JSR Ultrasonics PureView Series, Руководство оператора, Страница: 22 / 23

PureView™ Pulser-Receiver Operator Manual
Page 22 Imaginant Inc.
Appendix A - PureView Specifications
PureView Power Source:
It is highly recommended that all models of PureView Pulser-Receivers be supplied with USB power from an
independently-powered USB hub or from a PC’s USB port that offers enhanced-power. A powered hub
capable of supplying at least 1A and preferably 2A of current to the PureView instrument is sufficient. This
level of current is required for supplying power to the PureView pulser, especially as the PureView instrument
powers up.
Pulser
Pulse Type Negative Spike Pulse
Pulse Initial Transition Model Dependent
Pulse Amplitude Model Dependent
Pulse Energy Model Dependent
Pulse Duration Model Dependent
Damping Values Model Dependent
Pulse Repetition Freq (PRF) Model Dependent
Pulser Trigger Source Internal or External, user selectable, rising-edge triggers Pulser
External Trigger Input Signal 1V to 5V positive-going pulse
Sync-Signal Output Pulse Rising edge transition <3ns, Width < 600ns, +4V minimum into a 50 Ω load
Delay, Trigger Edge to Pulser Fire 160 ns typical
Receiver
Gain -11.5 to 70 dB in 0.5 dB steps
Phase 0° (noninverting)
Bandwidth Model Dependent
High Pass Filter Model Dependent
Low Pass Filter Model Dependent
Receiver Spot Noise Typically < 1.3nV/Sq.Rt.Hz, input-referred
Input Modes Pulse-Echo or Through Transmission, user selectable
Isolation between Inputs 60dB typical
Receiver Input Impedance 50 Ω
Receiver Output Impedance 50 Ω (Receiver output should be terminated in 50 Ω)
Linear Output Signal Range +500 mV to -500 mV with 50 Ω Termination. Signals beyond this range
many exhibit some compression of signal peaks.
Receiver Protection (Blanking) Start: 70ns (typical) following Rising Edge of Trig / Sync signal.
Duration: PureView model dependent, ranging from 300ns minimum to
1.2us maximum.