Dranetz-BMI PowerLogger 10 User manual

PowerLogger 10
Power Quality Instrument
P/N M229H
© 2007 Rev. A
User’s Guide

2 PowerLogger 10 User’s Guide
1LCDDisplay
2MENU/ON|OFFON / OFF key
Operating Mode Menu:Entry acknowledgment
3 DATA|CLEAR Function key for measurement value
store, delete and MIN-MAX
Operating Mode Menu: Individual menu item selection
reverse flux direction,
increase values
4 MAN|AUTO Manual measuring range selection key
Operating Mode Menu: Individual menu item selection
forward flux direction,
reduce values
5ESC|FUNC Multifunction key
Operating Mode Menu: Exit menu level and
return to next highest level,
exit parameter entry mode
without storage of values
6Rotary switch for measurement functions
7 Connection jacks
8 Power pack connection jack
max. 600 V !
1
2
3
4
5
6
7
7
8
→ chapter 2
→ chapter 5
→ chapter 3
→ chapter 2
→ chapter 3
→ chapter 4
→ chapter 3
→chapter 8ff

PowerLogger 10 User’s Guide 3
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Digital Display Symbols
1 Main display with decimal point and indication of polarity
2 Sub-displays with decimal point and indication of polarity
3 Unit of measure
4 Selected current type
5 Continuous operation, symbol blinks for data transmission
6 Low battery
7 Acoustic signal on, buzzer activated for corresponding function
8 Zero balancing
9 Reference value
10 Memory display, “hold measurement value”
11 Stopwatch activated or elapsed time since start of mea-
surement
12 Together with symbol 11:
elapsed time since activation of corresponding function,
counter, number of events when trigger threshold is
exceeded
13 MIN-MAX storage
14 Event marking
15 Synchronized storage
16 Memory mode
17 Manual measuring range selection
18 Relative value
19 Measurement with clip-on current transformer active:
Factor 1000 or 10000 is considered
1
2
6
4
3
7
5
141517 16
13121098 11
18
19

4 PowerLogger 10 User’s Guide
Contents Page
1 Safety Features and Precautions ..............................6
2 Initial Start-Up ..........................................................8
3 Selection of Measurement Functions and
Measuring Ranges ...................................................10
3.1 Automatic Measuring Range Selection .....................10
3.2 Manual Measuring Range Selection ..........................10
3.3 Quick Measurements .................................................11
4 Triple Digital Display ..............................................11
5 Measurement Value Storage
“DATA” (Hold & Compare) ..................................12
6 Minimum and Maximum Value Storage
“MIN-MAX” with Time Stamp ..............................14
7 Auto Select ...............................................................16
8 Voltage Measurement .............................................17
8.1 Transient Overvoltages ..............................................18
8.2 Voltage Measurements for Greater than 600 V .........18
8.3 Alternating Voltage Level Measurement (dB) ..........19
9 Current Measurement ............................................21
9.1
Measurement with (Clip-On) Current Transformers .....22
9.1.1
Transformer Output mA or A for AC Measurements ...22
9.1.2
Transformer Output V for AC and DC Measurements .23
10 Resistance Measurement ........................................24
11
Continuity Testing for Resistance Measurement ......25
12 Diode Testing ...........................................................26
13 Continuity Testing for Diode Tests ........................27
14 Capacitance Measurement .....................................28
15 Frequency Measurement ........................................29
16 Temperature Measurement ....................................30
16.1
Temperature Measurement with Pt100 and Pt1000 .......30
16.2 Temperature Measurement with
Thermocouple and Reference Junction......................30
17 Counting Events and Zero Crossings ....................32
17.1 Event Counting ..........................................................32
17.2 Count Zero Crossings ................................................34
18 Stopwatch .................................................................34
19 ΔOperating Mode, Reference Value REF.............36

