BTL – 07p
operating manual & user's guide
page 5
Connection to the mains
Read the "Safety Instructions" before using instrument!
Make sure that the mains switch is at "0". Connect mains cable to the connector on the rear panel with mains 230
V/50 Hz. Switch the main switch to "1". The program number, the preset treatment time, and the ultrasound
frequency are lit up on the display.
Choose the irradiation surface area and the emitter head (1 cm
2
or 4 cm
2
). Connect the emitter head with emitter
head connector on the front panel. Never change emitter heads during ultrasound generation. Change emitter
heads only if the instrument is switched off with the START/PAUSE button (17). Use RESET button if you begin
therapy with another patient.
Choosing the ultrasound frequency
Use the FREQUENCY push-button (15) to choose the 1 MHz or 3 MHz frequency. The green diodes (13),
situated to the left of the FREQUENCY button, indicate which of the two frequencies is activated. Both
frequencies can be applied with either emitter head sizes. Choose a 1 MHz frequency if you wish to
therapeutically affect deep tissues and a 3 MHz frequency for superficial tissues.
Choosing and connecting emitter head
Two emitter heads of either 1 cm
2
or 4 cm
2
can be used with the BTL-07p.
Connect the emitter head to the Connector (11, 21). Connect the 1 cm
2
emitter head to Connector (11) and the
4 cm
2
head to Connector (21). The LED diode (19) indicates which emitter head is in use. Both emitter heads can
be used for either continuous or pulse modes and for both frequencies. The emitter head must be connected
before intensity of acoustic output is set. The therapy cannot start without connecting and identifying the emitter
head.
The red diode on the emitter head indicates insufficient contact between the emitter head and the tissue.
If contact is insufficient, the control light lights up red.
The countdown on the TIME display (3) stops. Power absorption (indicated by the light blinking) stops. Therapy is
interrupted until contact is restored.
If there is proper contact, the control signal on the emitter head will light up green.
Choosing PPR (pulse-to-period ratio)
Different pulse-to-period ratios are related to different ultrasound thermic effects. Continuous ultrasound deep
ly
heats tissues. A 1:2 or 1:4 PPR ultrasound only has a moderate thermic effect and 1:8 or 1:16 PPR ultrasound
has an athermic.
Use the DUTY CYCLE push-button (9) to set the PPR. The activated PPR is indicated by the green diode (17).
Choosing pulse frequency
The pulse ultrasound (1:2 - 1:16 PPR) allows the user to choose one of the pulse frequencies and the time
duration.
The BTL-07p
uses 50 Hz and 100 Hz pulse frequencies. Press the PULSE FREQUENCY button (16) to switch
between the two frequencies. The activated pulse frequency is indicated by the diode next to the PULSE
FREQUENCY button (14). Impulse and pause duration of both frequencies are specified in the following tables.
Frequency 50 Hz, period duration 20ms
Frequency 100 Hz, period duration 10ms
Duty cycle
Impulse
duration
Pause
duration
Duty cycle
Impulse
duration
Pause
duration
1: 2
10 ms
10 ms
1: 2
5 ms
5 ms
1: 4
5 ms
15 ms
1: 4
2.5 ms
7.5 ms
1: 8
2.5 ms
17.5 ms
1: 8
1.25 ms
8.75 ms
1: 16
1.25 ms
18.75 ms
1: 16
0.625 ms
9.375 ms
Choosing intensity of acoustic output
Press up/down arrow push-buttons (7) to set intensity. Continuous mode employs intensities up to 2 W/cm
2
, pulse
mode up to 3 W/cm
2
(in steps of 0.1 W/cm
2
). Pressing down the up/down push-button will increase or decrease
intensity.