User's Manual

13
MPH RANGER Specifications
The MPH RANGER is designed for convenient use by law enforcement agencies to
measure the speed of motor vehicles when operated from a moving or stationary patrol
vehicle. The RANGER utilizes the well-known and legally accepted Doppler principle and
has been type accepted by the Federal Communications Commission.
A. SYSTEM SPECIFICATIONS
Nominal Power Supply Voltage: 13.6 Vdc
Low Voltage Condition Level: 10.8 Vdc. When supply voltage decreases below
this, a message of “Lo” is displayed on the front
panel to warn the officer of a low voltage condition.
Power Requirements & Voltage: 10.8 Vdc-16.5 Vdc
(13.6 Vdc Nominal)
Current draw at 13.6 Volts: Standby, no displays (0.3A typical)
Front antenna “on”, no target (0.4A typical)
Front antenna “on”, with target (0.5A typical)
Front antenna “on”, during LED test (0.7A typ.)
Operating Temperature Range: -30°C (-22°F) to 60°C (+140°F)
Operating Humidity Stability: Operates normally up to at least 90% relative
humidity at 99°F (37°C).
B. DISPLAY UNIT
Speed Display: Three windows for LED speed display on Lexan
scratch resistant front panel. LED displays
automatically adjust brightness to ambient
conditions.
Speed Display Windows: Target Speed (red, on the left side of the display)
Auxiliary (yellow, in middle of display, shows
locked target speed or fastest target speed.)
Patrol Speed (green, on the right side of display)
LED Indicators: Mov (moving mode)
Sta (stationary mode)
Fast (fastest vehicle mode)
T-Lock (locked target speed)
X (standby)
Patrol car (transmitting)