CAMERA LINK FS5000HECL, Instruction Manual

Page: 9 / 39

M08627;9/39
- 9 -
(4-4) Input of external synchronous trigger signal(Ext-HD/VD)
● How to input external synchronous trigger signal
When more than one cameras are used in synchronization state, it is necessary to input external synchronous signal
(Ext-HD/VD signal) from user side equipment. When it is needed to synchronize horizontal timing, input HD signal.
Input HD and VD signals to synchronize both horizontal and vertical timings.
(Note) Note that the delay jitter may occur between externally supplied HD signal and HD signal within the camera, when
horizontal operation timing is synchronized by external synchronous signal,
(Note) When in asynchronous mode, only the HD signal is effective as an external sync signal. In that case, VD signal is
neglected. Normally, do not apply VD external sync signal in asynchronous shutter mode.
● Recommended external sync signal
HD
VD
Th Tlh
Tlv
※
Tv
Parameter
Scan mode Th Tv Tlh Tlv VD
↓
/ HD
↓
phase error
Normal scan mode 97.11
µ
s ±1 % 2056 × Th 0.1 × Th ±10 % 9 × Th 0 ±1.0
µ
s
Partial scan mode
↑
1028 × Th
↑ ↑ ↑
Draft scan mode 112.37 µ s ±1 % 249 × Th ↑ ↑ ↑
[Important]
(Note) Make sure to follow the conditions of “Recommended external sinc signal”. If the signals of incorrect timing or
incorrect level are input, troubles may be caused.
(Note) When the camera is used in the asynchronous shutter mode / double pulse mode, set the camera operation mode
to double pulse mode (“2 TRIG-ENABLED”) before the trigger signal is input to TRIG-A,TRIG-B. If the trigger signal
is input before the camera is set to double pulse mode, the camera may malfunctions as if external sync signal is
applied at abnormal timing.
● Example of external sync input circuit and drive circuit
Camera
c onnector
Inside the c amera
To internal circuit
１０ Ｋ
Ｔ ｒ
１ ０Ｋ
４ ． ７ Ｋ
3.3V 3.3 V
22µ F
２ ２ ０ O
１ ００ｐＦ
７ ５Ω
Example of user circ uit
74AC04 or
others
ＶＣＣ
Vccis
+
5V or
+
3V
※
The Vi nt si gnal should not include unnec essary
nois e components s uc h as chattering.
Ext-VD 7
Ext- HD 9
(4-5) Other input/output circuit
● Strobe signal output circuit
The internal output circuit is shown in the
right figure.
(4-6) Strobe signal in continuous shutter mode
Although conventional cameras output the strobe signal (STRB) only in the asynchronous shutter mode, this equipment is
capable of outputting the strobe signal even in the continuous shutter mode by changing the settings.
The default setting is OFF (no strobe signal in continuous shutter mode). This setting can be changed on the configuration
menu (Operation Mode Setting Group C) or by way of rewriting the configuration register with serial communication
commands.
+5V
100
6.8V.ZD
Strobe signal: Pin 11 of
camera connector
From internal
circuit
74VHCT04A
(or equivalent)