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Applications
• For use with Airmar's line of AT ultrasonic
transducers.
• To aid in designing ultrasonic systems.
• Allows the designer to quickly and easily transmit
and receive echoes.
Features
• Jumper selectable frequency and pulse width for
optimal interfacing.
• Transmit pulse is amplified to 400Vpp via a power
MOSFET and transformer.
• Received echoes can be viewed at X1, X10, X100,
and X1000 amplification.
P2, frequency
adjust
P1, pulse
width adjust
J1, jumper
J2, jumper
OPERATING INSTRUCTIONS
T1 Development Kit
IMPORTANT : Please read the instructions completely before proceeding.
J4
Figure 1. T1 development board
AIRMAR
®
Operation
1. Connect J4 to a 12V power supply capable of at
least 125mA.
2. Connect the transducer to J5.
3. Aim the transducer directly at a flat reflecting
surface.
4. Connect a scope to one of the four echo
amplification positions on J3.
5. Insert jumpers J1 and J2 at the position
corresponding to the AT model being evaluated.
This sets the initial values for frequency, pulse
width, and pulse rate.
6. Using P2, tune the operating frequency for the
maximum echo.
7. Using P1, adjust the pulse width to give the
desired echo width.
+12V
ground
J5
transducer (+)
transducer (-)
J3
echo X1
echo X10
echo X100
echo X1000
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Summary of Contents for Airmar T1
- Page 1 IMPORTANT : Please read the instructions completely before proceeding. Applications Operation 1. Connect J4 to a 12V power supply capable of at • For use with Airmar’s line of AT ultrasonic least 125mA. transducers. 2. Connect the transducer to J5.
- Page 2 C15 and/or C16 which will corresponding pulse width and frequency adjustability produce a new operating frequency, refer to Figure 2. using the T1 development board are shown on Table 1. (These values are approximate.) Alternatively, an external pulsed signal (such as one generated by a microprocessor) may be amplified and...
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