34
External Sync
7. 6
When using the unit with an external sync signal, input HD and VD to CC3 and CC4 of the DIGITAL terminal.
When the external sync signal is input, the camera automatically switches its sync from the internal sync to the
external sync.
The operation is as shown below, depending on the unit’s status and how external sync signals are input.
Shutter mode
HD input
VD input
Note
At time of SYNC-NON
RESET mode
N
N
Internal sync mode
Y
Y
External sync mode
N
Y
Only V reset is applied due to VD input. Normally not used.
Y
N
HD is synchronized to external, but video is not output
because
there is no VD input. Normally not used.
At time of SYNC-
RESET mode
N
*
Internal sync mode. The presence of VD is ignored, and after a
specified time after a trigger input, V reset is applied.
Y
*
HD is synchronized to external. The presence of VD is ignored,
and after a specified time after a trigger input, V reset is applied.
At time of reset restart
Y
Y
HD is synchronized to external. Video is output due to VD input.
N
Y
HD is synchronized to the inside of the camera. Video is output
due to VD input.
*
N
Video is not output because there is no VD input. Normally
not
used.
At time of manual
shutter
N
N
Internal sync mode
Y
Y
External sync mode
Y
N
HD is synchronized to external. Normally not used.
N
Y
Disabled
*
Either Y or N is permitted.
External sync signal polarity
( 1 )
HD: 2 to 5V(p-p) Negative
VD: 2 to 5V(p-p) Negative
External sync frequency range
( 2 )
(External sync with HD, VD)
Within ±1% (at horizontal sync frequency of 23.229 kHz)
Using the unit with external sync signal
( 3 )
When adjusting H (horizontal) phase refer to the item “7.2 (6) (6.1) Adjusting horizontal phase”.
H (horizontal) phase adjustment
(3. 1)
Observe the external sync signal and the LVAL signal output waveform
of the unit with a dual trace oscilloscope, and adjust H phase so that
the H phases match.
External
Sync. signal
Match
the phase.
LVAL signal
output
120730c1_IK_TF7P2_EN.indd 34
12.7.30 1:19:05 PM
