Other System Settings - East Tester ET5406A+ User Manual

ET5406A+/ET5407A+ Programmable DC Electronic Load - User Manual
OP Over Power Protection
OT Over Temperature Protection
RV Reverse Polarity Prompt
Note: There's only a prompt for reverse polarity, without any protection.
10. Qualification Test Operation
The Qualification Test operates in non-list mode. Once this feature is enabled, it can continuously
monitor whether the current test is within the set limit range on the main interface in basic
measurement mode.
If the test is within the range, the "OK" icon will be displayed continuously, indicating that the
data is qualified.
If the test exceeds the range, the "OK" icon will flash and the Buzzer will sound, indicating that
the data is not qualified.
Note: When the Buzzer is deactivated in the system settings, it will not sound even if the data is
not qualified.

11. Other System Settings

11.1. Keyboard Lock Feature
Once the protection/prompt feature is triggered or the newline character ('\n', i.e. 0x0A) is
received from the SCPI command, the "LOCK" icon will be displayed on the interface, indicating
that the keyboard is locked. Press the [ENT] button briefly to unlock the keyboard.
11.2. Communication Port and External Interface Feature
The USB communication port comes as standard, with RS232 and RS485 as optional features
(Users can choose either one).
The back panel of the device is provided with a USB communication port and a 6P 3.81mm
pluggable terminal, as defined in the figure below.
Fig. 11-2-1 Communication Port and External Interface
USB ： A square-ended USB for Type-B socket. It can be recognized by the computer as a
COM port and need to be provided with a CH340 driver.
R1：Run1, OC output port, requires external pull-up resistor and pull-up level, with a level
range of 0-50V.
In LIST mode, if the test is in progress, the level is low; otherwise, the level is high.
P1：Pass1, OC output port, requires external pull-up resistor and pull-up level, with a level
range of 0-50V.
Input power exceeds the power limit (detected
for over 20ms)
The temperature of the heatsink exceeds 85°
Input polarity is reversed