User`s guide

142
Chapter 4 Features and Functions
Alarm Limits
• In addition to being stored in reading memory, alarms are also
recorded in their own SCPI status system. You can configure the
instrument to use the status system to generate a Service Request
(SRQ) when alarms are generated. See the Agilent 34970A/34972A
Programmer’s Reference Help for more information.
• The default values for the upper and lower alarm limits are “0”. The
lower limit must always be less than or equal to the upper limit, even
if you are using only one of the limits.
• For details on configuring alarms on the multifunction module, see
“Using Alarms With the Multifunction Module” on page 148.
• A Factory Reset (*RST command) clears all alarm limits and turns
off all alarms. An Instrument Preset (SYSTem:PRESet command) or
Card Reset (SYSTem:CPON command) does not clear the alarm limits
and does not turn off alarms.
• Front-Panel Operation: To select the alarm for use on the active
channel, choose from the following items.
NO ALARM , USE ALARM 1 , ... USE ALARM 4
Then, choose from the following alarm conditions.
HI+LO ALARMS , HI ALARM ONLY , LO ALARM ONLY
Then, set the desired limit values and exit the menu. Note that the
instrument does not start evaluating the alarm conditions until you
exit the Alarm menu.
• Remote Interface Operation: To assign the alarm number to report
any alarm conditions on the specified channels, use the following
command (if not assigned, all alarms on all channels are reported on
Alarm 1 by default).
OUTPUT:ALARM2:SOURCE (@103,212)
34970A Refresh UG.book Page 142 Wednesday, February 17, 2010 12:34 PM