CEMB N600 User guide

Vibration equipment division
www.cemb.com
CEMB S.p.A.
Via Risorgimento, 9
23826 MANDELLO del LARIO (Lc) Italy
*Translation of the original instructions
N600
Dual chaNNel spectrum aNalyzer
aND BalaNciNg
use aND maiNteNaNce iNstructioN maNual

Vibration equipment division
N600 - Ver.2.2 09/2015
General Index
1. General descrIptIon 5
1.1 Standard acceSSorieS 5
1.2 optional acceSSorieS 5
1.3 connectionS 6
1.4 Battery 7
1.5 General advice 7
2. General layout 8
2.1 KeyS/ButtonS on the control panel 8
2.2 General purpoSe functionS 10
2.2.1 Functions associated with the measuring phase 10
2.2.2 Function “other Functions...” 10
2.2.3 Functions operating on the graphs 11
2.2.4 T
osave measurements 13
2.2.5 T
ocapture and save displayed images 14
3. Home screen (menu) 15
4. setup mode 16
4.1 SenSor Setup 16
4.1.1 type oF sensor 16
4.1.2 sensitivity oF the sensor 17
4.1.3 photocell 17
4.2 MeaSureMent Setup 18
4.2.1 unit oF measure 18
4.2.2 measurement type 18
4.2.3 unit oF Frequency 19
4.2.4 max Frequency 19
4.2.5 no. oF lines 19
4.2.6 no. oF means 19
4.3 General Setup 20
4.3.1 date 20
4.3.2 time 20
4.3.3 language 20
4.3.4 measurement system 20
4.3.5 time zone 20
4.3.6 updating oF Firmware 20
5. VIbrometer mode 22
5.1 viBroMeter - MeaSureMent Screen 22
5.1.1 direct printing oF the vibration value (optional) 22
5.2 MonitorinG in tiMe 23
5.3 MonitorinG in Speed 23
6. FFt (Fast FourIer transForm) analyzer mode 25
6.1 SpectruM analySiS (fft) 25
6.2 harMonic curSor 25
6.3 WaveforM function 26
6.4 triGGer Setup 26
1. General descrIptIon 5
1.1 Standard acceSSorieS 5
1.2 optional acceSSorieS 5
1.3 connectionS 6
1.4 Battery 7
1.5 General advice 7
2. General layout 8
2.1 KeyS/ButtonS on the control panel 8
2.2 General purpoSe functionS 10
2.2.1 Functions associated with the measuring phase 10
2.2.2 Function “other Functions...” 10
2.2.3 Functions operating on the graphs 11
2.2.4 Tosave measurements 13
2.2.5 Tocapture and save displayed images 14
3. Home screen (menu) 15
4. setup mode 16
4.1 SenSor Setup 16
4.1.1 type oF sensor 16
4.1.2 sensitivity oF the sensor 17
4.1.3 photocell 17
4.2 MeaSureMent Setup 18
4.2.1 unit oF measure 18
4.2.2 measurement type 18
4.2.3 unit oF Frequency 19
4.2.4 max Frequency 19
4.2.5 no. oF lines 19
4.2.6 no. oF means 19
4.3 General Setup 20
4.3.1 date 20
4.3.2 time 20
4.3.3 language 20
4.3.4 measurement system 20
4.3.5 time zone 20
4.3.6 updating oF Firmware 20
5. VIbrometer mode 22
5.1 viBroMeter - MeaSureMent Screen 22
5.1.1 direct printing oF the vibration value (optional) 22
5.2 MonitorinG in tiMe 23
5.3 MonitorinG in Speed 23
6. FFt (Fast FourIer transForm) analyzer mode 25
6.1 SpectruM analySiS (fft) 25
6.2 harMonic curSor 25
6.3 WaveforM function 26
6.4 triGGer Setup 26
6.4.1 modes 27
6.4.2 channel 27
6.4.3 threshold 28
7. balancer mode 29
7.1 Selection of the BalancinG proGraM 30
7.1.1 new program - balancing setup 30
7.1.1.1 number oF planes 30
7.1.1.2 Filter accuracy 30
7.1.2 load program From archive 31
7.1.3 use current program 31

