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8-2.
HD Free-Running Frequency Adjustment
8-2-1.
Adjustment Procedure
Tools/Fixtures
• Oscilloscope
TEKTRONIX TDS510A or equivalent
• Frequency counter
ADVANTEST TR5821 or equivalent
Preparations
1.
Turn off the power of the unit.
2.
Remove the bottom plate assembly. (Refer to Section 6-4.)
3.
Connect an oscilloscope and a frequency counter to the unit.
PDW-HD1550
TP2800
(HPR-55 board)
Connection diagram
4.
Turn on the power of the unit and the tools.
Note
Apply power to the unit and the tools to allow warm up of 10 minutes or longer
HD Free-Running Frequency Adjustment
1.
Set an oscilloscope as follows.
CH-3: DC 2 V/DIV
TIME: 100 µs/DIV
2.
Set the system of the unit to 59.94i by performing the following steps.
Before modifying settings, write down the customer's settings.
(1) Press the [MENU] button to display the setup menu.
(2) Select "013 : SYSTEM FREQUENCY SELECT MENU" by rotating the [PUSH SET] knob, and press the
[PUSH SET] knob.
(3) Select "on" using the [F4 (+)] / [F3 (-) ] buttons, and press the [PUSH SET] knob.
(4) Select "1080/59.94i" by rotating the [PUSH SET] knob, and press the [F5 (SAVE)] button.
(5) Restart the unit.
3.
Display the maintenance menu. (Refer to 4-1-2.)
PDW-HD1550
Oscilloscope
Frequency counter
CH-3
CH-3
INPUT
IN
OUT
8-2
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