Transmille 3000HR User manual

www. transmille.com
ADVANCED METROLOGY SOLUTIONS
OPERATION MANUAL
MODEL 3000HR
HIGH RESISTANCE
STANDARD

Version 1.50
March 2021
All product names are trademarks of their respective companies
3000HR Series
High Resistance Standard
Operation Manual

3000HR HIGH RESISTANCE STANDARD
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 year 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 : [phone]
Fax : [phone]
EMail : [e-mail]
Web : www.transmille.com

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 3
TABLE OF CONTENTS
GUARANTEE AND SERVICE...................................................................................2
SETTING AND CHECKING THE LINE VOLTAGE ...................................................4
POWER LINE INLET FUSE ......................................................................................4
3000HR HIGH RESISTANCE STANDARD...............................................................5
MAIN FEATURES .....................................................................................................5
DESIGN NOTES........................................................................................................6
FRONT PANEL CONNECTIONS & CONTROLS .....................................................6
REAR PANEL CONNECTIONS ................................................................................7
OPERATIONAL PARAMETERS...............................................................................8
PRESET DECADE OUTPUTS .......................................................................................8
RANGE :1TO 10 GOHM RESISTOR BANK ..................................................................9
RANGE :10 TO 100 GOHM RESISTOR BANK ..............................................................9
OPERATION OVERVIEW .......................................................................................10
PRINCIPLE OF OPERATION.......................................................................................10
INDIVIDUAL RESISTOR MEASUREMENT :10GΩBANK .................................................11
INDIVIDUAL RESISTOR MEASUREMENT :100GΩBANK ...............................................11
PRESET DECADE VALUES .......................................................................................12
USER SELECTED VALUES........................................................................................13
REMOTE COMMANDS ...........................................................................................14
SPECIFICATIONS...................................................................................................15
CARE & MAINTENANCE........................................................................................17

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 4
Setting and checking the Line Voltage
Warning: The line power cord must have an earth conductor to
avoid risk of shock. This instrument must be correctly earthed.
This instrument has been designed to work from either 100-120 Volt line supply or
200 - 240 Volt line supply.
Check that the voltage selector is set at the correct voltage before connecting the
power to the instrument.
Connecting the instrument to the wrong supply will cause internal. To change the
line voltage, remove the fuse / voltage selector housing, rotate through 180°and
replace with the required voltage setting at the bottom of the housing indicated by
the arrow, ensure that the correct fuse is fitted.
The instrument is set for 110V operation in the USA,
230V operation in the UK and Europe.
Power Line Inlet Fuse
The power line inlet fuse is located directly below the power inlet within the voltage
selector housing.

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 5
3000HR High Resistance Standard
The 3000HR is a designed as a dedicated high resistance standard, transfer standard as well as
for calibration support for Transmille products
The stability and temperature co-efficients of the 3000HR are designed for a working environment
of 18-23°C and the standard is supplied complete with a calibration certificate.
Main Features
OUTPUT RANGES / SPECIFICATION OVERVIEW
VALUE
STABILITY /
YEAR
VOLTAGE
RATING
TEMPERATURE
COEFFICIENT
10 MOhm
0.01%
50V
5 ppm / °C
100 MOhm
1%
1kV
50 ppm / °C
1 GOhm
1%
1kV
100 ppm / °C
10 GOhm
using 10 x 1 GOhm resistors from
1 to 10 GOhm resistor bank
1% 1kV 100 ppm / °C
100 GOhm
using 10 x 10 GOhm resistors from
10 to 100 GOhm resistor bank
1% 1kV 25 ppm / °C

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 6
Design Notes
The 3000HR is built using precision resistors – no adjustable resistors are used
within the design of this reference.
Preset decade values can be selected using a RANGE button to step through in sequence with
the selected decade displayed via LED indicator.
Front Panel Connections & Controls
Functions of the terminal connections :
3000HR Terminal
Function
I
OUTPUT
Preset Decade Value Connection (I
OUTPUT
)
V
INPUT
Preset Decade Value Connection (V
INPUT
)
COM (10GΩBank)
10GΩCommon
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
10GΩbank values
COM (100GΩBank)
100GΩCommon
10, 20, 30, 40, 50, 60, 70,
80, 90, 100
100GΩbank values
EARTH
Connected to the case
RANGE Push Button
Cycles through preset ranges
Range LED Indicators
One LED per preset range value

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 7
Rear Panel Connections
Connection
IEC Inlet
Line Input
9 Way ‘D’ connector
RS232 interface
Connect to computer via USB to RS232 converter
for computers with a USB port
Label Reference
Information
Model Number
Model number reference for product
Serial Number
Unique serial number for product

