User Guide
PHA High-Voltage Differential Probe
Aug. 2020
RIGOL TECHNOLOGIES CO., LTD
RIGOL
Guaranty and Declaration
Copyright
© 2020 RIGOL TECHNOLOGIES CO., LTD. All Rights Reserved.
Trademark
RIGOL® is the trademark of RIGOL TECHNOLOGIES CO., LTD.
Publication
UGE33100-1110
Notices
RIGOL products are covered by P.R.C. and foreign patents, issued and
pending.
RIGOL reserves the right to modify or change parts of or all the specifications
and pricing policies at the company’s sole decision.
Information in this publication replaces all previously released materials.
Information in this publication is subject to change without notice.
RIGOL shall not be liable for either incidental or consequential losses in
connection with the furnishing, use, or performance of this manual, as well as
any information contained.
Any part of this document is forbidden to be copied, photocopied, or rearranged
without prior written approval of RIGOL.
Product Certification
RIGOL guarantees that this product conforms to the national and industrial
standards in China as well as the ISO9001:2015 standard and the ISO14001:2015
standard. Other international standard conformance certifications are in progress.
Contact Us
If you have any problem or requirement when using our products or this manual,
please contact RIGOL.
E-mail: service@rigol.com
Website: www.rigol.com
Information
Number
PHA User Guide I
RIGOL
General Safety Summary
CAUTION
This device involves the high-voltage measurement. To use the device safely and
ensure your personal safety, please carefully read and observe the instructions
specified in this manual before using the device.
Safety Terms and Symbols
Before using the device, read the following safety notices carefully.
The
symbol printed on the device indicates that the
user should refer to a corresponding topic in the manual
(marked with the symbol) before using the relevant
function.
In the manual, the symbol indicates particularly
important information that the user should read before
using the device.
The symbol printed on the device indicates high
voltage warning.
The symbol printed on the device indicates test
ground.
Safety Precautions
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CAUTION
Beware of high voltages to avoid electric shock. Understand the maximum input
voltage for the probe.
Do not operate in wet conditions or in an explosive atmosphere.
Before use, please check whether the exterior of the probe is damaged. If
damaged, stop using it.
Turn off the circuit under test before connecting it to the probe.
When connecting the BNC output cable of the probe to the oscilloscope or other
devices, ensure that the BNC terminal is safely grounded.
After measurement, turn off the circuit first and then remove the probe.
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Contents
Guaranty and Declaration .................................................. I
General Safety Summary .................................................. II
Safety Terms and Symbols ................................................ II
Safety Precautions ............................................................ II
General Inspection ............................................................ 1
PHA High-Voltage Differential Probe ................................. 2
Probe Components ............................................................ 4
Probe Component Description ............................................. 5
To Use the Probe ............................................................... 7
Preparation for Measurement .............................................. 7
Measurement Steps ........................................................... 7
Precautions During Measurement ........................................ 9
Failures and Troubleshooting ............................................ 11
Specifications .................................................................. 12
Technical Specifications .................................................... 12
Mechanical Characteristics ................................................ 13
Working Environment ....................................................... 13
Warranty ......................................................................... 14
Appendix ......................................................................... 15
Appendix 1 Max. Differential Mode Voltage vs Freq. ............ 15
Appendix 2 Package List ................................................... 15
IV PHA User Guide
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General Inspection
． Inspect the packaging
1
RIGOL has carried out strict inspections on each product before leaving
the factory. When you receive the product, please check whether the
packaging is intact. If the packaging has been damaged, do not dispose
the damaged packaging or cushioning materials until the shipment has
been checked for completeness and the probe has passed both electrical
and mechanical tests.
The consigner or carrier shall be liable for the damage to the instrument
resulting from shipment. RIGOL would not be responsible for free
maintenance/rework or replacement of the instrument.
． Check the probe
2
In case of any mechanical damage, missing parts, or failure in passing the
electrical and mechanical tests, contact your RIGOL sales representative.
3
． Check the accessories
Please check the accessories according to Appendix 2 Package List in
this manual. If the accessories are damaged or incomplete, please contact
your RIGOL sales representative.
