Rohde & Schwarz HMC8015 User Manual
¸HMC8015
Power Analyzer
User Manual
*5800532402*
5800532402
User Manual
Version 01
Test & Measurement
General Information Regarding the CE Marking
General Information Regarding the CE Marking
General Information Regarding the CE Marking
All ROHDE & SCHWARZ measuring instruments comply
with the regulations of the EMC directive. The ROHDE &
SCHWARZ conformity evaluation is based on applicable
professional and product standards. In cases where
multiple limit values can be used, ROHDE & SCHWARZ
will apply the stricter standard of the two. With regard to
interference emission, the limit values for businesses and
commercial operations including the small business sector
are applied (Class 1B). For the susceptibility to interference
emissions, the applicable limit values for the industrial sector are used. The signal and data cables that must be connected to the device during operation will necessarily affect
the compliance with the acceptance limits to some extent.
However, the cables used for this purpose will vary, depending on the application. For operation of the device, the following information and conditions should therefore be observed
with regard to interference emission and susceptibility:
1. Data Cables
All connections between measuring instruments or their
interfaces and external devices (printers, computers, etc.)
must always be implemented with adequately shielded
cables. Unless the user manual species a shorter maximum
cable length, the data cable (input/output, signal/control) may
not exceed a total length of 3 m, and may not be located
outdoors. If the device interface allows the connection of
more than one cable, only one may be connected at a time.
Data cables in general should always be double-shielded
cable. For the IEEE bus cable, the double-shielded cable
HZ72 is recommended and can be ordered from ROHDE &
SCHWARZ.
2. Signal Cables
Signal cables used for signal transmission between the
measurement point and the measuring device should generally be kept as short as possible. Unless a shorter maximum
cable length is specied, the signal cables (input/output,
signal/control) may not exceed a total length of 1 m, and may
not be located outdoors. All signal cables must be shielded
(RG58/U coaxial cable). Care must be taken to achieve a
proper ground connection. For signal generators, doubleshielded coaxial cables (RG223/U, RG214/U) must always be
used.
General Information
3. Impact on the Equipment
In the presence of strong high-frequency electric or
magnetic elds, unwanted signal components may enter
the equipment, despite careful setup of the connected
cables and lines. With ROHDE & SCHWARZ measuring
instruments, this will neither be destructive nor lead to the
shutdown of the equipment. As a result of such external
conditions, the displayed values and readings may show
minor deviations with respect to the applicable instrument
specications in individual cases.
Regarding the
CE Marking
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Content
General Information Regarding the CE Marking .... 2
1 Important Information ...................4
1.1 Symbols ...................................4
1.2 Unpacking ..................................4
1.3 Instrument Setup ............................4
1.4 Safet y .....................................4
1.5 Intended Use ...............................4
1.6 Ambient Conditions ..........................5
1.7 Warranty and Repair ..........................5
1.8 Maintenance ................................5
1.9 CAT II ......................................6
1.10 Supply Voltage ..............................6
1.11 Limit Values .................................6
1.12 Batteries and Accumulators/Cells ...............6
1.13 Product Disposal .............................7
2 Instrument Controls and Indicators .........8
3 Options/Upgrade Vouchers ............... 9
4 Connecting a Device under Test .......... 10
4.1 Connecting a Device under Test via Adapter ......10
4.2 Connecting a Device under Test Directly .........11
4.3 Sensor Menu ...............................12
5 Setting Parameters ..................... 13
5.1 Using the Instrument for the First Time ..........13
5.2 Screen Display Description ...................13
5.3 Multifunction Softkeys .......................14
5.4 Conguring the Operating Mode from a List of
Measuring Parameter Options (“Cells”) ..........14
5.5 Readout Display ............................14
5.6 Selecting the Measuring Range ................15
6 Instrument Functions ................... 16
6.1 Measurement Parameters ....................16
6.2 Display Modes (VIEW Menu) ..................16
6.3 Crest Factor ................................19
6.4 Energy Counter (Integrator Values) .............19
6.5 Invert Function .............................20
6.6 Acquisition Mode ...........................20
6.7 Peak Hold .................................21
6.8 Limits .....................................21
6.9 Analog / Digital Inputs and Outputs .............21
7 Data Logging .........................23
8 Documenting, Saving and Retrieving ....... 25
8.1 Device Settings .............................25
9 General Settings ....................... 26
9.1 Updates (Instrument Firmware) ................26
9.2 Interface Setup .............................26
9.3 General Settings (Misc). ......................26
10 Remot Operation ......................28
10.1 USB VCP ..................................28
10.2 USB TMC .................................28
10.3 Ethernet ...................................30
10.4 IEEE 488.2 / GPIB ...........................32
11 Technical Data ........................33
12 Appendix ............................34
12.1 List of gures ..............................34
12. 2 Glos sar y ..................................34
Content
Content
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Important Information
Important Information
1 Important
Information
1.1 Symbols
must follow the instructions and warnings contained in
this manual carefully. The enclosure, chassis and all
measuring terminals are connected to protective ground
lead. The device complies with protection class II.
