Agilent E1412A Data Sheet

Data Sheet

6.5-Digit High-Accuracy
Multimeter, C-Size

Agilent E1412A

•

1-Slot, C-size, message based

•

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

•

NULL, MIN/MAX, LIMIT, dB, dBm

•

1000 reading/s into internal memory at 4.5 digits

•

Fast range/function changes

•

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

4

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

Specifications are for 1-hour warm-up at 6.5 digits,
Slow ac filter, sinewave input.

True RMS ac Voltage

(3)

:

Range

(2)

Frequency 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 3 Hz-5 Hz 1.00 + 0.03 1.00 + 0.04 1.00 + 0.04 0.100 + 0.004

100.0000 mV 5 Hz-10 Hz 0.35 + 0.03 0.35 + 0.04 0.35 + 0.04 0.035 + 0.004

100.0000 mV 10 Hz-20 kHz 0.04 + 0.03 0.05 + 0.04 0.06 + 0.04 0.005 + 0.004

100.0000 mV 20 kHz-50 kHz 0.10 + 0.05 0.11 + 0.05 0.12 + 0.05 0.011 + 0.005

100.0000 mV 50 kHz-100 kHz 0.55 + 0.08 0.60 + 0.08 0.60 + 0.08 0.060 + 0.008

100.0000 mV 100 kHz-300 kHz 5.00 + 0.50 5.00 + 0.50 5.00 + 0.50 0.020 + 0.020

1.000000 V to 300.000 V

(4)

3 Hz-5 Hz 1.00 + 0.02 1.00 + 0.03 1.00 + 0.03 0.100 + 0.003

1.000000 V to 300.000 V

(4)

5 Hz-10 Hz 0.35 + 0.02 0.35 + 0.03 0.35 + 0.03 0.035 + 0.003

1.000000 V to 300.000 V

(4)

10 Hz-20 kHz 0.04 + 0.02 0.05 + 0.03 0.06 + 0.03 0.005 + 0.003

1.000000 V to 300.000 V

(4)

20 kHz-50 kHz 0.10 + 0.04 0.11 + 0.05 0.12 + 0.05 0.011 + 0.005

1.000000 V to 300.000 V

(4)

50 kHz-100 kHz 0.55 + 0.08 0.60 + 0.08 0.06 + 0.08 0.060 + 0.008

1.000000 V to 300.000 V

(4)

100 kHz-300 kHz

(5)

5.00 + 0.50 5.00 + 0.50 5.00 + 0.50 0.200 + 0.020

True RMS ac Current

(3)

:

Range Frequency 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

1.000000 A 3 Hz-5 Hz 1.05 + 0.04 1.05 + 0.04 1.05 + 0.04 0.100 + 0.006

1.000000 A 5 Hz-10 Hz 0.35 + 0.04 0.35 + 0.04 0.35 + 0.04 0.035 + 0.006

1.000000 A 10 Hz-1 kHz 0.15 + 0.04 0.15 + 0.04 0.15 + 0.04 0.015 + 0.006

1.000000 A 1 kHz-50 kHz 0.40 + 0.04 0.40 + 0.04 0.40 + 0.04 0.015 + 0.006

3.000000 A 3 Hz-5 Hz 1.70 + 0.06 1.70 + 0.06 1.70 + 0.06 0.100 + 0.006

3.000000 A 5 Hz-10 Hz 0.95 + 0.06 0.95 + 0.06 0.95 + 0.06 0.035 + 0.006

3.000000 A 10 Hz-1 kHz 0.75 + 0.06 0.75 + 0.06 0.75 + 0.06 0.015 + 0.006

3.000000 A 1 kHz-50 kHz 1.00 + 0.06 1.00 + 0.06 1.00 + 0.06 0.15 + 0.06

(1) Relative to calibration standards.
(2) 20% overrange on all ranges, except 300 Vac and 3A ranges which have 1% overrange.
(3) 100 mV to 100 V range specifications are for sine wave input >5% of range. For inputs from 1% to 5% of range and <50 kHz, add 0.1% of range additional error. For 50 kHz to
100 kHz, add 0.13% additional error. 300 V range specifications are for sinewave input >15% of range. For inputs from 3% to 15% of range and >50 kHz, add 0.30% of kHz, add

0.40% of range additional error.
(4) For 300 V range, use (% reading) shown in table and multiply each (% range) x 3.
(5) 300 Vac range limited to 50 kHz. For frequencies >50 kHz, signals must be ≤1.5 x 10

7

VHz.

Additional ac Specifications:

Low Freq. Errors

(% of reading)

Crest Factor Errors

(non-sinewave)*

Frequency ac Filter Crest Factor Error

Slow Medium Fast (% of reading)

10 Hz-20 Hz 0 0.74 — 1-2 0.05%
20 Hz-40 Hz 0 0.22 — 2-3 0.15%
40 Hz-100 Hz 0 0.06 0.73 3-4 0.30%
100 Hz-200 Hz 0 0.01 0.22 4-5 0.40%
200 Hz-1 kHz 0 0 0.18
>1 kHz 0 0 0

*For frequencies below 100 Hz, slow ac filter specified for sinewave input only.

Noise Rejection

(For 1 kΩ unbalance in LO lead.)

ac CMMR: 70 dB

ac Specifications

ac Summary

ac voltage: 300 V max.

Voltage accuracy (ac): ± 0.07%

5

True RMS ac Current

Measurement method: Direct couple to the fuse and shunt.

ac-coupled True RMS measurement
(measures the ac component only).

