Gossen MetraWatt MAVOSPEC BASE User manual

Operating Instructions
MAVOSPEC BASE 15579
Spectrometer 1/07.16

2 Gossen Foto- und Lichtmesstechnik GmbH
Thank you for selecting a GOSSEN product.
You’ll enjoy easy operation, top quality and precise measurement, as well as an extensive range of applications.
Please check to makes sure that all of the parts listed below have been included in the scope of delivery.
If anything is missing, please contact your dealer.
MAVOSPEC BASE
Cover cap, micro SDHC memory card (installed in the battery compartment), SD adapter
V070A rechargeable battery, power pack and USB interface cable
Aluminum case, sheath, carrying strap
Calibration report
Operating instructions (German/English)
Outstanding MAVOSPEC BASE Measuring Functions and Features
Spectral power distribution within a range of 380 to 780 nm (VIS)
Chromaticity, color coordinates per CIE 1931 [x,y], CIE 1960 [u,v], CIE 1976 [u',v'], display of the CIE standard color table
Correlated color temperature CCT and color rendering index Ra, as well as individual indices R1 through R15
Flicker value as index, as percentage [%] and with frequency [Hz]
Illuminance with cosine-corrected measuring probe in accordance with class B per DIN 5032-7
Large dynamic range from 10 to 100,000 lx, highest resolution: 0.01 lx
Automatic or manual measured value storage to an interchangeable micro SDHC memory card
Easy data transfer thanks to CSV format
Documentation of measured values via included Excel templates for evaluation
Universal USB port for convenient data exchange, device control, firmware updates and battery charging
Individualized system integration via open USB interface protocol
Sustainable device concept thanks to update option via USB port
Ecological power supply with rechargeable Li-ion battery, recharging via USB port and display of charging status and charge level
Extremely long rechargeable battery operating time of roughly 8 hours continuous operation, which can be extended thanks to adjustable
display and device shutdown
Outstanding measured value stability thanks to automatic temperature compensation and zero-point correction
Individualized calibration (photometric and radiometric), calibration report included in scope of delivery
Convenient daily use, intuitive operation via ring controller, readily legible high-resolution color display, compact design

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Table of Contents
Page
Safety Precautions, Warnings and Other Notes
5
1
Initial Startup
1.1
Inserting the Memory Card
8
1.2
Inserting the Rechargeable Battery
8
1.3
Charging the Battery
9
1.4
Default Settings
9
2
The Meter and its Controls
2.1
Device Overview
10
2.2
Controls
11
2.3
Display
12
3
Functions
3.1
Switching the Meter On
13
3.2
Measurements
13
3.3
Measured Value Window
14
3.3.1
Spectrum
15
3.3.2
Report
15
3.3.3
CIE
16
3.3.4
CRI
16
3.3.5
Data
16
3.4
Measured Value Memory
17
3.4.1
Saving Measured Values to Memory
17
3.4.2
Loading Stored Measured Values
17
4
MENU
4.1
Overview
18
4.2
Navigation –Setup
19
4.3
MENU –General
20
4.4
MENU –Settings
21
4.5
MENU –Measurements
22
4.6
MENU –Memory
23
4.7
MENU –Presentation
24
4.8
MENU –Information
25

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5
USB Port
25
6
Firmware Update
25
7
Documenting Measured Values
26
8
Practical Tips
26
9
Factory Calibration
27
10
Service
27
11
Error Messages
28
12
Technical Data
29
EU Declaration of Conformity
31

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Safety Precautions
Please read these safety precautions carefully before using your meter. This will help you to avoid damaging the product and prevent personal injury.
This symbol identifies important warnings which should be read
in any case before initial startup of your GOSSEN product.
Warnings
In the event of malfunctioning, switch the meter off immediately.
If the event that smoke develops or unusual odors become apparent, which are caused by either the meter or the power pack,
disconnect from mains power immediately and remove the rechargeable battery from the device in order to prevent possible fire.
Continuing to operate the meter or the power pack after such malfunctions have occurred may result in severe injury.
Please contact your local dealer or GOSSEN Service in order to eliminate malfunctioning. If you bring or send the meter in for repairs,
make sure that the rechargeable battery has first been removed.
Do not use the meter in proximity to flammable gases.
Electronic devices should never be used in proximity to flammable gases. Danger of explosion and fire is otherwise immanent.
Never hang the device from children with the carrying strap.
Danger of strangulation exists if the carrying strap is hung around the neck of a child.
Store the meter at a location which cannot be accessed by children.
The meter and its accessories include parts which can be swallowed. Make sure that these parts (e.g. housing covers, rechargeable
batteries etc.) do not fall into the hands of children who might swallow them. Otherwise, danger of suffocation prevails.
Use suitable cables only.
Use included, original GOSSEN cables only for connection to external devices. GOSSEN assumes no liability if other cables are used.

