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TTL Trigger Isolation Adapter

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TTL Trigger Isolation Adapter
Part #: INISO-TRIGA

The TTL Trigger Isolation Adapter is ideal for recording trigger signals produced by MRI scanners (triggers on rising edge). Short duration TTL pulses have their pulse width elongated by the adapter, and this pulse width elongation allows short trigger pulses to be resolved with lower sampling rates. The INISO-TRIGA maintains safe subject isolation from any power surges from external equipment.

This TTL input signal isolator may be used to safely connect TTL pulse signals from externally powered mains equipment to the inputs of an AMI100D or HLT100C module interface or of an IPS100D isolated power supply to mains powered external equipment. This isolation adapter connects a TTL level source to the AMI100D, HLT100C, or IPS100D module in the Control room—do not place INISO-TRIGA in Chamber room.

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Elongate TTL pulse width

Record short trigger pulses with lower sampling rates

Record trigger signals produced by MRI scanners

TTL Isolation Adapter for MRI scanners
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Part #: INISO-TRIGA
Categories: Amplifiers - Research, MRI Magnetic Resonance Imaging - Research
Subcategories: Interface Modules - Research, Trigger - Research

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Compatibility

TTL Trigger Isolation Adapter

Input trigger

pulse profile: any TTL-type pulse
pulse width: 500 ns minimum (no maximum)
triggering: Positive (rising ) edge of input pulse

Output pulse

profile: Positive pulse
pulse width: 2.2 msec (nominal)
pulse voltage range: 0-5 V (TTL)

Propagation delay: ~ 100 ns  from rising edge of input trigger to rising edge of output signal

Input Voltage: High 4-10 V; Low 0-1 V

Input Current: High 5-15 ma; Low 0-0.25 ma

Isolation: 1500 VDC

Connectors: BNC female (Input) and Phone plug (Output)

Cable: 2 m; phone plug connectors

Interface: Plugs directly into any of the 16 input channels on an AMI100D or HLT100C module interface or IPS100D isolated power supply

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