PHA User Guide 1
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PHA High-Voltage Differential Probe
The PHA series high-voltage differential probe (hereinafter referred to as PHA
series probe) connects to the voltage under test through the high-voltage
differential input cable to convert the input high voltage into the low voltage,
and then display the waveforms on the waveform measuring instrument by
connecting its output interface to the waveform measuring instrument.
Main Features
High bandwidth to meet the requirements of most high-frequency test
system
PHA0150: 70 MHz;
PHA1150: 100 MHz
Diversified ranges and two attenuations to meet the requirements for
most common-mode test circuit
50X: 150 V (DC + peak AC);
500X: 1500 V (DC + peak AC);
5 MHz bandwidth limit
For the low-frequency signal measurement, this function can reduce the
noise and interference of high-frequency signals to meet the
measurement requirement for the switching frequency of most switching
transistors (FETs) in the switching power supply.
High-voltage differential input mode
Higher input impedance and lower input capacitive on the input terminal
ensure accurate and fast measurement
Sound common-mode noise rejection
Standard BNC output terminal, compatible with the waveform measuring
instruments of most manufacturers.
Audible alarm beeper and visible indicator blinking for sounding the alarm;
the alarm can be disabled manually
[1]
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Auto memory function, capable of automatically saving the working status
that was set before it is shutdown
[1]
Note
:
When the bandwidth is limited to 5 MHz, the internal output circuit of the PHA
series probe is connected to a 5 MHz low-pass network. The low-pass network
can reduce the high-frequency components, the noise, and the harmonics,
which is conducive to the testing and analysis of the low-frequency signals.
Measurement Scenarios
The PHA series probe is mainly used in scenarios where high-voltage floating
measurement is required, such as
Floating voltage
measurement
Switching power supply
design
inverter/UPS power
measurement
Strong current or high voltage
isolation measurement
Power conversion and other
related designs
welding/plating power
measurement
Inverter measurement Frequency conversion home
appliance measurement: induction
heating; induction cooker
Electronic ballast design Motor drive design
CRT display design Electrical engineering experiment
Low-voltage apparatus test Power electronics and power drives
experiment
PHA User Guide 3
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Button
Attenuation Switchover Button
Bandwidth Indicator
Attenuat
ion Indicator
Load Impeda
nce
Coaxial Cable
Out
put
Maximum Input
Voltage
-to-
Earth
H
igh-Voltage Dif
ferential In
put Cable
Volt
age
USB
Power Interface
Probe Components
The PHA series probe consists of PHA0150 and PHA1150. This manual takes
PHA1150 as an example to introduce the components of the PHA series probe.
Max. Differential Mode Input
High Voltage Danger Warning Sign
Overrange Indicator
Bandwidth Switchover Button
Audible Overrange Alarm
Indicator
Output Interface
Audible Overrange Alarm On/Off
Figure 1 PHA1150 High-Voltage Differential Probe
By default, 500X is selected for OVERRANGE; FULL is selected for BANDWIDTH;
and ON is selected for AUDIBLE OVERRANGE.
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Probe Component Description
High-Voltage Differential Input Cable
Used to measure the input voltage signal after connecting it to the
insulated plunger hook clip. It can be extended with the extender leads
(approx. 1 m). When using the extender leads, the frequency of the signal
under test should be below 5 MHz.
Max. Differential Mode Input Voltage
1500 V (DC + peak AC)
Overrange Indicator
When the voltage under test exceeds the probe range, the overrange
indicator lights on.
Attenuation Switchover Button
Press this button to switch over between the voltage range (attenuation)
settings of the probe. For the PHA series probe, two attenuation ratios are
available: 500X and 50X.
50X indicates that the max. measurement voltage is 150 V.
500X indicates that the max. measurement voltage is 1500 V.
Bandwidth Switchover Button
Press this button to switch over between the bandwidth. The PHA series
probe supports two bandwidths.
FULL: indicates the full specified bandwidth of the probe. For
PHA0150, its full bandwidth is 70 MHz; for PHA1150, its full
bandwidth is 100 MHz.
5 MHz: When measuring the low-frequency signal, to reduce the
interference of the high-frequency signal, you can select the 5 MHz
bandwidth.