Disabling or separating the intended safety ground
connection, either inside or outside the device, is not
permitted!
(1) (2) (3) (4)
(5) (6) (7)
Symbol 1: CAUTION: General hazard –
Observe product documentation
Symbol 2: Danger of electric shock
Symbol 3: Earth (ground)
Symbol 4: Protective conductor terminal
Symbol 5: ON (supply voltage)
Symbol 6: OFF (supply voltage)
Symbol 7: Ground terminal
1.2 Un packing
When unpacking, check the package contents for completeness (measuring instrument, power cord, product CD,
any optional accessories). After you have nished unpacking, check the equipment for any visible shipping-related
damage or other mechanical problems. For any damage
occured during transport and shipping, contact the carrier
and supplier immediately. Do not use the equipment if it is
damaged.
1.3 Instrument Setup
As shown in the picture below, the instrument may be
set up at a slight angle by using small extension legs that
unfold from its feet. Ensure that the extension legs are
completely unfolded to ensure secure footing.
Fig. 1.1: Operating positions.
Position the instrument so the power switch is not obstructed at any time.
1.4 Safety
This instrument is designed in accordance with EN
61010-1 (VDE 0411 Part 1), Safety Requirements for
Electrical Equipment for Measurement, Control and
Laboratory Use, and left the factory in perfect condition. It
thus also meets the requirements of European Standard
EN 61010-1 and the international standard IEC 61010-1. To
maintain this condition and ensure safe operation, the user
All exposed metal parts have been tested against the AC
power leads with a test voltage of 2200 VDC. The instru-
ment complies with overvoltage category CAT II (600V). To
ensure safe operation, the instrument may only be operated from a properly grounded power outlet. Plug in the
power cord before connecting any signal circuits. Never
use the product if the power cable is damaged. Check the
power cable on a regular basis to ensure that it is in proper
operating condition. Take appropriate safety measures and
carefully lay the power cable to ensure that the cable will
not be damaged and that no one can be hurt by, for example, tripping over the cable or suffering an electric shock.
Any time there is reason to believe that safe operation is
no longer possible, the instrument must be taken out of
service and secured against inadvertent use.
Safe operation is not possible:
❙ If the instrument shows visible damage
❙ If the instrument is no longer working
❙ Following long-term storage under unfavorable conditions
(e.g. outdoors or in damp rooms)
❙ After severe transport stress (e.g. in packaging that does
not meet the minimum conditions for shipping by post,
rail or truck)
Prior to switching on the product, always ensure that the
nominal voltage set on the product matches the nominal
voltage of the mains supply. If a different voltage is to be
set, the mains fuse of the product may have to be changed
accordingly.
1.5 Intended Use
This instrument is only intended to be used by persons
who are familiar with the risks associated with measuring
electrical quantities. The instrument may only be operated with a properly grounded power outlet. Never use a
“cheater plug” or other means to defeat or disconnect the
protective ground lead. The power plug must be connected before any signal circuits are connected. The product may be operated only under the operating conditions
and in the positions specied by the manufacturer, without
the product's ventilation being obstructed. If the manufac-
turer's specications are not observed, this can result in
electric shock, re and/or serious personal injury or death.
Applicable local or national safety regulations and rules for
the prevention of accidents must be observed in all work
performed.
