SECTION 7: CONNECTORS, APPLICATIONS & PROTECTION FEATURES
Entire Contents Copyright
2014 by Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
42L Series Modular DC Load Operation Manual
Page 41 of 88
KEY# Description
10
LOAD ON/OFF key and LED
The load input can be toggled ON/OFF using the front panel's LOAD ON/OFF key. The load current
slew rate follows the slew rate setting, so the load current slew rate will change at the programmed
Rise/Fall slew rate setting respectively.
Turning the LOAD OFF does not affect the programmed settings. The LED is OFF to indicate LOAD
OFF status. The LOAD will return to the previously programmed values when the LOAD key is
turned to ON again.
The Load ON LED indicates the load is ready to sink current from DC input.
1.
Load ON/OFF key: Switches from load ON to load OFF. The fall slew rate is in accordance
with the slew rate setting on the front panel.
2.
DC input voltage: There is a load ON and load OFF voltage control circuit in the electronic
load. When the Device under Test turns ON, the output voltage of D.U.T will increase up
from 0 to rated output voltage. The electronic load will start to sink current after load
voltage is higher than load ON voltage configuration setting (See “Config” key).
The programmed load ON voltage for the 42L Series load is from 0.1 to 25V. When the
device under test (DUT) turns OFF, the output voltage of DUT will decrease down to 0 volt.
The electronic load will stop to sink current after load voltage is lower than load OFF
voltage configuration setting (See “Config” key). The programmed load OFF voltage for the
load is from 0 Vdc to the load ON voltage value.
11
DYN / STA key and LED
This key is available in Constant Current and Constant Power mode only. In Constant Resistance and
Constant Voltage mode, this key has no function and the LED is OFF. The load will default to static
mode. In Constant Current and Constant Power mode, the Static or Dynamic mode is toggled by this
key; the LED will be lit if the load is in Dynamic mode.
12
RANGE key and LED
RANGE AUTO / II Key is for range selection. If the Range AUTO LED is OFF, the load will be in Range I
or II in accordance with the actual current value. When Range the II, LED is ON, the current
programming will be locked on Range II.
