A320R Isostim Stimulator/Isolator Rechargeable

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 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

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 is required with the A320R. See A320RC, which includes both the A362R and the A362 battery charger.

TIMING PARAMETERS: Interval	5 ms to 5.5 s continuously variable in three ranges (0.18 to 200 Hz)
TIMING PARAMETERS: Pulse	width 50μs to 550 ms continuously variable in four ranges
INPUT: External sync	Accepts 1 μs minimum pulses
INPUT: External gate	Accepts 1 μs pulse to continuous
INPUT: Ext. command voltage threshold	5V at 3mA min., 8.5V max.
OUTPUT: Waveform	DC, pulse from internal timing or externally generated pulse
OUTPUT: Current ranges	0-1 mA, 0-10 mA
OUTPUT: Load voltage excursion (compliance)	100 V nom., 150 V max.
OUTPUT: Output polarity	Reversible, manual switch
OUTPUT: Current rise time and delay	8μs, typical (1 KΩ load)
OUTPUT: Current fall time and delay	10μs, typical (1 KΩ load)
OUTPUT: Leakage resistance, output to ground	1012 Ohms
OUTPUT: Optocoupler	2500 V rated min. breakdown voltage
POWER: Dry Cell (Version D)	16 alkaline 9V batteries included
POWER: 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)

A320 Instruction Manual

B.M. Ances, E. Zarahn, J.H. Greenberg, J.A. Detre "Coupling of Neural Activation to Blood Flow in the Somatosensory Cortex of Rats IS Time-Intensity Separable, but not Linear" J of Cerebral Blook Flow and Metabolism 20. 2000: 921-930

To place an order for this product, please contact the appropriate WPI office or distributor.

Customers from North America can order direct from our corporate office:
World Precision Instruments
175 Sarasota Center Boulevard
Sarasota, FL 34240-9258

• Phone or Fax
  Toll-free: 866-606-1974 Tel: 941-371-1003 Fax: 941-377-5428
Our Customer Service Representatives are available 8am - 6pm EST.
• Online Store
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• Want instant pricing? Order a free catalog here

International customers, please see our office and distributor contact information list.

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2851 - BNC to BNC cable
500257 - BNC to BNC connector
500258 - BNC to BNC connector
500259 - BNC to BNC connector
500184 - BNC to BNC cable
5470 - Isolated Bioamplifier
DRL - Dummy Load Resistor kit

No application notes are available for this product at this time.