Benthowave Instrument Inc.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Pulse Wave for Underwater Acoustic Systems

BII-4020 Series Pulse Signal Generator

BII-4020 series is a pulse signal or pulse train generator whose voltage level is TTL/CMOS compatible and duty cycle is 50%. BII-4020s are used to drive switching mode power amplifiers or linear power amplifiers in switching mode. Besides, BII-4020 can also be used to drive transducers directly for low power application in Laboratory or pilot study in field.

Pulse Signal Generator

Suggested Application  
Active SONAR System
Seafloor Mapping, Echo Sounding
Underwater Communication
Artificial Acoustic Target, Phantom Echo Generation
SINE Reference Signal for Demodulator/Quadrature Sampling
Sub-Bottom Investigation/Assessment/Profiler
Sediment Profiling, Sediment Penetrating
Detection Buried Objects Search, Pipeline/Cable Survey
Navigation/Fishery Acoustics/Physical Oceanography
Marine Animal Acoustics, Acoustic Behavior Research
Ultrasonic Instrumentation, HIFU System
High Output Current: 24 mA
Frequency Range: 0.5kHz to 3MHz
Pulse Width/Period Selectable
Pulse Width: 10μs to 100ms
Pulse Period: 1.024ms to 8hrs
Low Power Consumption
High Accuracy and Stability
Factory-set Parameters
Bolts for Easy Mounting, PCB and Potted Unit
Customized Signals
Pulse Generator  BII-4021 BII-4022
Signal Type: Gated Pulse Signal Gated Pulse Signal
Gate Signal
Continuous Pulse Signal
Frequency Range: 500Hz to 3MHz, Specify parameters when ordering.
Frequency Accuracy: ±0.25% typical; ±0.5% Maximum, @25°C
Frequency Stability: ±0.005%/°C, ref@25°C
Aging/Long-Term Stability: ±150 ppm/√kHr, @25°C
Pulse Width: 10μs to 100ms, Specify parameters when ordering.
Pulse Repetition: ≥ 0.000035pps, Specify parameters when ordering.
Digital Output Level: TTL/CMOS Compatible
Maximum Output Current: 24 mA
Cable Drive Capability: 0.1m to 10m, frequency dependent.
Quiescent Supply Current: 2mA
Supply Voltage: +6 to +30 VDC
Suggested DC Supply: +9VDC Batteries, Marine Battery, Automobile Battery, Fixed DC Linear Power Supply, Not Included.
DO NOT use variable power supply whose maximum supply voltage is higher than the above rated voltage. DO NOT use switching mode DC power supply.
Wiring for Signal: 0.15m Wires.
Wiring for Power Supply:  0.15m Wires: Red Wire: +VDC Supply; Black Wire: COM  
Connector:  Wire leads
Mounting: Two Mounting Hole on PCB, ΦD=2.54mm
Coated PCB Size (mm): ΦDxH = 50.8x9.0mm
Operating Temperature: -40°C to +85°C
Storage Temperature: -50°C to +105°C
How to Order BII-4020:
Please specify signal frequency (kHz), pulse width (PW, ms: millisecond) and pulse repetition (PR, pps: pulses per second) when ordering. These parameters are factory-set and calibrated at 25°C, not adjustable/trimmable, but selectable with onboard switch's by operators.
BII-4020 -xxx -xxx -xxx -xxx -xxx
Pulse Signal Generator Signal Frequency
in kHz
in mS
in mS
in PPS
in PPS
Example: Description:
BII-4021-37.5-0.2-0.5-10-0.1: BII-4021, Gated Pulse Signal, f=37.5kHz; Pulse Width PW1= 0.2ms, PW2=0.5ms; PR1=10pps, PR2=0.1pps.
BII-4022-200-0.05-0.2-1-0.2: BII-4022, Gated Pulse Signal, Gate Signal, Continuous Pulse Signal, f=200kHz; Pulse Width PW1= 0.05ms, PW2=0.2ms; Pulse Repetition PR1=1pps, PR2=0.2pps.

BII-4021 Outputs

Gated Pulse Signal 

BII-4022 Outputs

Pulse Signal 

BII-4020 Series Wiring

Pulse/Bust Square WaveformPulse/Bust Square Waveform

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