Stimulus Isolator
SKU
1caa2b83
The FE180 Stimulus Isolator is suitable for both transcutaneous human nerve stimulation and stimulation of isolated nerves when obtaining evoked response measurements. This unit uses the analog output from a PowerLab to produce isolated constant current pulses. The FE180 Stimulus Isolator provides adjustable pulse amplitude, width and frequency. It is electronically isolated for subject safety and approved to the IEC60601-1 BF standard for human connection as a body protected (BF rated) instrument.
The FE180 Stimulus Isolator is suitable for both transcutaneous human nerve stimulation and stimulation of isolated nerves when obtaining evoked response measurements. This unit uses the analog output from a PowerLab to produce isolated constant current pulses. The FE180 Stimulus Isolator provides adjustable pulse amplitude, width and frequency. It is electronically isolated for subject safety and approved to the IEC60601-1 BF standard for human connection as a body protected (BF rated) instrument.
Compatibility:
The Stimulus Isolator is compatible with series 35 PowerLab.
For use with MLADDF30 Stimulating Bar Electrode.
Operation:
The output stage consists of a high-voltage constant-current source that can produce pulses of variable duration and amplitude under software control. The current source can deliver pulses up to 10 mA at 100 V compliance levels; its amplitude is set by a digital attenuator network, which is in turn controlled by the I²C logic. The output to the subject is through high-isolation optical couplers. Power for the stimulator current source is derived from the safety approved power pack External AC wall Transformer (plug pack) coupled through a custom isolation transformer (from which the isolated low voltage and 100 V supplies are derived).
The power pack complies with medical safety requirements. Under no circumstance should any other transformer be used with the FE180 Stimulus Isolator. During operation an indicator light on the front panel lights green with every pulse (it will glow yellow if the Stimulus Isolator is out of compliance). A small internal beeper can also be enabled to give an audible beep with every pulse delivered.
The FE180 Stimulus Isolator is supplied completed with the following:
• Shrouded Plugs (One RED, One BLACK) (2)
• I²C Cable (9-Pin Plug to 9-Pin Receptacle)
• BNC to BNC Cable
• Stimulus Isolator Owner's Guide
• Power Plug Pack (12 V AC, 20 V AC)
| Specifications | 77-0252 | 77-0058 |
|---|---|---|
| AC Line Leakage Current | <200 nA p?p | *na |
| Certifications | CE | *na |
| Compliance Voltage | 100 V fixed | *na |
| Control Port | I²C Port Provides control and power. Interface communications rate of ~50 Kbits/s | *na |
| Current Fall Time | <1 µsec (1 kΩ load at 10 mA) 25 µsec (100 kΩ load at 0.5 mA) | *na |
| Current Ranges | 100 µA, 1 mA, or 10 mA Full Scale | *na |
| Current Rise Time | <1 µsec (1 kΩ load at 10 mA) 25 µsec (100 kΩ loadat 0.5 mA) | *na |
| Differential Output Noise | <1 µA p?p | *na |
| Dimensions H x W x D English | 2.2 x 4.7 x 10.2 in | *na |
| Dimensions H x W x D Metric | 55 x 100 x 260 mm | *na |
| Input Isolation Rating | 4000 V ACrms for 1 minute | *na |
| Model | FE180 | MLADDF30 |
| Operating Conditions | 5 to 35 °C, 0 to 90 % humidity (non-condensing) | *na |
| Operating Duty Cycle | Up to 20% | *na |
| Output Configuration | Constant-current stimulator with hardware limited repetition rate, with following discharge clamp | *na |
| Output Connection Type | 2 x 4 mm (0.16 in) shrouded banana plugs | *na |
| Output Waveform | Rectangular, monophasic pulses with software-set pulse amplitude and duration | *na |
| Package | 1 | 1 |
| Power Source | Non-isolated circuitry supplied by PowerLab via I²C connection; isolated and high-voltage circuitry derives power from the external 12-volt AC, 300 mArms, wall-plug transformer; high voltage isolation is provided by an internal isolation transformer | *na |
| Product Family | Data Acquisition | Data Acquisition |
| Pulse Control Current Rise Delay | 12 to 22 µs (variable) | *na |
| Pulse Control Duration Accuracy | ±0.01% | *na |
| Pulse Control Pulse Duration Range | 0.01 ms (10 µs) to 2.56 ms in 0.01 ms (10 µs) Steps | *na |
| Pulse Control Repetition Accuracy | ±0.1% (determined by PowerLab) | *na |
| Pulse Control Repetition Rate | 2 pulses per minute (0.0333 Hz), up to 200 Hz with chart for MacOS, 1 pulse per minute (0.017 Hz), up to 200 Hz with chart for Windows | *na |
| Resolution | 1% of Full Scale (1 mA, 10 mA, or 100 mA) | *na |
| Safety Equipment | Isolating On-Off switch flicks down to disconnect quickly | *na |
| Safety Other | A single multi-color indicator displays the isolated stimulator status. A Green Flash indicates delivery of a valid stimulus. A Yellow Flash indicates an out-of compliance condition | *na |
| Safety | Approved to IEC60601-1 BF (body protection) standard | *na |
| Weight English | 2 lb 15 oz | *na |
| Weight Metric | 1.3 kg | *na |