# General Specifications Mk III

<table data-header-hidden><thead><tr><th width="535"></th><th></th></tr></thead><tbody><tr><td>Maximum Depth Exposure (minimum crush depth)</td><td>300 m (Transponder), 50m (Transceiver)</td></tr><tr><td>Volume, Transceiver Unit</td><td>480ml</td></tr><tr><td>Mass, Transceiver Unit </td><td>600g</td></tr><tr><td>Volume, Transponder Unit</td><td>300ml</td></tr><tr><td>Mass, Transponder Unit</td><td>410g</td></tr><tr><td>Absolute Maximum Range</td><td>300 m </td></tr><tr><td>Typical Usable Range</td><td>300 m </td></tr><tr><td>Apparent Yaw/Azimuth resolution</td><td>0.1° </td></tr><tr><td>Apparent Elevation angle resolution</td><td>0.1° </td></tr><tr><td>Slant range measurement resolution</td><td>0.1 m </td></tr><tr><td>IMU Euler angle accuracy, typical (magnetic errors not included)</td><td>2° </td></tr><tr><td>Update rate</td><td>1 Hz </td></tr><tr><td>Transceiver Ping Frequency</td><td>25 kHz </td></tr><tr><td>Transponder Ping Frequency</td><td>25 kHz</td></tr><tr><td>Transceiver V-in power (see note)</td><td><p>5 to 16V </p><p></p><p>2.5W average, 3.5W peak @5V DC</p><p></p><p>2.1W average, 3.3W peak @12V DC</p></td></tr><tr><td>Transponder V-in power <em>(see note)</em></td><td><p>4.5V to 28V</p><p></p><p>1.7W average 2.9W peak @5V DC</p><p></p><p>1.3W average, 4.1W peak @16V DC</p></td></tr><tr><td>Serial Comms Voltage Levels</td><td><p>3.3V TTL or</p><p>5V TTL, auto sense</p></td></tr></tbody></table>

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Note: Power supplies for both units must be able to supply burst currents to prevent drop-out and erratic operation. While the transmitter will work with a low impedance 5V supply we recommend using 9V or higher, unless you know how to figure out if your 5V power supply is low-enough impedance.&#x20;
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**Note: Resolution ≠ Accuracy**!
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