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Combining the ease of use and accuracy of WPI’s 300 Series stimulators with the power output of a stimulus isolator
Isostim™ Stimulator/Isolator
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 pushbutton 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 10 mA 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. The rechargeable A320R is supplied with a nickel metal hydride battery stack which provides 10-12 hours of operation before recharge is required. The A362 Battery Charger must be used with the A320R.
STIMULATORS, ISOLATORS
ISOSTIM™ SPECIFICATIONS
TIMING PARAMETERS Interval Pulse width INPUT External sync External gate External command voltage Trigger threshold OUTPUT Waveform Current ranges Output polarity Current rise time and delay Current fall time and delay Optocoupler POWER Dry Cell (Version D) Rechargeable (Version R) DIMENSIONS SHIPPING WEIGHT 16 alkaline 9V batteries included 16 rechargeable NiMH 9V batteries (included) 8.5 x 3.5 x 4.9 in (22 x 9 x 12 cm) 4 lb (1.8 kg) DC, pulse from internal timing or externally generated pulse 0-1 mA, 0-10 mA Reversible, manual switch 8 µs, typical (1 K Ω load) 10 µs, typical (1 K Ω load) 1012 Ohms 2500 V rated min. breakdown voltage Accepts 1 µs minimum pulses Accepts 1 µs pulse to continuous 5.0 V at 3.0 mA (TTL level), 10 V max. 2.0 V at 0.5 mA 5 ms to 5.5 s continuously variable in three ranges (0.18 to 200 Hz) 50 µs to 550 ms continuously variable in four ranges
A362 Battery Charger
Required for A320R, A365R and A395R
Recharges the high-voltage nickel-cadmium or NiMH battery stack in the A320R, A365R or A395R. LED lamp indicates charging status. Full charge overnight. Dimensions: 2.8 x 4.1 x 5 in. (7 x 10 x 13 cm). Shipping weight: 4 lb (1.8 kg). SYS-A362 A320RC SYS-A320D SYS-A320R Battery Charger for A320R, A365R, A395R A320R with Charger (A362) Isostim™ Stimulator/Isolator Isostim™ Stimulator/Isolator (rechargeable) Specify line voltage OPTIONAL ACCESSORIES DRL Dummy Load Resistor Kit (set of 3) 13347 BNC-to-Double Banana Adapter
Load voltage excursion (compliance) 100 V nom., 150 V max.
Leakage resistance, output to ground
90
UK: Tel: +44 (0)1462 424700 • wpiuk@wpi-europe.com
World Precision Instruments
www.wpiinc.com Germany: Tel: +49 (0)30-6188845 • wpide@wpi-europe.com US: Tel: 941-371-1003 • sales@wpiinc.com
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