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Do not dismantle the meter.
Never touch any parts inside the housing. Injury may result. Do not repair the meter yourself. Repairs may only be conducted by
appropriately trained personnel. If the meter’s housing is damaged due to dropping or other external influences, remove the
rechargeable battery or power pack and contact your local dealer or GOSSEN Service for repair.
Avoid any and all contact with the liquid crystals.
If the display is damaged (e.g. broken), danger of injury due to contact with glass shards or discharge of liquid crystals exists. Make
sure that skin, eyes and mouth do not come into contact with the liquid crystals.
Be careful when handling rechargeable batteries.
Rechargeable batteries may leak or explode if handled incorrectly. Please adhere to the following safety precautions:
• Make sure that the meter is switched off before removing or inserting rechargeable batteries.
If the meter is used with a power pack, supply power must first be disconnected (pull the mains plug out of the electrical outlet).
• Only use rechargeable batteries which are recommended for this meter.
• Make sure that the rechargeable battery is correctly inserted.
• Never short-circuit rechargeable batteries, and never attempt to open a rechargeable battery.
• Do not expose rechargeable batteries to excessive heat or open fire.
• Do not expose rechargeable batteries to moisture and never immerse rechargeable batteries in water.
• After removing the rechargeable battery from the meter, close the battery compartment with the lid
(e.g. if the meter will not be used for a lengthy period of time).
• Never store rechargeable batteries together with metallic objects which might cause short-circuiting.
• Danger of leakage exists, especially in the case of empty rechargeable batteries. In order to prevent damage to the meter,
rechargeable batteries should be removed when fully depleted or in the case of lengthy periods of non-use.
• When not in use, rechargeable batteries should be stored in a cool place.
• Rechargeable batteries heat up during use and may become hot. Be careful not to burn yourself when removing rechargeable
batteries. Switch the meter off or wait until it has shut itself down, and then wait a bit longer until the rechargeable battery has
cooled down.
• Do not use rechargeable batteries which show any signs of damage such as discoloration or deformation of the housing.

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Other Notes
Reproduction of product documentation or duplication of any excerpts therefrom necessitates the express consent of GOSSEN Foto- und
Lichtmesstechnik GmbH. This applies as well to duplication in any electronic format and translation into other languages.
GOSSEN Foto- und Lichtmesstechnik GmbH reserves the right to make changes of any type without providing advanced notice.
GOSSEN assumes no liability for damages resulting from incorrect use of the product.
Documentation for your GOSSEN meter was prepared with the greatest of care. If you should nevertheless discover errors, or if you would
like to suggest any improvements, GOSSEN would be very pleased to hear from you.
Symbol for separate collection of recyclable materials / hazardous waste in European countries
This symbol indicates that this product must be disposed of separately. The following must be observed by users in European
countries:
• This product may only be disposed of separately at a designated collection point. It may not be disposed of with household trash.
• For further information contact your local dealer or waste disposal authorities.
The following symbols are used in order to make it easier to find additional information.
!!
Important safety precautions: Please read these safety precautions before using the meter in order to avoid damaging your
MAVOSPEC BASE.
!
Important information which you should also read before using your MAVOSPEC BASE
i
Tips: additional, useful information regarding use of your MAVOSPEC BASE

Reference to other information included in these operating instructions
M
Individual functions which can be configured in the menu

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1 Initial Startup
The MAVOSPEC BASE works with an interchangeable micro SD card for measured
value storage and a device-specific, rechargeable lithium-ion battery.
Use only the original V070A GOSSEN rechargeable battery included with the meter,
or available as an optional accessory, and the USB charger.
Wait until your MAVOSPEC BASE has been shut down.
Unlock the lid at the back of the meter with a Phillips head screwdriver, remove it
and pull it down and away.
1.1 Inserting the Memory card
Remove the rechargeable battery from the battery compartment.
Pull the micro SDHC memory card out of the included adapter.
Insert the micro SDHC memory card into your MAVOSPEC BASE in
the recess provided for this purpose in the battery compartment.
Push the card into the slot in the meter in the indicated direction.
1.2 Inserting the Rechargeable Battery
Insert the battery into the compartment as shown in the figure. Make sure
that the + and –poles are correctly connected!
Close the battery compartment lid and secure it with the screw.
Remove the lid.
Unlock.
Insert battery.
!
The MAVOSPEC BASE can also be operated without a memory card –
all measuring and display functions are still available and only measured value
storage at the meter is excluded.
Pull Micro SDHC
card from adapter.
Insert micro SDHC card
und push into the slot.
Lock.

