Panel function introduction
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Timer trigger mode
When select timer trigger mode, first set the trigger source as TIMER, set the
TIGGER TIMER's time, the load will produce a signal from time to time.
Trigger HOLD mode
When select hold trigger mode, first set trigger source as HOLD, the load will
produce signal when get the TREG: IMM command.
NOTE
Pin 2 will output corresponding trigger signal whatever trigger mode you choose.
3.4.2 External ON/OFF control connection
Figure 3-6
ON/OFF IN is used to control the multi-channel to take load or unload
synchronously. When ON/OFF IN pin receives a low pulse, ON/OFF state of
load will reverse. If Sync On Set of a specific channel is set ON, then you can
use figure 3-6 connection to control its ON/OFF state.
ON/OFF OUT indicates ON/OFF state of multi channels electronic load. If Sync
On Set of any specific channel is set on, and the channel’s input state is on, the
pin 4 output low level, otherwise it output high level.
3.5 Extended frame connections
The following section introduces extended function of IT8702 mainframe. Take
example of IT8702, the introduction is as follows.
Figure 3-7 Expand interface
This interface can be used to connect extended frame. IT8702 can take up to
16 channels with IT8703.
IT8701P can take up to 12 channels with extended frame and IT8702P can
take up to 16 channels with IT8703P.
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