Guildline 6622A Series User manual

Operation Manual
For The
6622A Series
Automatic DCC Resistance Bridges
www.guildline.com
NOTICE
The contents and information contained in this manual are proprietary to
Guildline Instruments Limited. They are to be used only as a guide to the
operation and maintenance of the equipment with which this manual was
issued and may not be duplicated or transmitted by any means, either in whole
or in part, without the written permission of Guildline Instruments Limited.
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TABLE OF CONTENTS
1. INTRODUCTION.......................................................................................................1-1
1.1. SCOPE................................................................................................................................................................1-1
1.2. GENERAL DESCRIPTION............................................................................................................................1-1
1.3. OVERVIEW ......................................................................................................................................................1-2
1.4. PRINCIPLE OF OPERATION.......................................................................................................................1-3
1.4.1.1. Low Ohm Measurement Mode.............................................................................................................1-5
1.4.1.2. Normal Ohm Measurement Mode........................................................................................................1-5
1.4.1.3. High Ohm Measurement Mode............................................................................................................1-5
2. INSTALLATION ........................................................................................................2-1
2.1. PRELIMINARIES............................................................................................................................................2-1
2.1.1. Unpacking.......................................................................................................................................................2-1
2.1.2. Power Voltage Selection ................................................................................................................................2-1
2.1.3. Fuse Replacement...........................................................................................................................................2-2
2.1.4. Setup And Power On......................................................................................................................................2-3
2.2. INCOMING INSPECTION.............................................................................................................................2-3
2.3. 6622A SERIES FRONT PANEL DISPLAY AND CONTROLS................................................................2-5
2.3.1. Standard Resistor Input Terminals (Bench Model Only)..............................................................................2-5
2.3.2. Resistor Under Test Input Terminals (Bench Model Only)...........................................................................2-6
2.3.3. Guard Terminal (Bench Model Only)............................................................................................................2-6
2.3.4. Circuit Common Terminal (Bench Model Only)...........................................................................................2-6
2.3.5. Power..............................................................................................................................................................2-6
2.3.6. Display............................................................................................................................................................2-6
2.3.7. Numeric Keypad.............................................................................................................................................2-6
2.3.8. Special Keys ...................................................................................................................................................2-7
2.3.8.1. Cursor Movement Keys........................................................................................................................2-7
2.3.8.2. Function Keys.......................................................................................................................................2-7
2.4. 6622A SERIES REAR PANEL CONNECTORS AND CONTROLS........................................................2-8
2.4.1. IEEE-488 Interface.........................................................................................................................................2-8
2.4.2. Line Input Connector......................................................................................................................................2-9
2.4.3. Standard Resistor Input Terminals (Rack Model Only) ................................................................................2-9
2.4.4. Resistor Under Test Input Terminals (Rack Model Only).............................................................................2-9
2.4.5. Guard Terminal (Rack Model Only)..............................................................................................................2-9
2.4.6. Circuit Common Terminal (Rack Model Only).............................................................................................2-9
2.4.7. Ground Terminal..........................................................................................................................................2-10
2.4.8. Extender Connector......................................................................................................................................2-10

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3. QUICK MEASUREMENT GUIDE.............................................................................3-1
3.1. MEASUREMENT OPERATION GUIDE.....................................................................................................3-1
3.1.1. Normal Ohm Mode Resistance Measurement (All 6622A Models).............................................................3-2
3.1.2. Low Ohm Mode Resistance Measurement (All 6622A Models)..................................................................3-5
3.1.3. High Ohm Mode Resistance Measurement (6622A-XR and 6622A-XPR)................................................3-10
3.1.4. High Ohm Mode Resistance Measurement (6622A-HV)............................................................................3-11
3.2. BRIDGEWORKS DATA ACQUISITION SOFTWARE..........................................................................3-13
4. INSTRUMENT OPERATION ....................................................................................4-1
4.1. FRONT PANEL OPERATING PROCEDURE............................................................................................4-1
4.2. 6622A RESISTANCE MEASUREMENT BRIDGE.....................................................................................4-1
4.3. GENERAL KEY/DISPLAY OPERATIONS.................................................................................................4-5
4.3.1. Base menu.......................................................................................................................................................4-5
4.4. BASIC MENU OPERATIONS........................................................................................................................4-6
4.4.1. Menu Option-<MEASURE> .........................................................................................................................4-6
4.4.2. Menu Option - <any other menu but measure> .............................................................................................4-7
4.4.3. Base Edit/Select Menu - one column of data.................................................................................................4-8
4.4.4. Base Edit/Select Menu - two columns of data ...............................................................................................4-8
4.4.5. Operation of Select/Edit Data Menus.............................................................................................................4-9
4.4.5.1. Function - <Scrn n-N>..........................................................................................................................4-9
4.4.5.2. Function - <Edit>..................................................................................................................................4-9
4.4.5.3. Function - <Ok> ...................................................................................................................................4-9
4.5. TITLE SCREEN..............................................................................................................................................4-10
4.6. MAIN MENU...................................................................................................................................................4-11
4.6.1. <Measure> MENU Fn-1 (Main)..................................................................................................................4-11
4.6.1.1. <Measure> MENU Fn-1 (MAIN) Page 1 of 3 ..................................................................................4-12
4.6.1.2. <Measure> MENU Fn-1 (MAIN) Page 2 of 3 ..................................................................................4-13
4.6.1.3. <Measure> MENU Fn-1 (MAIN) Page 3 of 3 ..................................................................................4-14
4.6.2. <Setup> MENU Fn-1 (Setup_MAIN).........................................................................................................4-15
4.6.3. <Profiles> MENU Fn-1 (Profiles MAIN)....................................................................................................4-15
4.6.4. View..............................................................................................................................................................4-16
4.6.4.1. Summary.............................................................................................................................................4-16
4.6.4.2. Detail Graph........................................................................................................................................4-17
4.6.4.3. Detail...................................................................................................................................................4-18
4.6.4.4. Window...............................................................................................................................................4-18
4.6.5. <Edit Ohms> MENU Fn-2 (Edit_Ohms MAIN).........................................................................................4-19
4.6.5.1. <Normal> MENU Fn-1 (Edit Ohms MAIN).....................................................................................4-19
4.6.5.2. <High Ohms> MENU Fn-2 (Edit Ohms_MAIN)..............................................................................4-20
4.6.5.3. <Low Ohms> MENU Fn-3 (Edit Ohms_MAIN) ..............................................................................4-21

