MPH Ranger EZ Specifications
The MPH Ranger EZ 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 EZ 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.)
Stationary Operating Speed:
Stationary mode operating speed range is from 15 mph up to 200
mph.
Moving Operating Speed:
Patrol Speed range is 20 mph to 100 mph in highway mode and 12
mph to 80 mph in city mode. (When the speedometer interface is
active, the patrol speed range is extended to 120 mph.)
In opposite direction mode, Target Speed range is 12 mph up to a
closing speed of 200 mph.
In same direction mode, Target Speed range is patrol speed ±70%.
There must be a minimum difference of 4 mph between target and
patrol speeds. Same direction targets will not be displayed unless
the patrol speed is at least 20 mph.
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).
Automatic Performance Check:
The radar automatically and invisibly checks itself for proper
operation. If an error is detected, the fault is indicated in the
middle window. Proper operation is indicated by the OK light.
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