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> Topcon bm-7 luminance colorimeter spectroradiometer BM7
Topcon bm-7 luminance colorimeter spectroradiometer BM7
TOPCON BM-7 LUMINANCE COLORIMETER SPECTRORADIOMETER BM7
- Widely used in measuring luminance and chromaticity of LCD and CRT s
- 3 element silicon photodiode detector
Variable aperture selections of 2 , 1 , 0.2 , 0.1
Eyepiece lens adjustment range: 5 diopter
Spectral Sensitivity Characteristics:
Similar to CIE 1931 color matching functions
3-Element Silicon Photodiode (X2, Y, Z)
BM-7 (approx. 2 sec), BM-7 FAST (approx. 0.5 sec)
Candela per square meter (cd/m2), Foot-Lambarts (fL) selectable
Luminance: 4% of display value (for light source A, 23 C measuring field 2 , 1cd/m2 or above, autorange)
Chromaticity: (x, y) within 0.002 for standard source A, within 0.01 (O-55, Y-48, T-44, A-73B, IRA-05), within 0.03 (R-61, B-46, V-44, G-54)
(Standard light source A+ color filter)
(23 C measuring field 2 , 1cd/m2 or above, autorange)
Select either the Topcon calibration standard (Standard light source A, 23 C, 3 , below 65% RH) or the user s calibration standard
LCD 20 digits x 4 lines with illumination function
GP-1B or RS-232C interface is selected at the time of purchase (*external computer control is possible)
Analog voltage output proportioned to X2, Y and Z
Response speed varies from 1 to 30 ms depending on the range used
AC adapter (standard accessory)
External Battery (special accessory)
325 (L) x 120 (W) x 165 (H) mm
In Original Case with Accessories shown
The unit is used and in good physical condition (see photos).
It could be powered up as shown.
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