NOTES

1. 2400, 2401, 2410 Only: Specifications valid for continuous output currents below 105 mA. For operation above 105 mA continuous for >1 minute, derate accuracy 10%/35 mA above 105 mA.
2. Speed = Normal (1 PLC). For 0.1 PLC, add 0.005% of range to offset specifications, except 200 mV, 1 A, 10 A ranges, add 0.05%. For 0.01 PLC, add 0.05% of range to offset specifications, except 200 mV, 1 A, 10 A ranges, add 0.5%.
3. Accuracies apply to 2- or 4-wire mode when properly zeroed.
4. In pulse mode, limited to 0.1 PLC measurement.
   

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   Temperature Coefficient (0°–18°C and 28°–50°C) — ±(0.15 × accuracy specification)/°C.

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   Voltage Regulation — Line: 0.01% of range. Load: 0.01% of range + 100 µV.

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   Over Voltage Protection — User selectable values, 5% tolerance. Factory default = none.

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   Current Limit — Bipolar current limit (compliance) set with single value. Min. 0.1% of range.

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   Overshoot — <0.1% typical (full scale step, resistive load, 10 mA range).

Additional Source Specifications (All Models)

Transient Response Time — 30 µs 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 command. Autorange On: 10 ms. Autorange Off: 7 ms.

Output Settling Time — Time required to reach 0.1% of final value after command is processed. 100 µs typical. Resistive load. 10 µA to 100 mA range.

DC Floating Voltage — Output can be floated up to ±250 VDC (2440 ±40 VDC) from chassis ground.

Remote Sense — Up to 1 V 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 100 kΩ load, 10 Hz to 1 MHz BW, adjacent ranges: 100 mV typical, except 20 V/200 V (20 V/60 V on 2420), range boundary, and 2440.

Minimum Compliance Value — 0.1% of range.

Current Accuracy (Local or Remote Sense)

NOTES

1. 2400, 2401, 2410 Only: Specifications valid for continuous output currents below 105 mA. For operation above 105 mA continuous for >1 minute, derate accuracy 10%/35 mA above 105 mA.
2. Full operation (1 A) regardless of load to 30°C (50°C for 2420 and 2440). Above 30°C (50°C for 2420 and 2440) ambient, derate 35 mA/°C and prorate 35 mA/Ω load. 4-wire mode. For current sink operation on 1 A, 3 A, or 5 A ranges, 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, 1 µA to 100 mA range, accuracy is: 2400, 2401: ±(0.15% + offset*4). 2410, 2420, 2440: ±(0.5% + offset*3).For 1A range, accuracy is: 2400, 2401: ±(1.5% + offset*8). 2410, 2420, 2440: ±(1.5% + offset*3).
4. 10 A range only in pulse mode. Limited to 2.5 ms pulse width maximum. 10% duty cycle maximum.
5. Speed = Normal (1 PLC). For 0.1 PLC, add 0.005% of range to offset specifications, except 200 mV, 1 A, 10 A ranges, add 0.05%. For 0.01 PLC, add 0.05% of range to offset specifications, except 200 mV, 1 A, 10 A ranges, add 0.5%.
6. Accuracies apply to 2- or 4-wire mode when properly zeroed.
7. In pulse mode, limited to 0.1 PLC measurement.
8. 2400 only.
   

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   Temperature Coefficient (0°–18°C and 28°–50°C) — ±(0.15 × accuracy specification)/°C.

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   Current Regulation — Line: 0.01% of range. Load: 0.01% of range (except 2440 5 A range 0.05%) + 100 pA.

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   Voltage Limit — Bipolar voltage limit (compliance) set with single value. Min. 0.1% of range.

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   Overshoot — <0.1% typical (1 mA step, RL = 10 kΩ, 20 V range for 2400, 2401, 2410, 2420), (10 V range for 2440).

Resistance Measurement Accuracy (Local or Remote Sense) ^{1, 2, 5}

Temperature Coefficient (0°–18°C and 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: 50 mA (except 1 A range). Accuracy is load dependent. Refer to White Paper below for calculation ­formula: “Obtaining More Accurate Resistance Measurements Using the 6-wire Ohms Measurement Technique.”

