Guildline 6622A Series User manual

Operators Manual
For The
Model 6622A Series T-Option
Automatic DCC Resistance/Thermometry Bridge
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.
OM6622A-T-B1-00
08 November 2022

OM6622A-T-B1-00
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ii
TABLE OF CONTENTS
1. INTRODUCTION.......................................................................................................1-1
1.1. SCOPE................................................................................................................................................................1-1
1.2. GENERAL DESCRIPTION............................................................................................................................1-1
2. PERFORMANCE SPECIFICATIONS.......................................................................2-1
2.1. 6622A SERIES T-OPTION TEMPERATURE MEASUREMENT SPECIFICATION.........................2-1
3. OPERATING INSTRUCTIONS.................................................................................3-1
3.1. FRONT PANEL OPERATING PROCEDURE ...........................................................................................3-1
3.2. 6622A SERIES T-OPTION RESISTANCE/THERMOMETRY MEASUREMENT BRIDGE............3-1
3.3. TITLE SCREEN ...............................................................................................................................................3-5
3.4. MAIN MENU.....................................................................................................................................................3-5
3.4.1. <Measure> MENU Fn-1 (Main)....................................................................................................................3-5
3.4.1.1. <Measure> MENU Fn-1 (MAIN) Page 1 of 3....................................................................................3-6
3.4.1.2. <Measure> MENU Fn-1 (MAIN) Page 2 of 3....................................................................................3-6
3.4.1.3. <Measure> MENU Fn-1 (MAIN) Page 3 of 3....................................................................................3-6
3.4.2. <Setup> MENU Fn-1 (Setup_MAIN)...........................................................................................................3-7
3.4.3. <Profiles> MENU Fn-1 (Profiles MAIN).....................................................................................................3-7
3.4.4. <Edit> MENU (Probe) Fn-2 (Edit MAIN)....................................................................................................3-7
3.4.4.1. <IPTS 68> MENU Fn-1 (Edit MAIN)................................................................................................3-8
3.4.4.2. <ITS 90> MENU Fn-2 (Edit MAIN) ..................................................................................................3-9
3.4.4.3. <IEC 751> MENU Fn-3 (Edit MAIN)..............................................................................................3-11
3.4.4.4. <Probe Set> MENU Fn-4 (Edit MAIN)............................................................................................3-11
3.5. MEASUREMENT OPERATION GUIDE..................................................................................................3-13
3.5.1. Thermometry Measurement Mode ..............................................................................................................3-13
3.6. BRIDGEWORKS-C DATA ACQUISITION SOFTWARE.....................................................................3-15
4. MAINTENANCE........................................................................................................4-1
4.1. INTRODUCTION.............................................................................................................................................4-1
4.2. TEMPERATURE RATIO VERIFICATION ...............................................................................................4-1
4.2.1.PURPOSE.......................................................................................................................................................4-1
4.2.2. EQUIPMENT REQUIRED...........................................................................................................................4-1
4.3. MODEL 6622A BRIDGE WITH T-OPTION...............................................................................................4-2
4.3.1. Set Up .............................................................................................................................................................4-2
4.3.2. Inputs-Outputs Verification ...........................................................................................................................4-2

OM6622A-T-B1-00
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LIST OF FIGURES
FIGURE 3-1: MENU TREE – MEASURE/SOFCAL .....................................................................................................3-2
FIGURE 3-2 : MENU TREE – SETUP (RESISTOR) .....................................................................................................3-3
FIGURE 3-3 : MENU TREE – SETUP (PROBE) ...........................................................................................................3-4
FIGURE 3-4 : REAR PANEL CONNECTIONS – PRT/SPRT.....................................................................................3-14

OM6622A-T-B1-00
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LIST OF TABLES
TABLE 3-1 : RECOMMENDED TEMPERATURE MEASUREMENT TEST SETUP............................................3-13

Section 1
08 November 2022
2 November, 2016
1-1
1. INTRODUCTION
1.1. SCOPE
This document describes the operation additional temperature functionality provided by the T-
Option in the 6622A Series of Automatic DCC Resistance Bridge.
1.2. GENERAL DESCRIPTION
The model 6622A Series T-Option is and software and embedded software upgrade to your 6622A
Series bridge. This upgrade includes functions and features that optimize primary temperature
measurement, and calibration using your 6622A. These functions primarily include measurement
operation at higher speed and temperature conversion. The installation of the T-Option does not
change to resistance operation of the 6622A.

