System DC power output response speed
Many devices use multiple different DC bias voltages for testing to ensure correct performance within the specified operating range. Changing multiple bias voltages may require an additional few seconds, which accounts for a significant portion of the testing time.
When changing the output voltage value of the power supply to a new value, multiple steps will occur, as shown in Figure 1. These steps all require a time limit.
Once the power supply receives a command, it must process it, that is, the command processing time. Then the power output reacts and becomes a new setting. The time taken to reach the final value of * within a certain set frequency band is the output response time.
The differences between DC power sources in various systems may be very significant. Table 1 compares the representative command processing and output response time of traditional system DC power supplies with the time of throughput optimized DC power supplies (in this case, Agilent N6750A series DC power supply modules). It belongs to the N6700 modular power system series. Fast output response can reduce the time required for new voltage settings by several hundred milliseconds
The impact of measurement speed on test throughput
Compare the representative measurement command processing and acquisition time of traditional system DC power supply with the time of throughput optimized DC power supply (in this case, Agilent N6760A series DC power supply module).
Switching from traditional system DC power supply to DC power supply optimized for measuring throughput can reduce measurement time from approximately 100 milliseconds to only a few milliseconds. For testing ECU and other equipment, multiple power consumption measurements are usually conducted. It can easily save 0.5-1 second of time and gain a significant advantage in testing throughput. The testing requirements for semiconductor equipment are much higher. In the testing time of only a few seconds, there is little margin left for a measurement time of 100 milliseconds.