N600 - Ver.2.2 09/2015
6.4.1 modes 27
6.4.2 channel 27
6.4.3 threshold 28
7. balancer mode 29
7.1 Selection of the BalancinG proGraM 30
7.1.1 new program - balancing setup 30
7.1.1.1 number oF planes 30
7.1.1.2 Filter accuracy 30
7.1.2 load program From archive 31
7.1.3 use current program 31
7.1.4 copy archive to usb key 31
7.2 caliBration Sequence 32
7.3 execution of MeaSureMent 33
7.3.1 test weight 33
7.4 unBalance MeaSureMent and calculation of the correction 34
7.5 SplittinG of correction WeiGht 36
7.6 SavinG of aBalancinG proGraM 37
8. data manaGer mode 38
8.1 open exiStinG project 38
8.2 chanGe Selected pointS 39
8.3 neW project 40
8.4 iMport projectS froM
USB
Key 40
8.5 export projectS to uSB Key 40
8.6 delete projectS 41
9. arcHIVe FunctIon 42
9.1 load ScreenShot 42
9.2 delete ScreenShotS 43
10. cemb n-pro proGram (optIonal) 44
10.1 SySteM requireMentS 44
10.2 inStallation of the SoftWare 44
10.3 inStallation of driverS for uSB coMMunication With the n100, n300 inStruMentS
(for verSion 1.3.4 or earlier) 45
10.4 inStallation of driverS for uSB coMMunication With the n100 and n300 inStruMentS
(for 46
verSion 1.3.5 and later only) 46
10.5 activatinG the SoftWare 47
10.6 uSe of the SoftWare 48
10.6.1 Function bar 48
10.7 General SettinGS 49
10.8 readinG data froM the n100 or n300 inStruMent 50
10.9 data recordS iMported froM the n100 or n300 inStruMent 51
10.10 R
eadinG data froM the n600 inStruMent 51
10.11 diSplayinG data preSent in the recordS 52
10.12 Specific functionS for the SpectruM GraphS 52
10.13 SynchronouS viBration value MeaSureMent (only for n100 and n300 inStruMentS) 53
10.14 BalancinG data (only for n300 and n600 inStruMentS) 54
10.15 Generation and printinG of certificateS (reportS) 54
10.16 GeneratinG and printinG Multiple MeaSureMent certificateS (Multi-report) 55

Vibration equipment division
N600 - Ver.2.2 09/2015
Appendix A
specIFIcatIons 5
6
Appendix B
eValuatIon crIterIa 5
8
Appendix C
a rapId GuIde to InterpretInG aspectrum 6
2
Appendix D
laser sensor For cemb n Instruments 6
8
Appendix E
InFormatIon related to tHe creatIon oF customIsed templates (models) For certIFIcates Generated by
cemb n-pro soFtware 69
Attachment: Balancing accuracy for rigid rotors

N600 - Ver.2.2 09/2015

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N600 - Ver. 2.2 09/2015
1. General descrIptIon
The N600 instrument is supplied, together with its accessories, in a special case. It is advisable, each time the instrument is
used, to place back it in its case in order to avoid risk of damage during transit.
1.1 standard accessorIes
• No. 2 velocity transducers 100mV/g
• No. 2 transducer connection cables L 2.5 m
• No. 1 heavy duty spiral cable L 2 m
• No. 2 magnetic bases Ø 25 mm
• No. 2 probes
• No. 1 250.000 Cpm Hi-speed, laser photocell complete with upright and magnetic base
• No. 1 roll of reecting paper
• No. 1 USB stick for data transfer
• Angle rule
• Battery charger
• Universal plug
• Case complete with carry strap
• User manual
1.2 optIonal accessorIes
• Bluetooth thermal printer for direct printing of certicates on normal or adhesive thermal paper
• Protective cover
• Acceleration transducer type DM-40 complete with connection cable and magnetic base
• Proximity sensor type ARA-18 complete with stand, cable and magnetic base
• Connection cable for transducers L 5 m
• Extension cable, length 10 metres, for transducers
• Extension cable, length 10 metres, for photocell
• CEMB ADS software for data storage and management
aFter connecting the printer via bluetooth, wait For about 5 seconds to allow completion oF the automatic re-
cognition and initialization procedure. only at this point will it be possible to make aprint-out by pressing relative
key F
3 .