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1.3 Charging the Battery
Connect the included USB cable first of all to the USB port on the meter and then to the USB socket on the power pack, and then connect the power
pack to a mains outlet.
The LED in the housing top indicates the charging status of the rechargeable battery. It lights up red as long as the battery is charging, and changes to
green when the battery has been fully charged. If the meter is switched on, a symbol appears at the battery display indicating that the device is being
externally supplied with electrical power. Charging time for a fully depleted battery is about 1½ hours.
1.4 Default Settings
The MAVOSPEC BASE is shipped with default settings which, based on our own experience, fulfill the basic requirements of most users. A complete
summary of the default settings and instructions on how to adapt them to your individual requirements are included in section 4 of these operating
instructions. Entered settings are retained until they have been changed again, or until the meter is reset to its default settings as described in section 4.4.
!
When connected to a PC, the device is switched to continuous operation and is supplied with electrical power from the PC’s USB port.
The meter can be operated with or without an inserted battery when connected to a PC or to the power pack.
An additional or replacement battery (3.7 V / 890 mAh) can be purchased from GOSSEN under order number V070A.

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2The Meter and its Controls
2.1 View of the Meter
Cosine-Corrected
Measuring Probe
Charging Status LED
Display Panel
DATA Key
Ring Controller
Carrying Strap Holder
USB Port for Charging Battery or
for Data Transmission
MENU Key
Measurement Key

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Ring Controller
Up/down
Measured value view:
Report, data: scroll through the measured value list.
CIE: Switch amongst 1931 - 1960 –1976.
CRI: Switch amongst table - bar –spider.
Menu view:
Scroll through the parameters list.
Left/right
Measured value view:
Switch amongst report - CIE - CRI –data.
Menu view:
Menu item selection, parameter display,
exit parameter display
2.2 Controls
DATA Key
Press key briefly:
Storage of the last measurement,
inactive in case of automatic storage
Press and hold:
Retrieve stored measured values,
stop current retrieval operation
MENU Key
Open menu,
exit menu
Measurement Key
Measurement:
Briefly press the measurement key.
Settings:
Acknowledge selection.
Device in sleep mode:
Switch device on.
!
After switching the device
on, the settings used for the
last work cycle are
displayed.
DATA + MENU Key
Pressing and holding both of these keys
simultaneously switches the device off.

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2.3 Displays
The battery icon in the information bar shows the charging status of the battery, or indicates operation with mains power or power from the PC. Even
when the device is switched off, the charging status LED indicates whether the battery is being charged or has already been fully charged.
Icons in the Information Bar and the Charging Status LED
Battery full
Operation with mains power or at PC
Battery partially charged
LED blinks red –battery is being charged
Battery nearly depleted –charge now
LED lights up green –battery is fully charged
LCD brightness can be adjusted to meet your individual needs within a range of 50% to 100% in 10% steps. In order to further extend rechargeable
battery operating time, display shutdown time can be adjusted after which LCD brightness is automatically reduced to 50% of the selected value. Unless
the device has been fully shut down, LCD brightness is returned to its originally selected value each time a key is pressed. A complete summary of the
default settings and instructions on how to adapt them to your individual requirements are included in section 4 of these operating instructions.
Status Bar
Shows the name of the active measured
value window or the measured value
memory’s directory, and time of day
Information Bar
Shows currently running actions such as
measurement, storage, loading, the file
name and the battery’s charging status
Measured Value Window
Shows the active measured value
window or the measured value
memory’s directories and files

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3Functions
3.1 Switching the Meter On
Use the
measurement
key to switch the
meter on.
The meter
is initialized ...
… and the initial screen
appears with an empty
display field.
3.2 Measurements
Press the
measurement
key to start.
Possible from
any measured
value window.
A measurement
is triggered and
the measured
values appear
in the display
field.
Configurable Individual Functions in the MENU
M
Units of measure
lx / °C - fc / °F
Decimal separator
Comma/point
Auto int. time
On/off
Int. time
10 to 3000 ms
in 10 ms steps
Averaging
1 to 5
Auto save
On/off
Report
Display presetting
Spectrum
Color/simple
CIE standard
1931 / 1960 / 1976
CRI standard
Bar / table / spider

