PATHWAY
®
MR-20 OPERATOR’S GUIDE
34
Ratio Display Mode
RATIO A/B MODE: In the example above, the 1:1 ratio has been exceeded and the
LCD Bar Graph is above the tip of the arrow resulting in an audible tone. 1.9 and 1.6
represents the absolute microvolt level of Channel A and Channel B respectively.
A/B and 1.2 represents the percentage value of EMG A to EMG B.
To change the ratio goal, press the Up Arrow Key for Channel A to increase, to
decrease, press the Down Arrow Key for Channel A. When adjusting the ratio goal,
A/B will change to GL=. Use single key presses to increase or decrease the ratio goal
by 0.1 µV. Hold the key down for larger changes. Release the key when the desired
ratio goal value is displayed in the GL=. The position of the goal arrow will change to
reect the new ratio goal. The Pathway
®
MR-20 will return to the newly established
ratio in a few seconds.
The numeric display shows the individual EMG A and EMG B microvolt levels as well
as the ratio of EMG A to EMG B. This function generates a very clear comparison of
the activation of one muscle to another. It may be used in bilateral training, or to train
activation of one muscle while inhibiting an opposing muscle.
In RATIO A/B MODE, pressing either of the B arrow keys temporarily halts the
operation of the device, freezing the display. This allows the values at any point in time
to be easily recorded. Press either of the B arrow keys to resume operation.
CHAPTER 2: OPERATION
Channel
“A”
Channel
“B”
Percentage
of Channel A
to Channel B
RATIO A/B MODE has a default ratio
goal of 1:1 represented by the tip of the
arrow. The top of the LCD Bar Graph
peaks at 10:1 and the bottom of the
LCD Bar Graph is 0.1:1.
Ratio of Channel A
to Channel B
Absolute microvolt level
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