Dynatronics Dynatron 550 Plus, Service Manual

Page: 33 / 153

Dynatron
®
850plus & 550plus
Treatment Instructions - IFC & PREMOD
25
NOTE: Prior to increasing intensity, electrodes must be placed on the patient and the lead(s)
attached to the device. Plug the lead(s) into the channel(s) the device selects for this
treatment. Give the remote stop cable to the patient. Consult
published sources for electrode placements, treatment settings, and treatment times. Make
sure electrodes make good contact with the patient’s skin over the entire surface area of the
electrode. Improper electrode contact may result in patient injury.
Detailed Interferential / Premodulated Setup
1. Press the IFC / PREMOD key once to choose IFC (interferential), or press this key twice
to choose PREMOD (premodulated).
When you choose IFC, channels 1 and 2 are automatically selected. When you choose
PREMOD, the first available channel is selected; make sure the patient lead is plugged
into the correct jack for the channel selected. The default settings for the modality are
automatically selected too, and if you wish to use the default settings, you can now
increase the intensity to the desired level, then press START.
If you wish to change the treatment settings, do the following steps.
2. Set TIME.
The default treatment time is displayed. Use the Time arrow keys to increase or decrease
the treatment time.
3. Customize
the FREQUENCY settings (optional).
The default High and Low frequency settings are:
The HIGH range is 80 to 150 Hz.
The LOW range is 0 to 10 Hz.
These ranges may be changed for a single treatment if desired, or new default
settings may also be saved to apply to all future treatment setups. The same default
setting applies to both interferential and premodulated treatments.
You may change the frequency settings for the range you plan to select for this treatment,
if desired (see illustration next page). Each premodulated treatment may have its own
frequency settings. After you press START to begin the treatment, frequency settings
will remain in effect for the duration of the treatment. If you save defaults during this
treatment, the new frequency settings you have entered become the defaults for this
modality. However, if you do not save the new settings, the unit will return to the current
default settings for the next treatment.
To modify the frequency during setup, first, press the toggle key and select either the
HIGH or the LOW frequency range. Next press the TIME toggle key to select FREQ.
The FREQ light under the TIME display becomes green and you will see the current
frequency range settings displayed in the Time and the Intensity displays as shown in the
diagram on the following page. With FREQ selected and either the HIGH or LOW range
selected, you may use the up/down arrow keys to change the upper and lower limits of
the range chosen. If you set both displays to the same value, the treatment will be
delivered at that single frequency rather than sweep through a frequency range.
When you are finished setting the frequencies, press the Time toggle key to return to the
Time display. After 10 seconds with no key presses, the Time display automatically
returns.