Section 2
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2 November, 2016
2-1
2. PERFORMANCE SPECIFICATIONS
2.1. 6622A SERIES T-OPTION TEMPERATURE MEASUREMENT
SPECIFICATION
Measurement Specifications
(12 Month)
6622A &6622A-XR 6622A-XP & 6622A-XPR
6622A-HV
Total Measurement Range: 0.001Ω⇔100Ω
24 Hour
Range
Stability
RS
1
Ω
0.08
Ω
> Rx < 0.8
Ω
0.8
Ω
> Rx< 6.3
Ω
6.3
Ω
> Rx< 13.4
Ω
13.4
Ω
> Rx< 107.5
Ω
± 1.2 µΩ/Ω ± 0.2 µΩ/Ω ± 0.2 µΩ/Ω ± 0.2 µΩ/Ω < ± 0.06 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω < ± 0.04 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω <±0.04 µΩ/Ω
0.8m
Ω
> Rx < 0.008
Ω
0.008
Ω
> Rx< 0.08
Ω
For Below Rows Only
± 100 µΩ/Ω ± 10 µΩ/Ω < Specifications for 6622A & 6622A-XR
± 50 µΩ/Ω ± 5 µΩ/Ω < Specifications for 6622A-XP & 6622A-XR
± 50 µΩ/Ω ± 5 µΩ/Ω < Specifications for 6622A-HV
Total Measurement Range: 1
Ω
⇔
1k
Ω
24 Hour
Range
Stability
RS
10
Ω
1
Ω
> Rx < 8
Ω
8
Ω
> Rx< 63
Ω
63
Ω
> Rx< 134
Ω
134
Ω
> Rx< 1075
Ω
± 1.2 µΩ/Ω ± 0.2 µΩ/Ω ± 0.2 µΩ/Ω ± 0.2 µΩ/Ω < ± 0.06 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω < ± 0.04 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω < ± 0.04 µΩ/Ω
Total Measurement Range: 10
Ω
⇔
10k
Ω
24 Hour
Range
Stability
RS
100
Ω
10
Ω
> Rx< 80
Ω
80
Ω
> Rx< 630
Ω
630
Ω
> Rx< 1340
Ω
1.34 k
Ω
> Rx< 10.75 k
Ω
± 1.2 µΩ/Ω ± 0.2 µΩ/Ω ± 0.2 µΩ/Ω ± 0.4 µΩ/Ω < ± 0.06 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω ± 0.2 µΩ/Ω < ± 0.04 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω ± 0.2 µΩ/Ω < ± 0.04 µΩ/Ω
Total Measurement Range: 100
Ω
⇔
100k
Ω
24 Hour
Range
Stability
RS
1 k
Ω
100
Ω
> Rx< 800
Ω
800
Ω
> Rx< 6.3 k
Ω
6.3 k
Ω
> Rx< 13.4 k
Ω
13.4 k
Ω
> Rx< 107.5 k
Ω
± 1.2 µΩ/Ω ± 0.2 µΩ/Ω ± 0.2 µΩ/Ω ± 1.6 µΩ/Ω < ± 0.06 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω ± 1.0 µΩ/Ω < ± 0.04 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.1 µΩ/Ω ± 1.0 µΩ/Ω < ± 0.04 µΩ/Ω
Total Measurement Range: 1k
Ω
⇔
1M
Ω
24 Hour
Range
Stability
RS
10 k
Ω
1 k
Ω
> Rx< 8 k
Ω
8 k
Ω
> Rx< 63 k
Ω
63 k
Ω
> Rx< 134 k
Ω
134 k
Ω
> Rx< 1.075 M
Ω
± 1.2 µΩ/Ω ± 0.2 µΩ/Ω ± 0.4 µΩ/Ω NA in T-Option < ± 0.10 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.3 µΩ/Ω NA in T-Option < ± 0.06 µΩ/Ω
± 0.8 µΩ/Ω ± 0.1 µΩ/Ω ± 0.3 µΩ/Ω NA in T-Option < ± 0.06 µΩ/Ω
1 - Specifications are based on 20 second reversal rate, 100 µW Rspower dissipation and temperature of 23 °C ± 3 °C.
2 - Lowest possible RxRatio is defined as Rxlow = Rsx .08 and Maximum possible RxRatio is determined by Rxhigh = Rs x 107.5.
3 - Maximum Upper Range is limited to 134 kΩ for the T-Option on all models with the maximum Rsallowed as 10 kΩ.
4 - Ranges below 1 Ohm are only available for a Rsof 1Ω.

