FTP9000 Series Programmable DC Power Supply Operation Manual
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3.7.2 External Control
FTP9000 series power supply analog interface provides an input “INHIBIT” for trigger signal, as shown below:
Figure 3-9 Trigger Signal Connection
This “INHIBIT” port receives 5V TTL level signal, low level is effective. You can use a physical switch such as "Figure
3-9 Trigger Signal Connection" or a 0~5VDC signal source for triggering. Closed or 0V is low level, open or 5V is
high level. The port response time is about 20 milliseconds, and can be set to Trigger, Toggle, Hold three
behaviors.
Trigger
: Default setting. Used as trigger signal. The port detects a valid low-level pulse, that is, a trigger signal is
received.
Toggle
: Used as power supply output ON/OFF control signal. The output ON/OFF is switched once when the port
detects a valid low-level pulse. Same effect as you press
once on the front panel.
Hold
: Used as power supply output ON/OFF control signal. Output is turned ON when the port detects a valid
low-level signal; turned off when the port detects a valid high-level signal.
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Keyboard control, external control and System Bus control take effect at the same time and
work together.
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Operation:
1. Press
to enter the main menu.
2. Select “SET” >> “Ext Prog” and press
to enter external programming page as shown in Figure 3-8.
3. Select “EXT-S”, you can configure among “Trigger”, “Toggle”, or “Hold”. Default setting is “Trigger”.
Summary of Contents for FTP9000 Series
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