EMS COMBINATION 850 Manual page 29

In constant current mode the electrode impedance is monitored during
treatment and if a high impedance is detected on either channel, the output is
terminated and an alarm sounded. In constant voltage mode the electrode
impedance monitor is disabled as the output current is automatically reduced if
the electrode impedance increases. Constant voltage mode is useful for
combination therapy and with internal (vaginal or anal) electrodes.
Pressing the down cursor key again will move the highlight bar to 'AMF'
(Amplitude Modulation Frequency). Pressing the right cursor key will change
the AMF to the next preset value and pressing the left cursor key will change
the AMF to the previous preset value. A list of the preset AMFs is given on
page 17 of this manual.
value with ENTER. If a peak frequency is set below the base frequency, then
the base and peak frequencies are swapped automatically.
Press the down cursor key again and the highlight bar will move to 'Form'.The
Form determines the way in which the AMF sweeps between the base and peak
frequencies. Three standard forms are available with the Combination 850. The
1|1 form gives 1 second at the base frequency followed by 1 second at the peak
frequency. The 6|6 form gives 5 seconds at the base frequency, sweeps linearly
to the peak frequency in 1 second, followed by 5 seconds at the peak frequency
and finally sweeps back to the base frequency in 1 second.
COMBINATION 850
To set an AMF which is not
in the preset list, first
choose the preset AMF
nearest to that required (not
essential) and then press the
ENTER key. The base
frequency will be
highlighted. Use the up and
down cursor keys to
increment and decrement
the frequency. If the up or
down key is held down, the
key will repeat. When the
base frequency is correct,
press ENTER. The
highlight bar will move to
the peak frequency. Set the
peak frequency in the same
way using the up and down
keys and confirming the
29 ISSUE 2