User`s guide

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Chapter 3 System Overview
Data Acquisition System Overview
3
Alarm Limits
The 34970A/34972A has four alarm outputs which you can configure to
alert you when a reading exceeds specified limits on a channel during a
scan. You can assign a high limit, a low limit, or both to any configured
channel in the scan list. You can assign multiple channels to any of the
four available alarms (numbered 1 through 4). For example, you can
configure the instrument to generate an alarm on Alarm 1 when a limit
is exceeded on any of channels 103, 205, or 320.
You can also assign alarms to channels on the multifunction module. For
example, you can generate an alarm when a specific bit pattern or bit
pattern change is detected on a digital input channel or when a specific
count is reached on a totalizer channel. With the multifunction module,
the channels do not have to be part of the scan list to generate an alarm.
34970A Refresh UG.book Page 69 Wednesday, February 17, 2010 12:34 PM