List Operation - ITech IT8300 Series User Manual

Press the [Esc] key on load front board (or send command PROTection:CLEar),
the load front board (OTP) word will get cleared and the load will exit OTP
protection status.
AC protection(ACP)
AC protection includes overvoltage protection, undervoltage protection,
overfrequency protection, underfrequency protection and overcurrent
protection. The load will be immediately OFF and the buzzer will sound if the
voltage, current and frequency at the inverse AC terminal are not within rated
range. ACP related error information will be displayed on the screen of the load
till resetting.
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The error information can be cleared manually, but can not be cleared within 5
seconds of the instrument's self-test, and the instrument is in standby state. If
there is still error information after manual removal, the instrument will cycle the
self-test again.
Clear AC protection:
Except Iac_OC protection, when the grid is recovered, press the [Esc] key on
load front panel (or send command to PROTection:CLEar), the load front panel
(OVP) word will get cleared and the load will exit ACP protection status. Under
Iac_OC protection, the instrument needs restarting to exit protection status.
Under ACP status, the user can press [Shift]+[CR] (AC-Meter) key to enter the
power grid information interface to check grid voltage and frequency.

3.17 List Operation

LIST mode provides an accurate, fast and low-cost way to complete any
complicated current change mode, which enables synchronization of internal or
external signals in multiple quasi-bit load precision tests.
When different trigger sources are selected, the LIST function will form a variety
of complex sequences by editing step value, pulse width and slope of each step
to meet complicated test requirements. LIST parameters comprise designation
of input list file, input step count (2-84 steps), step time (0.01s – 3600s) as well
as setting value and slope of each step. The list file can be stored in
non-volatile RAM available for a quick output in case of usage. The user can
edit 7 groups of list files at maximum.
If the load operation mode is at List operation, the load will start List operation
when it receives a trigger signal till completion or receipt of another trigger
signal.
Before List operation, be sure to edit List operation files and save them in load
non-volatile RAM. Refer to examples below to know how to execute List
operation through board. It is assumed that output voltage and current of the
tested instrument are 10V and 3A respectively and the load is under CC mode.
VacH: Grid voltage is too high
VacL: Grid voltage is too low
FacH: Grid frequency is too high
FacL: Grid frequency is too low
Iac_OC: Grid current is too high, OCP
Copyright © ITECH Electronics Co., Ltd.
Function and Features
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