Section 2
08 November 2022
2 November, 2016
2-2
Notes:
1. The Relative Uncertainty specification is that measurement uncertainty of the 6622A
Series Automatic DCC Resistance Bridges and 2 times the standard deviation of the
sample set, but does not include the uncertainty of the Reference Standards. This
Relative Uncertainty specification is applicable after the measurement has stabilized
for the applicable Itest current applied to Rx, and for the reversal rate that is greater
than or equal to those in the recommended test setups in Section 3. To calculate the
Total Uncertainty of the Resistance Measurement, add the uncertainty of the
Reference Standard to the Relative Uncertainty.
2. The Relative Uncertainty specification is based on the Resistance Under Test being
connected across the Rx terminals and the Reference Standard being connected
across the Rs terminals.

Section 3
08 November 2022
2 November, 2016
3-1
3. OPERATING INSTRUCTIONS
3.1. FRONT PANEL OPERATING PROCEDURE
The 6622A Series T-Option provides temperature related option to the manual operation from the
front panel. The BridgeWorks-C Software User's Manual contains the operating instructions for
fully automatic software control of the model 6622A Series T-Option via its computer system.
3.2. 6622A SERIES T-OPTION RESISTANCE/THERMOMETRY MEASUREMENT
BRIDGE
The front panel operation of the model 6622A with the T-Option does not change for resistance
measurement. All relevant in depth information on this mode of operation can be found in the
OM6622A Operator’s manual. The following information describes typical displays and
corresponding menu descriptions for associated function keys for the additional functionality
provided with the T-Option. Figures 3-1, 3-2, and 3-3 illustrate the model 6622A Series menu tree
with the T-Option installed.

Section 3
08 November 2022
2 November, 2016
3-2
Figure 3-1: Menu Tree – MEASURE/SOFCAL
Ratio
Ohms
Meas OFF
Meas ON
Update 1
Update 2
Update 4
Power x1
Power x2
No Filter
Decimation
N Average
Normal
PPM
Delta
PPM SP
Delta SP
0.001ppm
0.01ppm
0.1ppm
1.0ppm
10.0ppm
Quick OFF
Quick ON
GPIB
Coef Set
Diagnostic
P.O.S.T.
Filter
Datum
Password
Edit
OK
Address
Mode
OK
Monitor
Dac
Turns
Sign
Volts
Range
Mode
Average N
Decimation
Speed
Cur ramp
Volt ramp
Ns
NORMAL
Measure
Setup
Sofcal
Edit
OK
Celsius
Farenhiet
Kelvin

Section 3
08 November 2022
2 November, 2016
3-3
Figure 3-2 : Menu Tree –SETUP (Resistor)
Edit
OK
Normal
Low Ohms
Low Ohms
Edit
OK
6623-2A
6623/9923
Custom
Edit
OK
Measure
Setup
Sofcal
Profiles
Edit
Edit
OK
Scale
Resistor
Probes

Section 3
08 November 2022
2 November, 2016
3-4
Figure 3-3 : Menu Tree –SETUP (Probe)
Edit
OK
IPTS-68
ITS-90
IEC-751
Edit
OK
6623-2A
6623/9923
Custom
- Coeff
Edit Neg
Measure
Setup
Sofcal
Profiles
Edit
Edit
OK
Scale
Probe Set
+ Coeff
Edit Pos
Edit
OK
Edit
OK
Resistor
Probes