PowerLogger 10 User’s Guide 5
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Page
20 Power Measurement ............................................... 38
20.1
Power Measurement with Analog Signals I and V ....... 38
20.2 Energy Measurement with Pulses ............................. 40
20.3 EnErGY Menu for Energy Measurement ................. 41
20.4 Exit Power/Energy Measurement ............................. 42
20.5 Power Measurement with
(Clip-On) Current Transformers................................ 42
21 Line Fault Recording .............................................. 43
21.1 Line Fault Recording without Memory Mode .......... 43
21.2 Trigger Parameters for Line Fault Recording ........... 46
21.3 Line Fault Recording with Memory Mode ............... 47
22 Storing Measurement Values ................................. 47
22.1 General Parameters ................................................... 50
22.2 Trigger Functions ...................................................... 51
22.2.1 Trigger Function Parameters .................................... 52
23 Setting the Measurement Parameters ................... 56
23.1
Description of General Parameters in the SEt Menu .... 58
23.1.1 Sampling Rate: rAtE ................................................. 58
23.1.2 Rapid Query: MenuCYCLE . ..................................... 58
23.1.3 tiME und Datum dAtE .............................................. 58
23.2 Parameter Description of Menu Item: inFo .............. 59
23.3 Default Settings ........................................................ 59
23.4 List of All Parameters .............................................. 60
24 Data Transmission via the RS 232 Interface ........ 61
24.1 Activating the Interface ............................................ 61
24.2 Selecting Interface Parameters ................................. 62
25 Characteristic Values ............................................. 64
26 Maintenance ............................................................ 74
26.1 Battery ....................................................................... 74
26.2 Power Pack ............................................................... 75
26.3 Fuses ......................................................................... 75
26.4 Housing ..................................................................... 76
27 Instrument Messages ............................................. 76
28 Accessories ............................................................... 77
28.1 General ...................................................................... 77
28.2 Characteristic Values of Measuring Cables
(Scope of Supply of Safety Cable Set KS17-2)......... 77
29 Repair and Replacement Parts Service
DKD Calibration Lab
and Rental Instrument Service .............................. 77
30 Warranty ................................................................. 78
31 Product Support ...................................................... 79

6 PowerLogger 10 User’s Guide
1 Safety Features and Precautions
You have selected an instrument which provides you with a
high level of safety.
This instrument fulfills the requirements of the applicable
European and national EC guidelines. We confirm this with the
CE marking. The relevant declaration of conformity can be
obtained from Dranetz-BMI.
The precision digital instrument is manufactured and tested in
accordance with safety regulations IEC 61010–1:2001/
DIN EN 61010–1:2001/ VDE 0411–1:2002. When used for its
intended purpose, safety of the operator, as well as that of the
instrument, is assured. Their safety is however not guaranteed,
if the instrument is used improperly or handled carelessly.
In order to maintain flawless technical safety conditions, and to
assure safe use, it is imperative that you read the operating
instructions thoroughly and carefully before placing your
instrument into service, and that you follow all instructions
contained therein.
For your safety, as well as for the protection of your instru-
ment, the PowerLogger 10 is equipped with an automatic
socket blocking device. This is coupled to the rotary switch,
and only allows connection to the socket required for the
selected function. It also prevents the switching of the rotary
selector to disallowed functions when a measurement cable is
plugged into a socket. Exception: in switch position W/mA or
W/A jack V remains open for power measurement, in position
W/A jack mA is only partially covered or blocked.
Use for Intended Purpose:
– The instrument described herein is a portable instrument
which can be held in one hand during measurements.
– Only such measurements are performed as described in
chapters 8 to 21.
– The measuring instrument including measuring cables and
plug-on test probes is only used within the measuring cate-
gory indicated under the heading "Electrical Safety" on page
72 (refer to the table on page 7 for the meaning of the mea-
suring categories).
– The limits of the overload capacity may not be exceeded.
Refer to the Characteristic Values on page 66 and page 70
for the duration and values of the overload capacity.
– Measurements are only performed within the specified
ambient conditions. Refer to page 73 for the operating tem-
perature range and relative humidity.
– The measuring instrument is only used in accordance with
the specified protection type, see page 73.
Observe the following safety precautions:
• The instrument may only be operated by persons who are
capable of recognizing contact hazards and taking the appro-
priate safety precautions. Contact hazards exist anywhere,
where voltages of greater than 33 V may occur (effective
value).

