Keithley SourceMeter 3A 2420 Service Manual page 109

SourceMeter
MEASURE SPECIFICATIONS
VOLTAGE MEASUREMENT ACCURACY (Local or Remote Sense)
MODEL RANGE
ALL: 200.000 mV
2.00000 V
2400: 20.0000 V
200.000 V
2410: 20.0000 V
1000.00 V
2420, 2425, 2430: 20.0000 V
2420: 60.0000 V
2430: 100.000 V
2440: 10.0000 V
40.0000 V
TEMPERATURE COEFFICIENT (0°–18°C & 28°–50°C): ±(0.15 × accuracy specification)/°C.
CURRENT MEASUREMENT ACCURACY (Local or Remote Sense)
MODEL
2400, 2410: 1.00000 µA
All: 10.0000 µA
100.000 µA
1.00000 mA
2400, 2420, 2425, 2430, 2440: 10.0000 mA
2410: 20.0000 mA
All: 100.000 mA
2400, 2410: 1.00000
2420, 2425, 2430, 2440: 1.00000
2420, 2425: 3.00000
2430: 3.00000
10.0000
2440: 5.00000
TEMPERATURE COEFFICIENT (0°–18°C & 28°–50°C): ±(0.10 × accuracy specification)/°C.
RESISTANCE MEASUREMENT ACCURACY (Local or Remote Sense)
DEFAULT
TEST
DEFAULT CURRENT 2420, 2425,
RANGE RESOLUTION 2400, 2410
Ω
<0.20000 4 –
Ω
2.00000 4 10 µΩ
Ω
20.0000 100 µΩ 100 mA
Ω
200.000 1 mΩ 10 mA
2.00000 kΩ 10 mΩ
20.0000 kΩ 100 mΩ 100 µA
Ω
200.000 kΩ 1 10 µA
Ω
2.00000 MΩ 8 10
Ω
9
20.0000 MΩ 100
200.000 MΩ 4 1 kΩ 100 nA
>200.000 MΩ 4 –
TEMPERATURE COEFFICIENT (0°–18°C & 28°–50°C): ±(0.15 × accuracy
specification)/°C.
SOURCE I MODE, MANUAL OHMS: Total uncertainty = I source accuracy
+ V measure accuracy (4-wire remote sense).
SOURCE V MODE, MANUAL OHMS: Total uncertainty = V source accuracy
+ I measure accuracy (4-wire remote sense).
6-WIRE OHMS MODE: Available using active ohms guard and guard
sense. Max. Guard Output Current: 50mA (except 1A range). Accuracy
is load dependent. Refer to White Paper no. 2033 for calculation
formula.
GUARD OUTPUT IMPEDANCE: <0.1Ω in ohms mode.
Line Specifications
®
1, 2, 7
DEFAULT INPUT
RESOLUTION RESISTANCE
1 µV >10 GΩ
10 µV >10 GΩ
100 µV >10 GΩ
1 mV >10 GΩ
100 µV >10 GΩ
10 mV >10 GΩ
100 µV >10 GΩ
1 mV >10 GΩ
1 mV >10 GΩ
100 µV >10 GΩ
1 mV >10 GΩ
DEFAULT
RANGE RESOLUTION
10 pA
100 pA
1 nA
10 nA
100 nA
100 nA
1 µA
A 10 µA
A 10 µA
A 10 µA
A 10 µA
A 6
A 10 µA
DEFAULT
TEST CURRENT
2430, 2440 2400
– – Source I + Meas.V
ACC
– 1 A Source I + MeasV
ACC
0.10% + 0.003 Ω
100 mA
0.08% + 0.03 Ω
10 mA
1 mA 1 mA 0.07% +
100 µA 0.06% +
10 µA 0.07% +
0.11% + 300 Ω
1 µA 1 µA
1 µA 1 µA 0.11% +
– 0.66% +
– – Source I + Meas.V
ACC
ACCURACY (1 Year)
