Agilent Technologies U1241B User manual

Agilent Technologies
Agilent U1241B and U1242B
Handheld Digital Multimeter
Quick Start Guide
The following items are included with your multimeter:
✔Silicone test leads and 4mm probes
✔Printed Quick Start Guide
✔Four 1.5 V AAA alkaline batteries
✔Certificate of Calibration
If anything is missing or damaged, please contact the nearest Agilent Sales
Office.
For more detailed information, please refer to the Agilent U1241B and
U1242B Handheld Digital Multimeter User’s and Service Guide on Agilent
Web site (www.agilent.com/find/handheld-tools).
WARNING
Ensure the terminal connections are correct for that
particular measurement selection before starting any
measurement. To avoid damage to the device, do not
exceed the input limit.

U1241/42B Quick Start Guide
Measurement Functions Input Terminal Overload Protection
Voltage
COM
1000 V R.M.S
Diode 1000 V R.M.S
< 0.3 A short circuit
current
Resistance
Capacitance
Current (μA and mA) µA.mA COM 440 mA/1000 V
30 kA/fast-acting fuse
Current (A) A COM 11 A/1000 V 30
kA/fast-acting fuse
Temperature +T1 –T1 1000 V R.M.S
Temperature (for
U1242B)
+T2 –T2 440 mA/1000 V
30 kA/fast-acting fuse
Annunciator
Keypad
Rotary Switch
Input terminal
U1241B U1242B

U1241/42B Quick Start Guide
Annunciator Display
No. Descriptions No. Descriptions
121-segment analog bar graph
display
12 MINMAX Recording mode
2Capacitor discharge indicator 13 Harmonic Ratio mode (for
U1242B)
3Cold junction of ambient
temperature
14 Data logging mode (for
U1242B)
4Audible continuity for
resistance and diode function
15 Data logging viewing mode (for
U1242B)
5Primary display 16 Auto or manual data logging
mode and datalog viewing
mode
6AC or DC measurement mode 17 Secondary display
(temperature display)
7Auto range 18 Null math function
8Diode / Audible continuity 19 Thermocouple type for
temperature measurement
9T1, T2 and T1 – T2 temperature
measurements scan
(for U1242B)
20 Primary measurement units
21 Measurement range
10 Data hold 22 Low battery indicator
11 T1, T2* and T1 – T2*
temperature measurements
23 Auto power off indicator
*T2 temperature measurement and delta (T1 – T2) are only available for U1242B.
1
2
3
4
6
7
8
9
10
11 13
14
15 17
18
19
20
21
22
23
5
12 16

U1241/42B Quick Start Guide
Functions and Features
Function First level
functions
Range Second level functions
(press )
Range
OFF Turn off the
meter
DCV
measurement
0.1 mV
to
1000 V
ACV measurement 50 mV
to
1000 V
Harmonic ratio (for
U1242B)
0.0% to
99.9%
Diode
measurement
Switch counter
measurement
Resistance
measurement
0.1 Wto
100 MW
Audible continuity
measurement
Capacitance
measurement
0.1 nF to
10 mF
DCµA 0.1 μA to
10 mA
ACµA measurement 50 μA
to
10 mA
DCmA 0.01 mA
to
440 mA
ACmA measurement 5 mA to
440 mA
mA% scale
DCA 0.001 A
to 10 A
ACA measurement 0.5 A to
10 A
T1 T1 temperature –40 °C to
1000 °C
T2 and T1–T2
temperature
measurements (for
U1242B)
–40 °C
to
1000 °C
Keypad
Rotary Switch

U1241/42B Quick Start Guide
Action Steps
Turns ON backlight Press .
Checks battery capacity Press and hold for >1 s.
Freezes the measured value Press .
Starts MIN/MAX/AVG recording Press and hold for >1 s.
Offsets the measured value Press .
Scan the measured temperature (for
U1242B only)
Press and hold for > 1 s.
Changes the measuring range Press .
Turns on auto range Press and hold for > 1 s.
Measures frequency for AC signal Press .
Starts manual data logging Press and hold for > 1 s.

Tilt Stand
Tilt stand at 60 º Tilt stand at 30 º
Safety Notices Safety Information
The Agilent U1241B and U1242B are
safety-certified in compliance with the
following safety and EMC requirements:
• IEC 61010-1:2001 / EN61010-1:2001
• USA: UL 61010-1:2004
• Canada: CSA C22.2 No. 61010-1:2004
• IEC 61326-1:2005/ EN 61326-1:2006
• Canada: ICES/NMB-001:2004
• Australia/New Zealand: AS/NZS
CISPR11:2004
Safety Symbols
CAUTIONCAUTION
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.
WARNING
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.
Earth (ground) terminal
Equipment protected
throughout by double
insulation or reinforced
insulation
Caution, risk of electric
shock
Caution, risk of danger (refer
to the instrument manual for
specific Warning or Caution
information)
Category III 1000 V
overvoltage protection
Category IV 600 V
overvoltage protection
CAT III
1000 V
CAT IV
600 V
For further safety information details, refer to the
Agilent U1241B and U1242B Handheld Digital Multimeter
User’s and Service Guide.

Printed in Malaysia
U1241-90055
Third Edition, August 16, 2013
© Agilent Technologies, Inc., 2009–2013
Agilent Technologies