Tektronix LumaColor II J18, Instruction Manual

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Tutorial
J18 Photometer Instruction Manual 2–9
Factory-stored reference values for video display white levels are
stored in memory locations 12 to 19. Use these values to adjust
displays to 6500 K white at standard luminance values. Refer to
Table 2–1 for luminance values and memory locations.
Table 2–1: Factory Preset 6500 K White Values
Memory
Location
fL cd/m
2
12 5 17.1
13 15 51.4
14 20 68.5
15 25 85.7
16 30 103
17 35 120
18 40 137
19 50 171
The factory-stored reference levels support all units and coordinate
systems.
To take differential measurements using the factory-stored reference
values, perform the following steps:
1. Press the DIFF/REF button to select the differential measure-
ment mode.
2. Repeatedly press the DIFF/REF button to step to the desired
reference memory location.
3. Press the HOLD/RUN button to exit the differential mode.
4. Select the desired units and coordinate system using the UNITS
and ALT DISP buttons.
5. Press the DIFF/REF button to display the difference measure-
ment using the reference value selected in step 2.
Tutorial
J18 Photometer Instruction Manual 2–9
Factory-stored reference values for video display white levels are
stored in memory locations 12 to 19. Use these values to adjust
displays to 6500 K white at standard luminance values. Refer to
Table 2–1 for luminance values and memory locations.
Table 2–1: Factory Preset 6500 K White Values
Memory
Location
fL cd/m
2
12 5 17.1
13 15 51.4
14 20 68.5
15 25 85.7
16 30 103
17 35 120
18 40 137
19 50 171
The factory-stored reference levels support all units and coordinate
systems.
To take differential measurements using the factory-stored reference
values, perform the following steps:
1. Press the DIFF/REF button to select the differential measure-
ment mode.
2. Repeatedly press the DIFF/REF button to step to the desired
reference memory location.
3. Press the HOLD/RUN button to exit the differential mode.
4. Select the desired units and coordinate system using the UNITS
and ALT DISP buttons.
5. Press the DIFF/REF button to display the difference measure-
ment using the reference value selected in step 2.