PowerLogger 10 User’s Guide 7
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• Avoid working alone when taking measurements which
involve contact hazards. Be certain that a second person is
present.
• The maximum allowable voltage between any given con-
nector jack (7) and earth is equal to 600 V, category III
or to 300 V, category IV.
• Be prepared for the occurrence of unexpected voltages at
devices under test (e.g. defective devices). For example,
capacitors can be dangerously charged.
• Make certain that the measurement cables are in flawless
condition, e.g. no damage to insulation, no interruptions in
cables or plugs etc.
• No measurements may be made with this instrument in elec-
trical circuits with corona discharge (high-voltage).
• Special care is required when measurements are made in HF
electrical circuits. Dangerous pulsating voltages may be
present.
• Measurements under moist ambient conditions are not
allowable.
• Be absolutely certain that the measuring ranges are not
overloaded beyond their allowable capacities. Limit values
can be found in the table “Measuring Ranges” in Chapter 25
“Characteristic Values”.
• All current ranges are equipped with fuses (Nominal voltage
of fuse = 1000 V). The maximum allowable voltage for the
measuring current circuit (= rated voltage of the fuse) is
equal to 600 VAC/DC in the “mA” and “A” ranges.
•In switch position AUTO SELECT, Ω, , °C and F, the
instrument may only be used in power installations when
the electrical circuit is protected with a fuse or circuit
breaker up to 20 A, and the nominal voltage of the instal-
lation does not exceed 600 V in order to provide protec-
tion also under single-fault conditions (EN 61010-1).
Measuring Categories and their Meaning per IEC 61010-1
The measurement category and the relevant maximum rated
voltage (e.g. 600 V CAT III) which are shown on the instru-
ment casing apply to your measuring instrument.
CAT Definition
I
Measurements in electrical circuits not directly connected to
the mains system:
e.g. power systems in motor vehicles or aeroplanes,
batteries ...
II Measurements in electrical circuits directly connected to the low-voltage system: via plug, e.g. in households, offices, labo-
ratories ...
III Measurements in facility installations:
stationary consumers, distributor connections, devices
attached to a distributor
IV Measurements at the source of low-voltage installations:
Meters, main terminal, primary overcurrent protection
devices

8 PowerLogger 10 User’s Guide
Meaning of symbols on the instrument
Warning concerning a point of danger
(Attention: observe documentation)
Earth
Continuous, doubled or reinforced
insulation
CATIII/IV Instrument for measurement category III or IV
VDE testing authority approval mark
CSA approval mark
(North American test authority)
Indicates EU conformity
DKD calibration mark (red seal):
Repair, Parts Replacement and Balancing
When the instrument is opened, voltage conducting parts may
be exposed. The instrument must be disconnected from the
measuring circuit for repair, replacement of parts or balancing.
If repair or balancing of a live,open instrument is required, this
may only be carried out by trained personnel who are familiar
with the dangers involved.
Errors and Extraordinary Strains
If it may be assumed that the instrument can no longer be oper-
ated safely, it must be removed from service and secured
against unintentional use.
Safe operation can no longer be relied upon,
• if the instrument demonstrates visible damage,
• if the instrument no longer functions,
• after a long period of storage under unfavorable conditions.
2 Initial Start-Up
Battery
Please refer to chapter 26.1 regarding correct battery installa-
tion.
Attention!
!Before opening the instrument, disconnect it from the
measuring circuit!
!
Serial number
GOSSEN METRAWATT Calibration Laboratory
Date of calibration
German Calibration Service – Calibration Laboratory
B0730
99-02
DKD-K -
19701

