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NOW YOU CAN TEST:

• Piezoelectric transducers.
• Transformer coupled transducers.
• Magnetostrictive transducers.
• Hydrophones, speakers, and coils.

Extended Frequency Range

500 Hz to over 500 KHz. Covers survey and special purpose sonar and acoustic transducers.

Load Reactance Indicator

Dual color LED indicates if the load is resonant (resistive), inductive, or capacitive at any frequency.

Load Current Meter

Analog meter shows series or parallel resonance points. Identifies resonant frequency points.

Leakage Indicator

Dual color LED for leakage and continuity test.

Variable Zout Control

Determine transducer impedance at resonance.

How it Works
The TT-2 sends a signal through a variable resistor connected to the xducer jack. The voltage at the attached transducer is monitored and compared to the voltage generated internally in the TT-2. This voltage difference is converted to current and displayed on the relative xducer current meter. The phase difference is monitored and drives a load indicator. At a given frequency, if the load indicator is red, it means the transducer is capacitive. A green load indicator shows the transducer to be inductive. At resonance, the indicator will be dim or off as the transducer is mainly resistive with negligible reactance. The DC resistance of the load is monitored and drives the leakage indicator. This leakage indicator is green for resistances less than 3 megohms, and red for a resistance less than 10K ohms.

Using the TT-2
Connect a transducer to the xducer jack. Turn the power on and rotate the frequency knob until the meter peaks, indicating a resonant point. Most sonar transducers have three resonant points. The TT-2 is so sensitive that the pressure of a finger on the transducer face will deflect the meter at only one of the three resonant points. This is normally the operating frequency of the transducer. The impedance is found by rotating the z out control until the meter is in the Zo range. The impedance is indicated by the position of the z out knob.

Test cable and 9 volt battery included!

Please E-Mail edisales@bbginc.com or telephone (757) 366-9211 (within the USA) for more information on EDI's product design services.

Click here to email your questions or comments to EDI.

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Electronic Devices, Inc. 1708 South Park Court, Chesapeake, VA 23320. Phone (757) 366-9211

Cat TT-2 01/98