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Important Information
Important Information
The instrument is intended for use in the following areas:
❙ Industrial
❙ Residential
❙ Business and commercial
❙ Small business
The measuring device is to be used only with authentic ROHDE &
SCHWARZ test accessories, signal cables and power cords. Never
use power cords with insufcient ratings. Before starting each
measurement, the signal cables should be checked for damage and
replaced if necessary. Damaged or worn components may damage
the equipment or cause injury.
The instrument may only be used indoors. Before each
measurement, check the instrument for proper operation
using a known signal source or sample.
To disconnect from the power supply, the rear uncooled IEC plug
must be removed.
1.6 Ambient Conditions
The permissible operating temperature is +5 °C to +40 °C
(connector contamination level 2). The maximum permissible relative humidity (non-condensing) is 80 %. During
storage or transport, the permissible temperature range
is –25 °C to +60 °C. If condensation has formed during
transport or storage, the equipment should be allowed to
acclimatize to ambient levels for about two hours before
use. The instrument is intended for use in clean, dry areas.
It may not be operated in dusty or damp conditions, an
explosion hazard area, or in the vicinity of aggressive
chemicals. The instrument can be positioned as needed,
but sufcient air circulation must always be ensured. For
prolonged operation, a horizontal or slightly angled operating position (extension legs) is preferable.
When installing one or more R&S®HMC8015 units in a 19inch rack, make sure that there is enough space around
its periphery to ensure sufcient cooling (see gure).
Recommended minimum clearance: 1 height unit (HU)
The instrument may be operated at an altitude of up to
2000 m. The specications and tolerances apply after
a warm-up time of at least 60 minutes, at an ambient
temperature of 23 °C (± 2 °C). All values stated without
tolerances are typical values for an average unit.
The ventilation openings must not be
covered!
1.7 Warranty and Repair
ROHDE & SCHWARZ equipment is subject to strict quality
control. Before leaving the production line, each device
is subjected to a 10-hour “burn-in test”. This is followed
by an extensive functional test and quality inspection, in
which all operating modes and compliance with speci-
cations are checked. These tests are carried out using
equipment that is calibrated traceable to national standards. The statutory warranty provisions of the country in
which the ROHDE & SCHWARZ product was purchased
are applicable. In the event of any complaints, please
contact the dealer from whom you purchased the ROHDE
& SCHWARZ product.
All adjustments, parts replacements, maintenance and
repairs must be carried out by authorized ROHDE &
SCHWARZ specialists. Only original parts may be used
for replacing safety-relevant parts (e.g. mains switches,
mains transformers, fuses). After each replacement of
safety-relevant parts, a safety check (visual inspection, PG
conductor test, insulation resistance test, leakage current
measurement, functional testing) must be performed. This
helps ensure the continued safety of the product.
The product may only be opened by authorized,
specially trained personnel. Before any work is
performed on the product or before the product is
opened, it must be disconnected from the supply
voltage. Otherwise, personnel will be exposed to the
risk of an electric shock.
1.8 Maintenance
The outside of the instrument should be cleaned regularly with a
soft, lint-free dust cloth.
The display may only be cleaned with water or a suitable glass cleaner (not with alcohol or solvents), followed
by wiping with a clean, dry, lint-free cloth. Never allow
cleaning liquid to enter into the equipment. Other cleaning
products may dissolve the labels or mar the plastic surface
and painted or varnished surfaces.
Before cleaning the instrument, make sure that it is turned off
and disconnected from any power supply (e.g. AC power grid or
battery).
No part of the equipment should be cleaned with chemical solvents such as alcohol, acetone or paint thinners!
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Important Information
Important Information
1.9 CAT II
This instrument is intended for measurements on circuits that are or are not connected directly to the normal
(low-voltage) AC power grid. The device complies with
measurement category CAT II; the input voltage must not
exceed 600 V
in a CAT II application.
RMS
The following information relates exclusively to user
safety. Other aspects, e.g. the maximum permissible
input voltage, are specied in the technical data sheets
and must also be observed. Indirect measurements on
the power grid may be performed by means of appropriate transducers (e.g. current probes) that meet or exceed
the requirements of the protection class applicable to the
measurement task. When measuring, the transducer’s
measurement category – as specied by the manufacturer
– must be observed.
