
Introduction and Specifications
Specifications
1
1-11
Resistance
Nominal
Absolute Uncertainty of Characterized Value
±
5°C from calibration temperature [Note 1]
Relative Uncertainty
±
1°C
Value
24 Hours
90 Days
180 Days
1 Year
24 Hours
90 Days
Ω
±
ppm
±
ppm
0
1
1.9
10
19
100
190
1k
1.9k
10k
19k
100k
190k
1M
1.9M
10M
19M
100M
50
µΩ
85
85
26
24
15
15
11
11
9
9
11
11
16
17
33
43
110
50
µΩ
95
95
28
26
17
17
12
12
11
11
13
13
18
19
37
47
120
50
µΩ
100
100
30
28
18
18
13
13
12
12
14
14
20
21
40
50
125
50
µΩ
110
110
33
31
20
20
15
15
14
14
16
16
23
24
46
55
130
50
µΩ
32
25
5
4
2
2
2
2
2
2
2
2
2.5
3.5
10
20
50
50
µΩ
40
33
8
7
4
4
3.5
3.5
3.5
3.5
3.5
3.5
5
6
14
24
60
Secondary Performance Specifications and Operating Characteristics
Included in Uncertainty Specifications
Nominal
Stability
Temperature
Coefficient
[Note 2]
Full
Spec
Load
Maximum
Maximum
Difference
of
Two-Wire Adder
active
compensation
[Note 4]
Value
±
1°C
24 Hours
10°-40°C
0°-10°C
and
Range
[Note 3]
Peak
Current
Characterized
to Nominal
Lead
Resistance
40°-50°C
Value
0.1
Ω
1
Ω
Ω
±
ppm
±
ppm/°C
mA
mA
±
ppm
±
m
Ω
0
8-500
500
2
4
1
32
4
5
8-100
700
500
2
4
1.9
25
6
7
8-100
500
500
2
4
10
5
2
3
8-11
220
300
2
4
19
4
2
3
8-11
160
300
2
4
100
2
2
3
8-11
70
150
2
4
190
2
2
3
8-11
50
150
2
4
1k
2
2
3
1-2
22
150
10
15
1.9k
2
2
3
1-1.5
16
150
10
15
10k
2
2
3
100-500
µ
A
7
150
50
60
19k
2
2
3
50-250
µ
A
5
150
100
120
100k
2
2
3
10-100
µ
A
1
150
190k
2
2
3
5-50
µ
A
500
µ
A
150
1M
2.5
2.5
6
5-20
µ
A
100
µ
A
200
1.9M
3.5
3
10
2.5-10
µ
A
50
µ
A
200
10M
10
5
20
.5-2
µ
A
10
µ
A
300
19M
20
8
40
.25-1
µ
A
5
µ
A
300
100M
50
12
100
50-200 nA
1
µ
A
500
Notes:
1. Specifications apply to displayed value. 4-wire connections, except 100 m
Ω
.
2. Temperature coefficient is an adder to uncertainty specifications that does not apply unless operated more than 5°C from calibration
temperature, or calibrated outside the range 19°C to 24°C. Two examples:
a) Calibrate at 20°C: Temperature coefficient adder is not required unless operated below 15°C or above 25°C.
b) Calibrate at 26°C: Add 2°C temperature coefficient adder. Additional temperature coefficient adder is not required unless operated below
21°C or above 31°C.
3. Refer to current derating factors table for loads outside of this range.
4. Active two-wire compensation may be selected for values less than 100 k
Ω
, with either the front panel
or the meter input terminals as
reference plane. Active compensation is limited to 11 mA load, and to 2V burden. Two wire compensation can be used only with
Ω
meters that
source continuous (not pulsed) dc current.
Summary of Contents for 5725A
Page 2: ......
Page 6: ...5725A Instruction Manual iv...
Page 8: ...5725A Instruction Manual vi...
Page 10: ...5725A Instruction Manual viii...
Page 12: ......
Page 18: ...5725A Instruction Manual 1 2...
Page 34: ...5725A Instruction Manual 1 18...
Page 36: ...5725A Instruction Manual 2 2...
Page 44: ...5725A Instruction Manual 2 10...
Page 46: ...5725A Instruction Manual 3 2...
Page 62: ...5725A Instruction Manual 4 4 Figure 4 1 5725A Overall Block Diagram...
Page 78: ...5725A Instruction Manual 4 20 aq20f eps Figure 4 3 Current Amplifier Assembly Block Diagram...
Page 96: ...5725A Instruction Manual 4 38...
Page 98: ...5725A Instruction Manual 5 2...
Page 100: ...5725A Instruction Manual 5 4...
Page 102: ...5725A Instruction Manual 6 2...
Page 118: ...5725A Instruction Manual 7 2...
Page 126: ...5725A Instruction Manual 7 10...
Page 128: ...5725A Instruction Manual 8 2...
Page 132: ...5725A Instruction Manual 8 6 aq24f tif Figure 8 1 Final Assembly...
