The Jeti 1501 is a compact Spectroradiometer that delivers high quality results, with very accurate measurement capabilities on all display devices.
- ColourSpace Integration
- 6+mm Spot Size
- ±0.5nm Spectral Accuracy
- 4.5nm Spectral Bandwidth (2nm HiRes version)
- 0.1 to 100,000 cd/m2
- Laser Pointer Alignment
The Jeti spectraval 1501 is fast and highly sensitive, covering the wavelength range from 350 to 780nm, and includes an internal target spot laser for alignment. A piezo-electric shutter provides dark signal compensation.
The spectraval 1501 is provided without a Cosine Diffuser as standard, as for display calibration use this is unused. The diffuser can be specified when ordering if required.
The HiRes version is approx. 6x slower.
- Spectral range: 380nm - 780nm
- Optical bandwidth: 4.5nm
(HiRes 2nm - approx. 6x slower reading speed)
- Wavelength resolution: 1 nm
- Digital resolution: 16 Bit ADC
- Viewing angel: 1.8°
- Measuring Area/Distance: Ø6mm/20cm; Ø31mm/100cm
- Measuring range: 0.2 - 140,000 cd/m2 @ typical warm white LED
- Luminance accuracy: ± 4.4% @ 100 cd/m2; illuminant A, k=2
- Luminance repeatability: ± 1% @ illuminant A
- Chromaticity accuracy: ± 0.002 xy @ illuminant A
- Color repeatability: ± 0.0005 xy @ illuminant A
- CCT repeatability: ± 20K
- Wavelength accuracy: ± 0.2nm; HgAr line source
(HiRes ± 0.3nm)
- Polarization Error f8: < 2%
- Dispersive element: Imaging grating (flat field)
- Light element CCD array: 2048 pixel
(HiRes: 4096 pixels)
- Power supply: Battery & USB powered
- PC interface: USB 2.0 fullspeed & Bluetooth
- Dimensions: 140mm, 80mm, 70mm
- Weight: 400g
- Operating Temperature: 10-40°C
- Operating Humidity: < 85% relative humidity at 35°
- Calibration: NIST traceable
- Recommended recalibration: 1 year
- USB Cable
- Instructions, LiVal Software, SDK on Bluetooth stick
- Battery charger & Trigger connection
- Carry Case
- Calibration certificate
- Cosine diffuser (optional ~ £520)
- Straylight protection tube (optional ~ £165)
Cosine Diffusers must be calibrated with the unit. If a Cosine Diffuser is purchased after the unit has shipped from the factory the unit must be shipped back to the factory in order to get the added accessory properly calibrated with the unit.
The spectraval 1501 should be factory recalibrated/re-certified every year to two years, depending on usage and storage, or when obvious issue are found (after physical shock to the probe for example).
Cost is €709 Euro, plus shipping for wavelength + 1 measuring mode recalibration.
Contact Jeti to schedule recalibration/re-certification.
Straylight Protection Tube
spectraval 1501 Alternatives
Light Illusion can supply any Jeti spectraval 1501 probe, or optional accessories.
- spectraval 1501 HiRes - 2nm (approx. 6x slower)
- spectraval 1501-LAN - Addition of LAN interface
- spectraval 1501NIR - 350 nm to 1000 nm
- spectraval 1501 focus
- Any Accessories
As with all probes, operation and function is controlled via the Probe Options menu, accessed via the Profiling window, with the left-hand side of the menu providing generic probes settings, and the right-hand side settings specific to the spectraval 1501.
Sync Frequency defines the sync frequency of the probe, with Auto being the default, although Manual can be used if the refresh rate of the display is known.
(If the Jeti shows an adoption error, the frequency will need to be manually set to the video frame-rate.)
Calibration Settings provides generic probe settings.
Average Low Light
Average Low Light is a probe generic option, that averages multiple readings in low-light situations using an advanced algorithm built into ColourSpace. The algorithm varies based on the probe in use to provide the best possible results.
Enable Visible Feedback
Enable Visible Feedback enables the inbuilt laser pointer, assisting with probe alignment when profiling screens from a distance.
Probe Adjustments are generic probes settings, with consistent operation regardless of the probe in use.
Probe Matching is used to match a Tristimulus to a Spectroradiometer, increasing the profile accuracy.
There are two different methods available for probe matching - 4 Colour Volumetric Matching (FCVM), and Multi-point Volumetric Matching (MPVM).
ColourSpace doesn't use the older, traditional, 4 Colour Matrix (FCMM) Method for probe matching, as the volumetric approach offers far greater probe matching accuracy.
Probe Offset enables a user to manually enter offset values for different probes/display combinations.
Perceptual Colour Match is a preferable approach.
Extra Delay sets a delay time after the patch has changed before probe measurement starts, and can be set automatically via the Auto button, and manages signal path delays in the image pipeline.
When using the Auto option, Average Low Light should not be enabled.