U1401A QSG.fm Page 1 Monday, December 22, 2008 10:52 PM
Agilent U1401A Handheld Multi-Function Calibrator/Meter
Quick Start Guide
The following items are included with your instrument:
✔ Carrying case and protective holster
✔ Eight rechargeable 1.2 V Ni- MH AA batteries
✔ Power cord and external AC power adapter
✔ Standard test lead kit
✔ Yellow test lead for mA simulation
✔ Printed Quick Start Guide
✔ CD containing the User’s and Service Guide and application software
✔ Certificate of Calibration
If anything is missing or damaged, please contact the nearest Agilent
Sales Office.
WA R N I N G
Ensure that the terminal connections are correct for that particular measurement
selection before starting any measurement. To avoid damage to the device, do not
exceed the rated input limit.
CAUTION
Degradation of some product specifications can occur in the presence of ambient
electromagnetic (EM) fields and noise that are coupled to the powerline or I/O cables
of the instrument. The instrument will self-recover and operate to all specifications
when the source of ambient EM field and noise are removed or when the instrument
is protected from the ambient EM field or when the instrument cabling is shielded
from the ambient EM noise.
U1401A Quick Start Guide
Agilent Technologies
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Performing Voltage Measurements
Measuring AC voltage
1 Set the rotary switch to
or mV. Press
to select
Measuring DC voltage
V
.
1 Set the rotary switch to
or mV. Press
to select
V
.
2 Connect the red (+) and black
(–) test leads to the INPUT
terminals.
2 Connect the red (+) and black
(–) test leads to the INPUT
terminals.
3 Probe the test points and read
the display.
3 Probe the test points and read
the display.
4 Press
to display dual
measurements.
4 Press
to display dual
measurements.
Performing Current Measurements
Measuring AC current
Measuring DC current
1 Set the rotary switch to
mA. Press
to select
.
1 Set the rotary switch to
mA. Press
to select
.
2 Connect the red (+) and black
(–) test leads to the INPUT
terminals.
2 Connect the red (+) and black
(–) test leads to the INPUT
terminals.
3 Probe the test points in series
with the circuit and read the
display.
3 Probe the test points in series
with the circuit and read the
display.
Percentage scale of DC mA measurement
With the rotary switch at
mA, another option selectable with the
percentage scale of DC mA measurement.
key is the
Frequency measurement
During AC/DC voltage or AC/DC current measurement, you can measure the signal frequency
by pressing
at any time.
U1401A Quick Start Guide
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Performing Resistance Measurement and Continuity Test
CAUTION
Disconnect circuit power and discharge all high-voltage capacitors before measuring
resistance to prevent possible damage to the instrument or the device under test.
1 Set the rotary switch to
.
2 Connect the red (+) and black
(–) test leads to the INPUT
terminals.
3 Probe the resistor (or shunt)
leads and read the display.
4 To perform continuity test,
press
to toggle the
audible continuity function on
or off.
For continuity test, the instrument will
beep if the resistance is less than the
values indicated below:
Measurement range
Resistance
threshold
500.00 Ω
10 Ω
5.0000 kΩ
100 Ω
50.000 kΩ
1 kΩ
500.00 kΩ
10 kΩ
5.0000 MΩ
100 kΩ
50.000 MΩ
1 MΩ
Performing Temperature Measurements
WA R N I N G
• Before measuring the temperature of a circuit or device, disconnect its power.
• The bead type thermocouple probe is suitable for measuring temperature from
–40 °C to 204 °C in Teflon compatible environments. The probes may emit toxic
gas above this temperature range.
1 Set the slide switch to the M
position to disable the output.
2 Set the rotary switch to mV.
3 Press and hold
than 1 second.
for more
Best practices:
• Do not bend the thermocouple
leads at sharp angles.
Repeated bending may break
the leads.
4 Plug the thermocouple probe
(with adapter) into the INPUT
terminals.
• Do not immerse the
thermocouple probe in any
liquid.
5 Touch the surface to be
measured with the
thermocouple probe and read
the display.
• Clean the surface to be
measured and make sure that
the probe is securely touching
the surface.
