Burster RESISTOMAT 2408 User manual

RESISTOMAT®
Model 2408
Manufacturer:
burster präzisionsmesstechnik gmbh & co kg
Talstraße 1 - 5 P.O. Box 1432
76593 Gernsbach 76587 Gernsbach
Germany Germany
Tel.: [phone] / 6450
Fax.: [phone] / 64588
E-Mail: [e-mail]
www.burster.com
774-002408EN-5070-021513
© 2011 burster
präzisionsmesstechnik gmbh & co kg
All rights reserved
Valid from: 18.02.2011

RESISTOMAT®
Model 2408
Page 2
Note:
Exclusion of warranty liability for operating manuals
All information in the present documentation was prepared and compiled with great care
and reproduced subject to effective control measures. No warranty is provided for freedom
from errors. We reserve the right to make technical changes. The present information as
well as the corresponding technical data can change without notice. Reproduction of any
part of this documentation or its processing or revision using electronic systems is prohibited
without the manufacturer’s prior written approval.
Components,devicesandmeasuredvaluesensorsmadebybursterpraezisionsmesstechnik
(hereinafter referred to as “product”) are the results of targeted development and meticulous
research.As of the date of delivery, burster provides a warranty for the proper condition and
functioning of these products covering material and production defects for the period specied
in the warranty document accompanying the product. However, burster excludes guarantee
or warranty obligations as well as any liability beyond that for consequential damages
caused by improper use of the product, in particular the implied warranty of success in the
market as well as the suitability of the product for a particular purpose. Furthermore, burster
assumes no liability for direct, indirect or incidental damages as well as consequential or
other damages arising from the provision and use of the present documentation.

Page 3
K o n f o r m i t ä t s e r k l ä r u n g (nach EN ISO/IEC 17050-1:2010)
Declaration of conformity (in accordance with EN ISO/IEC 17050-1:2010)
burster präzisionsmesstechnik gmbh & co kg
.
Talstr. 1-5
.
D-76593 Gernsbach (Postfach 1432 D-76587 Gernsbach) Tel. [phone]
.
Fax 645-88
www.burster.de
.
www.burster.com
.
[e-mail]
Sitz der Gesellschaft: HRA 530170 Mannheim
.
Komplementär: burster präzisionsmesstechnik Verwaltungs-GmbH
.
Sitz der Gesellschaft: Gernsbach HRB 530130 Mannheim
Geschäftsführer: Matthias Burster
.
Prokurist: Edgar Miggler
.
UST-Identnr.: DE 144 005 098
.
Steuernr. : 39454/10503
Dresdner Bank AG Rastatt Kto. 06 307 073 00 BLZ 662 800 53
.
Volksbank Baden-Baden*Rastatt eG Kto. 302 082 00 BLZ 662 900 00
Name des Ausstellers: burster präzisionsmesstechnik gmbh & co kg
Issuer’s name:
Anschrift des Ausstellers: Talstr. 1-5
Issuer’s address: 76593 Gernsbach, Germany
Gegenstand der Erklärung: Digitales Teraohmmeter RESISTOMAT®
Object of the declaration: Digital Teraohmmeter RESISTOMAT®
Modellnummer(n) (Typ): 2408
Model number / type:
Diese Erklärung beinhaltet obengenannte Produkte mit allen Optionen
This declaration covers all options of the above product(s)
Das oben beschriebene Produkt ist konform mit den Anforderungen der folgenden Dokumente:
The object of the declaration described above is in conformity with the requirements of the following documents:
Dokument-Nr Titel Ausgabe/Ausgabedatum
Documents No. Title Edition/Date of issue
2006/95/EC Elektrische Betriebsmittel zur Verwendung innerhalb
bestimmter Spannungsgrenzen
2006
Electrical Equipment designed for use within certain voltage
limits
2004/108/EC Elektromagnetische Verträglichkeit 2004
Electromagnetic Compatibility
EN 61010-1 Sicherheitsbestimmungen für elektrische Mess-, Steuer-
, Regel- und Laborgeräte, Messkategorie 1,
Schutzklasse III
2001
Safety requirements, CAT 1, Safety class 3
EN 50022 Grenzwerte und Messverfahren für Funkstörungen von
Einrichtungen der Informationstechnik
2008
EMC Generic emission
EN 61326-1 Elektrische Mess-, Steuer-, Regel- und Laborgeräte -
EMV-Anforderungen - Teil 1: Allgemeine
Anforderungen – industrielle Umgebung
2006
EMC Generic immunity
Zusätzliche Angaben:
Additional information:
Das Produkt wurde in einer typischen Konfiguration getestet.
The product was tested in a typical configuration.
Diese Konformitätserklärung betrifft alle nach Ausstellungsdatum ausgelieferten Produkte:
This DoC applies to above-listed products placed on the EU market after:
Gernsbach 11.02.2011 i.V. Christian Karius
Ort / place Datum / date Quality Manager
Dieses Dokument ist entsprechend EN ISO/IEC 17050-1:2010 Abs. 6.1g ohne Unterschrift gültig / According EN ISO/IEC 17050 this document is valid without a signature.
Model 2408
RESISTOMAT®

