RIGOL
Chapter 2 Constant Voltage Test
2-10
DP1116A Performance Verification Manual
Transient Response Time
Transient response time refers to the time required for the output voltage of the
power supply to recover to within 15 mV following a transient variation in the load
current (50% transient variation, the output current changes from full load to half
load or vice versa). As shown in Figure 2-3, t is the transient response time. In the
following section, the transient response times at 16V/10A scale and 32V/5A scale
are tested.
t
V
t
V
Figure 2-3 Transient Response Time
Specification:
Transient Response Time
Less than 50 μs for output voltage to recover to within 15 mV following a change in output
current from full load to half load or vice versa.
Test Procedures:
1.
Turn off DP1116A. Connect DP1116A, AC power supply, electronic load and
oscilloscope according to Figure 2-1. Make sure that the programmable
electronic load is in CC mode.
2.
Turn on the AC power supply and set its voltage to 220 V.
Note: the value set in this step should be accordance with the value selected by
the voltage selector in the rear panel of DP1116A.
3.
Turn on DP1116A. Press 16V/10A at the front panel to set the scale to be
tested to 16V/10A. Set the voltage and current of the scale to be tested
according to Table 2-4. Press On/Off to enable the output of the power supply.
4.
Set the parameters of the electronic load:
Dynamic response mode; rising edge and falling edge time: 250 mA/us;
frequency: 1 kHz; duty cycle: 50%; two current values: High Level is the rated
output current and Low Level is the half-load current of the scale to be tested
(refer to Table 2-4). Turn on the electronic load.