23°C ±5°C
±(% rdg. + volts)
0.012% + 300 µV
0.012% + 300 µV
0.015% + 1.5 mV
0.015% + 10 mV
0.015% + 1 mV
0.015% + 50 mV
0.015% + 1 mV
0.015% + 3 mV
0.015% + 5 mV
0.015% + 750 µV
0.015% + 3 mV
ACCURACY (1 Year)
VOLTAGE 23°C ±5°C
BURDEN 3 ±(% rdg. + amps)
< 1mV 0.029% + 300 pA
< 1mV 0.027% + 700 pA
< 1mV 0.025% + 6 nA
< 1mV 0.027% + 60 nA
< 1mV 0.035% + 600 nA
< 1mV 0.035% + 1.2 µA
< 1mV 0.055% + 6 µA
< 1mV 0.22% + 570 µA
< 1mV 0.060% + 570 µA
< 1mV 0.052% + 1.71 mA
< 1mV 0.052% + 1.71 mA
< 1mV 0.10% + 3.42 mA
NORMAL
ACCURACY (23°C ±5°C)
1 YEAR, ±(% rdg. + ohms)
2410
Source I + Meas.V
ACC ACC ACC
Source I + Meas.V
ACC ACC ACC
0.11% + 0.006 Ω
0.1 Ω
0.09% +
0.3 Ω 0.6 Ω
0.08% +
3 Ω 6 Ω
0.07% +
30 Ω 60 Ω
0.07% +
600 Ω
0.12% +
1 kΩ 0.12% + 2.4 kΩ
10 kΩ 0.66% + 24 kΩ
Source I + Meas.V
ACC ACC ACC
1 Speed = Normal (1 PLC). For 0.1 PLC, add 0.005% of range to offset specifications, except 200mV, 1A, 10A
ranges, add 0.05%. For 0.01 PLC, add 0.05% of range to offset specifications, except 200mV, 1A, 10A
ranges, add 0.5%.
2 Accuracies apply to 2- or 4-wire mode when properly zeroed.
3 4-wire mode.
4
Manual ohms only – except 2420, 2425, 2430, 2440 for 2Ω range and 2410 or 2400 for 200MΩ range.
5 Source readback enabled, offset compensation ON. Also available on 2410, 2420, 2425, 2430, and 2440
with similar accuracy enhancement.
6
10A range only in pulse mode.
7 In pulse mode, limited to 0.1 PLC measurement.
8 Except 2440; default test current is 5µA.
9 Except 2440; default test current is 0.5µA.
2400, 2400-C, 2410, 2410-C,
2420, 2420-C, 2425, 2425-C,
2430, 2430-C, 2440, 2440-C
CONTACT CHECK
SPECIFICATIONS
SPEED: 350µs for verification and notification.
CONTACT CHECK: 2Ω
No contact
check failure <1.00Ω <13.5Ω <47.5Ω
Always contact
check failure >3.00Ω >16.5Ω >52.5Ω
ENHANCED
ACCURACY (23°C ±5°C)
1 YEAR, ±(% rdg. + ohms)
2420, 2425, 2430, 2440
Source I + Meas.V Source I
ACC ACC
Ω
0.17% +0.0003 Source I
0.10% + 0.003 Ω 0.07% + 0.001 Ω
0.03 Ω 0.05% + 0.01 Ω
0.08% +
0.3 Ω
0.07% + 0.05% +
3 Ω
0.06% + 0.04% +
30 Ω
0.07% + 0.05% +
300 Ω 0.05% + 100 Ω
0.11% +
0.05% + 500 Ω
0.11% + 1 kΩ
Source I + Meas.V 0.35% +
ACC ACC
Source I + Meas.V Source I
ACC ACC
15Ω 50Ω
5
2400
+ Meas.V
ACC ACC
+ Meas.V
ACC ACC
0.1 Ω
1 Ω
10 Ω
5 kΩ
+ Meas.V
ACC ACC
Rev. A
5/17/01