Measurement categories
The measurement categories relate to transients superimposed on the AC line voltage. Transients are short, very
fast (steep) voltage and current changes that may occur
either periodically or non-periodically. The amplitude of
possible transients increases as the distance to the source
of the low-voltage network decreases.
Fig. 1.2: Rear panel with supply voltage selector and connections.
The measuring circuit is equipped with a current overow
fuse against excess current that cannot be serviced or
replaced by the user.
1.11 Limit Values
The R&S HMC8015 is equipped with an overload protection circuit. The overload protection circuit is used to
prevent damage to the unit, and to protect against possible
electrical shock. The limit values of the unit must not be
exceeded. The front panel of the R&S HMC8015 species
the protection limit values in order to ensure safe operation of the unit. These protection limits must be strictly
observed:
❙ Measurement category IV: Measurements at the
source of the low-voltage network (e.g. on electricity
meters).
❙ Measurement category III: Measurements in a building
network (e.g. distribution panels, circuit breakers,
permanently installed electrical outlets, stationary
motors, etc.).
❙ Measurement category II: Measurements on circuits
directly connected to the low-voltage power grid (e.g.
household appliances, power tools, etc.)
❙ 0 (Devices with no measurement category rating): Other
circuits that are not directly connected to the power grid.
1.10 Supply Voltage
Before turning on this device, please check that the available supply voltage (115 V or 230 V ±10 %, 50 Hz to 60 Hz)
matches the specications on the supply voltage selector
switch of the device. If this is not the case, the supply volt-
age must be adjusted using the switch. The mains voltage
selector switch is located on the rear panel of the unit.
The unit has a main power fuse, which is located on
the rear panel of the unit for uncooled IEC connectors.
Depending on the supply voltage setting, a fuse of the correct type must be installed.
❙ At the 115 V setting: F630L250V
❙ At the 230 V setting: F400L250V
If the equipment must be left unattended for a long period of
time, it must be switched off at the power switch for safety
reasons.
Fig. 1.3: Connections on the front panel.
Voltage input: 600 V
RMS
Current input: 20 A
Max. voltage
between COM and IN: 5 V
Peak
Connection to power supply:
115 V / 230 V, selectable with the voltage selector on
the rear panel of the unit
Frequency: 50 -60 Hz
Power consumption: 35 W maximum, 15 W typical
1.12 Batteries and Accumulators/Cells
If the information regarding batteries and accumulators/cells
is ignored or not sufciently observed, this may lead to explosion, re and serious personal injury or death. The handling of
batteries and accumulators based on alkaline electrolytes must
conform to EN 62133.
1. Cells must not be taken apart, opened or crushed.
2. Cells or batteries must not be exposed to heat or re.
Storage in direct sunlight must be avoided. Keep cells
and batteries clean and dry. Clean soiled connectors
using a dry, clean cloth.
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6
3. Cells or batteries must not be short-circuited. Cells or
batteries must not be stored loose in a box or drawer
where they can short-circuit each other, or where they
can be short-circuited by other conductive materials.
Cells and batteries must not be removed from their
original packaging until they are ready to be used.
4. Keep cells and batteries out of the reach of children. If
a cell or battery has been swallowed, seek immediate
medical care.
5. Cells and batteries must not be subjected to any mechanical impacts that are stronger than permitted.
6. If a cell develops a leak, the uid must not come into
contact with the skin or eyes. If contact occurs, wash
the affected area with plenty of water and seek medical
aid.
7. Cells or batteries that are not properly replaced or
charged pose a risk of explosion. To ensure that the
product remains safe to use, always replace cells or
batteries with the matching type.
Important Information
Important Information
8. Cells and batteries must be recycled and kept separate from regular household waste. Accumulators or
batteries that contain either lead, mercury or cadmium
are hazardous waste. Observe the national regulations
regarding waste disposal and recycling.
1.13 Product Disposal
Fig. 1.4: Product labeling in accordance
with EN 50419.
