PureView™ Pulser-Receiver Operator Manual
Page 20
Imaginant Inc.
Pulser Voltage Supply Enable
This checkbox in the software enables or disables the power supply voltage that is supplied to the
Pulser circuitry. Disabling (unchecking) this control will allow all Pulser-Receiver functions to run but
the Pulser will not generate transducer excitation pulses. This control can be useful for debugging
PureView-based test systems.
Pulser Voltage
This displays the pulser power supply voltage. For PureView, this is typically a fixed value that cannot
be adjusted.
Pulser Energy
This control selects the pulser’s energy level. This control will be disabled (greyed out) for PureView
units that have a fixed pulse energy value.
Damping
This control allows the user to select between transducer-damping values. This control will be disabled
(greyed out) for PureView units that have a fixed (single) damping value.
Trigger Zin
This control is used when a PureView unit is set to External Trigger mode and the external trigger
signal is sent to the PureView unit using a 50 Ω coaxial cable. The ‘Trigger Zin’ control allows a user
to set the input impedance of the Trig / Sync connector to either 50 Ω or High Z (~18kΩ). Selecting a
value of 50 Ω connects an internal 50 Ω terminating impedance to the Trig / Sync connector which is
appropriate for terminating a 50 Ω coaxial cable.
You may set the Trigger Zin control to ‘High Z’ to provide a high impedance (~18kΩ) to the Trig / Sync
connector. This would be appropriate for trigger signals originating from a high-impedance source.
Multiple PureView instruments set to External Trigger mode can be triggered from the same external
trigger signal. To do so, their Trig / Sync connectors should be daisy-chained together so that the
trigger signal goes to a first PureView unit, then to a second, then to a third, etc. The ‘Trigger Zin’
value of each of these PureView units (except the last PureView unit) must be set to ‘High Z’. For
proper termination of the coaxial signal, the last PureView in the daisy chain should have its trigger
input impedance set to 50 Ω.
Instrument Status Indicators in JSR .Net Control Panel
Pulsing
The pulsing status LED indicator in the JSR .Net Control Panel software will illuminate red when the pulser is
actively pulsing, and will be grey otherwise.
Power Limit Status
The Power Limit Status light will be green when the PureView pulser voltage is nominal. At high pulser firing
rates (PRF rates) that may cause the pulser voltage to droop, the Power Limit Status light will turn red.