General Specifications

Maximum Depth Exposure (minimum crush depth)	300 m (Transmitter, Transponder), 50m (Receiver, Transceiver)
Volume, Transceiver (Mk III)	480ml
Volume, Receiver (Mk II), Transmitter (Mk II), Transponder (Mk III)	400 ml
Volume, Transmitter (Mk V)	250 ml
Mass, Transceiver (Mk III)	600g
Mass, Receiver (Mk II)	335g
Mass, Transponder (MK III), Transmitter (Mk II)	300g
Mass, Transmitter (MK V)	440g
Weight in water, Transmitter (MK V)	170g
Absolute Maximum Range (Mk II)	500 m
Typical Maximum Usable Range (Mk II, MK III)	300 m
Apparent Yaw/Azimuth resolution	0.1°
Apparent Elevation angle resolution	0.1°
Slant range measurement resolution	0.1 m
IMU Euler angle accuracy, typical (magnetic errors not included)	2°
Slant range error accumulation, Mk II	1 m/hr
Update rate (Mk II, Mk III)	1 Hz
Update rate (Mk V)	1 - 5 Hz, range dependent
Transceiver Ping Frequency	25 kHz
Transponder Ping Frequency	25 kHz
Transmitter or Transponder Acoustic Power Level, typical	185dB re: 1uPa at 1 meter distance
Mk III Transceiver V-in power (see note 1)	5 to 28V 2.5W average, 3.5W peak @5V DC 2.1W average, 3.3W peak @12V DC
Mk II Receiver-in power (see note 1)	5V to 28V DC ~1.5 Watt
Mk III Transponder V-in power (see note 1)	5V to 28V 1.7W average 2.9W peak @5V DC 1.3W average, 4.1W peak @16V DC
Mk II Transmitter V-in power (see note 1)	5V to 28V DC 1.4W @ 5V 1.6W @ 28V
Mk V Transmitter V-in power (see note 2)	10V to 28V DC 3W @ 16V (average)
Serial Comms Voltage Levels	3.3V TTL or 5V TTL, auto sense
Ethernet	10/100 mbs

Note 1: Voltage is specified at the terminals of the printed circuit board of the device, user must ensure there is sufficient voltage after the cable voltage drop. Power supplies for all units must be able to supply burst currents to prevent drop-out and erratic operation. While the Mk II/Mk III transmitters 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.

Note 2: Voltage is specified at the terminals of the printed circuit board of the device, user must ensure there is sufficient voltage after the cable voltage drop. Power supplies for all units must be able to supply burst currents to prevent drop-out and erratic operation. The Mk V transmitter can run at a ping rate of up to 5 Hz, and during the ping event at high rates it can draw a large current burst (up to 3A depending on supply voltage and wiring impedance) for a very short time (500 uS). An ROV battery can easily accommodate these bursts. A simple PoE injector or power supply may brown out during these events, which will cause the transmitter to reboot. For bench testing we recommend turning off high-rate pinging.

Note: Resolution ≠ Accuracy! See accuracy expectations.