WHALETEQ HFPA150 User manual

HFPA150 | User Manual
www.whaleteq.com
Page 2 of 21
1. Introduction
HFPA150 is a unique tester specifically designed for the testing of neutral
electrode (NE) impedance in electrosurgical system. The HFPA150 is built
to satisfy the testing requirements for contact impedance test as stated
in IEC60601-2-2:2009.
According to IEC 60601-2-2:2009 clause 201.15.101.6, the impedance of the
electrical contact between the surface of the NE application site and the NE
cord connection shall be low enough to prevent a risk of patient burn due
to ohmic heating during the passage of HF surgical current. It is evident that
hazard of patient burn during the use of electrosurgical system is present.
The main contribution to the risk of patient burn is caused by the high
impedance of the NE application site and the NE cord connection. Thus, this
safety test is especially important for the neutral electrode manufacturers.
The HFPA150 generates specific NE impedance test signals per requirement
of the IEC standard. The built-in generator is capable of generating signals
with frequency ranging from 50 kHz to 5 MHz, producing current over 200
mArms, and sine wave with THD < 0.3%. The HFPA150 is built with high
stability output, adjustable frequency and gain functions. In addition to
neutral electrode test, it could also be used as a measurement tool for
general purpose generator where the specifications are appropriate.
Features:
⚫A sine wave generator: user may adjust the frequency and gain to
meet the needs of high-power sine wave output.
⚫Stable frequency output: equipped with DDS (direct digital synthesis)
technology, a frequency synthesizer for generating arbitrary waveforms

HFPA150 | User Manual
www.whaleteq.com
Page 3 of 21
from a single, fixed-frequency reference clock. Together with an
embedded DC fan for ventilation and control of the internal
temperature, the HFPA150 is not susceptible to temperature
fluctuation which facilitates great output stability. Compared to a
conventional sine wave generator which creates waveforms based on
the charging and discharging of the capacitor, the stability of
waveforms is therefore determined by the capacity of the capacitor.
However, the capacity change is proportional to the ambient
temperature while inversely to the generated frequency. Thus, a
common problem with the conventional sine wave generator occurs
with the heat generated from prolong usage and resulted with the
lower frequency generated.
⚫Compliance with IEC60601-2-2: 2009 testing requirements: the
HFPA150 is designed according to the standard of the neutral
electrode (Neutral Electrode, NE) contact impedance test.
⚫Produce current over 200 mArms (~ 570 mApp), compliance with
the standard requirement.
⚫With the amplified built-in sine wave generator, the output voltage can
be up to 10 Vrms (at 50 Ω impedance).
⚫Capability to measure to the upper limit of the contact impedance of
the neutral electrode at 50 Ω.
⚫Frequency is adjustable from 50 kHz to 5 MHz.
Note:
An oscilloscope shall be used with the HFPA150 to measure the output
voltage and current. The HFPA150 is equipped with a built-in conversion
circuit, so that no additional current probe is required to measure the
current value. User may simply connect the "Current Monitor" port with an

HFPA150 | User Manual
www.whaleteq.com
Page 4 of 21
oscilloscope to obtain the current value. (For details, please refer to Chapter
6B, < How to monitor the HFPA150 output voltage and current>).
2. Safety Summary
Please review the following safety warnings to avoid injuries and prevent
damage to this product or any related products. To avoid potential
hazards, only use the product in accordance with this instruction. Only
WhaleTeq qualified professionals should repair/adjust the operation
program. To avoid fire or personal injuries, only use the original factory-
supplied power supply.
•
The equipment shall be operated by a qualified electrical engineer or a
professional with equivalent qualification and knowledge in the
principle of high-frequency insulation and oscilloscope use. Please read
this user manual carefully for the working principles and possible risks
before first operating the HFPA150.
•
If the power output is over 2 watts, pay special attention to the heat and
power tolerance while connecting the load. Always use safe work
practices when using electrical equipment to avoid the risk of electric
shock and fire.