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4.6.6. <Sofcal> MENU Fn-3 (MAIN) ...................................................................................................................4-22
4.6.6.1. <GPIB>MENU Fn-1 (Sofcal_MAIN)...............................................................................................4-25
4.6.6.2. <Coef Set> MENU Fn-2 (Sofcal_MAIN) .........................................................................................4-25
4.6.6.3. <Diagnostic> MENU Fn-3 (Sofcal_MAIN)......................................................................................4-26
4.6.6.4. <P.O.S.T.> MENU Fn-1 (Sofcal_MAIN) .........................................................................................4-29
4.6.6.5. <Filter> MENU Fn-2 (Sofcal_MAIN)...............................................................................................4-30
4.6.6.6. <Datum> MENU Fn-3 (Sofcal_MAIN) ............................................................................................4-31
4.6.6.7. <Sys Time>MENU Fn-2 (Sofcal MAIN)..........................................................................................4-31
4.6.6.8. <Extender>MENU Fn-3 (SofcalMENU)...........................................................................................4-31
4.6.6.9 PASSWORD> MENU Fn-1 (Sofcal_MAIN) ...................................................................................4-37
5. VERIFICATION AND CALIBRATION.......................................................................5-1
5.1. RATIO ACCURACY VERIFICATION........................................................................................................5-1
5.1.1. Purpose ...........................................................................................................................................................5-1
5.1.2. Equipment Required.......................................................................................................................................5-2
5.1.3. Set Up .............................................................................................................................................................5-2
5.1.4. Verification.....................................................................................................................................................5-3
6. TROUBLESHOOTING AND MAINTENANCE .........................................................6-1
6.1. INTRODUCTION.............................................................................................................................................6-1
6.1.1. Error Messages...............................................................................................................................................6-1
6.1.2. Model 6622A Setup Warnings.......................................................................................................................6-3
6.1.3. Bridge Coefficients.........................................................................................................................................6-3
6.2. QUICK RATIO CHECK.................................................................................................................................6-4
6.2.1. Purpose ...........................................................................................................................................................6-4
6.2.2. Equipment Required.......................................................................................................................................6-4
6.2.3. Set Up .............................................................................................................................................................6-4
6.2.4. Check Procedure.............................................................................................................................................6-4
7. REMOTE CONTROL................................................................................................7-1
7.1. INTERFACES ...................................................................................................................................................7-1
7.2. IEEE-488 (GPIB) INTERFACE......................................................................................................................7-1
7.2.1. Controller........................................................................................................................................................7-2
7.2.2. IEEE-488 Responses......................................................................................................................................7-2
7.2.3. Interconnecting Cable And IEEE-488 Connector..........................................................................................7-2
7.2.4. Typical System ...............................................................................................................................................7-3
7.2.5. Address And Talk/Listen Selection................................................................................................................7-4
7.2.6. IEEE-488 Electrical Interface ........................................................................................................................7-4
7.2.7. IEEE-488 Input Buffering..............................................................................................................................7-4
7.2.8. IEEE-488 Output Buffering ...........................................................................................................................7-6
7.2.9. IEEE-488 Deadlock........................................................................................................................................7-6
7.3. COMMAND LANGUAGE..............................................................................................................................7-7
7.3.1. General Syntax For Commands......................................................................................................................7-7
7.3.2. General Syntax For Numbers.........................................................................................................................7-7