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N600 - Ver. 2.2 09/2015
1
23
4
5
6
7
1.3 connectIons
1 Battery charger
2 Internal heat dissipation area (electronics)
3 Network port (useful to connect the instrument to a PC and share a folder for data exchange between the two)
4 2 USB ports type A (master)
5 Instrument reset button
6 Battery charge indication led
7 Photocell input
8 2 inputs, measuring channels
To connect the sensors and photocell, merely plug the connector in the corresponding socket, pushing it until it clicks into
place; make sure that the safety connection is correctly aligned as shown in the gure.
Instead, to extract the connector, press its end part (blue or yellow) and at the same time pull the main body (grey), in order
to release it.
————————————————————————————————————————————————————
warnInG!
aVoId pullInG tHe connector wItH Force beFore releasInG It as descrIbed aboVe,
otHerwIse tHere would be rIsk oF damaGInG It.
————————————————————————————————————————————————————

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N600 - Ver. 2.2 09/2015
1.4 battery
The N600 instrument is provided with a built-in rechargeable lithium battery, which allows autonomy of more than eight hours
under normal operating conditions of the instrument.
The battery status is indicated by an icon in the upper right hand corner of the screen.
battery fully charged
battery partly charged
battery almost at (battery life remaining when this appears is approx. one hour)
battery at: recharge within 5 minutes
In these conditions, any still active measurements are interrupted and therefore not yet saved.
————————————————————————————————————————————————————
warnInG!
ItIs stronGly recommended to recHarGe tHe battery wItH tHe Instrument swItcHed oFF: as recHarGInG Is completed wItHIn
less tHan FIVe Hours sucH precautIon preVents tHe battery cHarGer From beInG connected For an excessIVely lonG perIod
oF tIme (max. 12 Hours).
————————————————————————————————————————————————————
————————————————————————————————————————————————————
warnInG!
tHe lItHIum battery Is able to wItHstand tHe recHarGInG-dIscHarGInG cycles, eVen on adaIly basIs, wItHout problems but It
could become damaGed IF allowed to be Fully dIscHarGed. For tHIs reason It Is adVIsable to recHarGe tHe battery at least
once eVery tHree montHs, eVen In tHe case oF extended Idle perIod
————————————————————————————————————————————————————
asthe greater consumption is due to the back lighting oF the lcd display, the latter is switched oFF automatically
aFter two minutes iF no button is pressed. the pressing oF any button (except For and those oF the alphanu-
meric keypad) is suFFicient to switch the back lighting on again.
1.5 General adVIce
Keep and use the instrument far from sources of heat and strong electromagnetic elds (inverters and high-power electric
motors). Measurement accuracy could be impaired by the connection cable between the transducer and instrument, there-
fore it is recommended to:
• not allow such cable to have sections in common with power cables;
• prefer a perpendicular arrangement when overlapping power cables;
• always use the shortest possible length of cable; in fact oating lines would act as active or passive antennae.

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N600 - Ver. 2.2 09/2015
2. General layout
2.1 keys/buttons on tHe control panel
The control panel of the CEMB N600 instrument incorporates a keypad where the various keys or buttons can be subdivided
by function:
►ON / OFF button
Press this button to switch the instrument on; hold it down for at least 3 seconds to switch it off , then release the
button.
aFter pressing , the instrument is ready For use only at the end oF the switching on procedure, signalled by
the appearance oF the home screen (
home screen - menu
).
aFter the insrument has been switched oFF, about 30 seconds must pass beFore it can be switched back on again.
►Buttons for navigating between the pages
When this button is pressed in the setup screen, it conrms the settings selected and allows going onto the next
screen. Instead, in the Measurement screen, it has the function of starting/stopping the actual measurement (
START / STOP THE ACQUISITION).
toFacilitate use oF the instrument also with the leFt hand, the button is located on both sides oF the
display.
When this button is pressed, it causes quitting of the current screen with return to the previous one, without taking
into account any changes (or saves) in the settings
Used for returning to the Main page, from any other page.
►Function keys
Each function key is linked to different functions in the various screens. Such functions are indicated in each individual case
by the buttons shown at the bottom of the display: each function is activated by pressing the function key under it.

