Keithley 2400, 2400-LV, 2400-C, 2401
Model 2400, 2400-LV, 2400-C, and 2401 SourceMeter® Specifications
SOURCE SPECIFICATIONS1
ADDITIONAL SOURCE SPECIFICATIONS
VOLTAGE PROGRAMMING ACCURACY (LOCAL OR REMOTE SENSE)
ACCURACY (1 Year)
RANGE
PROGRAMMING
RESOLUTION
(% rdg. + volts)
NOISE
(peak-peak)
0.1Hz – 10Hz
200.00 mV
2.00000 V
20.0000 V
200.00 V
5 µV
50 µV
500 µV
5 mV
0.02% + 600 µV
0.02% + 600 µV
0.02% + 2.4 mV
0.02% + 24 mV
5 µV
50 µV
500 µV
5 mV
MODEL
2400-C and
2400 Only:
23°C 5°C
TEMPERATURE COEFFICIENT (0°-18°C & 28°-50°C): (0.15 × accuracy
specification)/ °C.
MAX. OUTPUT POWER: 22W, four quadrant source or sink operation.
SOURCE/SINK LIMITS:
MODEL 2400, 2400-C: 21V @ 1.05A, 210V @ 105 mA.
MODEL 2400-LV, 2401: 21V @ 1.05A.
VOLTAGE REGULATION: Line: 0.01% of range. Load: 0.01% of range + 100µV.
NOISE 10Hz – 1MHz (p-p): 20mV typical into a resistive load.
OVERVOLTAGE PROTECTION: User selectable values, 5% tolerance. Factory
default = none.
CURRENT LIMIT: Bipolar current limit (compliance) set with single value. Min.
0.1% of range.
OVERSHOOT: <0.1% typical (full scale step, resistive load, 10mA range).
CURRENT PROGRAMMING ACCURACY (LOCAL OR REMOTE SENSE)
ACCURACY (1 Year)3
RANGE
PROGRAMMING
RESOLUTION
23°C 5°C
(% rdg. + amps)
NOISE
(peak-peak)
0.1Hz – 10Hz
1.00000 µA
10.0000 µA
100.000 µA
1.00000 mA
10.0000 mA
100.000 mA
1.00000 A2
50 pA
500 pA
5 nA
50 nA
500 nA
5 µA
50 µA
0.035% + 600 pA
0.033% + 2 nA
0.031% + 20 nA
0.034% + 200 nA
0.045% + 2 µA
0.066% + 20 µA
0.27% + 900 µA
5 pA
50 pA
500 pA
5 nA
50 nA
500 nA
25 µA
TRANSIENT RESPONSE TIME: 30µs minimum for the output to
recover to its spec. following a step change in load.
COMMAND PROCESSING TIME: Maximum time required for the
output to begin to change following the receipt of
:SOURce:VOLTage|CURRent <nrf> command. Autorange On:
10ms. Autorange Off: 7ms.
OUTPUT SETTLING TIME: Time required to reach 0.1% of final
value after command is processed and output slew. 100µs typical.
Resistive load. 10µA to 100mA range.
OUTPUT SLEW RATE (±30%): 0.5V/µs, 200V range, 100mA
compliance. (2400 and 2400-C only) 0.08V/µs, 20V range, 100mA
compliance.
DC FLOATING VOLTAGE: Output can be floated up to ±250VDC
from chassis ground.
REMOTE SENSE: Up to 1V drop per load lead.
COMPLIANCE ACCURACY: Add 0.3% of range and ±0.02% of
reading to base specification.
OVER TEMPERATURE PROTECTION: Internally sensed
temperature overload puts unit in standby mode.
RANGE CHANGE OVERSHOOT: Overshoot into a fully resistive
100k load, 10Hz to 1MHz BW, adjacent range changes between
200mV, 2V and 20V ranges, 100mV typical.
MINIMUM COMPLIANCE VALUE: 0.1% of range.
1. Specifications valid for continuous output currents below 105mA. For operation
above 105mA continuous for > 1 minute, derate accuracy 10%/35mA above
105mA.
