Other Functions And Features; Input/Output Terminals And Overload Protection - Agilent Technologies U1401A Quick Start Manual

Other Functions and Features

Action
Selects AC, DC, or AC+DC measurement
Toggles peak hold mode on and off
Freezes the measured value
Enters or exits the refresh hold mode
Enters or exits the dynamic recording mode
Offsets the measured value
Selects the measurement range
Turns on autorange
Turns on dual display
Turns on the frequency measurement function
Enables the shifted functions of the keypad
Toggles the backlight on or off
Selects output mode and range for voltage and current output
Selects parameter adjustments for square wave output
Selects a digit or the polarity to be adjusted
Adjusts a digit or the polarity
Toggles the output state on and off

Input/Output Terminals and Overload Protection

The output terminals are protected with DC 30 V overload protection. The overload
protection limits of the input terminals are shown in the table below.
Functions
AC/DC voltage measurement
Resistance measurement and continuity test
Temperature measurement
AC/DC current measurement
Procedure
Press
Press and hold
With data hold mode enabled, press
for > 1 s to exit.
With refresh hold mode enabled, press
Press and hold
Press
Press
Press and hold
Press
Press
Press
Press and hold
With rotary switch at
enabled, press
With rotary switch at
enabled, press
With
With
With
Overload protection
250 Vrms
250 V/630 mA, fast-acting fuse
for > 1 s
for > 1 s
for > 1 s
for > 1 s
or , and with
, and with
mode enabled, press or
mode enabled, press or
mode enabled, press
U1401A Quick Start Guide
. Press and hold
mode
mode