6-82 Agilent 4155B/4156B User’s Guide Vol.2, Edition 5
Screen Organization
STRESS Screen Group
• PEAK VALUE and BASE VALUE
These fields specify pulse peak and base values.
• LEADING TIME and TRAILING TIME
These specify transition time (10 to 90%) of leading and trailing edges.
• IMPEDANCE
This field specifies the PGU output impedance. In this field, select:
• LOW secondary softkey to set output impedance to about 0 W.
• 50 ohm secondary softkey to set output impedance to 50 W.
CONSTANT
The UNIT, NAME, and MODE are defined on STRESS: CHANNEL DEFINITION
screen.
On the STRESS: CHANNEL DEFINITION screen you set the SMUs and VSUs as
follows:
• dc stress: MODE= I (SMUs only) or V, FCTN=SYNC
• dc non-stress: MODE=I (SMUs only) or V, FCTN=NSYNC
CONSTANT table is for setting the output parameters of SMUs, VSUs, and PGUs
(V mode):
• SOURCE
In the SOURCE field, you specify the output value.
• COMPLIANCE
In the COMPLIANCE field, you specify the compliance value. For a VSU, this
field cannot be set: compliance value is fixed to 100 mA.
If you define more than four VSUs, SMUs, and PGUs to be constant stress or
non-stress units on the CHANNELS: CHANNEL DEFINITION screen, first four
units appear in this table. To show other units, select NEXT UNIT secondary
softkey. To scroll units, put field pointer in most right or left column, then press the
left arrow or right arrow MARKER/CURSOR front-panel keys.
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