The German Electrical and Electronic Equipment Act (ElektroG) implements the following EC directives:
❙ 2002/96/EC (WEEE) for electrical and electronic
equipment waste and
❙ 2002/95/EC on the Restriction of Use of Hazardous
Substances in electrical and electronic equipment (RoHS
directive)
At the end of the lifecycle of this product, it may not be
disposed of with normal household waste. Moreover,
disposal via the municipal collection points for electrical
equipment waste is also not permissible. Rohde & Schwarz
GmbH & Co. KG fully assumes the manufacturer’s obligations to take back and dispose as set forth by the ElektroG,
to ensure environmentally sound disposal or recycling of
the materials used.
Please contact your local service representative in order to
dispose of the product.
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Instrument Controls and Indicators
Instrument Controls and Indicators
2 Instrument Con-
trols and Indicators
¸HMC8015 front panel
1
Display – 3.5" TFT color display with QVGA resolution
(320 pixels x 240 pixels)
2
Interactive softkeys – Direct access to all relevant func-
tions
3
Function Keys – Operates as a numeric keypad using
SHIFT function
U – Increases voltage range manually
I – Increases current range manually
VIEW – Switches between graphical and numeric dis-
play
U – Decreases voltage range manually
I – Decreases current range manually
ACQ – Data acquisition menu for recording data
START / STOP – Starts/stops the energy counter
RESET – Resets peak values / energy counter
MEAS – Logging function / energy counter / limit val-
ues
HOLD – Stops the update of measurement values
NULL – Sets the current display values as zero refer-
ence values
EXT – Sensor menu and additional functions
4
SAVE/RECALL – Saves and recalls/uploads device set-
tings
5
SETUP – Gives access to general device settings
6
HELP – Integrated help screen
7
SHIFT – Activates the numeric keypad
8
Universal rotary control knob with arrow keys – Sets
the parameters cells (editing keys)
V jack – Input for voltage measurement
9
COM jack – Shared measuring input for voltage and
10
current measurement
A jack – Input for current measurement
11
IN/COM jacks – Sensor input for external shunts or cur-
12
rent probes
USB port – USB host port for USB ash drives when
13
saving parameters
POWER – ON/OFF for standby mode
14
¸HMC8015 rear panel
15
Fig. 2.2: ¸HMC8015 rear panel.
15
Digital / Analog IN/OUT – Digital / analog inputs and
19181716
20 21 2422
23
outputs for Pass/Fail sorting and limit values
16
IEEE-488 (GPIB) interface (optional) – Installation avail-
able at factory only
17
Ethernet (LAN) interface
18
USB interface
19
Ground terminal
20
Uncooled IEC plug
21
Fuse
22
Power switch
Supply voltage selector switch (115V or 230V)
23
24
Kensington lock
1
14
Fig. 2.1: ¸HMC8015 front panel.
8
8
13
2
3
12
4
5 6 7
11
8
10
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3 Options/Upgrade
Vouchers
The R&S®HMC8015 has available options that increase the
application scope of the instrument. Options and upgrade
vouchers can be combined. The following options (or upgrade vouchers) are available for the R&S®HMC8015 power
analyzer:
Options/Upgrade Vouchers
Options/Upgrade Vouchers
Description ¸HMC8 015
Advanced Analysis ¸HOC151 ¸HVC151
Advanced IO ¸HOC152 ¸HVC152
Table 3.1: Overview of ¸HMC8015 options/upgrade vouchers
options
1)
¸HMC8 015
upgrade vouchers
Fig. 3.1: Upgrade menu.
