User guide

Gossen Foto- und Lichtmesstechnik GmbH
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6.2 Optional Accessories
- MAVO-SPOT (ordering no. M494G) Attachment
For precision spot metering of the luminance, non contact, at a distance from 34 cm to ∞, with
measuring angle of 1 degree. The ambient light is being taken into consideration in the measurement.
The light sensor is color corrected, i.e. its spectral responsitivity is adapted to the photonic vision of the
human eye. (V λ) according to DIN 5032, Part 7, Class B. The
MAVO-MONITOR with attached MAVO-SPOT is especially suited for inspecting and constancy testing
of viewing monitors in medical imaging applications according to DIN 6868/57. Other applications:
Projection screens, street surfaces and street lighting, illumination of tunnels and sport areas.
- CALCULATOR, calculating disk (ordering no. 5999V0380)
For converting the value measured with the MAVO-MONITOR into photographic shutter
speed/f-stop combinations based on the film speeds.
6.3 Calibration Certificate (Optional)
Calibration reference: Scientific Standard Lamps, type Wi 41G of the PTB (Physikalische Technische
Bundesanstalt Braunschweig – National Standard Institute of Germany). Depending on how the instrument
is being used we recommend a recalibration interval between 12 and 18 months. For this purpose please
contact our Calibration Service Department (telephone [phone]).
7 Servicing and Repairs
No special maintenance is required, if the MAVO-MONITOR is handled correctly.
Keep the outside surfaces clean. Use a slightly dampened cloth for cleaning. Do not use cleansers,
abrasives or solvents.
Should the instrument nevertheless not work to your satisfaction or if you will require repeated calibration
with Test Certificate, please send the MAVO-MONITOR to:
GOSSEN Foto- und Lichtmesstechnik GmbH
Thomas-Mann-Strasse 16 – 20
D – 90471 Nürnberg
8 Technical Data
Light Sensor Silicon photo diode with V (λ) filter
Classification Class B according to DIN 5032, Part 7 (CIE 69)
Measuring Rate 2 measurements per second
LCD display 50 mm x 25 mm
Read-out 7 segments, 3
1
/
2
digits, 13 mm
Overload signal„OL“ in the display
Memory for measurement values 100 memory locations, display indication „FLL“ = memory full
Port USB 1.1
Power Supply
Battery one 1.5 V alkaline – manganese cell, size AA (IEC LR 6) or suitable rechargeable battery
Battery life approx. 45 hours continuous operation with alcaline – manganese battery
Battery test Automatic display of „ „ symbol, when battery voltage drops below 1.0 Volts
External When the MAVO-MONITOR is connected to a PC, power will be supplied by the PC via the
USB cable.
Weights and Dimensions
Housing Plastics
Dimensions Measuring instrument: 65 x 120 x 19 mm (2,56 x 4,73 x 75“)
(without carrying case)
Measuring Probe: 31 x 105 x 30 mm
Weight Measuring instrument with measuring probe
approx. 265 g – without battery
Measuring probe Aperture: approx. 18.5 mm ∅
Sensor surface area: 6,5 x 6,5 mm
Length of cable approx. 1.5 m; available in 3m, 5m and 10 meters, on special order.
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