Agilent Technologies U1251A, Руководство пользователя и сервисное руководство

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Getting Started Tutorial 1
Agilent U1251A/U1252A User’s and Service Guide 19
The Keypad at a Glance
The operation of each key is shown below. Pressing a key
illuminates a related symbol on the display and sounds the
beeper. Turning the rotary switch to another position resets
the current operation of the key.
Figure 1 shows the keypad of the U1252A . The ms% (Pulse
width/Duty cycle), Hz , and frequency counter
functions are only available on the U1252A .
Figure 1 U1252A Keypad
Table 1 Keypad Desciption/Functions
Function when pushed for less than 1 second Function when pushed for more than 1 second
1 acts as a toggle switch to turn backlit
ON/OFF. Backlit automatically turns off after 30s
(default)
(1)
.
displays battery capacity for 3 seconds
2 freezes measured value. In Data Hold mode, push
again to trigger hold of the next measured value. In
Refresh Hold mode, reading updates automatically
once reading is stable and count setting is
exceeded
(1)
.
enters Dynamic Recording mode. Push
again to scroll through Max, Min, Avg and
present (indicated by MAXMINAVG on display)
readings.
3 saves displayed value as a reference to be
subtracted from subsequent measurements. Push
again to see the relative value that has been saved.
enters 1 ms Peak Hold mode. Push
to scroll through Max and Min peak readings.