Section 3
08 November 2022
2 November, 2016
3-5
3.3. TITLE SCREEN
At power ON the model 6622A will start its internal power on self-test programming and
display its opening banner. You will see a “/T” designation after the model number and
variant indicating that the T-Option is installed.
3.4. MAIN MENU
The main menu with the T-Option installed is identical to the 6622A Series without the
option installed with the exception that there is additional available information.
Of the additional information available the most pertinent is the units can be in thermometry
based units and the mode can indicate a temperature scale.
3.4.1. <Measure> MENU Fn-1 (Main)
The measure menu has additional functionality included to allowing for additional
selection of units.
Function key <Fn-1>, <Measure> will select the Measure sub-functions menu to
control the measurement functions of the bridge.
6622A-XR/T
ITS-
Celsius

Section 3
08 November 2022
2 November, 2016
3-6
3.4.1.1. <Measure> MENU Fn-1 (MAIN) Page 1 of 3
Upgraded functions (menu page 1 of 3).
Function key <Fn-1> toggles through the set of available measurement units
for the displayed result. For resistance mode the displayed result can have
units of <Ratio> or <Ohms>. For resistance mode the displayed result can
have units of <Celsius>, <Fahrenheit>, <Kelvin>, <Ratio> or <Ohms>. The
active engineering units will be displayed in the <Fn-1> function key
descriptor position.
3.4.1.2. <Measure> MENU Fn-1 (MAIN) Page 2 of 3
Upgraded functions (menu page 2 of 3). None
3.4.1.3. <Measure> MENU Fn-1 (MAIN) Page 3 of 3
Upgraded functions (menu page 3 of 3). None

Section 3
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2 November, 2016
3-7
3.4.2. <Setup> MENU Fn-1 (Setup_MAIN)
Function key <Fn-3>, <Probes>, allows you to toggle between “Resistors” and
“Probes”.
3.4.3. <Profiles> MENU Fn-1 (Profiles MAIN)
Profiles allow the user to save resistor configuration files and with the T-option
installed, probe files can be stored as well. 15 resistor and 5 probe profiles are
available. The profile menu otherwise operates the same as described in the
Operator’s Manual OM6622A.
3.4.4. <Edit> MENU (Probe) Fn-2 (Edit MAIN)
The <Edit> menu will either be identical to the standard menu seen in the 6622A
Series bridge, or be as described below depending on the selection of the
Resistors/Probes mode toggle key in the <Setup> menu.
Mode: RS Ω:
Display: RS SN:
Update: R0:
Filter: PR SN:
Power: RRate:
A:
══════════╤══════════╤═════════┬──────────
IPTS 68 │ITS 90 │IEC 751 │Probe Set
Probes
ITS-
Celsius
Probes File:
Probe. 7326-100

Section 3
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2 November, 2016
3-8
Function Key <Fn-1> ,<IPTS 68>, allows entry to the IPTS-68 measurement menu
and enables the IPTS-68 coefficients for the probe to be viewed and or edited.
Function Key <Fn-2> ,<ITS 90>, allows entry to the ITS-90 measurement menu and
enables the ITS-90 coefficients for the probe to be viewed and or edited.
Function Key <Fn-3> ,<IEC 751>, allows entry to the IEC-751 measurement menu
and enables the IEC-751 coefficients for the probe to be viewed and or edited.
Function Key <Fn-4> ,<Probe Set>, allows entry to the Probe set menu and enables
the test values for the probe to be viewed and or edited.
3.4.4.1. <IPTS 68> MENU Fn-1 (Edit MAIN)
A:
B:
b4:
e4:
──────────┬──────────┬─────────┬──────────
Edit │Ok │ │
Press <Edit> and use arrow keys to move the highlight to the data line to be
changed. Modify data and press <Ok>.
When <Edit> is pressed the PASSWORD CHECK display menu is activated.
Before the selected coefficient can be changed the correct password must be entered.
If an incorrect password is entered, the error message "Invalid Password" will be
displayed and the edit session will be terminated.