PowerLogger 10 User’s Guide 9
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Operation with mains adapter
(accessory equipment, not included as a standard feature)
During power supply via mains adapter NA5/600, the inserted
batteries are cut off electronically so that they rmay remain in
the instrument, see also chapter 26.2. If rechargeable batteries
are used, they must be charched outside the instrument.
Switching the Instrument On Manually
∞Press the ON key.
Activation is acknowledged with a brief acoustic signal. As
long as the key remains pressed, all segments of the liquid
crystal display (LCD) are active. The LCD is shown on page
3. After the key is released, the instrument is ready for oper-
ation.
Switching the Instrument On via PC
After transmission of a data block from the PC, the instrument
is switched on. See also chapter 24.
Automatic Activation/Deactivation
To extend battery life, the instrument is switched on and off
automatically in the transmit and data storage modes provided
the transmit/storage interval rate is set at ≥10 s.
Note!
Electrical discharge and high frequency interference
can cause incorrect displays, and may block the measur-
ing sequence. To reset, switch the instrument off, and
then back on. If this procedure is unsuccessful, briefly
disconnect the battery from the contact terminals.
Setting Time and Date
See Chapter 23.1.3, page 58.
Switching the Instrument Off Manually
∞Press and hold the
ON key, until the display is deactivated.
Deactivation of the instrument is acknowledged by two brief
acoustic signals.
Automatic Shut-Off
Your instrument shuts itself off automatically, if the measure-
ment value remains constant for a long period of time (maxi-
mum measurement value fluctuation: approx. 0.8% of the
measuring range per minute or 1 °C or 1 °F per minute), and if
none of the keys or the rotary switch are activated for a period
of 10 minutes. Deactivation of the instrument is acknowledged
by a brief acoustic signal.
Exceptions are as follows:
Event counting, count zero crossing, stopwatch, transmit or
memory mode, continuous operation, power measurement and
line fault recording.
Disabling of Automatic Shut-Off
The instrument can also be switched to “CONTINUOUS ON”.
∞Simultaneously press the ON key and the multifunction key
ESC|FUNC when switching the instrument on. The “CON-
TINUOUS ON” function is indicated at the LCD with the
symbol.

10 PowerLogger 10 User’s Guide
3 Selection of Measurement Functions and
Measuring Ranges
The rotary switch is coupled to the automatic socket blocking
device, which makes two jacks available for each function
(except mA and A: 3 jacks. The jack for the “mA” socket in the
“A” function is half open). Before switching to the “mA” or
“A” functions, or out off the “mA” or “A” functions, be certain
that the plug has been removed from the corresponding jack.
The socket blocking device prevents inadvertent switching to
disallowed functions when a plug connection exists.
3.1 Automatic Measuring Range Selection
The instrument is equipped with automatic measuring range
selection for all measuring ranges, except for temperature mea-
surement and diode testing, as well as respective continuity
testing. This automatic feature is active as soon as the instru-
ment is switched on. The instrument automatically selects the
measuring range which provides optimum resolution for the
current measured quantity. The previously selected voltage
measuring range remains active after switching the instrument
to frequency measurement, events counting or count zero
crossing. The instrument is automatically switched to the next
highest or next lowest measuring range for the following mea-
sured quantities:
1)
2800 digits apply when switching from 300 kHz to 30 kHz.
3.2 Manual Measuring Range Selection
The automatic measuring range feature can be deactivated and
the ranges can be manually selected and prescribed according
to the following table.
The manual mode is deactivated by pressing and holding the
MAN|AUTO key (approx. 1s), by activating the rotary switch
or by switching the instrument off and back on again.
Measuring Range Reso-
lution
Switching to the
Next Highest Range
at ±(... d + 1 d)
Switching to the Next
Lowest Range
at ±(... d -1 d)
V , mA , Ω, Hz
1)
5 ¾ 310,000 28,000
V,V,A,
mA , A , 30 mF 4 ¾ 31,000 2,800
3 nF ... 3 mF 3 ¾ 3,100 280
⇓
MAN/
AUTO
Function Acknowledge
Dis-
play
Acoust .
Signal
Brief Manual Mode Active: selected measuring range is fixed MAN 1 x
Brief
Switching Sequence for:
V: 300 mV →3V→30 V →300 V →600 V →
300 mV → ...
dB: same switching sequence as for V
mA :300 μA→3mA→30 mA →300 mA →
300 μA ...
A: 3 A →10 A → 3 A ...
Ω:30MΩ→300 Ω→3kΩ→30 kΩ→300kΩ→
3MΩ→30 MΩ...
F: 3 nF →30 nF →300 nF →3 μF→30 μF→
300 μF→3000 μF→30000 μF→3 nF...
Hz: 300 Hz →3kHz→300 kHz →300 Hz ...
MAN 1 x
Long Return to Automatic Range Selection — 2 x

