20 Agilent U1251A/U1252A User’s and Service Guide
1 Getting Started Tutorial
Function when pushed for less than 1 second Function when pushed for more than 1 second
4 scrolls through measuring function(s) at a
particular rotary switch position.
enters Log Review mode. Push
to switch to manual or interval logging data. Push
or to view first or last logged data respectively.
Push or to scroll up or down logged data.
Push for more than 1 second to exit mode.
5 scrolls through available measuring ranges
(except when rotary switch is at TEMP or Hz [for
U1252A] position)
(2)
.
sets to Auto Range mode.
6 scrolls through available dual-combination
displays (except when rotary switch is at TEMP or
[for U1252A] position, or when meter is in 1 ms
peak hold or dynamic recording mode)
(3)
.
exits Hold, Null, Dynamic Recording, 1 ms
Peak Hold and dual display modes.
7 enters Frequency Test mode for current or
voltage measurements. Push to scroll
through frequency (Hz), duty cycle (%) and pulse width
(ms) functions. In duty cycle (%) and pulse width (ms)
tests, push to switch to positive or negative
pulse.
enters logging mode. In manual data logging,
push to log data manually into memory. In
automatic data logging, data logs automatically
(1)
.
Push for more than 1 second to exit auto data
logging mode.
NOTE
1. See Ta ble 3 , “Available setting options in Setup mode,” for details of
available options.
2.
When rotary switch is at TEMP, push to switch to ºC or ºF display. When
rotary swtich is at Hz, push to switch to division of signal frequency by 1 or
100.
3. When rotary switch is at TEMP, ETC is ON by default. You may push to
disable ETC (Environment Temperature Compensation), will appear on display.
For pulse and duty cycle measurement, push to switch trigger slope to
positive or negative. When meter is in peak or dynamic-recording mode, push
to restart 1 ms peak hold or dynamic recording mode.
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