Guard Output Impedance — <0.1Ω in ohms mode.

NOTES

1. Speed = Normal (1 PLC). For 0.1 PLC, add 0.005% of range to offset specifications, except 200 mV, 1 A, 10 A ranges, add 0.05%. For 0.01 PLC, add 0.05% of range to offset specifications, except 200 mV, 1 A, 10 A ranges, add 0.5%.
2. Accuracies apply to 2- or 4-wire mode when properly zeroed.
3. Manual ohms only – except 2420, 2440 for 2 Ω range and 2400, 2401, or 2410 for 200 MΩ range.
4. Source readback enabled, offset compensation ON. Also available on 2410, 2420, and 2440 with similar ­accuracy enhancement.
5. In pulse mode, limited to 0.1 PLC measurement.
6. Except 2440; default test current is 5 µA.
7. Except 2440; default test current is 0.5 µA.

System Speeds

Measurement ¹

Maximum Range Change Rate — 75/second.

Maximum Measure Autorange Time40 ms (fixed source).²

Sweep Operation³ Reading Rates (rdg./second) for 60 Hz (50 Hz)

Single Reading Operation Reading Rates (rdg./second) for 60 Hz (50 Hz)

Component for 60 Hz (50 Hz) ^{4, 6}

NOTES

1. Reading rates applicable for voltage or current measurements. Auto zero off, autorange off, filter off, display off, trigger delay = 0, and binary reading format.
2. Purely resistive lead. 1 µA and 10 µA ranges <65 ms.
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. Includes time to re-program source to a new level before making ­measurement.
6. Time from falling edge of START OF TEST signal to falling edge of end of test signal.
7. Command processing time of :SOURce:VOLTage|CURRent:TRIGgered command not included.

General Specifications

Noise Rejection —

Load Impedance — Stable into 20,000 pF typical.

Common Mode Voltage — 250 V DC (40V DC for 2440).

Common Mode Isolation — >10⁹Ω, <1000pF.

Overrange — 105% of range, source and measure.

Max. Voltage Drop Between Input/Output and Sense Terminals — 5 V.

Max. Sense Lead Resistance — 1 MΩ for rated accuracy.

Sense Input Impedance — >10¹⁰Ω.

Guard Offset Voltage — <150 µV, typical (300 µV for 2440).

Source Output Modes — Fixed DC levelMemory List (mixed function)Stair (linear and log)

Memory Buffer — 5,000 readings @ 5 digits (two 2,500 point buffers). Includes selected measured value(s) and time stamp. Lithium battery ­backup (3 yr+ battery life).

Source Memory List — 100 points max.

Programmability — IEEE-488 (SCPI-1995.0), RS-232, 5 user-definable 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. +5 V @ 300 mA supply. Not available on 2401.

Digital I/O — 1 trigger input, 4 TTL/Relay Drive outputs (33 V @ 500 mA, diode clamped). Not available on 2401.

Power Supply — 100 V to 240 V rms, 50–60 Hz (automatically detected at power up). 2400, 2401: 190 VA. 2410: 210 VA. 2420: 220 VA. ²⁴40: 240VA.

Cooling — 2401: Convection. 2410, 2420, 2440: Forced air, variable speed.

EMC — Conforms to European Union Directive 89/336/EEC, EN 61326-1.

Safety — Conforms to European Union Low Voltage Directive. 2400 and 2401 UL listed to UL 61010-1:2012 and UL 61010-2-30:2012.

Vibration — MIL-PRF-28800F Class 3 Random.

Warm-Up — 1 hour to rated accuracies.

Dimensions — 89 mm high × 213 mm wide × 370 mm deep (3½ in × 8³⁄⁸ in × 14⁹⁄¹⁶ in). Bench Configuration (with handle and feet): 104 mm high × 238 mm wide × 370 mm deep (4¹⁄⁸ in × 9³⁄⁸ in × 14⁹⁄¹⁶ in).

Weight — 3.21 kg (7.08 lbs.) (2440: 4.1kg, 9.0 lbs).

Environment — 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.