2. Full operation (1A) regardless of load to 30°C. Above 30°C ambient, derate
35mA/°C and prorate 35mA/ load. 4-wire mode. For current sink operation on
1A range, maximum continuous power is limited to approximately 1/2 rated
power or less, depending on current, up to 30°C ambient. See power equations in
the User’s Manual to calculate allowable duty cycle for specific conditions.
3. For sink mode, 1µA to 100mA range, accuracy is: ±(0.15% + offset*4)
For 1A range, accuracy is: ±(1.5% + offset*8)
TEMPERATURE COEFFICIENT (0°-18°C & 28°-50°C): (0.15 × accuracy
specification)/ °C.
MAX. OUTPUT POWER: 22W, four quadrant source or sink operation.
SOURCE/SINK LIMITS:
MODEL 2400, 2400-C: 21V @ 1.05A, 210V @ 105 mA.
MODEL 2400-LV, 2401: 21V @ 1.05A.
CURRENT REGULATION: Line: 0.01% of range. Load: 0.01% of range + 100pA.
VOLTAGE LIMIT: Bipolar voltage limit (compliance) set with single value. Min.
0.1% of range.
OVERSHOOT: <0.1% typical (1mA step, RL = 10k, 20V range).
SPEC-2400 Rev. K / September 2011
1
Model 2400, 2400-LV, 2400-C, and 2401 SourceMeter® Specifications
MEASURE SPECIFICATIONS1,2
CONTACT CHECK SPECIFICATIONS
VOLTAGE MEASUREMENT ACCURACY (LOCAL OR REMOTE
SENSE)
SPEED: 350µs for verification and notification.
ACCURACY (1 Year)
MODEL
RANGE
23°C 5°C
(% rdg. + volts)
DEFAULT
INPUT
RESOLUTION RESISTANCE
200.00 mV
2.00000 V
20.0000 V
2400-C and 200.000 V
2400 Only:
1 µV
10 µV
100 µV
1 mV
CONTACT CHECK:
2
15
50
No contact check failure
<1.00
<13.5
<47.5
Always contact check failure
>3.00
>16.5
>52.5
0.012% + 300 µV
0.012% + 300 µV
0.015% + 1.5 mV
0.015% + 10 mV
>10 G
>10 G
>10 G
>10 G
TEMPERATURE COEFFICIENT (0°-18°C & 28°-50°C): (0.15 × accuracy
specification)/ °C.
CURRENT MEASUREMENT ACCURACY (LOCAL OR REMOTE
SENSE)
ACCURACY (1 Year)
RANGE
DEFAULT
RESOLUTION
VOLTAGE
BURDEN3
23°C 5°C
(% rdg. + amps)
1.00000 µA
10.0000 µA
100.000 µA
1.00000 mA
10.0000 mA
100.000 mA
1.00000 A
10 pA
100 pA
1 nA
10 nA
100 nA
1 µA
10 µA
<1 mV
<1 mV
<1 mV
<1 mV
<1 mV
<1 mV
<1 mV
0.029% + 300 pA
0.027% + 700 pA
0.025% + 6 nA
0.027% + 60 nA
0.035% + 600 nA
0.055% + 6 µA
0.22% + 570 µA
TEMPERATURE COEFFICIENT (0°-18°C & 28°-50°C): (0.10 × accuracy
specification)/ °C.
RESISTANCE MEASUREMENT ACCURACY (LOCAL OR REMOTE SENSE)
NORMAL
ACCURACY (23°C 5°C)
1 YEAR, (% rdg. + ohms)
ENHANCED
ACCURACY (23°C 5°C)5
1 YEAR, (% rdg. + ohms)
<2.00000 4
10 µ
DEFAULT TEST
CURRENT
-
Source IACC + Meas. VACC
Meas IACC + Meas. VACC
20.0000 
100 µ
100 mA
0.10% + 0.003 
0.07% + 0.001 
200.000 
1 m
10 mA
0.08% + 0.03 
0.05% + 0.01 
2.00000 k
10 m
1 mA
0.07% + 0.3 
0.05% + 0.1 
20.0000 k
100 m
100 µA
0.06% + 3 
0.04% + 1 
200.000 k
1
10 µA
0.07% + 30 
0.05% + 10 
2.00000 M
10 
1 µA
0.11% + 300 
0.05% + 100 
20.0000 M
100 
1 µA
0.11% + 1 k
0.05% + 500 
200.000 M
1 k
-
100 nA
0.66% + 10 k
Source IACC + Meas. VACC
0.35% + 5 k
Meas IACC + Meas. VACC
RANGE
>200.000 M
DEFAULT
RESOLUTION
-
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.
