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OPERATING INSTRUCTIONS AND
SYSTEM DESCRIPTION FOR THE
ISO-STIM 01D
STIMULUS ISOLATION UNIT
100 V / 10 mA, bipolar output
VERSION 4.3
npi 2016
npi electronic GmbH, Bauhofring 16, D-71732 Tamm, Germany
Phone +49 (0)7141-9730230; Fax: +49 (0)7141-9730240
support@npielectronic.com; http://www.npielectronic.com
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Table of Contents
Summary of Contents for NPI ISO-STIM 01D
- Page 1 OPERATING INSTRUCTIONS AND SYSTEM DESCRIPTION FOR THE ISO-STIM 01D STIMULUS ISOLATION UNIT 100 V / 10 mA, bipolar output VERSION 4.3 npi 2016 npi electronic GmbH, Bauhofring 16, D-71732 Tamm, Germany Phone +49 (0)7141-9730230; Fax: +49 (0)7141-9730240 support@npielectronic.com; http://www.npielectronic.com...
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Page 2: Table Of Contents
_________________________________________________________________________________________________________________ Table of Contents Safety Regulations ......................3 Special Safety Notice for High Voltage Instruments ............4 ISO-STIM 01D Stimulus Isolation Unit ................5 3.1. System Description ...................... 5 3.2. Description of the Front Panel ..................6 ... -
Page 3: Safety Regulations
HANDLING: Please protect the device from moisture, heat, radiation and corrosive chemicals. POWER SUPPLY: Do not connect more than one ISO-STIM 01D to a single power supply. The power supplies are designed to work with one stimulator only. Use only the power supply shipped with the instrument. -
Page 4: Special Safety Notice For High Voltage Instruments
ISO-STIM 01D User Manual _________________________________________________________________________________________________________________ 2. Special Safety Notice for High Voltage Instruments HIGH VOLTAGE!! RISK OF ELECTROCUTION!! Observe extreme caution when working with this instrument!!! Always connect high voltage power supplies to protective earth!! Do not touch connections unless the instrument is turned off and the capacitance of both... -
Page 5: Iso-Stim 01D Stimulus Isolation Unit
The output signal is optically isolated from ground and can either be a constant voltage up to 100 V or a constant current up to 10 mA. The ISO-STIM 01D has a built-in timing unit with adjustable pulse length, amplitude and polarity. -
Page 6: Description Of The Front Panel
_________________________________________________________________________________________________________________ 3.2. Description of the Front Panel POWER LED LED indicating that the ISO-STIM 01D is powered on BIPOLAR ON/ BIPOLAR OFF switch Switch that selects the stimulus mode. Switching to BIPOLAR ON results in a stimulus with the same amplitude in positive and negative direction without any delay. Amplitude... - Page 7 ISO-STIM 01D User Manual _________________________________________________________________________________________________________________ (8, 10) OVER LEDs LED indicating that the amplifier is 10% below its negative limit (limit is ±100 V in VOLTAGE OUTPUT MODE). In CURRENT OUTPUT MODE the limit (±100 V) is set by the corresponding voltage at the electrode due to Ohm’s Law [V = I*R]), i.e. this control...
- Page 8 #18. The same procedure is repeated in TTL mode for current source OFFSET, if the ISO-STIM 01D is in CURRENT mode using the CURRENT OFFSET trim pot #17. If these baselines are set, the isolation amplifiers may still produce a signal in ANALOG or DIRECT mode even if no stimulus is applied.
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Page 9: Operation
4. Operation 4.1. Connections – Noise Reduction The ISO-STIM 01D comes with a power supply (13.8 V, DC) with two outputs which are connected to the stimulus isolation device by two cables with banana plugs. The corresponding jacks at the ISO-STIM 01D are located at the rear panel, or use the FILTERED/UNFILTERED switch. -
Page 10: Modes Of Operation
ISO-STIM 01D User Manual _________________________________________________________________________________________________________________ 4.3. Modes of Operation GATE TTL INPUT MODE: In this mode the output signal is generated by the built-in timing unit. It is triggered either manually via the MANUAL TRIGGER switch or via a TTL pulse at the GATE TTL BNC connector. -
Page 11: Operation In The 10 Ma (Max.) Range
4.4. ISO-CAB (optional accessory) npi provides an optional shielded cable for connection of stimulation electrodes. One end is equipped with three color coded 4 mm connectors. The red and black connector are connected to the ISOLATED OUTPUT connectors on the front panel of the ISO-STIM-01 D. - Page 12 ISO-STIM 01D User Manual _________________________________________________________________________________________________________________ Figure 3: Modes of operation (illustration only) ___________________________________________________________________________ version 4.3 page 12...
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Page 13: Test Procedures
ISO-STIM 01D User Manual _________________________________________________________________________________________________________________ 5. Test Procedures For the following test procedures a function generator is required. The frequency for testing should be around 100 Hz, waveform is triangle. The value of the test pulse amplitude is always described in detail for each of the following steps. In this test condition a load resistor of 100 k... -
Page 14: Technical Data
ISO-STIM 01D User Manual _________________________________________________________________________________________________________________ 6. Technical Data Input (operation) modes: DIRECT, ANALOG TRIGGER, TTL TRIGGER selectable with toggle switch Output modes: voltage source, current source selectable with toggle switch Source ranges: ±100 µA, ±1 mA, ±10 mA (current source), selectable with 3- position rotary switch ±100 V (voltage source)
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