Transmille EA3012A Bedienungsanleitung

www. transmille.com

Version 4.00

May 2018

All product names are trademarks of their respective companies

EA3012A

Transconductance Amplifier

Operation Manual

EA3012A TRANSCONDUCTANCE AMPLIFIER

OPERATION MANUAL

Transmille Ltd. Page 2

Guarantee and service

Transmille Ltd. guarantees this instrument to be free from defects under

normal use and service for a period of 1 years from purchase. This guarantee

applies only to the original purchaser and does not cover fuses, or any

instrument which, in Transmille’s opinion, has been modified, misused or

subjected to abnormal handling or operating conditions.

Transmille’s obligation under this guarantee is limited to replacement or

repair of an instrument which is returned to Transmille within the warranty

period. If Transmille determines that the fault has been caused by the

purchaser, Transmille will contact the purchaser before proceeding with any

repair.

To obtain repair under this guarantee the purchaser must send the instrument

in its original packaging (carriage prepaid) and a description of the fault to

Transmille at the address shown below. The instrument will be repaired at the

factory and returned to the purchaser, carriage prepaid.

Note :

TRANSMILLE ASSUMES NO RESPONSIBILITY FOR DAMAGE IN TRANSIT

THIS GUARANTEE IS THE PURCHASER’S SOLE AND EXCLUSIVE

GUARANTEE AND IS IN LEIU OF ANY OTHER GUARANTEE, EXPRESSED OR

IMPLIED. TRANSMILLE SHALL NOT BE LIABLE FOR ANY INCIDENTAL,

INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS.

Transmille Ltd.

Unit 4, Select Business Centre

Lodge Road

Staplehurst

Kent

TN12 0QW

United Kingdom

Tel : +44 0 1580 890700

Fax : +44 0 1580 890711

EMail : sales@transmille.com

Web : www.transmille.com

EA3012A TRANSCONDUCTANCE AMPLIFIER

OPERATION MANUAL

Transmille Ltd. Page 3

TABLE OF CONTENTS

GUARANTEE AND SERVICE.......................................................................................................................... 2

OPERATIONAL NOTE..................................................................................................................................... 4

EA3012A TRANSCONDUCTANCE AMPLIFIER ......................................................................................... 5

MAIN FEATURES................................................................................................................................................ 5

DESIGN NOTES .................................................................................................................................................. 6

FEATURES.......................................................................................................................................................... 6

FRONT PANEL LED INDICATORS ....................................................................................................................... 7

REAR PANEL CONNECTIONS .............................................................................................................................. 8

OPERATING NOTES ............................................................................................................................................ 8

USING THE EA3012A FROM THE 3000A FRONT PANEL*................................................................................ 11

USING THE EA019 HIGH CURRENT COIL WITH 3000A FRONT PANEL CONTROL ............................................. 12

USING THE EA3012A FROM THE 4000 SERIES FRONT PANEL*....................................................................... 14

USING THE EA019 HIGH CURRENT COIL WITH 4000 SERIES FRONT PANEL CONTROL..................................... 15

USING THE EA3012A WITH THE VIRTUAL FRONT PANEL SOFTWARE ............................................................. 16

Installing the Software............................................................................................................................... 16

Selecting a COM Port................................................................................................................................ 16

Operation of the Virtual Front Panel ........................................................................................................ 17

Functions : Setting a Current Output ........................................................................................................ 17

Functions : AC Output............................................................................................................................... 18

Auto Output mode...................................................................................................................................... 18

High Current Operation............................................................................................................................. 18

Output Error Detection.............................................................................................................................. 19

SPECIFICATIONS............................................................................................................................................... 20

CARE &MAINTENANCE................................................................................................................................... 21

Cleaning the EA3012A............................................................................................................................... 21

Handling Precautions................................................................................................................................ 21

Servicing Information ................................................................................................................................ 21

Recalibration ............................................................................................................................................. 21

SUPPORT.......................................................................................................................................................... 22

EA3012A TRANSCONDUCTANCE AMPLIFIER

OPERATION MANUAL

Transmille Ltd. Page 4

OPERATIONAL NOTE

The amplifier has a remote cut-out connection on the rear panel.