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 8
Operational Parameters
CAUTION
Do not apply voltages above the maximum ratings detailed below.
Excessive voltage can cause permanent damage and affect the
nominal resistance values of the reference.
Preset Decade Outputs
VALUE
STABILITY /
YEAR
VOLTAGE
RATING
TEMPERATURE
COEFFICIENT
10 MOhm
0.01%
50V
5 ppm / °C
100 MOhm
1%
1kV
50 ppm / °C
1 GOhm
1%
1kV
100 ppm / °C
10 GOhm
using 10 x 1 GOhm resistors from
1 to 10 GOhm resistor bank
1% 1kV 100 ppm / °C
100 GOhm
using 10 x 10 GOhm resistors from
10 to 100 GOhm resistor bank
1% 1kV 25 ppm / °C

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 9
Range : 1 to 10 GOhm Resistor Bank
VALUE
STABILITY /
YEAR
VOLTAGE
RATING
TEMPERATURE
COEFFICIENT
1 GOhm
1% 1kV 100 ppm / °C
2 GOhm
3 GOhm
4 GOhm
5 GOhm
6 GOhm
7 GOhm
8 GOhm
9 GOhm
10 GOhm
Range : 10 to 100 GOhm Resistor Bank
VALUE
STABILITY /
YEAR
VOLTAGE
RATING
TEMPERATURE
COEFFICIENT
10 GOhm
1% 1kV 25 ppm / °C
20 GOhm
30 GOhm
40 GOhm
50 GOhm
60 GOhm
70 GOhm
80 GOhm
90 GOhm
100 GOhm

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 10
Operation Overview
Principle of Operation
High value resistance measurements above 100MΩtraditionally require careful consideration with
regards to noise / interference.
The principle of the high resistance standard is to allow measurements to be taken at lower
resistance values where a measurement can be achieved with lower noise / interference levels.
The purpose of the resistor banks to is allow each individual bank value to be measured in order to
determine a calculated value for higher resistances.
Measuring each 1GΩfor the 10GΩbank and each 10GΩfor the 100GΩbank individually allows
more accurate determination of higher value readings using the sum of these values.
This technique allows the noise / interference effects to be minimised when determining the high
value resistance readings using a bank of lower value resistors.

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 11
Individual Resistor Measurement : 10GΩBank
Connect between each bank position to measure each individual 1GΩresistor
To determine the 10GΩvalue, calculate the sum of 1GΩresistor values
10GΩ= R1+ R2+ R3+ R4+ R5+ R6+ R7+ R8+ R9+ R10
Individual Resistor Measurement : 100GΩBank
Connect between each bank position to measure each individual 10GΩresistor
To determine the 100GΩvalue, calculate the sum of 10GΩresistor values
100GΩ= R1+ R2+ R3+ R4+ R5+ R6+ R7+ R8+ R9+ R10

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 12
Preset Decade Values
To select preset decade values, simply connect to the I Output and V Input and use the RANGE
button to cycle through 10MΩto 100GΩ.
Note : The RANGE button will automatically set the output to the 10MΩvalue again after the
selected range reaches the 100GΩposition, eg.
10MΩ> 100MΩ> 1GΩ> 10GΩ> 100GΩ
An LED will indicate the currently selected decade value

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 13
User Selected Values
To select a value from the 10GΩbank or 100GΩbank, simply connect the first test lead to the
relevant COMMON terminal, and connect the second lead to the terminal with the desired value,
for example :
10GΩBank : 1GΩConnection
10GΩBank : 2GΩConnection
10GΩBank : 3GΩConnection
100GΩBank : 10GΩConnection
100GΩBank : 20GΩConnection
100GΩBank : 30GΩConnection

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 14
Remote Commands
The preset decade values can be selected via the RS232 interface. The interface uses a standard
9 pin PC connector and a standard serial lead. The standard can be sent individual commands
directly from the Windows HYPER TERMINAL program, any basic or high level program or from
the ProCal Calibration System
To allow communication from PC based programs, these programs must be configured to the
following settings :
BAUD RATE : 9600
PARITY : NONE
DATA BITS : 8
STOP BITS : 1
COMMAND
DESCRIPTION
*IDN?<CR>
PRODUCT INFORMATION
TRANSMILLE,3000HR,<SERIAL NUMBER>,<VERSION>
Once connected, using the PC the preset number can be sent to the standard to set the output.
The command MUST be terminated with a carriage return
(ASCII character 13), for example :
COMMAND
DESCRIPTION
1<CR>
Set 10MΩ
2<CR>
Set 100MΩ
3<CR>
Set 1GΩ
4<CR>
Set 10GΩ
5<CR>
Set 100GΩ
Where <CR> is a carriage return (ASCII 13)
Standard will respond *OK* for a valid command