PHA User Guide 5
Audible Overrange Alarm On/Off Button
ON: Turns on the alarm beeper.
OFF: Turns off the alarm beeper.
When ON, an audible alarm will be sounded once the voltage under test
exceeds the probe range.
Load Impedance
The output impedance of the probe is 50 Ω. When the input impedance of
the load (e.g. oscilloscope) is 1 MΩ, the measured signal amplitude is
input amplitude. When the input impedance of the load is set to 50 Ω, the
high-frequency amplitude-frequency characteristics will be flatter, and the
measured signal amplitude is half of the input amplitude.
USB Power Interface
A standard USB Type-C interface. It provides power with a standard USB
adapter. You can connect it with the oscilloscope to provide power for the
probe; or use the mobile power supply to charge for the probe. The power
specification should be DC 5 V, 1 A.
Output Interface
indicates a standard BNC output terminal, which is compatible with the
waveform measuring instruments of most manufacturers.
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To Use the Probe
Before using the current probe, make sure to refer to Safety Precautions.
Preparation for Measurement
1. Evaluate the amplitude of the voltage under test and check whether it is
within the voltage range of the probe. If it is beyond the max. range of the
probe, please replace a proper probe. Otherwise, the measurement would
be incorrect or the probe may be damaged. Even worse, this may lead to
safety accidents.
2. Prepare one power adapter (DC 5 V, 1 A).
3. Connect the probe to power source and have a 20-minute warm-up at
least. Meanwhile, prepare one measuring instrument (e.g. an
oscilloscope).
4. Please ensure that the device under test is powered off or the output is
disabled.
Measurement Steps
Check and ensure that the measurement system is safe. Make sure that the
above preparation for measurement is ready.
1. Connect the output cable of the probe to the input terminal of the
measuring instrument.
2. Use the USB Type-C cable to connect its one end to the specified power
adapter and the other end to the power interface of the probe. Insert the
power adapter into the socket to provide power to the probe. If the
indicators on the panel light on normally, it indicates that the probe has
been launched normally.
3. Select a proper range for the probe based on the measuring voltage.
4. Select the proper attenuation ratio of the measuring instrument based on
PHA User Guide 7
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the probe range. Then adjust the range of the instrument based on the
voltage under test.
5. Select a proper probe clip according to the object under test. Connect one
end of the clip to the input cable of the probe and connect the other end
to the object under test.
6. Turn on the device under test to start testing.
During testing, keep the probe body far away from the high-voltage pulse
circuit to reduce interference to the probe.
CAUTION
When the voltage under test exceeds the probe range, the overrange
indicator lights on. If ON is selected for AUDIBLE OVERRANGE, it will
sound an alarm. At this time, please turn off the device under test
immediately.
After the test is completed, disconnect power from the circuit under test first,
and then turn off the power of the probe. Disconnect two input terminals of the
probe from the test point, and disconnect the output BNC connector from the
measuring instrument.
When the extender leads are used, the connection steps are as follows:
1. Connect one end of the double-ended BNC coaxial cable to the BNC
terminal of the high-voltage differential probe, and connect the other end
to the input terminal of the oscilloscope.
2. Connect the output cable and input cable to the probe.
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Precautions During Measurement
CAUTION
1. Before measurement, try to twist the high-voltage differential input cables as
much as possible, which can better reduce the interference of the lead
inductance and external noise to improve the anti-interference ability of the
probe. The twisting method is shown in the figure below:
Figure 2 Twisting the High-Voltage Differential Input Cable
2. Try not to extend the input cable, as this will bring more noises. If you have
to extend the cable, extend the cable with the same length. Besides, the
input frequency should not be greater than 5 MHz. Otherwise, errors will
occur for the output, as shown in the figure below.
Figure 3 Waveforms Generated without Extending the Input Cable
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Figure 4 Waveforms Generated with the Input Cable Being Extended
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Failures and Troubleshooting
Failures
Description
Troubleshooting
1. Check whether the power adapter plug
and the power socket are properly
The indicators on the
1.
panel blink or do not
light.
