Keysight Technologies B1500A Self-Paced Training Manual page 151

Module 5
SPGU Control and Applications
High Voltage Semiconductor Pulse Generator Unit (HVSPGU) is specially designed for
semiconductor test. Most pulse generators' output voltage is less than 10 V with 50 ohm impedance.
However, in semiconductor test (especially reliability test) 30 to 40 V capability is required for the
flash memory write/erase cycle test. The HVSPGU output voltage is 40 V at open load.
The HVSPGU provides two output mode, PG mode and ALWG mode. In the PG mode, the
HVSPGU can output 2- or 3-level voltage pulse. And in the ALWG mode, it can output an arbitrary
linear waveform voltage.
The pulse switch is built into the SPGU channel for performing the endurance test of the NOR type
flash memory effectively. The SPGU channel can output the drain pulse for the write operation and
make the open status for the erase operation in one pulse period.
The output impedance of the SPGU is fixed to 50 ohm. However, the SPGU channel can output the
voltage close to the setting value if you specify the load impedance of DUT properly. Because the
channel automatically adjusts the output level by using the specified load impedance value.
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