34
1.
From the CONFIG menu, browse and select BNC-Set and press
Enter
Enter
.
2.
On the following screen, select between I-Trigger, I-Ri, O-Sync, or O-On. Then press
Enter
Enter
to confirm.
-
I-Trigger: Select this option to configure the BNC port as an input trigger to start
or stop a list.
Note: In order to externally trigger a list, List-Set option in the CONFIG menu
must be set to Trigger. See “Configure List Setting” for details.
By default, the BNC port has an open-circuit voltage of 5 VDC. A trigger is
registered when an external TTL logic signal is sent. The instrument triggers off a
falling edge from logic high (5 V) to low (0 V).
A negative TTL level pulse signal with pulse width > 50 µs can be used as a trigger,
as illustrated below:
-
I-Ri: Selecting this option will configure the BNC port as an input to control the
On/Off state of the main AC output. It can be used as an emergency soft output
switch to quickly configure the output to 0 V, 0 A. To control the output, follow
the steps below.
1.
Press
On/Off
to turn ON the main AC output. The green backlight
should be illuminated.
2.
To keep the output turned ON, leave the BNC port open. To turn the
output OFF, short the BNC port. Refer to the diagram below.
5V
0V
>50µs
V
s
Trigger
Figure 22 - TTL Pulse Width