1. Speed = Normal (1 PLC). For 0.1 PLC, add 0.005% of range to offset specifications,
except 200mV, 1A ranges, add 0.05%. For 0.01 PLC, add 0.05% of range to offset
specifications, except 200mV and 1A ranges, add 0.5%.
2. Accuracies apply to 2- or 4-wire mode when properly zeroed.
3. 4-wire mode.
4. Manual ohms only.
5. Source readback ON, offset compensation ON, add system noise but don’t include offsets.
GUARD OUTPUT IMPEDANCE: <0.1 in ohms mode.
2
SPEC-2400 Rev. K / September 2011
Model 2400, 2400-LV, 2400-C, and 2401 SourceMeter® Specifications
SYSTEM SPEEDS
MEASUREMENT1
MAXIMUM RANGE CHANGE RATE: 75/second.
MAXIMUM MEASURE AUTORANGE TIME: 40ms (fixed source)2.
SWEEP OPERATION3 READING RATES (rdg./second) FOR 60Hz (50Hz):
SPEED
Fast
IEEE-488.1 Mode
Fast
IEEE-488.2 Mode
Medium
IEEE-488.2 Mode
Normal
IEEE-488.2 Mode
NPLC/TRIGGER
ORIGIN
0.01 / internal
0.01 / external
0.01 / internal
0.01 / external
0.10 / internal
0.10 / external
1.00 / internal
1.00 / external
MEASURE
TO MEM.
TO GPIB
2081 (2030)
1239 (1200)
2801 (2030)
1239 (1200)
510 (433)
438 (380)
59 (49)
57 (48)
1754
1254
1198 (1210)
1079 (1050)
509 (433)
438 (380)
59 (49)
57 (48)
SOURCE-MEASURE5
TO MEM
TO GPIB
1551 (1515)
1018 (990)
1551 (1515)
1018 (990)
470 (405)
409 (360)
58 (48)
57 (48)
1369
1035
1000 (900)
916 (835)
470 (410)
409 (365)
58 (48)
57 (47)
SOURCE-MEASURE
PASS/FAIL TEST4,5
TO MEM.
TO GPIB
902 (900)
830 (830)
902 (900)
830 (830)
389 (343)
374 (333)
56 (47)
56 (47)
981
886
809 (840)
756 (780)
388 (343)
374 (333)
56 (47)
56 (47)
SOURCE-MEMORY4,5
TO MEM.
TO GPIB
165 (162)
163 (160)
165 (162)
163 (160)
133 (126)
131 (125)
44 (38)
44 (38)
165
163
164 (162)
162 (160)
132 (126)
131 (125)
44 (38)
44 (38)
SINGLE READING OPERATION READINGRATES (rdg./second) FOR 60Hz (50Hz):
SPEED
Fast (488.1)
Fast (488.2)
Medium (488.2)
Normal (488.2)
NPLC/TRIGGER ORIGIN
MEASURE TO GPIB
SOURCE-MEASURE TO GPIB5
SOURCE-MEASURE PASS/FAIL TEST4,5
TO GPIB
0.01 / internal
0.01 / internal
0.10 / internal
1.00 / internal
537
256 (256)
167 (166)
49 (42)
140
79 (83)
72 (70)
34 (31)
135
79 (83)
69 (70)
35 (30)
SOURCE PASS/FAIL TEST
SOURCE-MEASURE PASS/FAIL TEST5,7
TO GPIB
COMPONENT INTERFACE HANDLER TIME FOR 60Hz (50Hz):4,6,8
SPEED
Fast
Medium
Normal
NPLC/TRIGGER ORIGIN
MEASURE TO GPIB
0.01/ external
0.10 / external
1.00 / external
1.04 ms (1.08 ms)
2.55 ms (2.9 ms)
17.53 ms (20.9 ms)
1. Reading rates applicable for voltage or current measurements. Auto zero off, autorange
off, filter off, display off, trigger delay = 0, binary reading format, and source auto-clear
off.
