Guildline 9340 Series User manual

TECHNICAL MANUAL
FOR
MODEL 9340
PRECISION DECADE RESISTANCE BOXES
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.
TM9340-G-00
15 August, 2019

TM9340-G-00
15 August, 2019
i
TABLE OF CONTENTS
1. INTRODUCTION.................................................................................................. 1-1
1.1. FUNCTIONAL DESCRIPTION..........................................................................................................1-1
1.2. FEATURES............................................................................................................................................1-2
1.3. GENERAL THEORY...........................................................................................................................1-2
2. SPECIFICATIONS................................................................................................ 2-1
3. RECEIPT AND INSPECTION............................................................................... 3-1
3.1. GENERAL.............................................................................................................................................3-1
3.2. PACKAGING........................................................................................................................................3-1
4. OPERATION AND MAINTENANCE .................................................................... 4-1
4.1. OPERATION.........................................................................................................................................4-1
4.2. MAINTENANCE AND CALIBRATION ...........................................................................................4-1
4.3. REPAIR..................................................................................................................................................4-1
5. PARTS LISTS ...................................................................................................... 5-1
6. DRAWINGS.......................................................................................................... 6-1

TM9340-G-00
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ii
TABLE OF FIGURES
FIGURE 1-1: 9340 SERIES OF RESISTANCE DECADE BOXES....................................................................1-1
FIGURE 1-2: DECADE BOX SCHEMATIC DIAGRAM...................................................................................1-2

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iii
LIST OF TABLES
TABLE 2-1: MODEL SELECTION TABLE........................................................................................................2-2
TABLE 2-2: MODEL SPECIFICATIONS............................................................................................................2-4
TABLE 5-1: GENERAL ASSEMBLY PARTS LISTS.........................................................................................5-1

Section 1
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1-1
1. INTRODUCTION
1.1. FUNCTIONAL DESCRIPTION
The Model 9340 is a Family of Precision Decade Resistance Boxes. It combines
techniques established at Guildline in the construction and stabilizing of resistors, and
low uncertainty switching techniques used in many of our instruments. The Model 9340
Series is available in decade range of from 3 to 7 decades. Each range is available in the
full resistance range of from 0.01 steps to 1 Tsteps.
Figure 1-1: 9340 Series of Resistance Decade Boxes

Section 1
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1-2
1.2. FEATURES
The main features of the Model 9340 series are:
•Resistance range from .01 to 11 T
•Accuracy better than 0.01%
•Temperature coefficient less than 5 ppm/oC
•Zero resistance less than 1 m/decade
•High reliability switches noted for 1,000,000 cycles
1.3. GENERAL THEORY
The 9340 series of decade boxes consist of 3, 4, 5, 6 or 7 decades of resistors switched in
a series circuit. Figure 1-1 illustrates schematically the circuit of the Model 9347. The
Models 9343, 9344, 9345, 9346 and 9347 are identical except for the number of decades.
The value of the resistances are related to the total resistance of the unit. These values
are listed in Table 2-2.
Figure 1-2: Decade Box Schematic Diagram
R1
R2
R3
R4
R5
R6
R7
RED
BLK
GRN
R1
R2
R3
R4
R5
R6
R7
R1
R2
R3
R4
R5
R6
R7
R1
R2
R3
R4
R5
R6
R7
R1
R2
R3
R4
R5
R6
R7
R1
R2
R3
R4
R5
R6
R7
R1
R2
R3
R4
R5
R6
R7
R1
R2
R3
R4
R5
R6
R7
R1
R2
R3
R4
R5
R6
R7
R1
R2
R3
R4
R5
R6
R7
Outer Case

Section 2
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2-1
2. SPECIFICATIONS
Number of Decades Available: 3, 4, 5, 6 & 7
Zero Resistance (Typical): 0.0030 0.001 ohm per decade, after settling
Breakdown Voltage: 1500 Volts to case.
Dimensions: 9343 11.8cm X 23.3cm X 10.3cm high
9344 11.8cm X 29.0cm X 10.3cm high
9345 11.8cm X 34.7cm X 10.3cm high
9346 11.8cm X 40.5cm X 10.3cm high
9347 11.8cm X 46.1cm X 10.3cm high
Weight: 9343 2.7 kg
9344 3.25 kg
9345 3.9 kg
9346 4.4 kg
9347 5.1 kg

