3-10 Agilent 4155B/4156B User’s Guide Vol.2, Edition 5
Measurement Functions
Stress Force Function
Stress Stop Function at Abnormal Status
On the STRESS: STRESS SETUP screen, you can select whether the stress stops or
continues when an abnormal status occurs. When an 4155B/4156B is stopped by the
stress stop function, a message is displayed in the message display area.
The stress stop function is not effective until the stress has been forced for 10
seconds. For example, if STOP AT ANY ABNORM or STOP AT COMPLIANCE is
selected and abnormal status occurs after forcing stress for 5 seconds, the stop
function does not stop stress until stress is forced for 10 seconds.
Setting the Stress Stop Function
You can select one of the following in the STRESS Status field on the STRESS:
STRESS SETUP screen:
• STRESS Status = CONT AT ANY
Stress continues even if an abnormal status occurs.
• STRESS Status = STOP AT ANY ABNORM
Stress stops if any abnormal status occurs.
• STRESS Status = STOP AT COMPLIANCE
Stress stops only if SMU reaches its compliance setting.
STOP AT ANY ABNORM and STOP AT COMPLIANCE are available at the
following conditions:
• in PULSE COUNT mode: when pulse period ´ pulse count is more than 10 s.
• in DURATION mode: when specified duration is more than 10 s.
Abnormal Status
Abnormal statuses are as follows:
• SMU reaches its compliance setting.
• Current of a VSU exceeds ±100 mA.
• SMU or a VSU oscillates.
• A/D converter overflow occurs.
• Average current of PGU exceeds ±100 mA.
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