Agilent E1412A Data Sheet

Data Sheet

6.5-Digit High-Accuracy
Multimeter, C-Size

Agilent E1412A

•

1-Slot, C-size, message based

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DCV, ACV, DCI, ACI, 2/4-wire Ω, frequency, period

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NULL, MIN/MAX, LIMIT, dB, dBm

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1000 reading/s into internal memory at 4.5 digits

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Fast range/function changes

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Reading storage with internal memory

Agilent E1412A

Description

The Agilent Technologies E1412A 6.5-Digit Multimeter is a
C-size, 1-slot, message-based VXI module. It is identical in
electrical design to the E1312A, differing only in size. It
delivers the widest functionality in Agilent’s DMM line. It
also delivers high performance and Agilent high quality at
prices you’d expect to pay for a 5.5-digit DMM.

This multimeter’s wide product functionality includes volts,
amps, ohms, and frequency with advanced tests including
limit checks to drive a TTL output and dc voltage ratios.
Standard measurements include ac/dc voltage, ac/dc

current, 2- and 4-wire Ω, plus frequency/period. When

measuring dcV, this multimeter can deliver 65 range
changes per second and 30 function changes per second.

Refer to the Agilent Technologies Website for instrument
driver availability and downloading instructions, as well as
for recent product updates, if applicable.

2

dc Accuracy ± (% of reading + % of range):

Specifications are for 1-hour warm-up at 6.5 digits.

dc voltage:

Range

(2)

Test Current or
Burden Voltage

24 Hour

(1)

23° C ± 1° C

90 Day
23° C ± 5° C

1 Year
23° C ± 5° C

Temperature Coefficient
0° C - 18° C
28° C - 55° C

100.0000 mV 0.0030 + 0.0030 0.0040 + 0.0035 0.0050 + 0.0035 0.0005 + 0.0005

1.000000 V 0.0020 + 0.0006 0.0030 + 0.0007 0.0040 + 0.0007 0.0005 + 0.0001

10.00000 V 0.0015 + 0.0004 0.0020 + 0.0005 0.0035 + 0.0005 0.0005 + 0.0001

100.0000 V 0.0020 + 0.0006 0.0035 + 0.0006 0.0045 + 0.0006 0.0005 + 0.0001

300.0000 V 0.0020 + 0.0018 0.0035 + 0.0030 0.0045 + 0.0030 0.0005 + 0.0003

Range

Resistance:

(3)

Test Current or
Burden Voltage

24 Hour

(1)

23° C ± 1° C

90 Day
23° C ± 5° C

1 Year
23° C ± 5° C

Temperature Coefficient
0° C - 18° C
28° C - 55° C

100.0000 Ω 1 mA 0.0030 + 0.0030 0.008 + 0.004 0.010 + 0.004 0.0006 + 0.0005

1.000000 kΩ 1 mA 0.0020 + 0.0005 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001

10.00000 kΩ 100 µA 0.0020 + 0.0005 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001

100.0000 kΩ 10 µA 0.0020 + 0.0005 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001

1.000000 MΩ 5 µA 0.002 + 0.001 0.008 + 0.001 0.010 + 0.001 0.0010 + 0.0002

10.00000 MΩ 500 nA 0.015 + 0.001 0.035 + 0.001 0.054 + 0.001 0.0030 + 0.0004

100.0000 MΩ 500 nA || 10 MΩ 0.300 + 0.010 0.800 + 0.010 0.800 + 0.010 0.1500 + 0.0002

Range

dc current: Test Current or

Burden Voltage

24 Hour
23° C ± 1° C

90 Day
23° C ± 5° C

1 Year
23° C ± 5° C

Temperature Coefficient
0° C - 18° C
28° C - 55° C

10.00000 mA <0.1 V 0.005 + 0.010 0.050 + 0.020 0.070 + 0.020 0.005 + 0.0020

100.0000 mA <0.6 V 0.01 + 0.004 0.040 + 0.005 0.070 + 0.005 0.006 + 0.0005

1.000000 A <1 V 0.10 + 0.006 0.130 + 0.010 0.150 + 0.010 0.005 + 0.0010

3.000000 A <2 V 0.70 + 0.020 0.720 + 0.020 0.720 + 0.020 0.005 + 0.0020

dc:dc Ratio:

Range

(2)

100 mV to 300 V: (Input Accuracy) + (Reference Accuracy)

Input Accuracy = accuracy specification for the HI-LO input signal
Reference Accuracy = accuracy specification for HI-LO reference input signal

(1) Relative to calibration standards.
(2) 20% overrange on all ranges, except 300 Vdc and 3 A range.
(3) Specifications are for 4-wire Ω function, or 2-wire Ω using Math Null, Without Math
Null, add 0.2 Ω additional error in 2-wire Ω function.