2)
The R&S®HOC151 Advanced Analysis option or
R&S®HOC152 Advanced IO function can both be purchased from the factory with an R&S®HMC8015. In contrast, the R&S®HV151 Advanced Analysis upgrade voucher
1) Only when ordered in combination with a ¸HMC8015 base unit
2) Subsequent activation of ¸HMC8015 options via upgrade voucher
Function Description
P Active power (W) ●
S Apparent power (VA) ●
Q Reactive power (var) ●
PF Power factor lambda (λ) ●
PHI Phase shift (φ) ●
FU Frequency value for the voltage (Hz) ●
FI Frequency value for the current (Hz) ●
FPLL
URMS True root mean square (RMS) voltage (U
UAVG Average voltage ●
IRMS True root mean square (RMS) current (I
IAVG Average current ●
UTHD Total harmonic distortion U ●
ITHD Total harmonic distortion I ●
WHM, WHP, WH, AHM, AHP, AH Energy counter (integrator values) ●
Logging Data recording (comma-separated values CSV) ●
USB, Ethernet
(GPIB optional – HMC8015- G)
UPPeak Maximum voltage (U
UMPeak Minimum voltage (U
IPPeak Maximum current (I
IMPeak Minimum current (I
PPPeak Maximum power (P
PMPeak Minimum power (P
HARMONICS mode Bar graph of 50 harmonics ●
WAVEFORM mode
TRENDCHART mode Current or voltage displayed as signal prole ●
INRUSH mode Triggered display of a signal prole (single shot) ●
Sensor input Input jack for current probe / external shunt ●
DIN / AIN
Limit value / PASS-FAIL Displays limit values ●
Table 3.2: Feature overview: options/upgrade vouchers
Frequency and phase locked loop recording frequency (Hz)
Remote interfaces ●
) ●
+pk
) ●
–pk
) ●
+pk
) ●
–pk
) ●
+pk
) ●
–pk
Displays the waveform (for one cycle of voltage, current or power data)
Digital / analog inputs and outputs (Bayonet Neill –
Concelman BNC)
or R&S®HV152 Advanced IO upgrade voucher enable a
subsequent upgrade via a license key. The installed options or upgrade vouchers can be looked up under “Device
R&S®HMC8015
) ●
RMS
) ●
RMS
base unit
●
¸HOC151
¸HVC151
●
¸HOC152
¸HVC152
●
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Options/Upgrade Vouchers
Options/Upgrade Vouchers
Information” in the SETUP menu. Table 3.2 shows an overview of the most important optional features. For com-
plete specications, please visit the ROHDE & SCHWARZ
homepage.
To generate a license key, go to http://voucherrs.hameg.
com and enter the voucher code. The license key (SERI-
ALNUMBER.hlk) is an ASCII le and can be opened using
a le editor. The key is listed in the le in plain text. Enable
the option in the instrument by either reading the key in
automatically or entering it manually. The fastest and easiest method is to read the key in automatically from a USB
ash drive. To do this, save the license le to a USB ash
drive and then insert the ash drive into the USB port on
the instrument front panel. Press the SETUP button and
then softkey LICENSE to open the menu for reading in
options and upgrade vouchers. Press softkey READ KEYS
FROM FILE to open the File Manager. Use the rotary con-
trol knob to select the license le, then press softkey LOAD
to load the key. The license key is loaded and the option is
available after the instrument has been restarted.
Alternatively, the license key can be entered manually. To
do this, press softkey INPUT KEY MANUALLY. This opens
an input window where the license key can be typed in
manually. Once the key has been entered, conrm by
pressing softkey ACCEPT. Restart the instrument to enable
the option.
4 Connecting a
Device under Test
4.1 Connecting a Device under Test via Adapter
Fig. 4.1: Connecting HZC815 DE version to ¸HMC8015.
A device under test (DUT) can easily and securely be
connected to the ¸HMC8015 using the optional
HZC815 socket adapter. In this case, the cables enclosed
with the HZC815 (length = 25 cm) are connected to the
¸HMC8015 socket on the front panel. The connection
of the socket adapter to the ¸HMC8015 front panel is
determined by the color of the HZC815 accessory cables.
The cables on the socket adapter represent an extension
of contacts for a standard AC outlet with grounded safety
sockets and are used for measuring a DUT. Power is supplied to the HZC815 socket adapter through the uncooled
IEC plug on the top of the adapter and a power cord.
Fig. 3.2: Manually entering the license key.
There are 3 different types of HZC815 available ex factory:
❙ HZC815-DE: DE version; EU socket adapter (230V)
❙ HZC815-UK: UK version; UK socket adapter (230V)
❙ HZC815-US: US version; US socket adapter (115V)
Fig. 4.2: HZC815 DE, UK and US version plug adapters.
The HZC815 standard AC grounded safety outlet system is
only approved for a 10 A continuous load. A load of 20 A would
destroy the adapter.