Section 3
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3-9
3.4.4.2. <ITS 90> MENU Fn-2 (Edit MAIN)
-Coeff: <Range 1> +Coeff: <Range 6>
a1: a6:
b1: b6:
c1: c6:
c2: d:
──────────┬══════════┬─────────┬══════════
-Coeff │Edit Neg │+Coeff │Edit Pos
Function Key <Fn-1> ,<-Coeff>, selects from the ITS90 set of temperature ranges:
<Range 1> := <13.8 K to 273.16 K> : screen display ‘-259C to 0C’
<Range 2> := <24.5 K to 273.16 K> : screen display ‘-279C to 0C’
<Range 3> := <54.4 K to 273.16 K> : screen display ‘-219C to 0C’
<Range 4> := <83.8 K to 273.16 K> : screen display ‘-189C to 0C’
<Range 5> := <234.3 K to 302.91 K> : screen display ‘-39C to 30C’
When <Range 5> is selected for <-Coeff> the menu options <+Coeff> and <Edit
Pos> are removed from the display screen along with the display of “+Coeff”
values.
Function key <Fn-3>, <-Coeff>, selects from the ITS90 set of temperature ranges:
<Range 6> := <273.15 K to 1234.93 K> : screen display ‘0C to 962C’
<Range 7> := <273.15 K to 933.47 K> : screen display ‘0C to 660C’
<Range 8> := <273.15 K to 692.68 K> : screen display ‘0C to 420C’
<Range 9> := <273.15 K to 505.08 K> : screen display ‘0C to 232C’
<Range 10> := <273.15 K to 429.75 K> : screen display ‘0C to 157C’
<Range 11> := <273.15 K to 302.91 Κ> : screen display ‘0C to 30C’
Function Key <Fn-2> ,<Edit Neg>, allows selection of the edit menu to enter and
view the ITS90 probe (negative degree Celsius) temperature coefficients.
Function Key <Fn-4> ,<Edit Pos>, allows selection of the edit menu to enter and
view the ITS90 probe (positive degree Celsius) temperature coefficients.

Section 3
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3-10
When either the <Edit Neg> or <Edit Pos> key is pressed the PASSWORD
CHECK display menu is activated.
Before the selected set of coefficients can be changed the correct password must be
entered.
If an incorrect password is entered, the error message "Invalid Password" will be
displayed and the edit session will be terminated.
3.4.4.2.1. <Edit Neg> MENU Fn-2 (ITS90 Edit MAIN)
Neg Coeff Range : <-259C to 0C>
a1:
b1:
c1:
c2:
c3:
──────────┬──────────┬─────────┬──────────
Edit │Ok │ │Screen 2
Press <Edit> and use arrow keys to move the highlight to the data line to be changed.
Modify data and press <Ok>.
Neg Coeff Range : <-259C to 0C>
c4:
c5:
──────────┬──────────┬─────────┬──────────
Edit │Ok │ │Screen 2
Press <Edit> and use arrow keys to move the highlight to the data line to be changed.
Modify data and press <Ok>.

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3-11
3.4.4.2.2. < Edit Pos> MENU Fn-4 (ITS90 Edit MAIN)
Pos Coeff Range: <0C to 962C>
a6:
b6:
c6:
d:
──────────┬──────────┬─────────┬──────────
Edit │Ok │ │
Press <Edit> and use arrow keys to move the highlight to the data line to be changed.
Modify data and press <Ok>.
3.4.4.3. <IEC 751> MENU Fn-3 (Edit MAIN)
A:
B:
C:
──────────┬──────────┬─────────┬──────────
Edit │Ok │ │
Press <Edit> and use arrow keys to move the highlight to the data line to be
changed. Modify data and press <Ok>.
When <Edit> is pressed the PASSWORD CHECK display menu is activated.
Before the selected coefficient can be changed the correct password must be entered.
If an incorrect password is entered, the error message "Invalid Password" will be
displayed and the edit session will be terminated.
3.4.4.4. <Probe Set> MENU Fn-4 (Edit MAIN)
Resistance RS:
Serial No. RS:
R0 Probe (or R(tpw)):
Ser. No. Probe:
RRate:
Test Current (mA):
──────────┬──────────┬─────────┬──────────
Edit │Ok │ │Screen 2