User`s guide

Agilent EasyEXPERT User’s Guide Vol. 1, Edition 1 4- 27

Function Details

SPGU Module

Only for the B1500A. High voltage SPGU is a pulse generator module designed for

semiconductor parametric test applications and provides the following key

functions. The SPGU can be controlled by using the SPGU Control classic test or

the SPGU setup function in the I/V Sweep, Multi Channel I/V Sweep, I/V List

Sweep, and I/V-t Sampling classic tests.

• Number of output channels: 2 channels per module

• Output impedance: 50 

• Output level: 0 to ± 40 V (open load), ± 20 V (50  load)

• SPGU operation mode (effective for all channels installed in B1500A):

PG (pulse generator) or ALWG (arbitrary linear waveform generator)

• Channel output operation mode:

Free run, duration, or pulse count (PG mode)/sequence count (ALWG mode)

Free run mode is not available for the SPGU Control classic test.

• PG output mode:

2-level pulse or 3-level pulse, for each channel

• Pulse switch, which is more durable than mechanical relays, and better suited for

frequent switching applications.

• Automatic voltage level adjustment by specifying load impedance of DUT

Figure 4-15 SPGU Simplified Circuit Diagram

NOTE To use the SPGU for I/V-t Sampling tests, the sampling interval must be  2 ms.

Pulse switch

ALWG

2-level

or 3-level

Output 2

Pulse switch

ALWG

2-level

or 3-level

Output 1