Page 133: ...List of Replaceable Parts 8 8 7 aq25f tif Figure 8 1 Final Assembly cont...
Page 134: ...5725A Instruction Manual 8 8 aq26f tif Figure 8 1 Final Assembly cont...
Page 135: ...List of Replaceable Parts 8 8 9 aq27f tif Figure 8 1 Final Assembly cont...
Page 136: ...5725A Instruction Manual 8 10 aq28f tif Figure 8 1 Final Assembly cont...
Page 137: ...List of Replaceable Parts 8 8 11 aq29f tif Figure 8 1 Final Assembly cont...
Page 138: ...5725A Instruction Manual 8 12 aq30f tif Figure 8 1 Final Assembly cont...
Page 139: ...List of Replaceable Parts 8 8 13 aq31f tif Figure 8 1 Final Assembly cont...
Page 141: ...List of Replaceable Parts 8 8 15 5725A 1611 aq36f eps Figure 8 2 A1 Interconnect PCA...
Page 145: ...List of Replaceable Parts 8 8 19 5725A 1650 aq37f eps Figure 8 3 A2 Current Amplifier PCA...
Page 149: ...List of Replaceable Parts 8 8 23 5725A 1661 aq38f eps Figure 8 4 A3 High Voltage Amplifier PCA...
Page 153: ...List of Replaceable Parts 8 8 27 5725A 1631 aq39f eps Figure 8 5 A4 Power Supply PCA...
Page 155: ...List of Replaceable Parts 8 8 29 5725A 1650 aq40f eps Figure 8 6 A5 Digital PCA...
Page 159: ...List of Replaceable Parts 8 8 33 5725A 1601 aq41f eps Figure 8 7 A6 High Voltage Sense PCA...
Page 161: ...List of Replaceable Parts 8 8 35 aq32f tif Figure 8 8 A12 Transformer Enclosure Assembly...
Page 162: ...5725A Instruction Manual 8 36 aq33f tif Figure 8 8 A12 Transformer Enclosure Assembly cont...
Page 163: ...List of Replaceable Parts 8 8 37 aq34f tif Figure 8 8 A12 Transformer Enclosure Assembly cont...
Page 164: ...5725A Instruction Manual 8 38 aq35f tif Figure 8 8 A12 Transformer Enclosure Assembly cont...
Page 166: ...5725A Instruction Manual 8 40...
Page 168: ...5725A Instruction Manual 9 2...
Page 169: ...Schematic Diagrams 9 3 9 Figure 9 1 A1 Interconnect PCA 5725A 1611 aq48f eps...
Page 170: ...5725A Instruction Manual 9 4 Figure 9 1 A1 Interconnect PCA cont...
Page 171: ...Schematic Diagrams 9 5 9 Figure 9 1 A1 Interconnect PCA cont...
Page 172: ...5725A Instruction Manual 9 6 Figure 9 2 A2 Current Amplifier PCA 5725A 1650 aq52f eps...
Page 173: ...Schematic Diagrams 9 7 9 Figure 9 2 A2 Current Amplifier PCA cont...
Page 174: ...5725A Instruction Manual 9 8 Figure 9 2 A2 Current Amplifier PCA cont...
Page 175: ...Schematic Diagrams 9 9 9 Figure 9 2 A2 Current Amplifier PCA cont...
Page 176: ...5725A Instruction Manual 9 10 Figure 9 3 A3 High Voltage Amplifier PCA 5725A 1661 aq56f eps...
Page 177: ...Schematic Diagrams 9 11 9 Figure 9 3 A3 High Voltage Amplifier PCA cont...
Page 178: ...5725A Instruction Manual 9 12 Figure 9 3 A3 High Voltage Amplifier PCA cont...
Page 179: ...Schematic Diagrams 9 13 9 Figure 9 4 A4 Power Supply PCA 5725A 1631 aq59f eps...
Page 180: ...5725A Instruction Manual 9 14 Figure 9 4 A4 Power Supply PCA cont...
Page 181: ...Schematic Diagrams 9 15 9 Figure 9 4 A4 Power Supply PCA cont...
Page 183: ...Schematic Diagrams 9 17 9 Figure 9 5 A5 Digital PCA cont...
Page 185: ...Schematic Diagrams 9 19 9 Figure 9 6 A6 High Voltage Sense PCA cont...
Page 186: ...5725A Instruction Manual 9 20 Figure 9 6 A6 High Voltage Sense PCA cont...
Page 187: ...Schematic Diagrams 9 21 9 Figure 9 6 A6 High Voltage Sense PCA cont...
Page 188: ...5725A Instruction Manual 9 22 Figure 9 6 A6 High Voltage Sense PCA cont...
Page 189: ...Schematic Diagrams 9 9 23 aq45f eps Figure 9 7 A12 Transformer Enclosure Assembly...
Page 190: ...5725A Instruction Manual 9 24...
Page 194: ...5725A Instruction Manual 4...