TDT iS9 Aversive Stimulator Instruction Manual
- May 15, 2024
- TDT
Table of Contents
TDT iS9 Aversive Stimulator
2016-2024 Tucker-Davis Technologies, Inc. (TDT). All rights reserved.
Tucker-Davis Technologies
11930 Research Circle
Alachua, FL 32615 USA
Phone: +1.386.462.9622
Fax: +1.386.462.5365
Notices
The information contained in this document is provided “as is,” and is subject
to being changed, without notice. TDT shall not be liable for errors or
damages in connection with the furnishing, use, or performance of this
document or any information contained herein. The latest versions of TDT
documents are always online at https://www.tdt.com/docs/
iS9 Aversive Stimulator
The iS9 generates small electrical currents for standard behavioural conditioning experiments, such as the startle and Pavlovian fear response. Timing is precisely controlled for pairing the stim with other sensory cues or behavioural events. The iS9 is compatible with 3 party behavioural boxes (Med Associates, Lafayette, and Harvard Apparatus). Deliver current from 0 mA – 2.5 mA in 0.01 mA steps to each of 9 metal floor grids in rapid succession. Detect spout licks with built-in touch sensors (decoupled at stimulation to avoid false responses).
Detect null events when stimuli fail to reach the subject. Automatically time- stamp stimulus and behavioural event information for on- and offline analysis. For information on software control of the iS9 and all of its available features, see the Synapse Manual.
iS9 Touch Inputs
The iS9 has two banana jack touch sensor inputs. They use a 750 nA current and
trigger if the measured impedance between the input and ground is <=10 MOhm.
The touch inputs are disabled during stimulation to avoid false detections.
iS9 Outputs
The iS9 outputs a specified current at 50 Hz or 60 Hz on up to 9 channels sequentially. Specify the desired duration of the waveform on each channel (in periods of the sine wave) and the number of times to repeat the entire scan (or on/off continuous).
These settings are all controlled in Synapse software. See the Synapse Manual for the full list of options.
Manual Operation
By default, the “Manual” button on the face of the iS9 presents a 1 mA, 1-period waveform, cycling all 9 channels continuously while pressed. During an experiment, the iS9 uses the stimulus parameters defined within Synapse.
Maximum Current: 2.5 mA into 50 kOhm load
The Pass/Fail LEDs indicate whether a subject was detected during the
stimulation. The output currents are calibrated to a 50-ohm grid rod. The
output does not scale linearly, so using a lower load may cause false
positives on the ‘Pass’ LED because the voltage output is small.
References
Read User Manual Online (PDF format)
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