10
10
On the sides of the HZC815 adapter, special faceplates
hide mounting screws. The socket adapter can be permanently mounted with these mounting screws if so desired.
4.2.1 Internal Jack Wiring
Options/Upgrade Vouchers
Options/Upgrade Vouchers
Fig. 4.3: HZC815 DE version plug adapter with mounting screws.
4.2 Connecting a Device under Test Directly
The ¸HMC8015 can measure voltages up to 600 V
and currents up to 20 A
. In these cases, a device under
RMS
RMS
test (DUT) can be directly connected to the power analyzer
using the 4 mm safety jacks on the front panel.
Before the start of each measurement, the signal cables to be used
must be checked for damage and wear.
Voltages are measured using the red V jack; currents are
measured using the blue A jack. The black COM jack acts
here as the shared measuring input for voltage and current
measurement.
If the maximum values for current and voltage are exceeded, the ¸HMC8015 power analyzer is automatically switched off.
If the safety warning “Overcurrent Protection” appears
on the screen, then more than 2 A were supplied in the
low current range. The unit switches itself off in order
to protect the internal shunt. In this case, switch to the
automatic range selection (AUTO) or a higher range (>
500 mA) manually.
Fig. 4.4: Internal wiring of A, V and COM jacks.
The 4 mm A, V and COM safety jacks on the front panel
are not electrically isolated and separate from each other,
and therefore offer several methods for measuring a DUT:
❙ Voltage-based measurement
❙ Current-based measurement
❙ Measurements via external shunt / current probe
4.2.2 Voltage-Based Measurement
Fig. 4.5: Voltage-based measurement.
Voltage-based measurement is typically used with high
currents, since the voltage drop at the shunt increases as
the current increases. The voltage U is correctly measured
at the load.
Fig. 4.6: Voltage-based measurement, wiring example.
4.2.3 Current-Based Measurement
Current-based measurement is preferred with low currents
and high voltages, because it prevents current owing
through the voltage measuring jack from going through
the shunt, which would falsify the reading. With this measurement type, the current reading must be inverted (IN-
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Options/Upgrade Vouchers
Options/Upgrade Vouchers
Fig. 4.7: Current-based measurement.
VERT) using the ACQ menu and softkey menu CURRENT.
In addition, the I and COM cables need to be reversed (see
Fig. 4.8).
4.3 Sensor Menu
The Sensor conguration menu is opened via the EXT
menu and the softkey menu SENSOR. Press softkey
ACTIVATE to activate (ON) or deactivate (OFF) the sensor
measurement. When the sensor measurement is activated
(ON), the automatic current measurement (AUTO) is deactivated (if it was activated previously).
Fig. 4.10: Sensor menu.
Fig. 4.8: Current-based measurement, wiring example.
4.2.4 Measurements with an External Shunt or
Clamp-on Current Probe
The 4 mm safety jacks IN and COM are used for making
measurements with an external shunt or clamp-on current
probe. Safety plugs connect the shunt or clamp-on probe
directly to the jacks. Accessories such as HZC50 or HZC51
can be used for the clamp-on probe.
The softkey ACTIVATE activates the sensor inputs IN and COM
on the instrument front panel (hardware switch).
Use the softkey RANGE and the rotary control knob to
select the maximum measuring range for the measured
voltage. The available settings are 100mV, 1V and 4V. As
a rule, the 100mV range is appropriate for measurements
on shunts, while 1V and 4V are used for measurements
with a current probe. This setting is referenced to the peak
value.
Example for shunt:
Set RESISTANCE to 1Ω.
Set RANGE to 4V.
Convert as follows:
1V = 1A 4V divided by CF3 = 1.33A.
Use the cell conguration to display this power range as
IRANGE on the screen.
Fig. 4.9: HZC51 Clamp-on current probe.
The connection of a clamp-on probe through a BNC adapter
is not allowed, since depending on the polarity of the volt-
age, the measuring voltage may be present across the BNC
plug coupling.
12
12
Fig. 4.11: Example of a sensor.
Use softkey MODE and the rotary control knob to select
the sensor mode. The available modes are SHUNT (to
connect an external shunt) and CLAMP (to connect a
current probe, e.g. HZC50 / HZC51). The Sensor menu
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