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Stim Switch User Manual
Rev. 2.00
® Page 3
LB-0357
Each Enable In port is designed for use at 3.3 V, but they can also be used with inputs rated
between 2.5 V and 5.0 V. Refer to Section 2.5 below for further instructions regarding the use of
the Enable In inputs.
Table 2-1: Behavior of the Enable In Port
Voltage Behavior
3.3 V Normal Operation. All channels behave as set
by the StimComm software.
0 V All channels set to recording mode when the
StimComm software is set to either recording
or stimulation mode. When in blanking mode,
the Enable In switch has no effect.
Status Out (6): Four yellow LEDs above the Status Out BNC connectors (labeled 1, 2, 3, and 4)
indicate whether stimulation mode has been enabled for the corresponding bank of stimulator
connections. When a bank of stimulator connections is disabled, the LED above the associated
Status Out connector is turned off.
Individual Front End Amplifiers can be connected to any of the four Status Out BNC connectors
for independent control of fast settling. The Status Out BNC connectors can also be connected to
the digital input connections of the NeuroPort NSP in order to provide markers in the recording
file of stimulation times.
Headstage Cable Connectors (7): Each bank on the front panel of the Stim Switch contains a
connector for a 50 conductor Headstage Module Cable. These cables provide the interface
between the Stim Switch and the Headstage Housing (see section 2.2 below). The power switch
on the Stim Switch should always be turned off when connecting or disconnecting the Headstage
Module Cable.
The LED next to each connector indicates the connection status of the corresponding Headstage
Module. When the Headstage Module is connected appropriately, the LED will light up green.
During stimulation or blanking modes, the LED turns yellow. If an error occurs in the connection,
the LED will turn red.
Stimulator Connections (8): Stimulation inputs can be connected directly into the DB-37
connectors for each bank of stimulation channels. The ground of the stimulation inputs and the
Headstage Module are isolated from earth ground. The area of the Stim Switch which is isolated
is denoted by the dotted line on the front panel of the Stim Switch Control Module.
When a stimulation channel is turned on in the StimComm software, it is connected directly to the
corresponding electrode output channel on the Headstage unit. The layout of the DB-37
stimulator inputs is shown in the figure below.
CAUTION: The Stim Switch is ONLY cleared for stimulation with the Blackrock
Microsystems Stim100 neural stimulator.
Figure 2-3: DB-37 Stimulator Connection Layout