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7.4. MODEL 6622A REMOTE AND LOCAL OPERATION............................................................................7-7
7.5. MODEL 6622A PROGRAMMING COMMAND SUMMARY.................................................................7-8
8. APPENDICES...........................................................................................................8-1
8.1. GENERAL SPECIFICATIONS......................................................................................................................8-1
8.2. GENERAL SPECIFICATIONS (continued).................................................................................................8-2
8.3. RESISTANCE MEASUREMENT SPECIFICATION.................................................................................8-3

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LIST OF FIGURES
FIGURE 1-1 : MODEL 6622A BLOCK DIAGRAM.......................................................................................................1-4
FIGURE 2-1 : LINE VOLTAGE SELECTOR.................................................................................................................2-2
FIGURE 2-2 : 6622A FRONT VIEW (BENCH / RACK)...............................................................................................2-5
FIGURE 2-3 : 6622A REAR VIEW (BENCH / RACK)..................................................................................................2-8
FIGURE 3-1 : RESISTANCE MEASUREMENT RESPONSE VERSUS TEST SAMPLE..........................................3-1
FIGURE 3-2 : REAR PANEL CONNECTIONS - NORMAL OHM MODE.................................................................3-2
FIGURE 3-3 : REAR PANEL CONNECTIONS –LOW OHM MODE WITH 6623....................................................3-8
FIGURE 3-4 : REAR PANEL CONNECTIONS –LOW OHM MODE WITH 6623A-300 .........................................3-9
FIGURE 3-5 : REAR PANEL CONNECTIONS –HIGH OHM MODE......................................................................3-12
FIGURE 4-1 : MENU TREE –MEASURE/SOFCAL.....................................................................................................4-2
FIGURE 4-2 : MENU TREE –SETUP ............................................................................................................................4-3
FIGURE 4-3 : MENU TREE –MEASURE-VIEW..........................................................................................................4-4

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LIST OF TABLES
TABLE 2-1 : FUSE RATINGS.........................................................................................................................................2-2
TABLE 3-1 : RECOMMENDED NORMAL OHM MODE TEST SETUPS.................................................................3-4
TABLE 3-2 : 6623 RECOMMENDED LOW OHM MODE TEST SETUP..................................................................3-7
TABLE 3-3 : 6623A-300 RECOMMENDED LOW OHM MODE TEST SETUP........................................................3-7
TABLE 3-4 : RECOMMENDED 100 V HIGH OHM MODE TEST SETUP..............................................................3-10
TABLE 3-5 : RECOMMENDED 1000 V HIGH OHM MODE TEST SETUP............................................................3-11
TABLE 6-1 : MODEL 6622A ERROR MESSAGES ......................................................................................................6-2
TABLE 7-1 : FACTORY SETTING-GPIB......................................................................................................................7-2
TABLE 7-2 : IEEE-488 CONNECTOR PIN DESIGNATIONS.....................................................................................7-5
TABLE 7-3 : MODEL 6622A IEEE-488 DEVICE CAPABILITIES..............................................................................7-6
TABLE 8-1 : GENERAL SPECIFICATIONS..................................................................................................................8-1
TABLE 8-2 : GENERAL SPECIFICATIONS (CONTINUED)......................................................................................8-2
TABLE 8-3 : RESISTANCE MEASUREMENT SPECIFICATION (ALL 6622A MODELS).............................8-5
TABLE 8-4 : RESISTANCE MEASUREMENT SPECIFICATION (ALL 6623A MODELS).............................8-6

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Section 1
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1. INTRODUCTION
1.1. SCOPE
This document describes the operation and maintenance of the 6622A Series of Automatic DCC
Resistance Bridges.
1.2. GENERAL DESCRIPTION
The 6622A series bridges can be controlled from the front panel or by a computer system through
software. The BridgeWorks Software Users Manual describes the operation of the 6622A with the
software. Once the computer system is installed and connected to the IEEE-488 Interface of the
6622A Resistance Bridge, full software control of the bridge is possible. The front panel controls
and indicators of the 6622A Bridge, are shown in Figure 2-1. The corresponding rear panel
controls and connectors are shown in Figure 2-2. The following models are described in this
manual.
6622A-B (Base model with measurement up to 100 kΩ)
6622A-XP (eXtended Precision model with measurement up to 100 kΩ, and higher accuracy)
6622A-XPS (eXtended Special Accuracymodel with measurement up to 100 kΩ)
6622A-XR (eXtended Range model with measurement up to 100 MΩ, at base accuracy)
6622A-XPR (eXtended Precision and Range model with measurement up to 100 MΩ, and higher
accuracy)
6622A-HV (High Voltage model with measurement up to 1 GΩ, and the best accuracy)
The 6622A series bridges can also be installed with a T-Option adding additional temperature
functionality. The description of T-Option and use of the 6622A bridge series in thermometry
applications is outlined in the manual OM6622A/T.