Alwg Mode - Agilent Technologies B1500A Training Manual

ALWG Mode

PG1 Output
Δt
PG2 Output
ALWG stands for Arbitrary Linear Waveform Generator. This function is similar to the AWG (Arbitrary
Waveform Generator), but specialized for a semiconductor parametric test. The ALWG describes the pulse
wave by the combination of the line segment described as the differential time and absolute voltage.
Key features are as follows.
•Number of patterns in a sequence: maximum 512 for a channel
•Number of vector data: maximum 1024-N (N: number of patterns) for defining all patterns to a
channel
•Repeat count of a pattern group: maximum 1,048,576
•Time data (differential time, delta T): 10 ns to 671.088630 ms with 10 ns resolution
•Extremely short over head, 50 ns to change the pattern. No delay for the repetition of the same
pattern.
Of course, +/-40 V and 80 Vpp feature of HVSPGU is available with this ALWG feature.
This function allows you to use more complicated waveform like the multiple level pulse more than 3-level,
and step pulse or ramp voltage to characterize the novel flash memory like CTF.
Specify number of repeat for each pattern group.
50 ns
Pattern 1 Pattern 2
Smooth Transition!
No Glitch , No dip to
GND.
Pattern 3 Pattern 4
Must be < (1,024 - # of Patterns) points
13-33
50 ns
Pattern N
Pattern X
for each channel
Module 13
SPGU Control and Applications