ADS Environmental Services Model 4000 530017 A0 - Manual (Page 111)

Specifications A-3
Temperature
Measurement
On-board (standard) and off-board (optional)
temperature sensors
Clock Crystal-controlled, hardware clock/calendar (lithium
battery backed)
Switches 8-position identification switch
8-position option switch for selecting operating
parameters
Modem Board
Modem 1200 baud Hayes-compatible, non-autoanswer
Communication 1200 baud analog
Depth Subsystem
The following includes specifications for the ultrasonic depth
sensor, the pressure depth sensor, and the depth board in the
monitor.
Ultrasonic Depth Sensor
Housing Marine-grade aluminum
Dimensions 7.5 inches (19.05 cm) long x 4.25 inches (10.79
cm) wide x 0.875 inches (2.22 cm) high
Accuracy 0.125 inches (0.32 cm)
Deadband Less than 1 inch (25 mm)
Frequency 40 kHz
Range 10.0 feet (3.05 m)
Resolution 0.02 inches (0.05 cm)