PowerLogger 10 User’s Guide 11
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3.3 Quick Measurements
If you wish to perform quicker measurements than those possi-
ble with the automatic measuring range selection function,
make sure to establish the appropriate measuring range:
•bymanual measuring range selection, i.e. by selecting
the measuring range with the best resolution, see chapter
3.2.
or
•viaDATA function, see chapter 5. After the first measure-
ment, the proper measuring range will be automatically
determined so that measurements are performed more rap-
idly from the second measured value onwards.
With both functions, the established measuring range is main-
tained for the subsequent series mode measurements.
4 Triple Digital Display
The three digital displays, one main display and two sub-dis-
plays, show the measurement value with correct decimal point
and sign. The selected unit of measure and the current type are
also displayed. A minus sign appears in front of the number for
the measurement of zero-frequency direct quantities, if the
positive pole of the measured quantity is applied to the “
⊥ ”
input.
“OL” (overload) is displayed, if the actual value falls below the
measuring range lower limit for the following measured quan-
tities:
V DC, I DC,
Ω, Hz: 309999
V (AC, AC+DC), I (AC+DC), dB (V), 30 mF: 30999
W, VA, VAr, Wh: 309 99
3 nF ... 3 mF: 3099
Refreshing of the digital display occurs at different intervals
for the various measured quantities (see display update page
71).
Although the main display is activated immediately after the
instrument is switched on, the two sub-displays must be acti-
vated with the DATA|CLEAR key. This prevents the continu-
ous display of an undefined condition which was present at the
start of measurement, e.g. open-circuit, as a maximum value.
015.000
013000 018000
Sub-Display: MIN
Main Display
Sub-Display: MAX

12 PowerLogger 10 User’s Guide
5 Measurement Value Storage
“DATA” (Hold & Compare)
Measurement values can be automatically “frozen” with the
DATA (Hold) function. This can be especially useful when
your full attention is required for testing the measuring point
with the test probes.
After the measurement value has been acquired, and the appro-
priate “condition” has been fulfilled according to the following
table, the measurement value is displayed in the left hand sub-
display and two acoustic signal sounds. At the same time
“MAN” appears and indicates that the measuring range is now
set. The test probes can now be removed from the measuring
point and the measurement value can be read from the sub-dis-
play. If the measurement value lies below the limit value
shown in the table, the instrument is reactivated for the storage
of a new value; the “DATA” display blinks.
Comparison of measurement values (DATA Compare)
If the newly stored measurement value deviates less than
0.33% of the measuring range from the first measurement
value, the acoustic signal (DATA Compare) sounds twice. If it
deviates more than 0.33 % from the measuring range, only a
brief signal sounds.
DATA
Acoustic Signal
015.000
015.010
015000

PowerLogger 10 User’s Guide 13
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1)
Reactivation when actual value falls below prescribed limit value
2)
Relative to alternating voltage values
3)
Also applies to continuity testing
4)
When a measurement value is stored for the first time as a reference value, the
acoustic signal sounds twice. For subsequent storage of the same measurement
value, the acoustic signal sounds only twice if the subsequently stored measure-
ment value deviates from the first value by less than 0.33% of the measuring
range dependent upon resolution.
5)
Exception: 10% at 300 Ωor 3 nF
Abbreviations
MR = Measuring range
As long as the DATA function is active, the measuring ranges
should not be changed manually.
The DATA function is deactivated if the DATA|CLEAR key is
pressed and held (approx. 1 s), if the rotary switch is activated
or if the instrument is switched off and back on again.
Function
DATA
⇓
DATA
Condition Response at Instrument
Measur-
ing Func-
tion
Measurement
Value
Sub-Display Acous-
tic
Signal
Meas.
Value DATA
Switch on brief
is
dis-
played
brief
Store
(stabilized
measure-
ment value)
V, dB
2)
,
A
F, Hz
> 3.3%
5)
of
MR is
dis-
played
brief
2x
4)
Ω
3)
,
3)
OL
5)
Reactivate
1)
V, dB
2)
,
A
F, Hz
< 3.3%
5)
of
MR stored
meas.
value blinks
Ω
3), 3)
OL
5)
Switch to
function
MIN/MAX brief see Table chapter 6
Quit long is
deleted is deleted 2x

