42
Ranges
When working in CW mode, you can press the Setup key to enter the RANGE menu. Two
overlapping ranges can be selected: LOW RANGE or HIGH RANGE. Power can be edited in either of
the two ranges. Low range will supply higher accuracy and better resolution when you set lower
power. If any value you set is outside the maximum value of the LOW RANGE, you should select
HIGH RANGE. If the electronic load is in remote control mode, you can use the POW:RANG
command to switch power range.
Vmax/Vmin Limits
These parameters refer to the voltage high and low limit for the automatic test mode. During
automatic test mode, the device under test (DUT) must be operating within the configured values
for the test to PASS upon completion. If the DUT operates outside the configured values, the test
will FAIL upon completion.
Note:
These parameters are used for
Automatic Test
ONLY
.
Immediate power level
Set the power level via the front panel. If the load is in CW mode, the new power level setting
immediately changes the input. If the load is not in CW mode, the power level setting will be saved
for use until mode is switched to CW mode.
Transient power level
A/B transient power level can be set via the front panel or by remote operation. The electronic
load can continuously toggle between the two levels when transient operation is turned on.
Constant Impedance (CZ) Mode
In this mode, the electronic load uses an A/D converter to sample and a built-in DSP calculation to
simulate the transient current wave of the tested components. Circuit principle is as follows:
V
S
L s
R s
R
L
C
L
＋
－
Is
Figure 21 - Constant Impedance Mode