RESISTOMAT®
Model 2408
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Model 2408
RESISTOMAT®
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WARNING
OBSERVE ALL SAFETY RULES
WHEN WORKING WITH HIGH VOLTAGES OR LINE VOLTAGES.
Dangerous voltages may be present inside this instrument.
Do not open the case refer servicing to qualied personnel.
HIGH VOLTAGES MAY BE PRESENT AT THE TERMINALS
OF THIS INSTRUMENT.
WHENEVER HAZARDOUS VOLTAGES (> 45 V) ARE USED;
TAKE ALL MEASURE TO AVOID ACCIDENTAL CONTACT WITH
ANY LIVE COMPONENTS:
USE MAXIMUM INSULATION AND MINIMIZE THE USE OF BARE
CONDUCTORS WHEN USING THIS INSTRUMENT.
Use extreme caution when working with bare conductors or bus bars.
WHEN WORKING WITH HIGH VOLTAGES, POST WARNING SIGNS
AND KEEP UN REQUIRED PERSONNEL SAFETY AWAY.
CAUTION
DO NOT APPLY ANY VOLTAGES OR CURRENT TO THE TERMINALS
OF THIS INSTRUMENT IN EXCESS OF THE MAXIMUM LIMITS
INDICATED ON THE FRONT PANEL OR THE OPERATING GUIDE
LABEL.

RESISTOMAT®
Model 2408
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Model 2408
RESISTOMAT®
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Contents
Specications ..................................................................................................................11
Accessories .....................................................................................................................13
Safety Precautions .........................................................................................................15
Condensed Operating Instructions ...............................................................................17
Section 1 - Introduction
1.1 Unpacking and Inspection......................................................................................23
1.2 Product Overview ...................................................................................................23
1.3 Controls and Indicators ..........................................................................................24
1.3.1 Front Panel Controls and Indicators ...........................................................24
1.3.2 Rear Panel Controls and Connectors .........................................................26
1.4 Installation ..............................................................................................................27
1.4.1 Dimensions ..................................................................................................27
1.4.2 Instrument Placement..................................................................................27
1.4.3 Power Requirements ...................................................................................27
1.4.4 Safety Inspection .........................................................................................29
Section 2 - Operation
2.1 Terms and Conventions..........................................................................................31
2.2 Startup....................................................................................................................31
2.3 Zeroing....................................................................................................................32
2.4 Connection to Device Under Test...........................................................................32
2.5 Measurement Procedure ........................................................................................34
2.5.1 General ........................................................................................................34
2.5.2 Default Measurement Conditions ................................................................35
2.5.3 Automatic Measurement Mode ...................................................................36
2.5.4 Manual Measurement Mode........................................................................38
2.6 Menu Functions......................................................................................................38
2.6.1 General ........................................................................................................38
2.6.2 Setup Menu .................................................................................................39
2.6.2.1 Voltage ............................................................................................39
2.6.2.2 Charge Time ...................................................................................40
2.6.2.3 Dwell Time ......................................................................................40
2.6.2.4 Measure Time .................................................................................40
2.6.2.5 Discharge Time ...............................................................................41
2.6.2.6 Mode...............................................................................................41
2.6.2.7 Range..............................................................................................42
2.6.2.8 Limit ................................................................................................45
2.6.2.9 Stop on Pass ..................................................................................46
2.6.2.10 # to Average..................................................................................46