HFPA150 | User Manual
www.whaleteq.com
Page 5 of 21
Main applications:
IEC60601-2-2:2009 Measurement of neutral electrode contact
impedance. Recommended test instruments:
Note 1: MEDTEQ HFIT 8.0, High-Frequency Insulation Tester: For insulation and current leakage
test of cord and surgical instruments. Visit: https://www.medteq.net/testequipment/hfit8
Note 2: No current probe is required when the HFIT 8.0 is used as a generator. In the NE thermal
performance test, IEC standard stated that the NE under test shall be applied on human skin,
surrogate media or test devices with electrical and thermal equivalent properties. Since impedance
varies with different contact surfaces, in some cases (especially with high impedance), the HFIT 8.0
is not capable to provide current up to 770mArms (maximum output of HFIT 8.0 is150W), and in
such case, an ESU along with a current probe will be required to conduct the test.
Testing of neutral electrode according to IEC 60601-2-2:2009
201.15.101
Neutral Electrodes
HFIT 8.01
HFPA150
Oscilloscope
Heat induction
meter
DC Power
Supply
Digital
Multimeter
Remark
201.15.101.1
General requirements for
NEUTRAL ELECTRODES
Not testing
required
201.15.101.2
NE code attachment
v
v
201.15.101.3
NE cord connector, no
conductive parts on patient
Use test finger
201.15.101.4
NE cord insulation
v
v
201.15.101.5
NE thermal performance2
v
v
v
Refer to Note2
201.15.101.6
NE contact impedance
V
v
201.15.101.7
NE adhesion
Non-electrical test
201.15.101.8
NE shelf life

HFPA150 | User Manual
www.whaleteq.com
Page 6 of 21
3. Specifications
Parameters
HFPA150 Specification
Frequency range
50 kHz to 5 MHz
Maximum voltage
11 Vrms (~31 Vpp), ≥50 Ω
Maximum Current
>200 mArms, ≤50 Ω
Waveform
Sine
Frequency Response
< ±0.8 dB, 50 Ω
THD
<0.3% (-50.4 dB), at 200 mArms, 50 Ω, 1 MHz
Impedance
<3.2Ω+ j0.4 µH
Auxiliary equipment for
contact impedance test
Oscilloscopes (Ch1 connects with voltage probe to
measure voltage, Ch2 connects with HFPA150 current
monitoring interface to measure the current value)
Current Measurement
Accuracy*
< ±5%
Frequency Range
50 kHz to 5 MHz
Connector Type
BNC
General
Power Source
Power Adapter
Input: 100 –240 V, 50/60 Hz
Output: 12 VDC / 2 A
Environment
10 oC to 40 oC, 30% to 90% RH
Dimensions / Weight
18X18X4.8 (cm, LxWxH) / 0.7 kg
*Use with original factory-supplied connection cord (BNC-BNC) and test cords (BNC-Alligator). See
Chapter 5 for cord specifications.

HFPA150 | User Manual
www.whaleteq.com
Page 8 of 21
Figure 2. HFPA150 front panel
Front panel labels –Figure 2.
Item
Label
Name
Description
1
Output
Signal output port
Signal output. BNC connector.
2
Frequency
Frequency
adjustment knob
Turn clockwise to increase frequency
and turn counter clockwise to
decrease frequency
3
100KHz
100 kHz indicator
(Green)
Illuminates to indicate for 100 kHz
selection. Frequency is adjusted to be
100 kHz per step.
4
10KHz
10 kHz indicator
(Yellow)
Illuminates to indicate for 10 kHz
selection. Frequency is adjusted to be
10 kHz per step.
5
100K/10KHz
Frequency
100 kHz/10 kHz
Switch button
Press for switch between 100 kHz and
10 kHz.
6
Gain
Gain knob
Turn clockwise to increase amplitude
and turn counter clockwise to decrease
amplitude
*Read Chapter 6C <Gain
Adjustment> before operation
7
Gain
Indicator
Gain indicator
(Green)
The flashing light indicates signal
output. The light will be solid green
when there is no signal

HFPA150 | User Manual
www.whaleteq.com
Page 9 of 21
output or when the reset button is
pressed.
8
Gain Reset
Gain reset
Press to reset gain to zero
9
Current
Monitor
Current monitoring
port
Connect the oscilloscope with the
original factory-supplied BNC cord to
monitor the current value. (The
oscilloscope shows 1 mV is equivalent to
1 mA of current flowing through the
DUT.)

HFPA150 | User Manual
www.whaleteq.com
Page 10 of 21
5. Original factory-supplied connection cords
HFPA150 is capable to measure the output current value through a current
monitor port with direct connection to the oscilloscope using the BNC-BNC
cord. This unique design saves cost and the need of an expensive current
probe. A BNC-Alligator cord is supplied for the connection to the signal
output port in order to pass the test signal to the connection points and
metallic plate of NE.
To control the accuracy of monitoring the current to ±5%, the HFPA150
measures the current by means of a 1 Ω shunt together with the frequency
compensation circuit. According to IEC60601-2-2 clause 201.15.101.6, NE
contact impedance test frequency shall range from 200 kHz to 5 MHz. As
the frequency changes, the small capacitance of the test cord with the
HFPA150 resistor results in noticeable RC effect, leading to significant
deviation of frequency response.
The original factory-supplied cords with the HFPA150 are designed to
resolve the above described issues. It is strongly recommended to use the
original factory-supplied cords for measurements. The specifications of the
cord are as follows:
a) BNC-BNC cord
Exclusively designed for HFPA150 current monitoring, the BNC-
BNC cord connects the current monitoring port with the
oscilloscope. The indication of 1 mV is equivalent to 1 mA current
flowing through the DUT.

