Sony XVM-R70 - 5 Electrical Adjustments; Equipment Used; Connection of Equipment; Setup for Adjustment

14
XVM-R70
SECTION 5
ELECTRICAL ADJUSTMENTS
5-1. EQUIPMENT USED
The following measuring equipment are used for these electrical adjustments:
• Oscilloscope
• NTSC pattern generator
• Stabilized power supply
• Digital voltmeter
• Frequency counter
5-2. CONNECTION OF EQUIPMENT
Unless otherwise specified, the equipment should be connected as shown below.
5-3. SETUP FOR ADJUSTMENT
The 10-step gray scale signal from the NTSC pattern generator is used as an adjustment
signal for V COM voltage/position adjustment as well as VIDEO adjustment.
10-step gray scale signal (with burst), 1Vp-p, 75 Ω
VIDEO OUT
(75 Ω)
NTSC pattern
generator
main board
TP507(+)
TP500(-)
monitor
XVM-R70
connection box
XA-115
stabilized
power suppl
y
14.4 V
GND ACC BATT