Stimulus Isolation Unit (SIU-102)

Stimulus Isolation Unit (SIU-102)

Designed for use with Warner's imaging chambers and dish inserts with field stimulation electrodes.

  • Constant Current and Constant Voltage
  • Bipolar, Pulse and DC modes
  • Optical coupling isolates the stimulator from the pulse source
  • Current up to 100 mA
  • Voltage up to 100 V
  • For imaging applications only

Item# Description U.S. List Price Quantity
64-1424 SIU-102 Stimulus Isolation Unit
64-1425 CC-102 Cable, male banana to 1 mm jacks (for use with Warner field stimulation chambers)
64-1325 WC1-10 1 mm Pin, pkg. of 10
460-8090 Rack handle (2U)
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The SIU-102 is an ideal unit for providing cell stimulus in an imaging application. Unfortunately, the SIU-102 is not compatible with electrophysiological applications and we recommend using our DS2A and DS3 Isolated Stimulators for these environments.

This instrument features optical isolation at the input and transformer isolation at the output. Timing pulses can be controlled by any device capable of generating a TTL level positive pulse (for example, a computer with data acquisition). Positive or negative pulses, positive or negative DC, and bipolar pulses are possible, all in constant current or constant voltage delivery modes.

For bipolar delivery, a positive pulse during the input pulse is followed immediately by a negative pulse of equal duration and amplitude. Bipolar pulse widths from 100 µs to 100 per each polarity are possible. Output amplitude is set using a range mode switch in conjunction with a ten-turn potentiometer to set a percentage of the selected range.

General connection to the SIU-102 is via the panel-mounted banana jacks. A CC-102 cable is available for connection of the SIU-102 to stimulating electrodes having 1 mm pins on their ends.

C-102 Cable

Indicator lights keep the user apprised of the following:

High Voltage:

Lights red when output voltage above 30 volts.


Lights when impedance across output is too high for current setting.

T>100 Sec:

Lights when pulse width input is longer than 100 seconds in Bipolar mode.

Ext. Trigger:

Lights when a valid input is applied to the Pulse In BNC.






(CC-102 Cable)

Output Waveform DC Level, Current Pulse or Voltage Pulse
Output Current Ranges 1, 10, and 100 mA
Output Voltage Ranges 10 and 100 V
Output Impedance Voltage Mode 10 V Range: 1 kΩ 100 V Range: 10 kΩ
Output Compliance 100 V
Output Polarity Selected by Mode Switch Red connector is positive in any positive mode Red connector is negative in any negative mode
Amplitude Control Multi-turn dial
Input Pulse Requirements TTL level, positive pulse 3 volt, 1 mA minimum Minimum Pulse Width: 100 µs Maximum Pulse Width: 100 s (Bipolar Mode Only)
Input Connector BNC
Output Connector Banana Jacks
Power Requirements 90 to 270 VAC, 50/60 Hz, 10 VA
Physical Size,
H x W x D
8.9 x 20 x 25.4 cm
Shipping Weight 3 kg
Warranty Two years, parts and labor
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SIU-102 (2005.08.16).pdfSIU-102 User's Manual