Section 2
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2-2
Table 2-1: Model Selection Table
Model
Number
# of
Decades
Minimum
Step (Ω’s)
Maximum
Value(Ω’s)
Model
Number
# of
Decades
Minimum
Step (Ω’s)
Maximum
Value(Ω’s)
9343/10
3
0.01
11.10
9344/100
4
0.01
111.1
9343/100
3
0.1
111.0
9344/1k
4
0.1
1.111 k
9343/1k
3
1
1.110 k
9344/10k
4
1
11.11 k
9343/10k
3
10
11.10 k
9344/100k
4
10
111.1 k
9343/100k
3
100
111.0 k
9344/1M
4
100
1.111 M
9343/1M
3
1k
1.110 M
9344/10M
4
1k
11.11 M
9343/10M
3
10k
11.10 M
9344/100M
4
10k
111.1 M
9343/100M
3
100k
111.0 M
9344/1G
4
100k
1.111 G
9343/1G
3
1M
1.110 G
9344/10G
4
1M
11.11 G
9343/10G
3
10M
11.10 G
9344/100G
4
10M
111.1 G
9343/100G
3
100M
111.0 G
9344/1T
4
100M
1.111 T
9343/1T
3
1G
1.110T
9344/10T
4
1G
11.11 T
9343/10T
3
10G
11.10 T
Model
Number
# of
Decades
Minimum
Step (Ω’s)
Maximum
Value(Ω’s)
Model
Number
# of
Decades
Minimum
Step (Ω’s)
Maximum
Value(Ω’s)
9345/1k
5
0.01
1.1111 k
9346/10k
6
0.01
11.111 1 k
9345/10k
5
0.1
11.111 k
9346/100k
6
0.1
111.111 k
9345/100k
5
1
111.11 k
9346/1M
6
1
1.111 11 M
9345/1M
5
10
1.1111 M
9346/10M
6
10
11.111 1 M
9345/10M
5
100
11.111 M
9346/100M
6
100
111.111 M
9345/100M
5
1k
111.11 M
9346/1G
6
1k
1.111 11 G
9345/1G
5
10k
1.1111 G
9346/10G
6
10k
11.111 1 G
9345/10G
5
100k
11.111 G
9346/100G
6
100k
111.111 G
9345/100G
5
1M
111.11 G
9346/1T
6
1M
1.111 11 T
9345/1T
5
10M
1.1111 T
9346/10T
6
10M
11.111 1 T
9345/10T
5
100M
11.111 T

Section 2
TM9340-G-00
15 August, 2019
2-3
Model
Number
# of
Decade
s
Minimum
Step (Ω’s)
Maximum
Value(Ω’s)
9347/100k
7
0.01
111.111 1 k
9347/1M
7
0.1
1.111 111 M
9347/10M
7
1
11.111 11 M
9347/100M
7
10
111.111 1 M
9347/1G
7
100
1.111 111 G
9347/10G
7
1k
11.111 11 G
9347/100G
7
10k
111.111 1 G
9347/1T
7
100k
1.111 111 T
9347/10T
7
1M
11.111 11 T

Section 2
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2-4
Table 2-2: Model Specifications
MSD
(Most Significant
Dial)
Maximum
Dial Output
(x10 Setting)
Coefficients
Maximum Limits
Stability
Temperatur
e
Power
Power
Amperes
Volts
(ohms)
(± ppm/yr)
(± ppm/C)
(±
ppm/mW)
(W/step)
(Adc/Step)
(volts/step)
0.01
0.1 Ω
500
5
0.2
0.5
7
0.07
0.1
1 Ω
50
5
0.2
0.5
2
0.2
1
10 Ω
20
5
0.2
0.5
0.7
0.7
10
100 Ω
10
5
0.2
0.5
0.2
2
100
1 k Ω
10
5
0.2
0.5
0.07
7
1 k
10 k Ω
10
5
0.2
0.5
0.02
20
10 k
100 kΩ
10
5
0.2
0.5
0.007
70
100 k
1 MΩ
10
5
0.2
0.5
0.002
200
1 M
10 MΩ
10
5
0.2
0.5
0.7mA
700
10 M
100 MΩ
20
20
1
0.1
0.1mA
1000
100 M
1 GΩ
50
20
50
0.01
0.01mA
1000
1 G
10 GΩ
500
100
1*
0.001
1.5uA
1500
10 G
100 GΩ
1000
250
1*
0.0001
0.15uA
1500
100 G
1 TΩ
2000
-250
-85*
N/A
0.015uA
1500
1 T
10 TΩ
3000
-2500
-110*
N/A
0.0015uA
1500

