Topcon BM-7A - Page 32

2. Measurement Operation
30
The procedure of measurement for correction between instruments using the Direct Correction
function is as explained below.
1 Set beforehand the data output method and communication method for the reference
instrument in reference to the table below. Then connect it with the BM-7A to be
corrected using a specified cable. Also, set the RS-232C parameter settings of the BM-
7A to be corrected are the same as those of the reference instrument.
Reference
Luminance
Colorimeter
RS-232C Cable Data Output Method Communication type
SR-3 Straight CS900 Program
SC-777 Interlink CM-700 Type RS-232C
BM-7A Interlink FACTOR B RS-232C
2 Set dip switch 5 of the BM-7A to be corrected to the FACTOR B side, and turn ON the
power.
3 Turn on the power to the reference luminance colorimeter.
4
The BM-7A to be corrected changes to the function mode, and the [*Direct-Correction
Factor*] screen is displayed.
Moving to the Function Mode
☞
「3.1.1 Moving/Returning to the Function Mode」
Display Method
☞
「3.1.2 Data/Setting Items Display」
5 Press the [CHANGE] button.
6 Press the [ROTATION] button, and select "Measure Reference" ("*" is displayed) and
press the [ENTER] button.
Measure Reference : Perform measurement using the reference instrument, and write
the measurement data in the BM-7A to be corrected.
Measure Factor : Perform measurement using the BM-7A to be corrected, then a
correction factor is calculated based on data found in the
"Measure Reference".
All Factor Clear : Clear the correction factor and measurement data found above.
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