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N600 - Ver. 2.2 09/2015
TT U
PQ R -01
In the setup screens they are used for setting the various parameters, each one being indicated by a number corresponding
to that of the function key to be pressed to modify it.
►Tab key
This key can only be used when two graphs are plotted on the same page; when pressed, it changes the active
graph to which the selected functions will be applied. The active graph can be identied by the symbol loca-
ted on the right side.
►Arrow keys
When a graph is displayed, these keys increase or decrease respectively the minimum or max. value of the x axis ( ,
) or the y axis ( , ). Instead, when inputting a value for a parameter, they either shift the cursor to the
left or right ( , ) and increase or decrease the value in question ( , ).
►Alphanumeric keypad
This keypad serves for entering alphanumeric characters in the elds which do not allow just default selections. Where it is
possible to enter just numbers, it acts like a normal numeric keypad.
To enter a character, press a key repeatedly to scroll the characters assigned to it (e.g. M N O 6) until the required one is
displayed. The cursor passes on automatically to the next position after a pause of one second, or else after pressing ano-
ther key.
With it is possible to delete the character to the left of the cursor.
For example, suppose we wish to enter the word “TUR-1” press:

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N600 - Ver. 2.2 09/2015
anicon indicates whether the upper case style
(selectable with ) or lower case (selectable
with
).
►Image capture key
Pressing of this key has the function of capturing the image present on the display and opening a screen which
allows it to be saved ( CAPTURE AND SAVING OF DISPLAYED IMAGES).
2.2 General purpose FunctIons
In addition to many functions, specic for each different purpose and described in relative sections, there are certain general
purpose functions which are described below.
2.2.1 Functions associated with the measuring phase
►Start / Stop acquisition
In all the Measurement screens, acquisition is started by pressing and is subsequently stopped by again pressing
.The active acquisition status is easily to recognize (except in the balancing function) by the presence of a bar indi-
cating level of the input signal to each of the activated channels.
Instead, in the Balancing functions, this status is signalled by an indication of the quality of the measurement in progress
( EXECUTION OF MEASUREMENT).
2.2.2 Function “other Functions...”
When there are more than six functions accessible from a certain screen, there are not enough function keys to correspond
to them; in such cases the key is associatedwith .
Pressing of this key causes substitution of the functions corresponding to with another ve. The original
correspondence can be reset by again pressing .

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2.2.3 Functions operating on the graphs
►Scale setting
allows selecting the function for modication of the minimum and maximum values of the axes in a
graph; in this way it is possible to display just the zone of greater interest. When activated, the following
sub-functions are made available:
quit the Scale Setting function
preset minimum value of the x axis
preset maximum value of the x axis
preset minimum value of the y axis
preset maximum value of the y axis
sets the axis limits to be coherent with the graph data
The value of the limit selected (xmin, xmax, Ymin or else Ymax, displayed by white wording on black background), can be increased
or decreased by pressing , for X axis and , for Y axis.
measurement can be started with also while set scale is activated but it would automatically cause exit
From this Function.
when two graphs are shown both at the same time on the same screen, the scale Functions operate on the active graph
(identiFied by symbol
). tochange the active graph, proceed to press the key
.
►Use of the cursor
For easier reading and interpretation of the displayed data, it is possible to introduce a cursor in any graph, provided the
visible region is not blank: this can be done with F2 . A window at the top right corner of the graph contains the
co-ordinates of the point where the cursor lies.
The cursor can be shifted by one step to the right or to the left by using thefollowing keyse F1 or F3
respectively.
For quick reaching of points from the current position, hold down F1 or F3 . With F2 the
cursor is removed.

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N600 - Ver. 2.2 09/2015
measurement can started with also while the cursor is visible; at the end oF the measurement, the cursor
remains visible.
when two graphs are represented on the same screen simultaneously, it is possible to display the cursor on both
in order to have easier comparisons and assessments. however, pressing oF the Function keys will only have eFFect
on that oF the currently activated graph (identiFied by the symbol
). tochange the activated graph, proceed to
press the key.
►Change of display channel
If both measuring channels are enabled, various types of display are possible, namely:
• just graph of channel Ch1
• just graph of channel Ch2
• graphs of channels Ch1 and Ch2 simultaneously
The passing in sequence between the various possibilities is obtained by repeatedly pressing This corresponds in
each case to these options or
►List of peaks
When this function is selected, a table appears with the 10 peaks of highest value present in the zone of the spectrum displa-
yed, and associated with the corresponding frequencies. Their value is calculated by applying an interpolation algorithm to
the FFT graph; this also allows identifying peaks not situated in correspondence to one of the lines of the spectrum.
When F5 is pressed, the system quits this function and again displays the graph (or graphs).
the 10 highest peaks are determined in relation to the highest value present in the spectrum; hence in certain cases
the list could contain less than 10 peaks..

