Over Temperature Protection (Otp); Reverse Voltage Protection (Lrv/Rrv); Save And Recall Operation; Automatic Test - ITech IT8700 Series User Manual

will be set and they will remain until they are reset.
Operations to clear the OPP state:
Check whether the input power is in the rated power range or the programmed
protecting ranges. If it is outside the range, please disconnect the instrument
under
commandPROTection:CLEar), the (OPP) displayed on the front panel will
disappear, load exits OPP protection state.

4.11.4 Over temperature protection (OTP)

When load's internal circuit temperature is over 85℃, load will enable OTP.
Input will automatically turned off, VFD display OTP. At the same time the OT
and PS bits in the status register will be set, they will remain until they are reset.
Operations to clear the OTP state:
when load temperature dropped to the protecting point, press any key on the
front panel(or send command PROTection:CLEar), the (OTP) displayed on the
front panel will disappear, load exits OTP protection state.

4.11.5 Reverse voltage protection (LRV/RRV)

Once in reverse connection condition, input will be immediately turned off,
buzzer alarm, status register's (RV/RRV) and (VF) bits will be set, main frame
screen displays (LRV/RRV), they will remain until they are reset.
In this condition, the 8 pins connector's VF pin will output a low level, which can
disconnect the external DUT.
Operations to clear the reverse voltage state:
Check whether the connection is reversed. If so, disconnect the object to be
measured.

4.12 Save and recall operation

The stored setting of all channels can be recalled, the stored parameters
includes working mode, voltage/ current value, slew rate, transient setting and
so on. It can save up to 101 groups of setting parameters. The 0
used as boot parameters. The 1
testing parameters. All the parameters are saved in the nonvolatile memory,
won't lose even in power down state. You can use SAVE key to save
parameters, press RECALL key to fast recall.
Save and recall operations
1. After setting the parameters, press
press
Save Group
2. Press
Recall Group

4.13 Automatic test

Automatic test function of IT8700 series electronic load is very powerful, it can
simulate various tests. It can edit up to 10 groups of testing files, each file has
10 steps, it can edit up to 100 files which can be saved in EEPROM (address).
test. Press any
Enter Enter
to confirm
0
Recall Recall
key , press
0
Copyright © Itech Electronic Co., Ltd.
key on the front
st th
to 100 groups can be used as automatic
Save Save
key to save, press number 9,
9 9
, to recall the saved data
Operations introduction
panel (or send
th
group can be
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