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3.3 Measured Value Windows
After the measurement has
been performed, its results
are displayed in the selected
measured value window.
The ring controller is used to
switch amongst the
individual measured value
windows.
The availability of the
individual measured value
windows und the parameters
they contain can be adapted
in a customer-specific
fashion in the presentation
menu (see section 4).
Individual measured value
windows or measured
values which are not
displayed can be activated
there.
A new measurement can be
triggered in each measured
value window.
Spectrum
CCT
E vis
Report
E vis
CCT
Duv
CRI
ʎpeak
ʎdominant
Purity
Flicker index
Flicker [%]
Flicker [Hz]
CIE1931
x, y
CRI
Bar graph
Ra, R9
Data
380 to 780 nm
CIE1960
u, v
CRI
Ra, Ra1 - Ra15
CIE1976
u', v'
CRI
Spider

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3.3.1 Spectrum
This measured value window displays the spectral power distribution of a light source and also provides information
concerning color temperature and illuminance. The window as well as the colored background for the spectral power
distribution can be shown or hidden with the help of the corresponding function in the presentation menu (see section 4).
CCT Correlated color temperature in Kelvin (K)
E vis Illuminance (lx/fc)
Graphic Standardized spectral power distribution (mW/m²/nm) over the entire measured waveband
3.3.2 Report
This measured value window lists all measured values calculated by the device from the measured spectral power
distribution. The window as well as the individual values can be shown or hidden with the help of the corresponding
function in the presentation menu (see section 4).
E vis Illuminance (lx/fc)
CCT Correlated color temperature in Kelvin (K)
Duv Delta uv –color temperature difference relative to the Planckian locus
CRI Color rendering index Ra
ʎ peak Wavelength (nm) of the maximum spectral radiant intensity (ʎp) – peak intensity
ʎ dominant Dominant wavelength
Purity Color purity
Flicker index Flicker index
Flicker [%] Flicker as a percentage
Flicker [Hz] Flicker frequency

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3.3.3 CIE
These measured value windows display the color coordinates in the respective CIE standard color system and depict
chromaticity graphically in the associated standard color diagram. The window as well as all or one preferred
standard color system can be shown or hidden with the help of the corresponding function in the presentation menu
(see section 4).
CIE 1931 Standard color system, graphic –chromaticity in the standard color diagram, color coordinates x, y
CIE 1960 Standard color system, graphic –chromaticity in the standard color diagram, color coordinates u, v
CIE 1976 Standard color system, graphic –chromaticity in the standard color diagram, color coordinates u', v'
3.3.4 CRI
These measured value windows display color rendering index Ra and individual indices R1 through R15 in
various formats. The window as well as all or one preferred display format can be shown or hidden with the help of
the corresponding function in the presentation menu (see section 4).
Bar graph Color rendering indices R1 through R15 as a bar graph as well as Ra and R9 as numeric values
Table Color rendering index Ra and color rendering indices R1 through R15 as numeric values
Spider Color rendering index Ra and color rendering indices R1 through R15 as a spider graph
3.3.5 Data
This measured value window displays irradiance either as original data from the sensor or as data interpolated to
even 5 nm steps. The window as well as the preferred display format can be shown or hidden with the help of the
corresponding function in the presentation menu (see section 4).
Wavelength (nm), associated irradiance (mW/m²/nm)

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3.4 Measured Value Memory
The MAVOSPEC BASE has an interchangeable micro SDHC memory card in the battery compartment to which measured values can be saved either
automatically or manually. Manual saving is selected as a default setting. The respective memory modes can be selected in the memory menu (see
section 4.6). Measured values are saved in the CSV data format, which can be opened with Excel and other programs for convenient further processing.
3.4.1 Saving Measured Values
Manual saving
Briefly pressing the DATA key saves the values from the last measurement.
Automatic saving
The value is saved automatically after measurement has been completed.
A CSV file using the time of day as a file name 10-58-22.CSV is saved to the respective day file (yy-mm-dd) 15-12-23.
3.4.2 Loading and Deleting Saved Measured Values
The memory menu is opened or exited by pressing and holding the DATA key.
micro SDHC card
yy-mm-dd
Navigate to the folder with the
ring controller.
..
hh-mm-ss.CSV
hh-mm-ss.CSV
hh-mm-ss.CSV
Navigate to the file
with the ring
controller.
Press the
measurement key.
The menu for
loading or deleting
the file appears.
Navigate to the desired command
with the ring controller ...
Load
Delete
… and acknowledge by pressing the
measurement key.
Load: The measured value appears in
the measured value windows.
Delete: The measurement is deleted.
Briefly pressing the
measurement key
opens the folder.
Pressing and holding the
measurement key accesses
the menu for opening or
deleting the folder.

