Camera Section Adjustment; Test Equipment Necessary For Adjustment; List Of Charts For Camera Adjustment; Adjustment Conditions - Hitachi VM-H675LA Service Manual

2.

CAMERA SECTION ADJUSTMENT

2.1 Test Equipment Necessary for
Adjustment
Oscilloscope (dual trace) [& Vectorscope]
Digital Voltmeter (DVM)
Color Video Monitor
Adjustment Floppy Disk
Personal Computer
Personal Computer 9-pin or 25-pin (RS232C) Cable
DSP-R Jig
DSP AV Output Jig
8 - 20 Pin Extension Cable
Light Box (3100 K)
Light Balancing Filter C12
DC Power Supply (DC5 V/1 A)
AC Adapter or
DC power supply (DC7 V/3 A) and ODC DC code

2.2 List of Charts for Camera Adjustment

Table 2-1
Color Bar Chart
Gray Scale Chart
Backfocus
Adjustmant
Chart

2.3 Adjustment Conditions

1. Check that the VCR section has been adjusted
correctly before adjusting the camera section.
2. Use a light box with minimum flickering.
Control the color temperature of the light box strictly.
3. When using the video out jack to perform adjustment,
be sure to terminate the video out jack with 75 ohms.
4. Place the light box approx. 30 cm away from the
camera (lens surface) when otherwise not specified.
5. Point the camera at the chart to full the video period
when otherwise not specified.
6. Use the 10:1 probe of the oscilloscope when otherwise
not specified.
7. When "Trigger the oscilloscope internally" is specified,
set the time base of the oscilloscope to 10µs/div.
3 - 2
2.4 Preset Positions of Switches and
Resolution Chart
Controls During Adjustment
Note: Some models do not have switches (modes)
marked "#".
CAM/OFF/VIDEO switch .................. "CAM" position
SUB POWER switch ......................... "STANDBY" position
DC LIGHT switch [#] ......................... "OFF" position
DATE ................................................ Not display mode
TITLE ................................................ Not display mode
EFFECT ............................................ OFF mode
BLC ................................................... OFF mode
MENU ............................................... Not display
EIS on the MENU [#] ........................ OFF mode
PROGRAM AE [#] ............................ AUTO mode
FOCUS ............................................. Autofocus mode
FADE ................................................ OFF mode
Caution
1. Since the adjustment program is subject to change
for improvements, computer displays may be
different from those shown in this manual. In such
cases, follow the computer displays for adjustment.
2. The computer displays may be different from those
shown in this manual, depending on the destination
of models and whether or not certain functions are
provided. In such cases, follow the computer displays
for adjustment.