Universal Isolated Stimulator Output (UISO)
This unit is required to produce ungrounded (isolated or floating) stimuli and prevent interference in any biopotentials (ECG, EMG, EEG etc.) which are recorded simultaneously.
The UISO can be hooked between any stimulator and the stimulation electorde. It can be connected to virtually any type of stimulator delivering a trigger pulseand timing with the same width as the stimulus duration. The input for the trigger impulse is a BNC socket on the back plane. It can also be connected to a TTL trigger output generated by a software on a computer as a power amplifier. A switch selects the output amplitude range (0 to 50, 0 to 100 Volt). Fine adjustment is provided by the fine control on a 10-turn potentiometer. Stimuli produced can be either monopolar (positive or negative), or alternated. Alternated stimulation avoids electrode polarization. High voltages are required for field stimulation in tissue baths.
- Generates isolated stimuli in the range of 0 to 100 Volt
- Can be connected to any stimulator delivering a trigger signal and timing; the timing unit has to provide the stimulus pattern, e.g., a TTL trigger signal with the timing and pulse width; the UISO's output exactly follows this timing
- Can be used in combination with a TTL trigger output generated by computer software as a booster output
Applications:
- Electrophysiology
- In case of simultaneous biopotential recording
- Electrical stimulation of tissue in tissue baths (e.g. papillary muscle, together with intracellular action potential measurements)
- Cell stimulation in baths with field electrodes
| Specifications | 73-0504 | 73-2696 |
|---|---|---|
| Dimension (H x W x D) English | 6.3 x 2.2 x 8.7 in | 6.3 x 2.2 x 8.7 in |
| Dimensions (H x W x D) Metric | 160 x 55 x 250 mm | 160 x 55 x 250 mm |
| Stimuli Output | Constant voltage, floating, isolated | Constant voltage, floating, isolated |
| Stimuli Output Current | 1.8 to 2 A for stimuli duration < 100 μsec, 0.5 A at 10 msec stimuli duration | 1.8 to 2 A for stimuli duration < 100 μsec, 0.5 A at 10 msec stimuli duration |
| Stimuli Output Voltage | Two ranges 0 to 50 V, 0 to 100 V | Two ranges 0 to 50 V, 0 to 100 V |
| Stimuli Polarity | Positive, Negative, Alternating | Positive, Negative, Alternating |
| Trigger Input Impedance | 10 kΩ | 10 kΩ |
| Trigger Input Width | 10 μs to 10 msec defines Stimulus duration; if Trigger Signal Width exceeds 10 msec, stimuli duration is limited on 10 msec | 10 μs to 10 msec defines Stimulus duration; if Trigger Signal Width exceeds 10 msec, stimuli duration is limited on 10 msec |
| Trigger Signal | 3 to 15 V, Trigger level 1.5 V, active low or active high (can be switched internally using jumper) | 3 to 15 V, Trigger level 1.5 V, active low or active high (can be switched internally using jumper) |
| Weight (English) | 2.0 lbs | 2.0 lbs |
| Weight (Metric) | 1.3 kg | 1.3 kg |