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N600 - Ver. 2.2 09/2015
iFgraphs oF both channels are displayed, the list oF peaks should be calculated For the active one (identiFiable by
the symbol
).
2.2.4 T
osave measurements
The N600 instrument, structured according to a route logic, allows easily saving acquired data; to this end, two different route
types are available ( DATA MANAGER MODE):
• Soft route
• Strict route
If using Soft Route, pressing allows viewing the PROJECT STRUCTURE screen relating to the tree correspon-
ding to the currently active route. All the individual measurement points marked by the symbol , allow saving the data
several times.
Select the measurement point in which to save the measurement made using the arrows and , and then press
to save the measurement in the selected point.
If you have done a two-channel acquisition, both channels are automatically saved in the same le.
If using Strict Route, pressing F5 a pop-up will inform you that the measurement has successfully been saved.
the , button, accessible by pressing , allows reloading the measurements previously
processed.
U
sing the arrows and , select the measurement you want to reload (indicated by the date [mm/dd/yyyy]
and time [hh:mm:ss] oF acquisition) and conFirm by pressing the button
.

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N600 - Ver. 2.2 09/2015
2.2.5 T
ocapture and save displayed images
In all screens of the N600 instrument, the image visible on the display can be captured with then saved in png format
in an appropriate archive. This image can be used subsequently if required to accompany documentation produced by the
operator.
Selection of the position where to save can be done with the arrow keys and , then merely press F2
to display a pop-up where to enter the required name, as explained in ALPHANUMERIC KEYPAD.
To delete an image, and clear the corresponding position in the archive, merely press the button F3 .Instead with
F4 it is possible to fully clear the image le.
When pressing the above mentioned buttons, the popup shown below asks you to conrm the operation with the button
or quit with the button .
Finally, pressing F6 , all the image les on the instrument will be copied to a folder called Screenshots, which will
automatically be created on the USB key inserted in the instrument.
E
ach time you want to save new images on the same usb key, ’other subFolders named with the date and time will be
created in the screenshots Folder.
keys
and
, which either increase or decrease by 10 respectively the position selected, can be used
For quick scrolling oF the archive.

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N600 - Ver. 2.2 09/2015
3. Home screen (menu)
After fully switching on the N600 instrument, it shows its Home screen:
which, besides showing a set of information:
• manufacturer logo and name of the instrument
• serial number (S/N) of the instrument
• current program version
• battery state:
>fully charged
>partly charged
>almost at
>at
>instrument being charged (connection to socket via the battery charger supplied)
as a normal menu, it also proposes and allows selection of the available modes, namely:
►Vibrometer mode
• measurement of the total value and synchronous measurement of vibration
• measurement and memorization of the trend in vibration against variation in time or rotor speed
►FFT (Fast Fourier Transform)
• splitting of the vibration into its component frequencies
• display of waveform of the vibration
►Balancer mode
• balancing of rotors
►Setup mode
• setting of the characteristics of sensors connected to the instrument
• setting of the general operating parameters of the instrument
►Project management
• open an existing project
• modify the measurement points selectable in a project during a eld measurement campaign
• create a new project (Soft Route only)
• import new projects (Soft Route and Strict Route) from USB key
• export projects from the instrument to USB key
• delete existing projects
►Archive
• load a previously stored screenshot