When using the amplifier directly the output must be enabled by inserting the

Shorting Link supplied into the rear panel socket shown below.

SHORTING LINK

When using the optional EA019 High Current clamp coil connect the amplifier

to the thermal trip in the coil using the lead supplied. The thermal cut-out in

the coil will turn off the amplifier output to prevent damage to the coil.

NOTE : FOR SAFETY NO OUTPUTS WILL BE AVAILABLE UNTIL

EITHER THE SHORTING PLUG OR EA019 COIL ARE CONNECTED

Example – without coil in use :

Example – with Coil in use

EA3012A TRANSCONDUCTANCE AMPLIFIER

OPERATION MANUAL

Transmille Ltd. Page 5

EA3012A Transconductance Amplifier

The EA3012A is a powerful linear transconductance amplifier designed exclusively

for use with the 3000 Series calibrators which provides a cost effective solution to

calibrating high currents instruments.

Connecting to the 3000 Series calibrator using the feature connector, the EA3012A

extends the output current range to 100A DC / 75A AC - higher currents are

available by paralleling EA3012A’s as required to give the current output needed.

Main Features

Controlled by Virtual Front Panel Software (Supplied) or ProCal (option)

Stackable for Higher Currents

Low Noise Linear MOSFET Technology

Up to 100A DC • 70A AC Output

Calibration of up to 2000A Clamp Meters Using 50 Turn Coil*

Ideal For Calibrating High Power Current Shunts & Current Meters

* Requires EA019 enhanced clamp coil adapter with integrated temperature sensor above 1500A

EA3012A TRANSCONDUCTANCE AMPLIFIER

OPERATION MANUAL

Transmille Ltd. Page 6

Design Notes

Use of linear technology throughout gives a very low noise output completely free

from any switching spikes.

The latest in high power MOSFET design ensures reliable and stable operation

even into inductive loads.

Long term accuracy is assured by using precision foil resistors and a custom

manufactured internal shunt.

Features

Functions of the terminal post connections :

EA3012A Terminal Post

Function

CURRENT HI

Positive output to UUT

CURRENT LO

Negative output to UUT

EARTH

Connected to the case

EA3012A TRANSCONDUCTANCE AMPLIFIER

OPERATION MANUAL

Transmille Ltd. Page 7

Front Panel LED Indicators

Indicator

Description

POWER

Power connected and instrument switched on

OUTPUT ON

Instrument output switch on – current actively being

output from front panel terminals

OVER TEMPERATURE

Temperature of internal heatsinks exceeds operating

limits – output switched off to allow cooling of heatsinks

OVER COMPLIANCE

Compliance voltage exceeds operating parameters –

ensure correct connection to front panel terminals

CONNECTION ERROR

SHORTING LINK / COIL

TEMPERATURE REMOTE SENSE

LEAD NOT CONNECTED

The shorting link supplied with the amplifier is not

connected to the rear panel (no coil in use) or the

remote temperature sense lead is not connected from

the EA019 High Current Coil (option) to the amplifier.

EA3012A TRANSCONDUCTANCE AMPLIFIER

OPERATION MANUAL

Transmille Ltd. Page 8

Label Reference

Information

Model Number

Model number reference for product

Serial Number

Unique serial number for product

Rear Panel Connections

Connection to the 3000 Series adapter interface is

provided via a 9-Pin D-Type

IEC line input and illuminated power switch

Remote thermal cut-out control for use with EA019 2000A

Clamp Coil adapter (option)

Operating Notes

This section details operational and environmental considerations for the EA3012A

Transconductance Amplifier. Follow these instructions when operating or storing the

transconductance amplifier

EA3012A TRANSCONDUCTANCE AMPLIFIER

OPERATION MANUAL

Transmille Ltd. Page 9

Connection Recommendations

To connect the EA3012A Transconductance Amplifier to the 3000A Series Multi

Product Calibrator and 4000 Series Advanced Multiproduct Calibrator, use the

supplied adapter interface cable (9-Pin Male to 9-Pin female straight through lead) :

To use the transconductance amplifier, connect the positive and negative outputs to

the unit under test as shown below (current shunt UUT shown as example) :

Fig. 1 : Shunt Connection Example

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