HFPA150 | User Manual
www.whaleteq.com
Page 11 of 21
Figure 3. BNC-BNC cord
Length
50 cm
Cord Capacitor
50 pF ± 5 pF
Impedance
50 Ω
Type of cord
RG58U
b) BNC-Alligator cord
The BNC alligator clips on the short cord is specifically designed for
NE tests. It connects the HFPA150 with the DUT. Each of the alligator
clip connects the wire connection port of the DUT (neutral electrode)
and the metallic plate/prosthesis
Figure 4. BNC-Alligator cord

HFPA150 | User Manual
www.whaleteq.com
Page 12 of 21
Length
20 cm
Cord Capacitor
≤20 pF
Impedance
50 Ω
Type of cord
RG58U
Note:
When using the BNC-Alligator cord, avoid contacting the two alligator clips
together. Contacting the two alligator clips under no-load condition can
cause output short circuit, equipment damage, and possible risk of fire and
electric shock.

HFPA150 | User Manual
www.whaleteq.com
Page 13 of 21
6. Instructions
A. Power
DC Power Port
1. Connect the power adapter (100 V –240 V, 50/60 Hz)
* Always use the original factory –supplied power
supply.
Powering up
1. Switch the HFPA150 on.
2. Upon powering on the HFPA150, the green “Gain
Indicator” and the yellow “10KHz” indicators
illuminate. Frequency initiates at 50 kHz with no
voltage through “Output” port.

HFPA150 | User Manual
www.whaleteq.com
Page 14 of 21
B. How to monitor the HFPA150 output voltage and current
current. CH1 voltage and frequency indicates the output voltage and
frequency.
Figure 5. Test wiring diagram
* To achieve HFPA150 current monitoring accuracy (<± 5%), use the
original factory-supplied connection cords
HFPA150 measures the output voltage and current through two connecting
ports of the oscilloscope:
1. Connect the original factory-supplied BNC-BNC cord* with the "Current
Monitoring” port and oscilloscope CH2.
2. Connect the “Output” port with the BNC-Alligator cord. Connect the other
end of this cord to the analytes (DUT) and voltage probes connect with the
oscilloscope CH1 (as shown in Figure 5)
3. Power up the HFPA150, turn the "Gain" knob clockwise to read a 50 kHz signals
from CH1/CH2. The HFPA150 is working properly when amplitude increases
with gain increase. The 1 mVrms at CH2 is equivalent to 1 mArms

HFPA150 | User Manual
www.whaleteq.com
Page 15 of 21
C. Parameter adjustment
Gain
1. “Gain” knob: use for gain output adjustment.
Monitor the oscilloscope to adjust the desired
voltage/current. Turing the knob clockwise to
increase the gain; counter-clockwise to reduce the
gain.
2. A flashing “Gain Indicator”: indicates signal being
output. The light will be solid green when there is no
signal output or the reset button is pressed.
3. “Gain Reset”: Press to reset gain to zero. For
safety reason, always reset gain when replacing
analytes.
Notes:
1. While doing gain adjustment, always monitor the current/voltage by an
oscilloscope. Overcurrent will activate the protection circuit. See Chapter 7
<Overcurrent protection>
2. When replacing the analyte, press "Gain Reset" to avoid hazard to operators
or damage to HFPA150 unit due to sudden load reduction and current
increase.
3. While turning the “Gain” knob to increase gain, the power output also
increases accordingly. If the power output is over 2W, pay special attention
to the heat and power tolerance while connecting the load. Always use safe
work practices every time electrical equipment is used to avoid the risk of
electric shock or fire.
4. While using the BNC-Alligator cord, avoid contacting the two alligator clips
together. Contacting the two alligator clips under no-load condition can
cause output short circuit, equipment damage, and possible risk of fire and
electric shock.

HFPA150 | User Manual
www.whaleteq.com
Page 16 of 21
Frequency
1. "Frequency" knob: use for frequency output
adjustment. Monitor the oscilloscope to adjust the
desired frequency. Turning the knob clockwise to
increase the frequency; counter-clockwise to reduce
frequency.
2. “100KHz” indicator: Illuminates to indicate for 100
kHz selection. Frequency is adjusted to be 100 kHz per
step.
3. “10KHz” indicator: Illuminates to indicate for 10 kHz
selection. Frequency is adjusted to be 10 kHz per step.
4. "100KHz/10KHz Frequency" switch button: Press for
switch between 100 kHz and 10 kHz.

