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TTL Trigger Isolation Adapter

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TTL Trigger Isolation Adapter
Part #: INISO-TRIG

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 recorded using lower sampling rates. This isolation adapter connects a TTL level source to the HLT100C module in the Control room (do not place INISO-TRIG in Chamber room).

Input trigger

pulse profile: Negative going pulse
pulse width: 50-200 µsec
triggering: 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: ~ 5 µsec  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: HLT100C module (plugs directly into any of the 16 input channels)

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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-TRIG
Categories: Amplifiers - Research, MRI Magnetic Resonance Imaging - Research
Subcategories: Interface Modules - Research, Trigger - Research

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