58 Agilent U1251A/U1252A User’s and Service Guide
3 Features and Functions
Dynamic Recording
The Dynamic Recording mode detects intermittent turn on 
or turn off voltage or current surges and verifies the 
measuring performance without the user being present 
during any particular period of time. You can take readings 
simultaneously while performing other task.
Use the average reading procedure to even out unstable 
inputs, estimating the percentage in time a circuit is 
operated, and verifying the circuit performance. The 
secondary display shows the time lapse. The maximum time 
is 99,999 seconds. When this maximum time is exceeded, the 
display indicates “OL”. 
1 Press   for more than 1 second to enter Dynamic 
Recording mode. The meter is now in continuous mode or 
non- data hold (non- trigger) mode. “MAXMINAVG” and 
present value of measurement are displayed. The beeper 
sounds when a new maximum or minimum value is 
recorded.
2 Press   to cycle through maximum, minimum, average 
and present readings. The MAX,  MIN,  AVG and 
MAXMINAVG  indicators light up, corresponding to the 
displayed readings. 
3 Press   or   for more than 1 second to exit 
Dynamic Recording mode.
• Press   to restart the dynamic recording.
• The average value is the true average of all the measured values taken 
in the Dynamic Recording mode. If an overload is recorded, the 
averaging function will stop and the average value becomes 
"OL"(overload).    is disabled in Dynamic Recording mode.