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I am really impressed by your very high level of customer service. I got a problem of our pump recently and contacted the service. Julian Williams replied me immediately and tried to resolve the issue with good suggestions. Meanwhile, she loaned me a pump which enabled me to carry out my experime...
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SYS-A320D

SYS-A320D

Isostim Stimulator/Isolator

  • Overview
  • Specifications
  • Accessories
  • Citations
  • Related Products

Overview

A320 Stimulator

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  • Easy-to-use
  • Dual tone audible alarm
  • Designed for Neuroscience & Muscle applications

Timing

Pulse interval and width are set with single-turn continuously variable controls from 5 ms to 5.5 s in three ranges. Pulse width is continuously variable from 50 µs to 550 ms in four ranges.

Modes of Operation

In FREE RUN, Isostim™ generates continuous square waves. In EXT GATE or EXT SYNC modes, externally applied pulses can generate trains or single events. Single pulses of finite duration can be produced using a push-button on the instrument’s front panel. EXT/DC mode converts Isostim to a passive stimulus isolator.

Dual Tone Audible Alarm

A tone sounds when an open circuit is detected or when system compliance is reached. A second tone, which sounds when a signal is applied to the input, can only be heard if the batteries have sufficient charge to operate the isolator. A violation light advises when pulse width exceeds the interval.

Current Delivery

Stimulus currents up to 10mA can be set on the front panel with a control knob and a two-position range switch. Output current is load-independent.

Power

Isostim model A320D is powered by readily obtainable 9-volt alkaline batteries (included). Under average use these will last several months before replacement is required.

Specifications

TIMING PARAMETERS

 
Interval 5ms to 5.5s continuously variable in three ranges (0.18 to 200Hz)
Pulse width 50μs to 550ms continuously variable in four ranges
   

INPUT

 

External sync

Accepts 1μs minimum pulses
External gate Accepts 1μs pulse to continuous
Ext. command voltage threshold 5V at 3mA min., 8.5V max.

OUTPUT

 

Waveform

DC, pulse from internal timing or externally generated pulse
Current ranges 0-1mA, 0-10mA
Load voltage excursion (compliance) 10 V nom., 150V max.
Output polarity Reversible, manual switch
Current rise time and delay 8μs, typical (1KΩ load)
Current fall time and delay 10μs, typical (1KΩ load)
Leakage resistance, output to ground 1012Ω
Optocoupler 2500V rated min. breakdown voltage
   

POWER

 

Dry Cell (Version D)

16 alkaline 9V batteries included
Rechargeable (Version R) 16 rechargeable NiMH 9V batteries incl
DIMENSIONS 8.5 x 3.5 x 4.9 in. (22 x 9 x 12 cm)
SHIPPING WEIGHT 4 lb. (1.8 kg)

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Citations

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Our Clients Include:

GlaxoSmithKline
University College London
Novartis
Imperial College
University of Cambridge
University of Oxford

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