14 PowerLogger 10 User’s Guide
6 Minimum and Maximum Value Storage
“MIN-MAX” with Time Stamp
Minimum and maximum values can be read out at the sub-dis-
plays for long-term observation of measured quantities.
∞ If the DATA|CLEAR key is activated twice, current MIN
and MAX values are displayed at the sub-displays.
∞ Press the DATA|CLEAR key again to display the MIN value
and the time of occurrence.
∞ If the DATA|CLEAR key is once again activated, the MAX
value and the corresponding time of occurrence are dis-
played.
MIN and MAX values are deleted by pressing and holding the
DATA|CLEAR key (approx. 1 s), by activating the rotary
switch or by switching the instrument off and back on again.
Note!
No new MIN-MAX values are determined for
2 seconds after a change of measuring range, so that
measurement values can stabilize.
Function
MIN/MAX ⇓ DATA
MIN and MAX
Measurement Values
/Time of Measure-
ment
Reaction at Instrument
Display Acoust
Signal
Main Display Sub-
Displays
1.
Store 2 x brief are stored
current
measurement
value
MINand
MAX 1 x
2.
Store and
display
brief
are stored
t and
MIN 1 x
brief t and
MAX 1 x
3.
Return to 1. brief are stored same as 1. same as
1. 1 x
Cancel long are deleted is deleted is
deleted 2 x

PowerLogger 10 User’s Guide 15
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CLEAR
long
DATA
brief
DATA
brief
DATA
brief
DATA
brief
MIN MAX
tMIN MIN
tMAX MAX
Current
DATA
brief
09:20:05
09:20:05
015.000
015.345
015.345
015.345
015.986
015.123
015.345
015.678
015.986
Measurement Value
Current
Measurement Value
Current Meas. Value
Current Meas. Value

16 PowerLogger 10 User’s Guide
7 Auto Select
In the Auto Select switch position, the auto-select function
(automatic selection of measuring function) allows for autono-
mous recognition of the measured quantity, which is applied
between earth and the voltage jacks.
An overview of possible measured quantities as well as the
respective prerequisites for recognition can be found in the
AUTO SELECT table on page 67.
Note!
Diodes must be connected from the anode side (“+”
pole) to the jack.
For polarized capacitors, the “+” pole must be con-
nected to the “F” jack and the “–” pole to the
“⊥” jack.
Resistors and semiconductor paths connected in parallel
to the capacitor distort measurement results!
∞ Set the rotary switch to AUTO SELECT.
Attention!
!
In the auto-select function, no more than 600 V
TRMS
may be applied between “ ⊥ ” and “V” jacks.
∞ Connect the measurement cables as shown. The “ ⊥ ” jack
should be grounded.
Note!
The following chapter contains more information con-
cerning individual measured quantities.
0PEn
600V
V
F°C

PowerLogger 10 User’s Guide 17
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8 Voltage Measurement
∞ Depending upon the voltage to be measured, set the rotary
switch to V , V or V .
∞ Connect the measurement cables as shown. The “ ⊥ ” jack
should be grounded.
Note!
In the 600 V range, an intermittent acoustic signal
sounds alarm if the measurement value exceeds
1000 V.
Attention!
!Make absolutely certain that neither of the current
ranges
(“mA” or “A”) is active when the instrument is
connected for voltage measurements! If the fuse trip
limits are exceeded due to operator error, both the oper-
ator and the instrument are in danger!
Zero Balancing in the 300 mV Measuring Range
∞
Select the 300 mV measuring range.
∞ Connect the measurement cables to the instrument, and con-
nect the free cable ends to one another.
∞ Briefly press the multifunction key ESC|FUNC.
015.000
600V
V
F°C
– (+)
~
+ (–)
~

