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Electronic Stimulators
CRS-STThe stimulator family of Experimetria Ltd. Looks back to an almost 20 years history. During these years the basic design changed three times and continuous further development of the system’s technical parts make these instruments the most handy and useful tools for pharmacological, physiological and neurophysiological studies.
CRS-ST is a microprocessor controlled modular square impulse stimulator.
The stimulator is made up of three major units:
- the microprocessor controlling unit (MCU unit)
- the analog end-amplifier unit
- accumulator charger for accumulator isolated unit
The analogous end-amplifiers are available:
- with built-in opto-separator at the power of 100V/100 mA (type: PTS)
- with built-in isolator at the power of 100V/100 mA (type ISO)
- with built in accumulator isolation at the power of 50V/50 mA (type: AISO)
The number of end-amplifiers that may be connected to the MCU unit may range between one and eight modules of any type.
- intelligent error messages
- last programmed train is saved
- unique real current isolator end amplifier unit- absolutely ground free
- accumulator isolated end-amplifier unit, with built-in recharger
- stimulation is up to 100V or 100mA
- current and voltage generator is built together in the end-amplifiers
- analogue amplitude adjustment between stimulator ranges
- stand alone programming unit (MCU), which can drive max. eight end-amplifiers
- signal indicator LED, continuously showing processing train
- switches for easy polarity changes
- positive and negative squares in the same train
| Power supply | 220V/50 Hz (+10/-15%) |
| Main fuse | 630 mA/250 V |
| Synchronic output signals: | |
| Output signal level | 0 ±5V (TTL-levels) |
| Max. loadibility | 1 TTL input |
| Length of synchronic | 25 ms |
| Active edge of square wave | falling edge |
| Analogue end-amplifiers: | |
| Max. output | 10 W |
| Impulse rising/falling | 10 ms |
| Voltage output mode: | |
| Max. output voltage | ±1V, 10V, 100V |
| Max. loading current | ±100 mA |
| Protection | short circuit protected |
| Current output mode: | |
| Max. output current | ±10 mA on 10 kW loading ±100mA on 1 kW loading |
| Isolator unit: | |
| Max. output voltage | 10V, 100V |
| Output resistance | 500 Ω (10V) 5 kΩ (100V) |
| Parameter ranges: | |
| Pulse Period (PP) | 500 msec…100 sec |
| Delay (DE) | 0.1 msec …100 sec |
| Pulse Width (PW) | 10 msec … 100 sec |
| Train Delay (TD) | 10 msec …100 sec |
| Train Number (TN) | 1 … 999 |
| Accessories: | Output cable with banana plugs Extension cable with Canon (D-sub) connector Main cable |
Programming possibilities
Mode 1. Continuous series of impulses (continuous mode)
Mode 2. Continuous mode with delayed synchronous impulses
Mode 3. Train mode
Mode 4. Delayed train mode
PP Pulse period: time period between the impulses
DE Delay: delay of the stimulating signal synchronous signal
PW Pulse width: width of the stimulating impulse
TD Train delay: pause between trains
)
Mode 5. Single mode
Mode 6. Delayed single mode
Mode 7. Single train mode
Mode 8. Delayed single train mode
PP Pulse period: time period between the impulses
DE Delay: delay of the synchronous signal compared to the stimulating signal
PW Pulse width: width of the stimulating impulse
)