HFPA150 | User Manual
www.whaleteq.com
Page 17 of 21
7. Overcurrent protection
To ensure the safety operation and avoid the risk of damage to equipment due
to improper use, the HFPA150 is built with a set of overcurrent protection circuit.
When “Detected circuits” detects an overcurrent, it will target the “Power
Amp (Turn Off)” to reduce immediately. In case the limit is reached, the “MCU”
receives the signal and subsequently adjusts the “Variable Amp” of the gain
value to “0”.
Figure 6 below illustrates the principle of the protection circuit activation.
Figure 6. Protective circuit block diagram
Instant current rise will results in an event that the impedance of the analyte is
very low or even short circuit. In such case, using firmware to control “
MCU
”
and further adjusting the gain value is not going to be responsive enough. The
protection circuit works in the way of turning on the hardware as soon as
overcurrent is being detected so that the “
Power Amp
” is reduced
immediately. At this point, waveforms will distort (Figure B) due to the current
decrease. There could also be no waveforms (Figure C) when the “
MCU
”
adjusts the “
Variable Amp
” to Low gain “0.”

HFPA150 | User Manual
www.whaleteq.com
Page 18 of 21
Both waveform distortion (Figure B) and no waveform (Figure C) indicate the
protection circuit is activated. Readjust the gain value (increase or decrease)
as needed.
Figure A: Normal waveforms on the oscilloscope display
before protection circuit is activated.
Figure B: Distorted waveforms after protection circuit shuts down the “
Power Amp
”.

HFPA150 | User Manual
www.whaleteq.com
Page 19 of 21
Figure C: No waveform displayed after “MCU”
adjusts the “Variable Amp” to Low gain “0.”
8. Test example
Test of ESU Neutral Electrodes Impedance Test
Refer to Figure 7 for HFPA150 connection for neutral electrode
contact impedance test.
1. Connect the original factory-supplied BNC-Alligator cord from the
"Output" port to the neutral electrode (NE) plates. Connect the red
alligator clip to the NE connector and the black alligator clip to the
adhesive metallic plate.
2. Connect the oscilloscope probe (CH1) to the same point as the red
alligator clip on the NE connector, and connect the ground end of the
probe to the adhesive metallic plate.
3. Connect the HFPA150 “Current Monitor” port and the oscilloscope
CH2 using the original factory-supplied BNC-BNC cord.
4. Adjust HFPA150 "Gain" and "Frequency" to CH2 200 kHz,
Vrms=200mVrms. (This indicates Irms=200mArms).

HFPA150 | User Manual
www.whaleteq.com
Page 20 of 21
5. Measure Vrms voltage of CH1. Use the equation Z=V/I to get the
contact impedance value.
Note: Turning the “Gain” Knob clockwise will increase gain and output
power accordingly. When the output voltage exceeded 10 Vrms while the
output current does not reach 200mArms, this is an indication that the
neutral contact impedance of tested negative plate is more than 50Ω.
(IEC60601-2-2:2009 clause 201.15.101.6 stated that the neutral electrode
impedance shall not exceed 50 Ω). Stop increasing the gain in such event and
record the rms voltage and current. Calculate the contact impedance value
for the neutral electrode.
6. Adjust the frequency to 500 kHz/1 MHz/2 MHz/5 MHz and repeat
step 4 and 5.
Figure 7. HFPA150 connection for
neutral electrode contact impedance test
Table of contents
Other WHALETEQ Test Equipment manuals

WHALETEQ
WHALETEQ SECG 4.0 User manual

WHALETEQ
WHALETEQ WECG400 User manual

WHALETEQ
WHALETEQ CMRR 3.0 User manual

WHALETEQ
WHALETEQ CMRR 2.0 User manual

WHALETEQ
WHALETEQ DFS360 User manual

WHALETEQ
WHALETEQ SECG 5.0 AIO User manual

WHALETEQ
WHALETEQ DFS100 User manual

WHALETEQ
WHALETEQ HRS200 User manual

WHALETEQ
WHALETEQ SECG 4.0 User manual

WHALETEQ
WHALETEQ MECG 2.0 User manual
Popular Test Equipment manuals by other brands

Shimpo Instruments
Shimpo Instruments DT-326B Operation manual

Tektronix
Tektronix TDS3000C Series Compliance and Safety Instructions

Dynisco
Dynisco ViscoIndicator Operation manual

BTE Technologies
BTE Technologies Multi-Cervical Unit user manual

Megger
Megger KMK 8 user manual

Tektronix
Tektronix TDS3000C Series Service manual