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Model 2408
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Contents (Continued)
Section 2 - Operation (Continued)
2.6.3 I/O Menu ......................................................................................................47
2.6.3.1 Display Type....................................................................................47
2.6.3.2 Result Format .................................................................................48
2.6.3.3 RS-232............................................................................................49
2.6.3.4 IEEE-488.2 ......................................................................................50
2.6.3.5 Handler ...........................................................................................50
2.6.3.6 Saving Measurement Results via USB ...........................................50
2.6.4 Utilities Menu ...............................................................................................52
2.6.4.1 Save Setup .....................................................................................53
2.6.4.2 Recall Setup....................................................................................55
2.6.4.3 Zero.................................................................................................56
2.6.4.4 Lock Out .........................................................................................57
2.6.4.5 Calibration.......................................................................................57
2.6.4.6 Set Time/Date.................................................................................58
2.6.4.7 Elapsed Time ..................................................................................59
2.6.4.8 Calibration Date ..............................................................................59
2.6.4.9 Set Contrast....................................................................................60
2.6.4.10 LCD Backlight...............................................................................60
2.7 Input/Output Interface ............................................................................................60
2.7.1 I/O Interface .................................................................................................60
2.7.2 IEEE-488.2 Interface....................................................................................62
2.7.3 Sample Program for IO Tech GPIB Card .....................................................68
2.7.4 RS232 Interface ...........................................................................................69
2.7.5 Sample Program for RS232.........................................................................70
2.7.6 Results to Printer .........................................................................................71
2.8 Error Messages.......................................................................................................72
Section 3 - Applications
3.1 Insulation Resistance Testing .................................................................................75
3.2 Test Sample Resistivity Measurements..................................................................76
3.3 Capacitor Insulation Resistance.............................................................................77
3.3.1 General ........................................................................................................77
3.3.2 Charge Time Constant.................................................................................78
3.3.3 Discharge Time ............................................................................................78
3.4 Resistance Measurements .....................................................................................79
3.5 MeasurementofVoltageCoefcient ......................................................................79
3.6 Guarded, 3 Terminal Measurements.......................................................................80

Model 2408
RESISTOMAT®
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Contents (Continued)
Section 4 - Theory
4.1 General ...................................................................................................................81
4.2 Instrument Description ...........................................................................................81
4.2.1 Basic Instrument Architecture .....................................................................81
4.2.2 2408 Instrument Modules............................................................................82
4.2.3 Instrument Options ......................................................................................83
Section 5 - Maintenance/Calibration
5.1 Routine Maintenance..............................................................................................85
5.1.1 Battery Replacement ...................................................................................85
5.1.2 Resetting of Time and Date .........................................................................85
5.1.3 Loss of Display Contrast..............................................................................86
5.1.4 Preventive Maintenance ..............................................................................87
5.2 Calibration .............................................................................................................88
5.2.1 General ........................................................................................................88
5.2.2 Calibration Procedure ..................................................................................88

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Model 2408
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Model 2408
RESISTOMAT®
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Specications
Resistance Range: 1 x103to > 1x1014 Ω(dependent on test voltage)
1x106- >1x1014 Ωat 1000Vdc
1x105- 1x1013 Ωat 100Vdc
1x104- 1x1012 Ωat 10Vdc
1x103- 1x1011 Ωat 1Vdc
(7 ranges or auto ranging)
Resistance Accuracy:* ±[0.45% +{(Rx/Vx)(0.0005 FS + 2pA) + 30Ω/Rx}100%]
Rx: Measured resistance in ohms
Vx: Programmed voltage in volts
FS: Full scale current range in amperes
Voltage Range: 1 to 1000 V
, programmable in two ranges
Voltage Accuracy:*1–100V:±(1%ofsetting+1V)
25mV resolution
 100–1000V:±(1%ofsetting+2V)
250 mV resolution
Output Voltage
Impedance: 1 kΩ± 5%
Current Limited: < 2mA
Current Measure: 1x10-13 to 1x10-3 amps
Current Accuracy:* 1nA to 1mA: ±[0.5% + (0.0005 FS + 2 pA)]
100pA to 1nA: ±[1% + (0.0005 FS + 2 pA)]
1pA to 100pA: ±[10% + (0.0005 FS + 2 pA)]
Input Impedance: 5 kΩ± 5%
Measure Limits: Pass/Fail (1 limit)
Display: LCD graphic display
Voltage warning indicator
Pass/Fail indicator
*speciedatfrontpanelconnectors

