Airmar T1 User Manual

OPERATING INSTRUCTIONS

T1 Development Kit

Set Up

WARNING: The power supply must be OFF before

making electrical connections.

WARNING: The power supply requires a 0.5 amp
fast-blow fuse or circuit breaker.

17-143 rev. 03 08/20/12

IMPORTANT: Please read the instructions completely
before proceeding.

Applications

• For use with Airmar’s Ultrasonic Transducers.

• To aid in designing ultrasonic systems.

• Allows the designer to quickly and easily transmit and
receive echoes.

Features

• Jumper selectable pulse width and frequency for optimal
interfacing.

• Transmit pulse is amplified to 200 - 500 Vpp via a power
MOSFET and transformer.

• Received echoes can be viewed at X1, X10, X100, or
X1000 amplification.

J1—Set the jumper at the position appropriate for the
model being tested (see Table 1 and Figure 1). This selects
the initial value for the pulse rate.

J2—Set the jumper at the position appropriate for the model
being tested. This selects the initial value for frequency.

J8—Set the jumper to the proper voltage range for the
model being tested.

J7—Set the jumper for the desired echo amplification:
X1, X10, X100, or X1000.

J5—Connect the transducer.

J6—Connect an oscilloscope.

J4—Connect a 15VDC power supply capable of delivering
at least 125mA.

Jumper Position & Adjustability

The available models with their corresponding pulse width,
frequency, and voltage range adjustability are shown on
Table 1.

NOTE: These values are approximate.

Model

AR-30

AR-41

AR-50
AT-50

AT-75

AT-120

AT-200

AT-225

AT-300

J1

Pulse Rate

C1 (3Hz) C9

C2 (5Hz) C10

C3 (6Hz) C11

C4 (10 Hz) C12

C5 (25Hz) C13

C6 (25Hz) C14

C7 (25Hz) C15

C8 (25Hz) C16

Frequency

Table 1: Jumper Position and Adjustability

J2

J8

Voltage

<100kHz

<100kHz

<100kHz

<100kHz

>100kHz

>100kHz

>100kHz

>100kHz

POT1

Pulse Width Range

120 - 2400µs 25 - 34kHz 204 - 450Vpp

80 - 1600µs 32 - 46kHz 204 - 516Vpp

60 - 1200µs 46 - 60kHz 172 - 452Vpp

50 - 1000µs 64 - 83kHz 196 - 508Vpp

40 - 800µs 115 - 149kHz 90 - 248Vpp

16 - 320µs 173 - 228kHz 90 - 260Vpp

16 - 320µs 202 - 265kHz 90 - 256Vpp

16 - 320µs 296 - 357kHz 90 - 252Vpp

POT2

Frequency Range

POT3

Voltage Range

J4

power supply

POT3

voltage

adjust

POT2

frequency

adjust

POT1

pulse width

adjust

J1

pulse rate

select

J2

frequency

select

J8
voltage range
select

J5
transducer

J7
amplification
select

J6
oscilloscope

Figure 1. T1 Development Kit

Copyright © 2012 Airmar Technology Cor p.

Operation

Aim the transducer directly at a flat reflecting surface.

Adjust the following variables within the range specified
(see Figure 1).

POT1—Adjust the pulse width for the desired echo width.

POT2—Adjust the frequency for the maximum echo.

POT3—Adjust the voltage for desired signal amplitude.

Example of oscilloscope screen

®

AIRMAR

TECHNOLOGY CORPORATION

2

35 Meadowbrook Drive, Milford, New Hampshire 03055-4613, USA

www.airmar.com

Copyright © 1998 - 2012 Airmar Technology Corp. All rights reserved.