Hitachi FP-Z31 Operation Manual page 18

. . . . :. ;
(3) Video signal check
A color picture is obtained from the CAM OUT connector when the CAM/BAR selector switch
to CAM and the filter disc is set to "1 ". Check the white balance and black balance as follows:
(a) Set the GAIN switch
(b) Set the filter disc
Refer to Table 6.1 for the filter disc positions and their uses.
Filter disc
number
1
2
3
4
(c) Shoot a white object so that it fills the screen. (Take care not to allow reflections from the light source
or strong reflected light to shine on the object.)
(d) Now·set the AUTO WHT/AUTO BLK switch
I ·.
several seconds. Check: Once the white balance has been set, the "AUTO WHITE: C OMPLETED"
'display (FP-Z31 only) appears on the viewfinder screen. For about 5 seconds after the white balance
has been set: the ''W" indicator inside the viewfinder lights up (FP-Z31 L only).
(e) Set the AUTO ·wH ITE/AUTO BLACK switch
5 seconds and the black balance is obtained. After setting the auto black, set the white balance again
by carrying out steps (c) and (d).
This completes the setting ot'the white balance and black balance. Both are held in the memory even
when the power is switched off and sq there is no need for resetting for intermittent use. Resetting is
required, however, under the following conditions:
( i ) After removing or replacing the ASU unit
( ii ) When the back-up battery has discharged completely
This camera uses a lithium battery for memory back-up. It will discharge in about four months to 2
years and the memory contents will no longer be stored and held. When this happens, replace the
battery following the procedure outlined in section 6.1.5. Even when the memory back-up battery has
completely discharged, the camera can still be operated normally by setting the auto black and auto
white balance again in the operational mode.
(iii) When the color temperature of the lighting has changed
The white balance shifts when the color temperature of the lighting changes in cases where the camera
is being used outdoors or under similar circumstances. In such cases, reset the white balance in line
with the color temperature of the lighting.
o
Auto white balance setting
Proceed in accordance with steps (c) and (d) for setting the auto white balance. If a big white object
that fills the screen is not available, the auto white balance can be set if the following three conditions
are satisfied:
.. .... . . ;:·- . .
•:
@
to O dB.
@
to the position corresponding to the color temperature of the lighting source.
lighting source color
temperature
3,200 K
5,600 K + 1/8 ND
5,600 K
CAP
Type of lighting source
Tungsten or halogen lamps
For outdoor uses when ND filter
is � equ ired (too bright)
For outdoor uses (except
When camera is not being used
Table 6-1
@
to the top position. The white balance is set in
@
to its bottom position. The lens iris closes for about
®
is set
u.
"2")
( 1)
(2)
(3)
No
No
( 4 ) Tr
Retu rr
�:; focus c
readjui
point
R/G/8