RESISTOMAT®
Model 2408
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Specications (Continued)
Test Cycle: Manual: Charge, Measure, Discharge
Automatic: Charge time: 0 -300 sec
Dwell time: 0 - 300 sec
Measure time: 0 - 999 sec
Discharge time: 0 - 300 sec
I/O Interface: Standard -RS232
I/O Port (w/safety interlock)
Optional -2408-V001 IEEE-488.2, factory installed at unit
Input Terminals: Four sheathed banana plugs, front or rear mount (optional)
+ unknown (red) - unknown (black)
guard (blue) ground (green)
Dimensions: Bench with tilt back bail
(133.4mm high x 444.5mm wide x 406.4mm deep)
Weight: Approximately 8.2 kg - Net
Approximately 11.8 kg - Shipping
Environmental: MIL-T-28800D, Type 3, Class 5, Style E & F
Operating: 0°C to 50°C, stated accuracy <45% RH
Storage: -40°C to 71°C
Altitude: <2000m, Installation Category 1, Pollution Degree 1
Power: •90–250V •47–63Hz •40Wmax
General: •Fullyprogrammableviamenu
 •Zeroing
 •Storedtestconditionsandresults
 •Selectedmeasurementunits(engineeringorscientic)
Accessories •InstructionManual •ACPowerCable
Supplied: •CalibrationCerticate •1MΩand 100 kΩCapacitor Adapt-
ers
 •InterlockConnector
Accessories •2408-Z001RackMountKit •2408-Z002ShieldedLeadSet
 •2408-Z006GuardRingCell

Model 2408
RESISTOMAT®
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Accessories

RESISTOMAT®
Model 2408
Page 14

Model 2408
RESISTOMAT®
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Safety Precautions
WARNING
The 2408 Megohmmeter can supply an output voltage as high as 1000Vdc
to the external device under test (DUT).
Although the 2408 unit is designed with full attention to operator safety,
serious hazards could occur if the instrument is used improperly and these
safety instructions are not followed.
1. The 2408 unit is designed to be operated with its chassis connected to earth ground.
The 2408 instrument is shipped with a three-prong power cord to provide this con-
nection to ground. The power cord should only be plugged in to a receptacle that
provides earth ground. Serious injury can result if the Sentry unit is not connected
to earth ground.
2. Tightlyconnectcable(s)tothe(green)GNDterminal.Ifthisisnotdone,theDUT’s
casing can be charged to the high voltage test level and serious injury or electrical
shock hazards could result if the DUT is touched.
3. Never touch the metal of the High Voltage probe directly. Touch only the
insulated parts of the lead(s).
4. Nevertouchthetestleads,testxtureorDUTinanymanner(thisincludesinsulation
on all wires and clips) when the high voltage is applied and the red CAUTION HIGH
VOLTAGE LED is lit.
5. Before turning on the 2408 unit, make sure the AC power cord is plugged into
thepropervoltagesourceandthatthereisnodevice(DUT)orxtureconnected
to the test leads.
6. After each test, press the [STOP] (red) button for safety. This terminates the high
voltage being applied to the output terminals.
7. When the CAUTION HIGH VOLTAGE LED is lit, NEVER touch the device under test,
the lead wires or the output terminals.
8. Before touching the test lead wires or output terminals make sure:
a) The red [STOP] button has been pressed.
b) The CAUTION HIGH VOLTAGE LED is OFF.
c) The output voltage display is 0 (zero).
9. In the case of an emergency, turn OFF the [POWER] switch using a “hot stick”
and disconnect the ac power cord from the wall. DO NOT TOUCH THE 2408
INSTRUMENT.
Position the equipment so it is easy to disconnect. Disconnect by means of the
power plug or power connector.
10. If the CAUTION HIGH VOLTAGE LED does not go off when the [STOP] button is
pressed, immediately stop using the tester. It is possible that the output voltage is
still being delivered regardless of the TEST ON/OFF control signal.
11. When the 2408 instrument is used in remote control mode, be extremely careful.
The High Voltage Output is being turned on and off with an external signal.