2. Purely resistive load. 1µA and 10µA ranges <65ms.
3. 1000 point sweep was characterized with the source on a fixed range.
4. Pass/Fail test performed using one high limit and one low math limit.
5.
6.
7.
8.
0.5 ms (0.5 ms)
4.82 ms (5.3 ms)
0.5 ms (0.5 ms)
6.27 ms (7.1 ms)
0.5 ms (0.5 ms)
21.31 ms (25.0 ms)
Includes time to re-program source to a new level before making measurement.
Time from falling edge of START OF TEST signal to falling edge of END OF TEST
signal.
Command processing time of :SOURce:VOLTage|CURRent:TRIGgered <nrf> command
not included.
Models 2400, 2400-LV, and 2400-C.
GENERAL
NOISE REJECTION:
Fast
Medium
Slow
NPLC
NMRR
CMRR
0.01
0.1
1
60 dB
80 dB
80 dB
100 dB1
1. Except lowest 2 current ranges – 90dB.
LOAD IMPEDANCE: Stable into 20,000pF typical.
COMMON MODE VOLTAGE: 250V DC.
COMMON MODE ISOLATION: >109, <1000pF.
OVERRANGE: 105% of range, source and measure.
MAX. VOLTAGE DROP BETWEEN INPUT/OUTPUT AND SENSE
TERMINALS: 5V.
MAX. SENSE LEAD RESISTANCE: 1M for rated accuracy.
SENSE INPUT IMPEDANCE: >1010.
GUARD OFFSET VOLTAGE: <300µV, typical.
SOURCE OUTPUT MODES:
Fixed DC level
Memory List (mixed function)
Stair (linear and log)
SOURCE MEMORY LIST: 100 points max.
MEMORY BUFFER: 5,000 readings @ 5.5 digits (two 2,500 point buffers).
Includes selected measured value(s) and time stamp. Lithium battery backup (3
yr+ battery life).
PROGRAMMABILITY: IEEE-488 (SCPI-1996.0), RS-232, 5 userdefinable power-up states plus factory default and *RST.
DIGITAL INTERFACE:
Output Enable: Active low input.
Handler Interface: Start of test, end of test, 3 category bits. [email protected]
300mA supply. Model 2400, 2400-LV, 2400-C only.
Digital I/O: 1 trigger input, 4 TTL/Relay Drive outputs (33V @ 500mA,
diode clamped). Model 2400, 2400-LV, 2400-C only. Model 2401 uses the
trigger input (SOT) line but not the four digital output lines.
POWER SUPPLY: 100V to 240V rms, 50–60Hz (automatically detected at
power up). 190VA.
WARRANTY: 1 year.
EMC: Conforms to European Union EMC Directive.
SAFETY: UL listed to UL 61010B-1:2003. Conforms to European Union
Low Voltage Directive.
WARM-UP: 1 hour to rated accuracies.
DIMENSIONS: 89mm high × 213mm wide × 370mm deep (3 1/2 in × 8 3/8
in × 14 9/16 in). Bench Configuration (with handle & feet):104mm high ×
238mm wide × 370mm deep (4 1/8 in × 9 3/8 in × 14 9/16 in).
WEIGHT: 3.21kg (7.08 lbs).
ENVIRONMENT:
For Indoor Use Only: Maximum 2000m above Sea Level
Operating: 0°–50°C, 70%R.H. up to 35°C. Derate 3% R.H./°C, 35°–50°C.
Storage: –25°C to 65°C.
ACCESSORIES SUPPLIED: Test Leads, User’s Manual, Quick Start
Guide, Service Manual (downloadable), LabVIEW Drivers (downloadable
for Models 2400 and 2400-C only).
Specifications subject to change without notice.
SPEC-2400 Rev. K / September 2011
3
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