Product Specifications

dc Specifications

Specifications are for 1-hour warm-up at an integration time of 100 PLCs.

dc Summary

dc voltage: 300 V max.

Voltage accuracy (dc): ± 0.0019%

3

Integration Time Normal mode rejection

(1)

100 PLC/1.67s (2s) 60 dB

(2)

10 PLC/167 ms (200 ms) 60 dB

(2)

1 PLC/16.7 ms (20 ms) 60 dB

(2)

<1 PLC/3 ms (800 µs) 0 dB

(1) For power-line frequency ± 0.1%.
(2) For power-line frequency ± 1%, subtract 20 dB; for ± 3%, subtract 30 dB.

System Speed

(Speeds are for 4.5 digits, Delay 0 and Autozero OFF. Includes measurement and
data transfer over VXI backplane.)

Function change: 30/s

Range change: 65/s
Autorange time: <30 ms

Max. internal trigger rate: 1000/s

Max. external trigger rate to memory: 1000/s

dc:dc Ratio

Measurement method: Input HI-LO/Reference HI-LO

Apply “Reference HI-LO” signal to
Ohms 4-Wire Sense terminals.”

Input HI to Input LO: 100 mV to 300 V
Reference HI to Input LO: <12 V on 100 mV to 10 V ranges

(autoranged)

Reference LO to Input LO: <2 V

Additional Error with Autozero OFF

Following instrument warm-up at calibration temperature ± 1° C and <10 minutes.

100mV-100V ranges: add 0.0002% reading + 5 µV
300 V range: add 0.0006% reading

dc Operating Characteristics

Readings speeds for 60 Hz and (50 Hz) operation, Autozero OFF.

Function NPLC Digits Reading/s Additional Noise

Error

DCV, DCI and Ω 100 6.5 0.6 (0.5) 0% of range
DCV, DCI and Ω 10 6.5 6 (5) 0% of range
DCV, DCI and Ω 1 5.5 60 (50) 0.001% of range*
DCV, DCI and Ω .2 5.5 300 0.001% of range*
DCV, DCI and Ω .02 4.5 1,000 0.01% of range*

*For 300 V range: use 0.003% of range for 5.5 digits and 0.030% of range for 4.5 digits.
For all ranges: add 20 µV for dc Volts, 4 µA for dc current, or 20 mΩ for resistance.

Considerations

Settling considerations: Reading settling times are affected by

source impedance, cable dielectric
characteristics, and input signal
changes.

Measurement considerations: Agilent recommends the use of Teflon

or other high impedance, low­dielectric absorption wire insulation
for these measurements.

Measurement method: Continuously integrating, multi-slope

III A/D converter

A/D linearity: 0.0002% of reading + 0.0001% of

range

2/4-wire Ω: 100 MΩ

Input resistance:

0.1 V, 1 V, 10 V ranges: Selectable 10 MΩ or 10 GΩ
100 V, 300 V ranges: 10 MΩ ± 1%

Input bias current: <30 pA at 25° C

Input terminals: Copper alloy

Input protection: 300 V on all ranges

Resistance
Measurement method: Selectable 4-wire or 2-wire Ω

(Current

source referenced to low input)

Max. lead resistance: (4-wire Ω) 10% of range per lead for

100 Ω and 1 kΩ per lead on all other
ranges

Input protection: 300 V on all ranges

dc Current

Shunt resistor: 0.1 Ω for 1 A and 3 A, 5 Ω for 10 mA

and 100 mA

Input protection: Externally accessible 3 A, 250 V fuse

Measurement Noise Rejection

60 Hz (50 Hz) (For 1 kΩ unbalance in LO lead.)

dc CMMR: 140 dB

dc Voltage Characteristics