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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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Safety Precautions, Warnings and Other Notes
Inserting the Memory Card
Inserting the Rechargeable Battery
The Meter and its Controls
Saving Measured Values to Memory
Loading Stored Measured Values

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Documenting Measured Values
EU Declaration of Conformity

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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.
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
Tips: additional, useful information regarding use of your MAVOSPEC BASE
Reference to other information included in these operating instructions
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.
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.

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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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2 The Meter and its Controls
2.1 View of the Meter
Cosine-Corrected
Measuring Probe
USB Port for Charging Battery or
for Data Transmission