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3-2  Reference Sync Signals

  Chapt

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 3

  Pre

par

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This section describes how reference signals for the video 
output signals and servo system are selected.
The output from the internal reference video signal 
generator is supplied to the output video signal and servo 
circuits as a reference signal.

The reference sync signal selection switches automatically 
between REF and INPUT depending on the menu settings 
and the operating status of the unit, as shown in the 
following table.

a) EE: In E-E mode

PB: Playing back (normal playback, jog mode, shuttle mode, variable 

speed mode and stop mode) 

EDIT: Edit preset enabled 
REC: Recording

• When there is no HDSDI signal input whereas INPUT is 

selected, the unit synchronizes with the REF signal.

• When there is no REF signal input whereas REF is 

selected, no external reference signal is used. In this 
case, the unit synchronizes with the internally generated 
reference signal.

Connect reference signals as shown below, according to 
the way in which the unit is to be used.

–

EXT

NORMAL EE

REF

PB

EDIT

REC

INPUT

EE

INPUT

PB

REF

EDIT

REC

REF

AUTO1

NORMAL EE

PB

EDIT

REC

INPUT

INPUT

EE

PB

REF

EDIT

REC

INPUT

INPUT

–

EE

PB

EDIT

REC

REF

AUTO2

NORMAL EE

REF

PB

EDIT

INPUT

REC

INPUT

EE

PB

REF

EDIT

INPUT

REC

INPUT

–

EE

PB

EDIT

REC

HDSDI
INPUT

REF. VIDEO
INPUT

 75

Ω termination 

switch: ON

Reference signal

Switcher or signal generator

HDW-1800/D1800