16
N600 - Ver. 2.2 09/2015
• delete one or all the previously stored screenshots
itis possible to return to this screen From any other by pressing
.
4. setup mode
This function allows making all the possible conguration settings on the N600 instrument. More specically, these settings
are:
• Sensor setup: conguration of the sensors that interface with the instrument
• Measurement setup: conguration of the measurement settings
• General setup: conguration of the general operating parameters of the instrument.
4.1 sensor setup
The N600 instrument can be used with different types and models of sensors. Therefore in order to ensure correct measu-
rement, it is necessary to preset exactly the type of sensitivity of the sensors actually connected.
although the instrument can operate correctly with any combination oF sensors, it is advisable to connect sensors
oF the same type and model to the two channels.
4.1.1 type oF sensor
Any one of the following possibilities can be selected:
• OFF : sensor not present (or else channel to be kept switched off)
• ACCEL : accelerometer
• VELOC : velocity sensor
• DISPLC : proximity sensor (non-contact)
itis not possible to set both channels to oFF; at least one oF the two channels should be activated

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although the required unit oF measurement can diFFer From the natural one oF the sensor, these are the only
combinations are possible.
TYPE OF SENSOR REQUIRED MEASUREMENT
ACCEL acceleration, speed, displacement
VELOC speed, displacement
DISPLC displacement
the n600 instrument is able to determine automatically whether there is no sensor connected to an enabled chan-
nel (i.e. not set to oFF sensors setup) and it signals this by showing the symbol in the vicinity oF the signal
bar oF the corresponding channel (only during measurement). toavoid displaying this symbol, it is advisable to disa-
ble the channel when not used, by setting to oFF.
————————————————————————————————————————————————————
warnInG!
tHe appearance oF tHIs symbol For acHannel wHere asensor Is really connected,
could IndIcate apossIble malFunctIon oF tHe sensor or else aproblem In connectIon
(e.G. tHe cable could HaVe been sHeared).
InsucH case It Is adVIsable to carry out aFew tests by connectInG asensor (wHIcH Is known to be operatInG properly) to
tHe cHannel In questIon; IF tHe IndIcatIon persIsts, contact cemb tecHnIcal serVIce.
————————————————————————————————————————————————————
4.1.2 sensitivity oF the sensor
This is the number of volts per unit produced by the sensor: it is expressed for the various types in:
TYPE OF SENSOR SENSITIVITY TYPICAL VALUE
ACCEL mV/g 100
VELOC mV/(mm/s) 21,2
DISPLC mV/µm 4
————————————————————————————————————————————————————
warnInG!
dIFFerent models can HaVe sensItIVIty dIFFerInG From tHe typIcal Values; pay attentIon
wHen takInG tHe correct Value From tHe sensor documentatIon and preset It .
————————————————————————————————————————————————————
4.1.3 photocell
You can set activation of the photocell or its power circuit. Setting the parameter to ON, the photocell will continuously be
powered as soon as it is connected to the instrument.
iFthe photocell is not enabled, when you select aprogram that requires’its use, apop-up will ask you to activate it.

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N600 - Ver. 2.2 09/2015
4.2 measurement setup
In the case of analysis using a Soft Route, this function allows making the necessary settings to obtain a correct overall value
measurement via the Vibrometer function as well as highlighting signicant data in the spectrum, separating them from the
ineliminable background noise relating to the FFT function.
I
nthe case oF analysis using astrict route, this Function allows checking but not modiFying the parameters set.
the symbol allows identiFying asetup relating to astrict route.
4.2.1 unit oF measure
Select the unit of measure in which you want the vibration measurement to be provided; the options are:
• Acceleration (g) - strengthens the higher frequencies and weakens the lower frequencies
• Speed (mm/s or inch/s)
• Displacement (µm or mils) - strengthens the lower frequencies and weakens the higher frequencies
4.2.2 measurement type
This is the mode in which each component (line) of the spectrum is provided and may be:
• RMS (Root Mean Square):
This is the mean vibration value squared beforehand.
This value is typically used in the European standards, in particular for acceleration or speed measurements.
It is a direct index of the “energy” content of the vibration. In practice, it represents the power the vibration carries with it,
which is discharged onto the supports of the vibrating structure.
• PK (Peak):
This is the maximum value the vibration has reached in a certain time interval.
For purely sinosoidal signals, it is simply equal to the RMS value multiplied by 1.41.
• PP (Peak-to-Peak):
This is the difference between the maximum and minimum values the vibration has reached in a certain time interval; for
purely sinosoidal signals, it is simply equal to the RMS value multiplied by 2.82.
It is normally used for displacement measurements.