18 Gossen Foto- und Lichtmesstechnik GmbH
4The Menu
This chapter expands upon the above described functions and explains the great variety of options for default settings and presets offered by the
MAVOSPEC BASE.
4.1 Overview
General
Default Setting
Options
Information
LCD brightness (%)
100
100 - 90 - 80 - 70 - 60 - 50
Sensor no.
Display off (min.)
2
5 - 4 - 3 - 2 -1 - 0.5 - off
Serial no.
Device off (min.)
4
10 - 5 - 4 - 3 - 2 - 1 - off
Software rev.
Language
German
English - German
Hardware rev.
Time/date
00:00 01.01.2015
Product ID
Settings
Temperature
Units of measure
lx / °C
fc / °F - lx / °C
Batt. voltage
Decimal separator
, (comma)
. (point) - , (comma)
Hour format
24h
24h - 12h
Date format
dd
dd.mm.yyyy - mm/dd/yyyy - yyyy-/mm/dd
Default settings
Cancel - Reset
Measurement
Auto int. time
On
Off - On
Int. time
10 to 3000 ms in 10 ms steps
Averaging
1
1 - 2 - 3 - 4 - 5
Notification
Sound
Graphic - Sound
Dark adjustment
Cancel - Execute
Memory
Auto save
Off
Off - On
Spectrum
5 nm
Off –5 nm - Original
Presentation
Spectrum
Color
Off - Color - Simple
Report
E vis - CCT - CRI -
Flicker Index - % - Hz
E vis –CCT –Duv –CRI - ʎpeak - ʎdominant – Purity –Flicker Index –
Flicker [%] –Flicker [Hz]
CIE
All
Off - All –1931 –1960 - 1976
CRI
All
Off - All - Bar –Table - Spider
Data
5 nm
Off –5 nm - Original

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4.2 Navigation –Setup
Press the MENU key to open the main menu.
Use the ring
controller ...
to select the desired
menu.
Use the ring
controller ...
to navigate through
the user settings.
Use the ring
controller ...
to select a submenu.
Use the ring
controller ...
to display values.
Use the ring
controller ...
to select the desired
value.
Use the ring
controller ...
to navigate through
the value settings.
Use the ring
controller ...
to select the desired
setting.
Use the
measurement key ...
to acknowledge.
Use the ring
controller ...
to return to the
submenu.
Press the menu key to exit the main menu at any time.

20 Gossen Foto- und Lichtmesstechnik GmbH
4.3 MENU –General
LCD Brightness (%)
Display brightness can be adjusted to suit the respective requirements. Minimal display brightness results in low
current consumption and increases availability of the meter during battery operation.
LCD brightness (%) 100 - 90 - 80 - 70 - 60 - 50
Display Off (min.)
In order to further extend battery operating time, a display shutdown time can be selected. If none of the meter’s
controls are activated during this time, LCD brightness is automatically reduced to 50%. Activation of any key returns
LCD brightness to the level selected as described in section 4.3.1. All measured values and settings are retained.
Display off (min.) 5 - 4 - 3 - 2 - 1 - 0.5 - Off
Device Off (min.)
The meter is switched off if none of the controls are activated during the selected period of time. All measured values and settings are fist saved and
are retained until the meter is switched back on again by pressing the measurement key, M.
Device off (min.) 10 - 5 - 4 - 3 - 2 - 1 - Off
Language
The meter’s menu can be set to the desired language.
Language English - German
Time/Date
The meter displays time of day in the status line and uses it as a file name for the measured value memory, which additionally uses the date as a
designation for the day file. If the battery is depleted or removed for the purpose of replacement, the integrated real-time clock continues to run for
approximately 12 hours before it stops. In order to assure that date and time are retained for as long as possible, it’s advisable to recharge the
battery after lengthy periods of use.
Time, date 00:00 01.01.2016 to 23:59 31.12.2099