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3. Technical parameters and specification
3.1 Product specification
Product Name
Model
Power supply
Safety category
Product service life
Product dimensions
Storage time
software version
Transcutaneous Electrical Nerve Stimulator
KTR-230
d.c.3V 30mA（CR2032）
BF type
≥ 3 years
Φ51×13.5 (mm)
≤6 months
KTR- 230-119A-V1.0
3.2 Environmental conditions
Normal working condition
Storage condition
Transportation condition
Temperature
+5℃-+40℃
-25℃-+70℃
-10℃-40℃
Humidity
15%-93%RH
0-93%RH
15%-93%RH
Barometric pressure
700hPa-1060hPa
700hPa-1060hPa
700hPa-1060hPa
3.3 Electrical performance
Pulse frequency
Pulse width
Direct current component
Peak pulse voltage
Electric quantity of single pulse when
the output amplitude is maximum
Maximum output energy of single pulse
The effective value of maximum output
amplitude
The peak value of output voltage when
conducting open loop measurement
The effect of output end open circuit
and short circuit
Adjustment of output amplitude
Rated load impedance
Timing time of therapy stimulator
1Hz—120Hz
20μs～400μs
0V
<60V
﹥7μC
≤300mJ
≤25V（50mA）
≤500V
Can endure the effect of output end
open circuit and short circuit and the
performance should not be weaken.
Continuous and uniform, minimum
output should be no bigger than 2% of
maximum output.
500Ω with a permissible deviation
of ±10%
15 minutes with a permissible
deviation of ±10%
The average working time with
no malfunction
Product software version No.
≥1000 hours
KTR-230-119A- V1.0
4. Safety precautions
■ The purpose of the warning signs and symbols in this user
manual is to make sure that the user can use this product
safely and correctly, and thus prevent damage to the user
or other people.
■ Warning signs, symbols and their meanings are as follows:
Warning signs Meaning
Indicate when wrongly used, it may cause personal
casualty or serious injury.
Indicate when wrongly used, there is a possibility of
personal casualty or serious injury.
Indicate when wrongly used, there is a possibility of
personal injury or things get damaged.
Danger
Warning
Warning
Attention
Danger
Never use this stimulator along with other medical electronic
stimulators, such as cardiac pacemaker, artificial heart-lung which
are used to maintain life, and electrocardiograph. Otherwise it may
cause danger.
If the user is using high frequency surgical equipment and this
therapy stimulator at the same time, then there might be burn in
the place where the electrode slice is pasted to or damage to the
stimulator; If this stimulator is used in the vicinity (1m) of short
wave or microwave therapy stimulator, then the output of this
stimulator might not be stable.
1. Do not use this stimulator in places where there are high heat,
inflammables and electromagnetic radiation.
2. Do not use this stimulator while bathing or sleeping.
3. Do not modify the stimulator, or else electric shock might occur.
4. Do not inhale or swallow small parts, which might lead to
life-threatening condition.
5. Do not conduct servicing or maintenance while the device is in
use.
6. Do not apply the electrodes near the thorax, which may increase
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