Shunt resistor: 0.1 Ω for 1 A and 3 A ranges

Burden voltage:

1A range: <1 Vrms
3A range: <2 Vrms

Input protection: Externally accessible 3 A, 250 V fuse

ac Operating Characteristics

Maximum reading rates 0.01% of ac step additional error. Additional settling delay
required when input dc level varies.

Function Digits Reading/s ac Filter

ACV and ACI 6.5 7 s/reading Slow
ACV and ACI 6.5 1 Medium
ACV and ACI 6.5 1.6

(1)

Fast
ACV and ACI 6.5 10 Fast
ACV and ACI 6.5 50

(2)

Fast

(1) For External Trigger or remote operation using default settling delay (Delay Auto).
(2)Maximum useful limit with default settling delays used.

Systems Speeds

Maximum useful limit with default settling delays used; Speeds are for 4.5 digits,
Delay 0, and Fast ac filter.

Function or range change: 5/s
Autorange time: <0.8 s

ASCII reading to GPIB: 50/sec

Max. internal trigger rate: 50/s

Max. external trigger rate to memory: 50/s

Additional Low-Frequency Errors (% of reading)

Input >100 mV. For mV input, multiply % of reading error x 10.

Frequency 6.5 digits 5.5 digits 4.5 digits

3 Hz-5 Hz 0 0.12 0.12
5 Hz-10 Hz 0 0.17 0.17
10 Hz-40 Hz 0 0.2 0.2
40 Hz-100 Hz 0 0.06 0.21
100 Hz-300 Hz 0 0.03 0.21
300 Hz-1 kHz 0 0.01 0.07
>1 kHz 0 0 0.02

True RMS ac Voltage

Measurement method: ac-coupled True RMS — measures

the ac component of the input with up
to 300 Vdc of bias on any range.
(Max ac+dc = 300 V rms.)

Crest factor: Maximum 5:1 at full scale

ac filter bandwidth:

Slow: 3 Hz-300 kHz
Medium: 20 Hz-300 kHz
Fast: 200 Hz-300 kHz

Input impedance: 1 MΩ ±2%, in parallel with 100 pF

Input protection: 300 Vrms all ranges

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

Frequency and Period Accuracy (% of reading)

Frequency and Period Specifications

Function Range

(2)

Frequency 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

Frequency, Period 100 mV to 300 V 3 Hz-5 Hz 0.10 0.10 0.10 0.005
Frequency, Period 100 mV to 300 V 5 Hz-10 Hz 0.05 0.05 0.06 0.005
Frequency, Period 100 mV to 300 V 10 Hz-40 Hz 0.03 0.03 0.03 0.001
Frequency, Period 100 mV to 300 V 40 Hz-300 kHz 0.006 0.01 0.01 0.001

(1) Relative to calibration standards.
(2) 20% overrange on all ranges, except 300 Vac range which has 1% overrange.

6

Operating Characteristics

Speeds are for 4.5 digits, Delay 0, and Fast ac filter.

Function Digits Reading/s

Frequency, Period 6.5 1
Frequency, Period 5.5 9.8
Frequency, Period 4.5 80

Systems Speeds

Configuration rates: 14/s
Autorange time: <0.6 s

Max. internal trigger rate: 80/s

Max. external trigger rate to memory: 80/s

Characteristics

Warmup time: 1 hour

State storage memory: Power-off state automatically saved

Functions

Idc: 3 A

Iac: 3 A

Frequency: 300 kHz
Period: 3.3 µs

Temp.: Tm, Tc, RTD

General Specifications

VXI Characteristics

VXI device type: Message based

Data transfer bus: A16

Size: C

Slots: 1

Connectors: P1/2

Shared memory: n/a

VXI buses: n/a

Instrument Drivers - See the Agilent Technologies Website

(http://www.agilent.com/find/inst_drivers) for driver availability and
downloading.

Command module firmware: n/a

Command module firmware rev: n/a

I-SCPI Win 3.1: n/a

I-SCPI Series 700: n/a

C-SCPI LynxOS: n/a

C-SCPI Series 700: n/a

Panel Drivers: No

VXI

plug&play

Win Framework: Yes

VXI

plug&play

Win 95/NT Framework: Yes

VXI

plug&play

HP-UX Framework: No

Module Current

I

PM

I

DM

+5 V: 0.2 0.1
+12 V: 0.7 0.06
–12 V: 00
+24 V: 00
–24 V: 00
–5.2 V 00
–2 V: 00

Cooling/Slot

Watts/slot: 9.40
∆P mm H

2

O: 0.05

Air Flow liter/s: 0.80

Ordering Information

Description Product No.

6.5-Digit Multimeter, High Accuracy E1412A
ANSI Z540 Compliant Calibration E1412A A6J

Measurement method: Reciprocal-counting technique. ac-

coupled input using the ac voltage
measurement function.

Voltage ranges: 100 mV rms full scale to 300 V rms.

Auto or manual ranges.

Gate time: 10 ms, 100 ms, or 1 s

Settling considerations: Errors will occur when attempting to

measure the frequency or period of an
input following a dc offset voltage
change. The input blocking RC time
constant must be allowed to fully
settle (up to 1 s) before the most
accurate measurements are possible.

Measurement considerations: All frequency counters are susceptible

to error when measuring low-voltage,
low-frequency signals. Shielding
inputs from external noise pickup is
critical for minimizing measurement
errors.

Max. reading rate: 1K

Measuring Characteristics

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Data Subject to Change
© Agilent Technologies, Inc. 2001
Printed in the U.S.A. May 1, 2004
5965-5563E