Enraf Nonius TensMed 911, User Manual

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8.2 Intensity adjustment
The TensMed 911 has an intelligent intensity adjustment to minimise delay in waiting for the next work
period, and to avoid confusing the sensation from the two channels.
When either intensity button is pressed, the work/rest cycle is interrupted, and the other channel intensity
drops to zero. You can then set the intensity required. After you have finished setting, the intensity will
remain at the set level for 4 seconds, then both channels will begin the next rest period.
The first 2 presses of the Intensity button increase the output by about 6V. Thereafter each press of the
Intensity button changes intensity by about 1V in normal mode and 2V in high output mode.
If the Intensity button is held down > 0.5 sec it starts to scroll at two steps per sec (22 seconds to full
scale). If it is held > 2 seconds it scrolls at five steps per sec. When it is released it reverts to single steps.
The bar graph on the LCD shows the intensity selected.
The first segment lights as soon as intensity is above zero.
Each subsequent segment represents approx 4.5V (6 V in high intensity mode)
8.3 Safety features
If the unit is accidentally switched on and no other button is pressed within the next 5 minutes, the unit will
automatically switch off.
8.4 Additional features
The TensMed 911 unit has the following special features:
•
SOUND
: When the unit is switched on an audible beep will be emitted. When the unit is switched
off there will be two audible beeps.
•
ON/OFF LIGHT:
When the unit is on the LED light will light up. The light is located at the front of
the unit.
•
LOW BATTERY WARNING: There is a low battery detector in the unit. The LCD screen will flash
the symbol of a battery when the batteries need replacing.
8.5 Usage monitor
USAGE MONITOR (For Professional Use)
A Usage Monitor is included to help your medical advisor plan your treatment. Press and hold down the
PROGRAM and MENU keys together for five seconds. The top left corner of the LCD screen will display
the length of time in hours that the unit has been used for. Press the same two keys again for five
seconds to return the screen to normal. Note that if the unit is switched off with the LCD screen
displaying the Usage Monitor it will be in this same mode when switched back on.
While the Usage monitor screen is open, Press LOCK and MENU keys together for five seconds to set to
zero.
8.6 Basic Operation
8.6.1 Operation by Program
•
pre-set programs, identified by the letters A through to I.
•
A manual setting, identified by the letter m, where the user may select the constant or burst mode
and the frequency and pulse width.
The effect of each program varies from one person to another even if they have the same type of pain.
Choose the program which suits you best.
If you are using a TENS unit for the first time, and have not been advised otherwise, start with program A.
Programs A, D & F use the “Pain Gate” to block pain messages from reaching the brain.
Increase the intensity slowly until a strong but comfortable level of sensation is reached.
Keep your first treatment to 1 hour. Remember that you will have to increase the intensity during the
treatment to keep the sensation constant as the body gets used to the feeling.
Programs B, C and E produce a pulsing or tapping sensation associated with muscle contractions. It is
desirable that you experience a muscle contraction with these programs, therefore the intensity should be