MPH PYTHON III Operator's Manual page 22

3) In some situations, such as a car passing a large truck, the fastest target (the car) will never
be the strongest target, and there may not be any opportunity to lock it.
4) While visual identification of the strongest target is straight forward, identification of the
fastest requires more attention and information. In a situation with a car passing a large truck,
the fastest window may show the speed of that vehicle or a much faster vehicle somewhere
else within the range of the radar. The fastest vehicle is selected without regard to its signal
strength. It cannot be assumed that the fastest is the second strongest target.
5) Range of fastest targets is fixed at a little under full. Changing range on the front panel makes
no change in fastest target range.
Description of the same direction mode
The PYTHON III allows the tracking of targets moving in the same direction as the patrol
vehicle. Same direction operation requires much more attention from the operator than opposite
direction. This mode is best used in light traffic where visual target identification is easier.
Operation of the same direction moving mode
Same direction moving mode is selected by pressing the S/O button on the remote control when
the radar is in moving mode.
This mode requires more attention and decision making on the part of the operator. When in same
direction moving mode, the FAST button on the remote toggles the "faster / slow target vehicle"
function.
The PYTHON III cannot determine the difference between a target traveling faster or slower
than the patrol vehicle patrol. For example at a patrol speed of 50 mph, a target running 40 mph
(10 mph slower than patrol) and a target running 60 mph (10 mph faster than patrol) produce the
same signal at the radar. Input from the operator (a button push) is required to tell the radar what
math to use in the calculation. The operator must visually determine what vehicle is being
displayed in the target window and press the FAST button until the Fast indicator below the middle
window is on if the target speed is greater than the patrol speed.
Pressing the Fast button again will cause Fast indicator to blank and change the calculation of the
target speed to be less than the patrol speed. The radar will stay in "Slower" mode until the FAST
button is pressed again.
20