18 PowerLogger 10 User’s Guide
The instrument acknowledges zero balancing with an acoustic
signal and “
000 . 000 ” ( ± 1 digit) and the “ZERO” symbol
appear at the LCD. The voltage which was displayed at the
moment the key was activated serves as a reference value
(max.
± 20000 digits). It is automatically subtracted from sub-
sequently measured values.
∞ Zero balancing can be deleted:
– by pressing and holding the multifunction key ESC|FUNC,
after which deletion is acknowledged with a twice
repeated acoustic signal,
– by switching the instrument off.
8.1 Transient Overvoltages
The instruments are protected against transient overvoltages of
up to 6 kV with a halftime value for front time of 1.2/50
μ s.
Due to the fact that overvoltages of greater duration can be
expected for measurements at transformers or motors etc., we
recommend our KS30 measuring adapter. It provides protec-
tion against transient overvoltages of up to 6 kV with a half-
time value for front time of 10/1000
μ s. Continuous loading
capability is equal to 1200 V
TRMS
. Additional influence error
due to use of the KS30 measuring adapter amounts to approxi-
mately –2%.
8.2 Voltage Measurements for Greater than 600 V
Voltages of greater than 600 V can be measured with a high-
voltage probe, e.g. the HV3 (3 kV) or the HV30 (30 kV DC) of
Dranetz-BMI. The earthing terminal must be connected to
ground for measurements of this type. Observe all required
safety precautions!
000.000
Voltage Measurement > 600 V
with HV3 High-Voltage Probe
Black
Black
Red
x1000 x100
V
F
° C

PowerLogger 10 User’s Guide 19
GB
8.3 Alternating Voltage Level Measurement (dB)
The voltage level measurement is
used for determining the overall
damping or gain of a transmission
system (shown here as a two-port
network).
Voltage level [dB]
with V
1
= V
REF
(reference level rEF
vALUE
)
result > 1: gain; result < 1: damping
∞ Set the rotary switch to V .
∞ Briefly press the multifunction key ESC|FUNC.
The level measurement function is now active. The measure-
ment value is calculated from the effective value of the alter-
nating voltage component dependent upon the measuring
range (300 mV ... 600 V), and is displayed. The default setting
for the reference level is 0 dB = 0.775 V (1 mW at 600
Ω ) and
appears in the left hand sub-display. This value can be changed
in the Setup menu:
SEt
↵ V rEF
vALUE
↵ V unit dB ↵ XXX.XXX V/dB VU↵ .
Note!
No matching resistors have been installed into the instru-
ment. It takes measurements with a high input resistance
of 5 M
Ω . Input resistance for voltage measurement is
listed under technical data. In order to perform correct
measurements at non-terminated devices under test, a
matching resistor must be connected to the terminals.
Observe power dissipation at the matching resistor!
600V
V
F°C
U
N
= max. 1 kV
Voltage Measurement with
the KS30 Measuring Adapter
V
1
V
2
20
V
2
V
1
--------log
⋅ =

20 PowerLogger 10 User’s Guide
Alternating voltage applied to the jacks appears at the right
hand sub-display.
∞ The alternating voltage measuring range is selected with the
MAN|AUTO key.
∞ The measurement value storage function for dB is made
available by pressing the DATA|CLEAR key.
∞ If the DATA|CLEAR key is pressed again, the normal dis-
play for dB with MIN/MAX values appears.
∞ If the ESC|FUNC and MAN|AUTO keys are pressed simul-
taneously, the actual measurement value becomes the refer-
ence value. The instrument returns to the first display with
the measurement value as reference level.
∞ If the ESC|FUNC multifunction key is activated repeatedly,
the instrument is switched to frequency measurement, event
measurement, voltage measurement and finally back to level
measurement.
The dB ranges are listed under technical data.
FUNC
brief
Reference Level Alternating
Voltage
Level
DATA
brief
DATA
brief
Stored
Level
011.75
011.50
011.50
07750 3.0000
011.50
011.00 012.00