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CHATTANOOGA
GROUP INC.
Calibration Procedures
These calibration procedures apply to calibration of the Intelect
®
Legend
Ultrasound and Intelect
®
Legend Stim units. Following it is a calibration
procedure for the ultrasound applicators.
Intelect
®
Legend Stim
Calibration Procedure
Equipment Required:
Oscilloscope
Scope Probe (X10)
(2) 510-ohm Loads
A. Unit Startup and Fan Testing
1. Plug the 510-ohm loads into the output jacks. With the unit properly
plugged into its power supply, turn the unit on. The unit should beep once,
time and output screen should display and the fan should be blowing
inward. Check for excessive fan noise.
B. Stimulator Test
1.
IFC
: Connect scope probe across load on Channel 1. Press IFC and
heading of menu should display: Ch1-2: IFC. Press Up Intensity arrow to
increase Output to 50ma and press Start. Screen should change to opening
display listing: Channel 1 IFC at top and timer display in large letters
counting down from 15:00 and Output at 50ma. Below the output is: Ch2
IFC. Verify waveform is similar to that shown below with oscilloscope.
Move the oscilloscope probe to the Channel 2 load and verify that the
waveform is similar to that shown below using the oscilloscope. Press
Pause and observe the output. Main display will show a P beside the
output and output will drop to 0.0ma . Press Pause to restart and Stop to
reset.
IFC waveform; ‘scope set to 20V/div & .2mSec/div
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TM
34
Intelect
®
Legend Series Service Manual