U1401A Quick Start Guide
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NOTE
The U1401A can generate and measure signals simultaneously. While the
mode is
enabled, pressing
disables the U1401A output by placing it in the standby
mode (
). Pressing OUTPUT again toggles the output on (
).
Constant Voltage and Current Outputs
Constant voltage output
Constant current output
1 Set the rotary switch to any
one of the
positions.
1 Set the rotary switch to any
one of the
positions.
2 Press
. The
annunciator appears.
2 Press
. The
annunciator appears.
3 Press
to cycle through
±1.5 V, ±15 V,
±1.5 V,
±15 V,
±1.5 V, and
±15 V output modes.
3 Press
to cycle through
±25 mA,
±25 mA, and
±25 mA output modes.
4 Select ±1.5 V or ±15 V.
5 Press
signal.
5 Press
signal.
4 Select ±25 mA.
to output the
to output the
Autoscan and autoramp outputs
The voltage and current outputs can also be generated in predefined steps or ramp. Refer to
the User's and Service Guide for the detailed procedures.
Square Wave Output
1 Set the rotary switch to
2 Press
. The
annunciator appears.
3 Press
to cycle through
the adjustment modes for
frequency (
), duty cycle
(
), pulse width (
), and
amplitude (
). Select a
parameter to adjust.
U1401A Quick Start Guide
.
4 Press
or
to adjust the
parameter value.
5 Press
to output the
square wave signal.
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Other Functions and Features
Action
Procedure
Selects AC, DC, or AC+DC measurement
Press
Toggles peak hold mode on and off
Press and hold
Freezes the measured value
With data hold mode enabled, press
for > 1 s to exit.
for > 1 s
. Press and hold
Enters or exits the refresh hold mode
With refresh hold mode enabled, press
Enters or exits the dynamic recording mode
Press and hold
Offsets the measured value
Press
Selects the measurement range
Press
Turns on autorange
Press and hold
Turns on dual display
Press
Turns on the frequency measurement function
Press
Enables the shifted functions of the keypad
Press
for > 1 s
for > 1 s
Toggles the backlight on or off
Press and hold
Selects output mode and range for voltage and current output
With rotary switch at
enabled, press
for > 1 s
Selects parameter adjustments for square wave output
With rotary switch at
enabled, press
Selects a digit or the polarity to be adjusted
With
mode enabled, press
or
Adjusts a digit or the polarity
With
mode enabled, press
or
Toggles the output state on and off
With
mode enabled, press
or
, and with
, and with
mode
mode
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
Overload protection
AC/DC voltage measurement
250 Vrms
Resistance measurement and continuity test
Temperature measurement
AC/DC current measurement
250 V/630 mA, fast-acting fuse
U1401A Quick Start Guide
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Tilt Stand
The instrument can be raised to a standing position by means
of a tilt stand.
Safety Information
This instrument is safety and EMC certified in
compliance with:
• IEC 61010-1:2001/EN61010-1:2001 (2nd Edition)
• Canada: CAN/CSA-C22.2 No. 61010-1-04
• USA: ANSI/UL 61010-1:2004
• IEC61326-2-1:2005/EN61326-2-1:2006
• Canada: ICES-001:2004
• Australia/New Zealand: AS/NZS CISPR11:2004
Measurement Category II 150 V, Pollution Degree 2.
Use with standard or compatible test probes.
WA R N I N G
A WARNING notice denotes a hazard. It calls attention
to an operating procedure, practice, or the like that, if
not correctly performed or adhered to, could result in
personal injury or death. Do not proceed beyond a
WARNING notice until the indicated conditions are
fully understood and met.
Safety Symbols
Safety Notices
CAT II
150 V
Category II 150 V overvoltage protection
Double insulation
A CAUTION notice denotes a hazard. It calls
attention to an operating procedure, practice, or the
like that, if not correctly performed or adhered to,
could result in damage to the product or loss of
important data. Do not proceed beyond a CAUTION
notice until the indicated conditions are fully
understood and met.
Earth ground
Caution, risk of danger
Caution, risk of electric shock
For further safety information details, refer to the U1401A Handheld Multi- Function
Calibrator/Meter User’s and Service Guide.
© Agilent Technologies, Inc., 2008
First Edition, November 24, 2008
U1401-90011
Agilent Technologies
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