Nikon D3 VBA18001 Repair Manual page 95

Brightness adjustment
Usually default value is set and adjustment is not necessary.
If some problem is found with brightness by visual check, adjust and correct it by "+/-" button.
(12) O��ai� refere�ce va�ue
・Sensitivity reference value calculation
On condition of ISO200, using the tool lens (F5.6), the reference body is faced to the color viewer (LV13
equiv.) with the ND filter (-6 step) being put between them. Then, the G output average value of (425 pixels
× 425 pixels), which was deviated from the center by 425 pixels, is stored in the D3BSD.DAT file as the
sensitivity reference value.
・Sensitivity ratio reference value calculation
Using the tool lens (F5.6), the reference body is faced to the shutter tester (LV 9 equiv.). Then, the sensitivity
ratio reference value GR and GB are calculated and stored in the D3BSD.DAT file, based on the G/R/B
output average of (425 pixels × 425 pixels), which is deviated from the center by 425 pixels.
・Sensitivity/sensitivity ratio reference value calculation
Using the tool lens (F5.6), the reference body is faced to the color viewer (LV 13 equiv.). Then, measure the
level of sensitivity and sensitivity ratio, and the result is stored in the D3BSD.DAT file.
It is necessary to calculate the reference values in order to prevent the color temperature fluctuation caused
by the shutter tester or color viewer's changes over time from affecting the results of the shooting image
adjustment. By using the reference body, calculate the reference values once in about every 3 months, when
either of the fluorescent of the color viewer or tool lens (F5.6) or ND filter (ND8X2) is replaced.
(13) I�i�ia� se��i�gs (Fac��ry defau�� se��i�gs)
This restores factory default settings. Select the language and video mode. Because this setting of RP DG-
PCB is blank, be sure to set the initial default setting when the DG-PCB is replaced.
(14) Confirm data
Saving/restoring of the system fixed values, image register, TFT register, EEPROM1, 2, 3.
The functions of saving/restoring each data is for sending backup data to Service Planning for analysis, if
some problem occurs.
(15) Versi�� N�./ Seria� N�.
RISC firmware version and serial number are indicated. Serial number can be written.
※ Whenever the license sheet is replaced, be sure to input the serial number.
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VBA18001-R.3719.A