Specifications

TEL: [phone]
EMAIL: [e-mail]
DSTA-4A
DSTA-4A
Net: € CALL
For More Information:
http://www.dsts.com/dst-4a.htm
T3D
T3D
Net: € CALL
Quick, denitive tests for:
• Transducer resonant activity
• Transducer DC leakage
• Speed pickup Hall effect device
• Temperature transducer thermistor
TT2D
TT-2D
Net: € CALL
Now you can test:
• Piezoelectric transducers
• Transformer coupled transducers
• Magnetostrictive transducers
• Check Transducers for Proper Operation—Determine if a transducer is good or bad
within seconds
• Extended Frequency Range—500 Hz to over 600 kHz. Covers survey and special
purpose sonar and acoustic transducers
• Read Transducer Impedance—Direct display of computed transducer impedance
• Accurate Frequency Readout—Displays resonant frequency within 10 Hz
• Load Reactance Indicator—Display indicates reactive component of the transducer as
frequency is varied
• Leakage Indicator—Detect leakage in the transducer and associated wiring
How It Works:
As the frequency is varied, the voltage at the attached transducer is monitored and
compared to the voltage generated internally in the TT-2D. Each cycle of the waveform
is sampled at three different points. The resulting voltages are converted to digital form
and sent to the microprocessor. If the transducer is good these voltages will vary in a
unique manner about the resonant point. Based on this information the microprocessor
will compute and display the transducer’s impedance and reactance. Additionally, the DC
resistance of the transducer and associated wiring are checked for continuity and leakage.
• Wide-Frequency Range—30 kHz to over 520 kHz. Covers most all piezoelectric marine
transducers.
• Push-Button Calibration for Top-Notch Accuracy—The T3D can be calibrated at the
push of a button without other test equipment.
• Temperature Sensor Test—Temperature of thermistor is read directly in degrees
Centigrade or Fahrenheit. No more guessing if the readout or transducer is bad.
• Speed Pickup Test—Indicator ashes when the speed paddle wheel is rotated for a
positive check of the speed sensor.
• Leakage Indicators—Leakage is displayed over the range of 10 ohms to 10 megohms.
• Resonance Indicator Light Bar—Resonant points are indicated on a super-bright 10
LED bargraph.
How It Works:
The heart of the T3D is an accurate linear sweep generator combined with a sensitive
phase detector. The swept frequency is applied to the transducer and the phase change is
read and stored at approximately 700 points. After correcting all the readings for cable and
transducer capacitance the signicant changes are displayed on the LED bar graph display.
Each LED corresponds to a distinct frequency band and is illuminated at a brightness
proportional to the corrected phase change. Because of the combination of brightness and
frequency information, the display presents a unique signature for the transducer. Should
you test a faulty or improperly wired transducer no LEDs will illuminate.
Parts & Accessories
Transducer Testers
EDI
®
89
The DSTS-4A Depth Sounder Test Set uses digital signal processing, lling all the requirements
to test and calibrate today’s sophisticated depth sounders.
Features:
• External Load Jacks—For specialized load requirements
• Calibration Selections—For feet, fathoms, and meters
• Wide-Frequency Range—Covers 2.9 to 99.9 kHz
• Input Pulses—Up to 2,500 Vp-p for the higher power sounders
• Fish Echo—Mode simulates different size sh at any depth
• Automatic—Frequency and pulse width tracking
• Scope Trigger Output—Leads the reply pulse by 10 µs
• RS-232 Option—For complete control of all functions
• Battery Pack Option—Rechargeable internal battery for eld use