The measured
waveforms cannot be
2.
stably displayed or
obvious errors occur.
connected.
2. Check whether the power adapter output
and the probe power interface are properly
connected.
3. Check whether the power adapter is
working properly.
1. Check whether the probe input and the
probe clip are properly connected; whether
the probe clip is properly connected to the
test point.
2. Check whether the probe output is
properly connected with the oscilloscope.
3. Replace the probe or the measuring
instrument to locate the problem.
PHA User Guide 11
Specifications
Technical Specifications
Characteristics PHA0150 PHA1150
Bandwidth (-3 dB) 70 MHz 100 MHz
Rise Time ≤5 ns ≤3.5 ns
Accuracy ±2%
Range (Attenuation) 50X/500X
Maximum Measurable Differential
Voltage (DC + peak AC)
Common Mode Voltage
(DC + peak AC)
Maximum Input Voltage-to-Earth
(Vrms)
Input
Impedance
Input
Capacitance
CMRR DC >80 dB
Input Referred Noise (Vrms) 50X: <50 mV
Overrange Voltage Threshold 50X: 153V±3V
Between each input
and ground
Between differential
inputs
Between each input
and ground
Between differential
inputs
100 kHz >60 dB
1 MHz >50 dB
3.2 MHz >30 dB
50 MHz >26 dB
50X: ±150 V
500X: ±1500 V
±1500 V
600 V CAT Ⅲ
1000 V CAT Ⅱ
5MΩ±1%
10MΩ±1%
<4pF
<2pF
500X: <300 mV
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Indicator 500X: 1530V±30V
Delay 21 ns 16 ns
Bandwidth Limit (5 MHz) ≥-3 dB@5 MHz
Overrange Indicator (Red)
Audible Overrange Alarm Yes (ON/Off is available)
Auto Save
Output Impedance 50 Ω
Safety Standards EN61010-1:2010
EMC Standards EN61326-1:2013; EN61000-3-3:2013
Yes
Yes
EN61000-3-2:2006+A1:2009+A2:2009
Mechanical Characteristics
Probe Dimensions 176 mm x 65 mm x 25 mm
Probe Body Weight 216 g
Insulated Plunger Hook Clip 152 mm x 50 mm x 13 mm
Alligator Clip 106 mm x 43 mm x 16 mm
High-Voltage Differential
Input Cable Length
Probe Output Cable Length 1 m
28 cm
Working Environment
Environment
Characteristics
Operating Temperature
Storage Temperature
Operating Humidity ≤85%RH
Storage Humidity ≤90%RH
Operating Altitude 3,000 m
Storage Altitude 12,000 m
PHA User Guide 13
Description
0℃ to 50℃
-30℃ to +70℃
RIGOL
Warranty
RIGOL TECHNOLOGIES CO., LTD. (hereinafter referred to as
RIGOL) warrants that the product will be free from defects in
materials and workmanship within the warranty period. If a product
proves defective within the warranty period, RIGOL guarantees
free replacement or repair for the defective product.
To get repair service, please contact with your nearest RIGOL sales
or service office.
There is no other warranty, expressed or implied, except such as is
expressly set forth herein or other applicable warranty card. There is
no implied warranty of merchantability or fitness for a particular
purpose. Under no circumstances shall RIGOL be liable for any
consequential, indirect, ensuing, or special damages for any breach
of warranty in any case.
14 PHA User Guide
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Appendix
Appendix 1 Max. Differential Mode Voltage vs Freq.
Figure 5 PHA0150/PHA1150 Max. Differential Mode Voltage vs Freq.
Appendix 2 Package List
This section lists the standard accessories of the PHA series probe.
Table 1 Standard Accessories of the PHA Series Probe
Name Specification Qty.
Probe Body PHA0150/PHA1150 1
Alligator Clip CAT II 1000 V
CAT III 600 V
Insulated Plunger Hook Clip - 1 Pair (red/black)
USB Type-C Cable 1 m 1
User Guide - 1
Warranty Card - 1
PHA User Guide 15
1 Pair (red/black)
RIGOL
Accessories
Alligator Clip Insulated Plunger Hook Clip USB Type-C Cable
16 PHA User Guide
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