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 15
Specifications
GENERAL SPECIFICATIONS
DESCRIPTION
High Resistance Reference / Transfer Standard
INTERFACE
RS232 via 9 pin ‘D’ type connector fitted to rear panel
INDICATORS
5 x LED Indicators for 5 preset output ranges
OUTPUTS
10 MOhm
100 MOhm
1 GOhm
10 GOhm [Comprised of 10 x 1 GOhm resistors in series]
100 GOhm [Comprised of 10 x 10 GOhm resistors in series]
1 to 10 GOhms Resistor Bank
Link 1 GOhm resistors together to provide decade values
from 1 GOhms to 10 GOhms
10 to 100 GOhms Resistor Bank
Link 10 GOhm resistors together to provide decade values
from 10 GOhms to 100GOhms
Resistor banks provide the ability to link each resistor together to
obtain a combined measured value from the sum of the resistor
bank.
POWER
110V OR 230V , 50/60Hz. IEC Inlet on rear panel
DIMENSIONS
45cm x 44cm x 9cm

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 16
PERFORMANCE SPECIFICATIONS
Range : Preset Decade Outputs
VALUE
STABILITY /
YEAR
VOLTAGE
RATING
TEMPERATURE
COEFFICIENT
10 MOhm
0.01%
50V
5 ppm / °C
100 MOhm
1%
1kV
50 ppm / °C
1 GOhm
1%
1kV
100 ppm / °C
10 GOhm
using 10 x 1 GOhm resistors from
1 to 10 GOhm resistor bank
1% 1kV 100 ppm / °C
100 GOhm
using 10 x 10 GOhm resistors from
10 to 100 GOhm resistor bank
1% 1kV 25 ppm / °C
Range : 1 to 10 GOhm Resistor Bank
VALUE
STABILITY /
YEAR
VOLTAGE
RATING
TEMPERATURE
COEFFICIENT
1 GOhm
1% 1kV 100 ppm / °C
2 GOhm
3 GOhm
4 GOhm
5 GOhm
6 GOhm
7 GOhm
8 GOhm
9 GOhm
10 GOhm
Range : 10 to 100 GOhm Resistor Bank
VALUE
STABILITY /
YEAR
VOLTAGE
RATING
TEMPERATURE
COEFFICIENT
10 GOhm
1% 1kV 25 ppm / °C
20 GOhm
30 GOhm
40 GOhm
50 GOhm
60 GOhm
70 GOhm
80 GOhm
90 GOhm
100 GOhm

3000HR HIGH RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 17
Care & Maintenance
The only maintenance instructions for the 3000HR precision resistance reference is periodic
cleaning. See below for details on the cleaning procedure and precautions for handling.
Cleaning the 30000HR
To keep the external enclosure of the 3000HR in good condition, clean the outer case with a soft
cloth. Do not use any liquids in cleaning the enclosure – removal of surface dust is all that is
recommended.
CAUTION
Do not use cleaning fluids or solvents for cleaning as these may damage the enclosure and affect
the plastic materials used in the precision resistance standard.
Handling Precautions
The 3000HR is designed for mechanical stability, but should not be subjected to excessive shock
or be dropped. Transportation is recommended using the original packaging with avoidance of
extreme changes of temperature.
Servicing Information
The 3000HR is provided certified from the factory, and uses high precision non-adjustable
resistance standards and are not user repairable. If the instrument is damaged it should be
returned to the factory for repair and recalibration.

Main Oce : [phone]
[e-mail]
www. transmille.com
TRANSMILLE LTD.
Unit 4, Select Business Centre,
Lodge Road, Staplehurst, Kent
TN12 0QW. United Kingdom
We truly believe in oering Soluons in Calibraon,
oering bespoke soluons for calibraon laboratories and
manufacturers across the globe. Our mission statement is not
just a phrase, it is our design and support philosophy, oering
support and advice that cannot be found elsewhere with a
friendly atmosphere.
Transmille was founded in 1995 as a commercial calibraon
service, and soon aer began to develop and manufacture
a range of electrical calibraon products and soware to
answer a growing requirement for soluons to common
problems. Following this small beginning, Transmille
has worked year on year to provide unique equipment
and soware to benet calibraon laboratories and
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connued to innovate and develop new products for the
metrology community, from world rst products such as the
2100 Electrical Test Equipment calibrator, through to the
worlds lowest cost mul product calibrator the 1000 series.
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per year, shipping instruments to customers ranging from
Naonal Standards Laboratories and manufacturers through
to small calibraon test houses around the world.
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Transmille forwards, with a dedicated design and support
team in house with a combined experience of over 60 years
in manufacture and design of electrical calibraon products
and soware.
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