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Adjustments for genlock operation – JVC RM-HP250DE User Manual

Page 23

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13

Adjustments for Genlock Operation

Genlocking is required for a system, which uses an SEG (special effects generator) as the main
signal source.

REF. : “Example of Connection with 2 Units” on page 9.

Preparations and Main Functions

Preparation

1.

Press the BARS button to output the color bar signal. The
button light should light up.

2.

Output the built-in color bar signal of the SEG from the
program connector on the front panel of the SEG. (Refer
to the INSTRUCTIONS MANUAL of the SEG.)

3.

Observing the monitor screen at the same time, adjust
the H PHASE (horizontal phase) and SC (subcarrier
phase) while using the switch on the SEG to alternately
change between color bars of the internal RM-HP250 that
of the SEG.

Adjusting the H PHASE

4.

Press and hold the MENU button for about 3 seconds until
the LCD display shows the menu display.

5.

Ensure that the cursor ( ) is located on “1: GENLOCK”,
then press the control knob to display “1A: SD H PHASE”
or “1B: HD H PHASE”
.

6.

Press the control knob to move the cursor ( ) to the cur-
rently set value, then turn the control knob to adjust the H
PHASE
value (HD: –1024 to 1023, SD: –128 to 127).
After the adjustment, press the control knob to move the
cursor ( ) back to “1: GENLOCK”.

M

FULL AUTO

F1

SHUTTER

GAIN

F2

F3

MENU/SHUTTER

GAIN

P

R

STEP

SHUTTER

MENU

PUSH-ON

DOWN

UP

VARIABLE

PUSH-ON

HIGH

LOW

MID

DOWN

UP

F4

BARS

LCD display

BARS button

MENU button

Control knob

1: GENLOCK
2: CABLE

1: GENLOCK

2: CABLE

4.

Cursor

1A: SD H PHASE

0

5A.

Item

Setting

6A.

1A: SD H PHASE

127

Cursor

7.

1C: SC COARSE

8.

1C: SC COARSE

90°

9.

1D: SC FINE

0

10.

1D: SC FINE

127

11.

STR

CMP

OFF

0 dB

ALC

LUX

● The following adjustments can be made more accurately when using a vectorscope and waveform monitor.
● Be sure to use an underscanned video monitor.
● It is not permitted to genlock the system components using a VCR playback signal.
● Before phase adjustment, wait a little for the phases of the connected components to stabilize.

NOTE

SC COARSE and SC FINE are linked.
When the upper or lower limit of SC FINE is exceeded,
the value of SC COARSE changes.
For example, when the value of SC COARSE is 0° and
SC FINE is increased, once SC FINE exceeds 127, SC
COARSE will become 90° and SC FINE will become -
128.

NOTE

1B: HD H PHASE

0

5B.

6B.

1B: HD H PHASE

1023

Screens 5 and 6 differ according to the VIDEO FORMAT
of the camera.

NOTE

11

.

After the adjustment, press the MENU button to return to
the previous display.

12

.

Press the BARS button to stop the color bar signal output.

Adjusting SC phase (Only for SD signal)

7.

Turn the control knob to display “1C: SC COARSE”.

8.

Press the control knob to move the cursor ( ) to the cur-
rently set value, then turn the control knob to adjust the
SC COARSE value (to 0°, 90°, 180° or 270°).

9.

After the coarse adjustment, press the control knob to
move the cursor ( ) back to “1C: SC COARSE”, then
press the control knob to display “1D: SC FINE”.

10

.

Press the control knob to move the cursor ( ) to the cur-
rently set value, then turn the control knob to adjust the
SC FINE value (from -128 to 127).

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