RIGOL
Chapter 2 Constant Voltage Tests
DP1308A Performance Verification Manual
2-10
Transient Response Time
Transient response time refers to the time for the output voltage to recover to within
15mV following a 50% change in the load current. As shown in Figure 2-4, t is the
transient response time.
Figure 2-4 Transient Response Time
1.
Turn off DP1308A. Connect DP1308A, AC source, electronic load and oscilloscope
according to Figure 2-1.
2.
Turn on the AC source and set its voltage to the AC line voltage.
3.
Turn on DP1308A and press +6V, +25V or -25V at the front panel to select the
channel to be tested. Set the voltage and current of the channel to be tested
according to Table 2-5. Press On/Off under the channel to be tested to enable
power output.
4.
Make sure that the programmable electronic load is working in CC mode and set
its parameters:
transient operation mode; rising edge and falling edge time: 250mA/us;
frequency: 1kHz; duty cycle: 50%; two current values (according to Table 2-5):
High Level (the rated output current of the channel under test) and Low Level
(the half load current of the channel under test). Turn on the electronic load.
5.
Set the oscilloscope to AC coupling mode. Measure the value of t on the
oscilloscope and compare it with the specification in “Appendix B: Specifications”.
6.
Repeat steps 1 to 5 to test the transient response time of the other two output
channels.
