NAC Image Technology MC-529, User Manual

Page: 70 / 180

(00235) 3-18
3.2.13 External Trigger Signal Selection (TRIG SEL)
While in the STOP mode, the external trigger signals can be set from the SYS MENU on the J-PAD3.
The method of inputting the recording trigger signals can be performed by operating the special remote
control J-PAD3 or via external trigger signal input from the TRIG1 connector on rear panel or the J3 cable
TRIG2 connector.
1) While in the STOP mode, press MENU to display the
TOP MENU.
2) Select "TRIG SET" from the TOP MENU using the arrows
and press SET to display the TRIG SET
sub-menu (Figure 3-28
）
.
3) Select "TRIG SEL" and use the arrows to select the
external trigger signal.
TRIG1 Valid external trigger signal from TRIG1 connector
TRIG2 Valid external trigger signal from TRIG2 connector
External trigger signals from the J1 cable TRIG1 connector and the J3 cable TRIG2 connector cannot be
used simultaneously.
The polarity of the external trigger signals from the TRIG1 connector and TRIG2 connector can be set.
Refer to
【
3.2.16 Selecting Polarity for External Input/Output Signals
】
3.2.13.1 External Trigger Signals from TRIG1
External trigger signal from the TRIG1 connector is input into the MEMRECAM GX-3 via TTL input or
contact input. Refer to
【
7 Specifications
】
for details.
The advantage of using these signals is the ease of use and with contact input, connection is possible
between one switch and two wires. It is recommended that this be used in a clean environment where there
is no external noise. Please be aware that the voltage tolerance range is quite narrow
（
-0.5
～
5.5Vdc
）
3.2.13.2 External Trigger Signals from TRIG2
External trigger signal from the TRIG1 connector is input into the MEMRECAM GX-3 via current loop
input by the photo coupler. Refer to
【
7 Specifications
】
for details.
The advantage of using these signals is the excellent noise resistance and the application for long
distance cables. It is recommended that this be used in an environment where noise, such as static is often
generated. However, an external power source is needed to use this input.
3.2.13.3 Filter Value Setting
If trigger is ON by noise throgh an external trigger signal line, set the value of the noise filter to avoid
mis-trigger. Please refer to
【
3. 2.17 Trigger filter setting
】
for details of the setting procedure.
Figure3-28 TRIG SEL(TRIG SET)