User Manual

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Parity: N (None), E (Even), O (Odd)
Stop bit: 1
Flow control: NONE, CTS/RTS, XON/XOFF
Note: The default is 4800, 8, N, 1, NONE.
*Setting the baud rate to 115200 may provide unstable results during remote communication. Select a lower baud rate
if communication errors occur.
1. All serial settings must match with the settings congured on the PC in order for communication to link successfully.
8.5.11 CONFIG Menu
All setup procedures and settings explained in this section are accessed from the CONFIG
menu. To access this menu, press ) and ( ). The following screen will show:
8.5.11.1 Von Operation
The Von voltage value is set to control the voltage turn on state for the electronic load. When the input voltage exceeds
the Von voltage value, the electronic load’s input state turns on.
This function can protect a DUT when its voltage goes below a specied level. For example, when testing a power
supply’s discharge characteristics, you can set the Von voltage level start and stop discharging of the power supply.
Note: Von Operation will have a short delay (< 1 s) from when a condition exceeds or goes below a specied level to
when the load’s input state changes.
When Von Latch is ON, the electronic load will begin sinking current if input voltage exceeds Von voltage. When the
input voltage drops below the Von voltage value, the electronic load will stop sinking current and the input will turn o.
Figure 15 - The Load’s Operating Range with Von Latch set to ON
When Von Latch is OFF, the electronic load will begin sinking current if the input voltage exceeds the Von voltage.
When the input voltage drops below the Von voltage value, the electronic load will still continue sinking current and the
input remains on.
Figure 16 - Von Latch OFF The Load’s Operating Range with Von Latch set to OFF
To set the Von modes, from the “CONFIG” menu, select “Von” and press . The following will be displayed:
Use the and (arrows) ) keys to select between “On” or “O” and press conrm
selection. Afterwards, you will be prompted to enter the voltage point of “Von”. Use the numeric keypad or rotary knob
to change this value.
8.5.12 Congure Protection Settings
The electronic load has the following protection functions: Overvoltage protection (OVP), overcurrent protection (OCP),
overpower protection (OPP), overtemperature protection (OTP), and local and remote reverse voltage protection (LRV/RRV).
The instrument will act appropriately once any of the above protections are active. You can press any button on the front
panel to restore the protection function. For example, if the electronic load triggers the overtemperature protection, the
buzzer will alarm, the input will automatically turn o, and the mainframe VFD will display OTP.
Some OCP and OPP features are congured from within the “Protect” menu. To access this menu, go into “CONFIG”
menu and select “Protect”. The following display will show:
8.5.13 PROTECT MENU
8.5.14 Max-P A-Limit P-Limit Time