Section 2
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2-5
Accuracy –Accuracy is based on the most significant dial (MSD) that is used for the resistance
output. The accuracy of the MSD dial used for the resistance output determines the accuracy of
all the dial settings for the resistance output desired. Accuracy for
1 MΩand below is based on subtraction of Zero Resistance (nulling out all dial zero resistances
and lead resistance).
MSD (MOST SIGNIFICANT DIAL)USED
Accuracy
10 m to 1M
10M & 100M
1G
10G
100G
1T
0.01% + 2
mΩ
0.1%
1%
2%
5%
6%
Examples show a 9346 Series models dials set to various outputs to show
accuracy calculations.
Example 1 –A 9346/10k Decade Standard is set to 7.96912 kΩ. The most significant dial would
be 1k. Since the 1k Dial (set to 7 Position) is most significant dial used, the accuracy would be
0.01% + 2 mΩ for all the 9340 Dial Settings for the entire resistance output.
Example 2 –A 9346/100M Decade Standard is set to 23.1573 MΩ. The most significant dial
would be the 10 MΩDial. For this output, this dial would be set to the 2 Position with remaining
dials set to values as shown. Since the 10 ΩM dial is the most significant dial used, the accuracy
would be 0.1% for all the 9340 Dial Settings for the entire resistance output.
Example 3 –A 9346/1T Decade Standard is set to 100.59 GΩ. Since the 1 TΩDial was not used
this resistance requires only the 100 GΩdials and below. The 100 GΩis the most significant dial
used so the accuracy would be 5% for all the 9340 Dial Settings for the entire resistance output. If
the 1 TΩDial were used as the most significant dial, the accuracy would change to 6% for the
output needed.

Section 3
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3-1
3. RECEIPT AND INSPECTION
3.1. GENERAL
Remove the instrument from its shipping container. The instrument was thoroughly
tested and inspected before shipment and should be free from any electrical or
mechanical damage when received. Nevertheless, you should perform an inspection for
physical damage, ensure all items on the packing list are present and test the instrument,
electrically, as soon as possible after receipt. Refer to the warranty card at the front of
the manual if any damage or deficiencies are found.
3.2. PACKAGING
We recommend that the shipping container be retained for future storage or transportation
of this instrument.

Section 4
TM9340-G-00
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4-1
4. OPERATION AND MAINTENANCE
4.1. OPERATION
The Model 9340 series of decade boxes are calibrated at the front panel red and black
binding posts. The accuracy specification is determined as the resistance value offset
from the zero selection resistance value.
Above 1 kselection the zero resistance value is negligible. Below the 1 kselection
the zero resistance value of the decade box needs to be taken into consideration to effect
the specified accuracy.
The green binding post case ground terminal may be used to reduce susceptibility to
electromagnetic and electrostatic influences.
4.2. MAINTENANCE AND CALIBRATION
The Model 9340 series of decade boxes require minimal maintenance other than periodic
calibration and ensuring the front panel terminals are clean. Cleaning may be
accomplished by wiping with ISO-propanol and allowing to dry over a 12 hour period
before use.
Calibration should be performed using a 6½ Digital Multimeter with a minimum
accuracy specification of better than ±20 ppm over the range of 1 to 10 M. A
suitably accurate Teraohometer is required for models with resistance ranges above 1
G.
4.3. REPAIR
Although the Model 9340 series has been designed to operate for may years without the
need of repairs, circumstances beyond the control of the manufacturer may require
replacement of specific resistor elements or entire decade switch assemblies.
The screws in the top panel may be removed to allow access to the switching circuitry by
carefully lifting the top panel assembly out of the bottom portion of the enclosure.
Careful soldering so as not to overheat the switch terminals is required when replacing
specific resistance elements. It is recommended that the defective resistance elements be
cut out of the circuit and that the replacement element be attached to a short portion of
the element lead left in contact with the switch terminals. This method will reduce any
effects from applying heat to the circuit elements.
It is recommended that the decade box be returned to Guildline Instruments if it should
be necessary to replace an entire decade switch.