RESISTOMAT®
Model 2408
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Safety Symbols
The product is marked with the following safety symbols.
Product will be marked with this symbol (ISO#3864) when it is necessary
for the user to refer to the instruction manual in order to prevent injury or
equipment damage.
Product marked with this symbol (IEC417) indicates presence of direct
current.
Product will be marked with this symbol (ISO#3864) when voltages in
excess of 1000V are present.
Indicates the grounding protect terminal, which is used to prevent
electric shock from the leakage on chassis. The ground terminal must
connect to earth before using the product.
Warning Procedure can cause hazard to human if the warning is neglected.
Caution Avoid product misuse. It may cause damage to the product itself and
the DUT if the caution is neglected.
Note Important information or tips for the procedures and applications.
Warning Signal During Testing
“DANGER–HIGHVOLTAGETESTINPROGRESS,UNAUTHORIZEDPERSONS
KEEPAWAY”
Disposal
Do not dispose of electrical appliances as unsorted
municipal waste, use separate collection facilities.
Contact your local government for information regarding
the collection systems available. If electrical appliances
aredisposedofinlandllsordumps,hazardoussubstances
can leak into the groundwater and get into the food chain,
damaging your health and well-being. When replacing old
appliances with new one, the retailer is legally obligated to
take back your old appliances for disposal.

Model 2408
RESISTOMAT®
Page 17
Condensed Operating Instructions
WARNING
High voltage is applied to the measurement terminals of the 2408 any time the CAUTION
HIGH VOLTAGE LED is ON. While the current from the instrument is limited, the
energy stored in a capacitive device connected to the terminals may be lethal. Always
make sure the high voltage indicator is OFF when connecting or disconnecting the
unknown.AashingCAUTIONHIGHVOLTAGElightand/orDANGERonthedisplay
indicates a defective unit with dangerously high voltages possible at the input terminals.
Power the unit down and do not use.
General Information
The 2408 Megohmmeter is a computer controlled measuring instrument for direct readout
of resistance and current. The voltage applied to the device under test (DUT) is program-
mable from 1 to 1000 V. A pass/fail indicator provides a visual display of test results based
on a preset limit. A set of power-up default test conditions are stored in the unit and are as
set by the factory (1V, test times zero) until reprogrammed by the user.
Start-up
The 2408 can be operated from a power source between 90 V and 250 Vac at a power line
frequency of 47 to 63 Hz. The standard 2408 is shipped from the factory with a 2.5 A fuse
in place for 115 V or 220 V operation. To change the fuse, refer to paragraph 1.4.3.
Connect the instrument power cord to the source of proper voltage.
IMPORTANT
The interlock connector (included with the unit) needs to be installed on the rear panel
I/O Port connector if the interlock function is not being used.
Press the [POWER] button on the front panel to apply power. To switch power off press
the [POWER] button again or if measurements are to be made proceed with Zeroing the
instrument, discussed in the next paragraph.

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Model 2408
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Zeroing
Beforemeasuring,zeroouttestleadorxturemeasurementerrorsasfollows.
1. If test leads are to be used connect them to the 2408 input terminals, red to
+ unknown, black to - unknown, with probes open and spaced some distance apart
(orxtureopen).
2. Press [MENU] key to select menu display.
3. Press Right or Left Arrow key to select Utilities menu.
4. Press Up or Down Arrow key to select Zero in the sub menu.
5. Press [ENTER] key to activate the Zero routine and follow instructions on the instru-
ment display.
Auto Measurement Mode
In automatic mode, once the [START] button is depressed the instrument sequences auto-
matically through the test cycle phases, charge, dwell, measure and discharge and a pre-
stored set of test conditions are executed. These test conditions can be DEFAULT (those at
power up), set using menus or the operator can recall a previously stored setup.
1. Connectthedeviceundertesttothe2408testleadsorotherxturebeingused.
2. If the desired setup conditions are anything other than DEFAULT, set using menus
or proceed to Recalling Setups below before continuing with step 3.
3. Initiate the auto measurement mode by pressing [START]. The High Voltage
Indicator will remain on as the unit sequences automatically through all four phases
(charge, dwell, measure, discharge) of the test cycle.
4. The measurement can be aborted at any time during the test cycle by pressing
[STOP].
5. OncetheHighVoltageIndicatorgoesoffthemeasurementiscomplete,thenal
result remains displayed and the device can be removed.

