EMS COMBINATION 850 Manual page 30

The 6/\6 form sweeps from the base to the peak frequency in 6 seconds and
then back to the base frequency in 6 seconds. Use the left or right cursor keys to
select the required form.
Press the down cursor key again and the highlight bar will move to 'Vector'.
When the vector option is off, the A and B outputs produce equal intensities
(current or voltage dependent on the output mode). When the vector option is
on, the relative amplitude of the outputs is slowly varied. Over a ten second
period channel A output rises smoothly from 80% of its normal amplitude to
100% while channel B falls from 100% to 80%. During the next 10 seconds A
falls while B rises and so on. The effect is to move the physical location of the
point of maximum stimulation in the tissue and therefore, increase the
treatment area. The vector option is turned on and off using the left or right
cursor keys when 'Vector'is highlighted.
When all the settings are as required, select either the 2-way output lead for
2-pole interferential therapy or 4-way output lead and connect it to the
interferential output socket on the front of the unit (see figure 1).
Attach suitable electrodes to the patient and connect to the output lead using the
blue and yellow cables provided. See section on Electrodes for further advice on
applying these.
Slowly advance the interferential output control (see figures 1 and 3). It will be
felt to click on. If the treatment time is zero, then the treatment time on the
LCD with flash and the unit will give an intermittent alarm until the control is
returned to its OFF position.
If all settings are valid then the interferential treatment indicator on the control
panel will light and the treatment time will begin to count down from its set
value.
Always advance the control slowly. If the control is advanced too quickly
initially then the Combination 850 will not energise its interferential output and
the output display on the LCD will flash. Turn off the interferential output
control and try again.
Slowly advance the interferential output control until the patient feels the effect
of the applied current. The output display will show the average of the peak
currents or voltages of the two channels.
When the output mode is constant current, if the unit detects a high electrode
impedance at any time during treatment then the interferential output is
immediately terminated, the output current display will flash and an
intermittent alarm will sound. Turn the interferential output control off and
check that the electrodes are secure, and the sponges are damp.
COMBINATION 850 30 ISSUE 2