Section 5
TM9340-G-00
15 August, 2019
5-1
5. PARTS LISTS
Model
General Assembly
Parts List
Model
General Assembly
Parts List
9343/10
18680.01.02-PL
9344/100
18697.01.02-PL
9343/100
18680.02.02-PL
9344/1k
18697.02.02-PL
9343/1k
18680.03.02-PL
9344/10k
18697.03.02-PL
9343/10k
18680.04.02-PL
9344/100k
18697.04.02-PL
9343/100k
18680.05.02-PL
9344/1M
18697.05.02-PL
9343/1M
18680.06.02-PL
9344/10M
18697.06.02-PL
9343/10M
18680.07.02-PL
9344/100M
18697.07.02-PL
9343/100M
18680.08.02-PL
9344/1G
18697.08.02-PL
9343/1G
18680.09.02-PL
9344/10G
18697.09.02-Pl
9343/10G
18680.10.02-PL
9344/100G
18697.10.02-PL
9343/100G
18680.11.02-PL
9344/1T
18697.11.02-PL
9343/1T
18680.12.02-PL
9344/10T
18697.12.02-PL
9343/10T
18680.13.02-PL
9345/1k
18630.01.02-PL
9346/10k
18660.01.02-PL
9345/10k
18630.02.02-PL
9346/100k
18660.02.02-PL
9345/100k
18630.03.02-PL
9346/1M
18660.03.02-PL
9345/1M
18630.04.02-PL
9346/10M
18660.04.02-PL
9345/10M
18630.05.02-PL
9346/100M
18660.05.02-PL
9345/100M
18630.06.02-PL
9346/1G
18660.06.02-PL
9345/1G
18630.07.02-PL
9346/10G
18660.07.02-PL
9345/10G
18630.08.02-PL
9346/100G
18660.08.02-PL
9345/100G
18630.09.02-PL
9346/1T
18660.09.02-PL
9345/1T
18630.10.02-PL
9346/10T
18660.10.02-PL
9345/10T
18630.11.02-PL
9347/100k
18656.01.02-PL
9347/1M
18656.02.02-PL
9347/10M
18656.03.02-PL
9347/100M
18656.04.02-PL
9347/1G
18656.05.02-PL
9347/10G
18656.06.02-PL
9347/100G
18656.07.02-PL
9347/1T
18656.08.02-PL
9347/10T
18656.09.02-PL
Table 5-1: General Assembly Parts Lists

Section 5
TM9340-G-00
15 August, 2019
5-2
Decade Switch Parts List
0.01 Decade 18675.01.02-PL
0.1 Decade 18675.02.02-PL
1 Decade 18675.03.02-PL
10 Decade 18675.04.02-PL
100 Decade 18675.05.02-PL
1k Decade 18675.06.02-PL
10 kDecade 18675.07.02-PL
100 kDecade 18675.08.02-PL
1 MDecade 18675.09.02-PL
10 MDecade 18675.10.02-PL
100 MDecade 18675.11.02-PL
1 GDecade 18675.12.02-PL
10 GDecade 18675.13.02-PL
100 GDecade 18675.14.02-PL
1 T Decade 18675.15.02-PL

Section 6
TM9340-G-00
15 August, 2019
6-1
6. DRAWINGS
Decade Box Drawing
9343 Decade Box General Assembly 18680.01.02
9344 Decade Box General Assembly 18697.01.02
9345 Decade Box General Assembly 18630.01.02
9346 Decade Box General Assembly 18660.01.02
9347 Decade Box General Assembly 18656.01.02