Model 2408
RESISTOMAT®
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Manual Measurement Mode
In manual measurement mode each phase of a test cycle, charge, measure and discharge
is initiated manually at the users discretion. These test conditions can be DEFAULT (those
at power up), set using menus or the operator can recall a previously stored setup.
1. Connectthedeviceundertesttothe2408testleadsorotherxturebeingused.
2. Press [MENU] key to select menu display.
3. Press Right or Left Arrow key to select Setup menu.
4. Press Up or Down Arrow key to select Mode in the sub menu.
5. Press[ENTER]toactivatetheselectioneld.
6. Press Right or Left Arrow key to select Manual and press [ENTER].
7. If the desired setup conditions are anything other than DEFAULT, set using menus
or proceed to Recalling Setups below before continuing with step 8. (Setup
measurement times are ignored in manual mode).
8. Initiate the charge phase by pressing [START] to apply high voltage to the
device. The High Voltage Indicator will remain on as long as a voltage is applied.
The measurement can be aborted at any time during the test cycle by pressing
[STOP].
9. Initiate a single measurement by pressing [START] again, The measured result
will be displayed on the LCD and will be updated each time [START] is pressed.
10. To discharge the device press [STOP].
11.Before removing the device press [STOP] again to end the discharge phase and turn
the High Voltage Indicator off.
Recalling Setups
1. To recall a set of test conditions previously stored:
Press [MENU] key to select menu display.
Press Right or Left Arrow key to select Utilities menu.
Press Up or Down Arrow key to select Recall Setup.
  Press[ENTER]keytoactivatetherecallentryeld.
Press Up or Down Arrow key to select the desired setup. choices are:
- DEFAULT, if conditions are power up which can be changed by the user.
   -USB,ifsetupistoberecalledfromaashdrive.
- Setup Name stored in the instrument internal memory or USB.
 Oncethedesiredsetupislocatedpress[ENTER]keytonalizerecallofthe  
setup conditions.

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Model 2408
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Saving Setups
1. To save the current set of test conditions as entered (conditions include, voltage, test
times, measurement range, limit, and display modes):
Press [MENU] key to select menu display.
Press Right or Left Arrow key to select Utilities menu.
Press Up or Down Arrow key to select Save Setup.
  Press[ENTER]keytoactivatesetupentryeld.
Press UP or Down Arrow key to select the desired setup, choices are:
- NEW, if a setup is to be saved in instruments internal memory.
- DEFAULT, if conditions at power up are to be changed and restored.
- USB, if a new setup is to be stored or existing one changed on the
   ashdrive.
- Setup Name if an existing set of conditions are to be changed in the
   instrumentinternalmemoryoraashdrive.
  Press[ENTER]keytoactivatetheSaveentryeldselectedabove.
If NEW is selected (internal memory or USB) enter the desired identifying name,
up to 8 characters, under which these set of test conditions will be stored.
  Press[ENTER]keytonalizestorageofthesetupconditionsorifDEFAULT
is selected one must answer Y or N to overwrite.
Changing Test Voltage
1. Set the desired test voltage:
Press [MENU] key to select menu display.
Press Right or Left Arrow key to select Setup menu.
Press Up or Down Arrow key to select Voltage.
Press [ENTER] keytoactivatethevoltageentryeld.
Enter desired test voltage (up to 5 digits with decimal) between 1 and 1000 V.
Press[ENTER]keytonalizethevoltageentry.
Changing Measurement Times
1. To set the desired measurement cycle times, charge, dwell, measure and discharge:
Press [MENU] key to select menu display.
Press Right or Left Arrow key to select Setup Menu.
Press Up or Down Arrow key to select desired time: charge, dwell, measure or
discharge.
  Press[ENTER]keytoactivatethecorrespondingtimeentryeld.
  Enterthedesiredtimebetween0and300seconds(measure,0–999onlater 
units)
  Press[ENTER]keytonalizethetimeentry.
2. Continue to set the other times as desired by repeating step 1.