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OPGUD

Product catalog summary

Overview: The OPGUD HV is an ultrasonic pulser designed for compatibility with ultrasonic transducers having an impedance range of 500pF to 20nF. It is suitable for various applications requiring precise ultrasonic pulse generation.

Specifications:

Pulse Amplitude: 100V - 1250V
Duty Factor: 50% - 95%
Frequency Range: 0.7 – 164Hz
Trigger Output/Input: TTL

Operation Method: The device operates by initiating a transducer charging process upon the rising edge of a trigger signal. After a set time, the transducer discharges, generating an ultrasonic pulse and a trigger output.

Working Modes:

Setting (SET) Mode: Allows parameter adjustments via front panel potentiometers. This mode is not necessarily stable.
Normal Work (RUN) Mode: Blocks parameter changes, ensuring a stable generated signal.

Trigger Options:

Internal Trigger (INT): Uses an internal signal.
External Trigger (EXT): Reacts to an external rising pulse via a BNC connector on the rear panel.

Front Panel Controls:

SET/RUN Mode Switch
INT/EXT Trigger Switch
AMPLITUDE: Pulse amplitude setting
DUTY: Duty cycle regulation
FREQUENCY: Cycle length regulation

Rear Panel Features:

BNC Connector for Trigger (internal/output or external/input)
OUTPUT and POWER Switch
Jack Connector for 12V/3A power supply

Settings and Conditions: The frequency 1/fp must be larger than the repetition rate fT to ensure proper operation.

Examples of Measured Signals:

Amplitude = 1.160kV; Frequency = 164.2Hz
Amplitude = 1.240kV; Frequency = 24.24Hz
Amplitude = 440V; Frequency = 24.36Hz

Trigger output is a TTL Signal at 5V with a duration of 1.2us, supporting both 95% and 50% duty cycles.

Catalog excerpts

OPGUD HV is an ultrasonic pulser suitable for work with all ultrasonic transducers with about 500pF - 20nF impedance. The rising edge of the Trigger signal (see picture) initiates the transducer charging process. After a predetermined time, the end of charge of the transmitter occurs and the ultrasonic pulse trigger (falling edge pulse output) is generated. At the same time a pulse Trig output is generated. • Pulse amplitude: 100V - 1250V • Duty factor: 50% - 95% • Frequency: 0.7 - 164Hz • Trigger output/input: TTL Trig. input Pulse output Trig. output

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Working modes Generator can work in two modes: • Setting (SET) mode which allow to set parameters using potentiometers, available on the front panel. The generator is also normally working in this mode, but not necessarily stable. • Normal work mode (RUN). In this mode the possibility of changing the settings is blocked. The generated signal is stable in this mode. Trigger: • INT – Internal trigger • EXT – External trigger. In both cases trigger signal is sent or received by BNC (TRIG) connector on the rear panel. Trigger pulse is sent out after the transducer is discharged. In the case of external...

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Rear Panel BNC Connector TRIG – Trigger (internal / output or external / input) OUTPUT + _ POWER switch Jack Connector 12V/3A for wall socket. Back Settings Frequency:

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