconds after switching back to
recording mode before signals can be recorded.
Whenever any of the Status Out lines are high, the FS Out connection is also high which is
indicated on the Stim Switch by the illumination of a green LED above the connector.
Enable In (5): Four 3.3 V Enable In (labeled 1, 2, 3, and 4) BNC connectors can be used to
enable/disable single or multiple banks of the stimulation connections simultaneously. The green
LED above each Enable In connector indicates the current status of the Enable In input. The
Enable In input is enabled when the connection is held high (3.3V). The Stim Switch is disabled
when the connection is connected to ground (0 V). The exact details are specified in the table
below. This connection is required for applications which require external control of switching.
Figure 2-2: Stim Switch Control Module Front Panel