© 2017 JTECH Medical MN022_M
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Conventions Used Throughout This Manual
The following conventions are used in the manual to describe the Console, instruments, and operation:
•
Calibration - The process of using a known force or angle to adjust the instrument parameters so that any
arbitrary force or angle input can be accurately determined.
•
Control Stick - The singular multi-axis button on the Commander Echo Console, which can be moved up,
down, left, right, and pressed, in order to operate the Console.
•
CV - The coefficient of variation (CV) is defined as the ratio of the standard deviation (σ) to the mean (μ), or
in mathematical terms, CV = σ / μ. In probability theory and statistics, CV serves as a normalized measure
of variability to help describe the relative scatter or spread of a data sample. A smaller CV suggests a higher
level of consistency. A calculated CV less than 15% (0.15) is often used as an indicator of consistent effort
by subjects during biometric strength tests. This value is displayed in the review screen of the Console.
Commander Echo calculates CV using population standard deviation. Note that this differs from CV
calculated using the sample standard deviation, which can give a very different result.
•
Device - Refers to both the Commander Echo Console and any Commander Echo instrument.
•
Exam - This term is used to refer to a group of tests performed with the same instrument.
•
Hold - Indicates that the Control Stick should be pressed and held.
•
Instrument - This refers to a JTECH Medical testing device, used in conjunction with the Commander Echo
Console to record test data.
•
Press - Indicates that the Control Stick should be pressed and released.
•
Repetition, or Rep - A single instance of measuring performance for a designated instrument.
•
RF - Radio Frequency.
•
ROM - Range of Motion.
•
Side - Either left or right, noted as L and R, respectively.
•
Test - Used to refer to a group of repetitions performed for one or more sides with a given instrument.
•
Threshold - The minimum force or angle that must be exceeded to start or end a repetition.
•
Zero or Zero Calibration or Set Zero - The process of determining the instrument parameters when no force
or angle is applied to the instrument
Conventions Used Throughout The Console Menus
The following additional conventions are used throughout the Console menus:
•
Cal. - See Manual convention Calibration.
•
CV% - See Manual convention CV (Coefficient of Variation).
•
DEF% - Percent Deficiency, a value calculated from test information and displayed in the review screen.
•
DEG. - Abbreviation on the Console for degree.
•
DEL. ALL - Abbreviation on the console for Delete All. A global function that deletes all test data.
•
DIFF. - Abbreviation on the Console for difference. A calculated value for the Maximum angle.
•
FAT% - Fatigue Percent, a value calculated from timed test information and displayed in the review screen.
•
INC - Abbreviation on the Console for Inclinometer.
•
MMT - Abbreviation on the Console for Manual Muscle Tester.
•
Press any key - Indication to press the Control Stick in any direction or into the console.
•
Press Enter - Indication to press the Control Stick into the console.
•
PRI. - Abbreviation on the Console for Primary Inclinometer.
•
POS - Refers to the calibration position for the Inclinometer.
•
Ready Time - Starting delay before a test rep begins recording data, this is used to ensure transient forces
are not recorded.
•
REPS - See Manual convention Repetition.
•
REV - Revision. Hardware Rev is specified on Device label. Firmware REV is noted in the information screens
•
SEC. - Abbreviation on the Console for Secondary Inclinometer.
•
SFG - Abbreviation on the Console for Static Force Gauge.
•
SN - Serial Number also referred to as device ID#.
•
WT. CT - Weight Count. Instrument reading of a known physical value which is not neutral or minimal.
•
Zero CT - Zero Count The value of a force or angle input when the instrument is neutral or equal to zero.
