This document contains specifications and supplemental information for the Model 2651A High Power System SourceMeter™ instrument. Specifications are the standards against which the 2651A is tested. Upon leaving the factory, the 2651A meets these specifications. Supplemental and typical values are nonwarranted, apply at 23 °C, and are provided solely as useful information.
Accuracy specifications are applicable for both normal and high-capacitance modes.
Source and measurement accuracies are specified at the 2651A terminals under these conditions:
- 18 °C to 23 °C, < 70="" percent="" relative="">
- After two-hour warm-up
- Speed normal (1 NPLC)
- A/D autozero enabled
- Remote sense operation or properly zeroed local operation
- Calibration period: One year
DC POWER SPECIFICATIONS
Refer to Pulse characteristics for pulsing details, such as duty cycle and pulse width.
VOLTAGE ACCURACY SPECIFICATIONS3, 4
CURRENT ACCURACY SPECIFICATIONS7
The following specifications are supplemental characteristics that provide additional information about instrument functions and performance. These characteristics are nonwarranted specifications; they describe the typical performance of the 2651A.
CAUTION Carefully consider and configure the appropriate output-off state and source and compliance levels before connecting the 2651A to a device that can deliver energy. Failure to consider the output-off state and source and compliance levels may result in damage to the instrument or to the device under test.
ADDITIONAL SOURCE CHARACTERISTICS
ADDITIONAL METER CHARACTERISTICS
HIGH-CAPACITANCE MODE CHARACTERISTICS 19, 20
MEASUREMENT SPEED CHARACTERISTICS23, 24
Maximum sweep operation rates (operations per second) for 60 Hz (50 Hz):
High-speed ADC burst measurement rates:25
Maximum single measurement rates (operations per second) for 60 Hz (50 Hz):
TRIGGERING AND SYNCHRONIZATION CHARACTERISTICS
1 Full power source operation regardless of load to 30 °C ambient. Above 30 °C or power sink operation, refer to “Operating boundaries” in the Model 2651A Reference Manual for additional power derating information.
2 Quadrants 2 and 4 in the power envelope are trimmed at 36 V and 4.5 A.
3 Add 50 µV to source accuracy specifications per volt of HI lead drop.
4 For temperatures 0 °C to 18 °C and 28 °C to 50 °C, accuracy is degraded by ± (0.15 × accuracy specification)/°C. High-capacitance mode accuracy is applicable at 23 °C ± 5 °C only.
5 Derate accuracy specification for NPLC setting < 1="" by="" increasing="" error="" term.="" add="" appropriate="" typical="" percent="" of="" range="" term="" for="" resistive="" loads="" using="" the="" table="">
6 18-bit ADC. Average of 1000 samples taken at 100 µs intervals.
7 At temperatures 0 °C to 18 °C and 28 °C to 50 °C; 100 nA to 10 µA accuracy is degraded by ± (0.35 × accuracy specification)/°C. 100 µA to 50 A accuracy is degraded by ± (0.15 × accuracy specification)/°C. High-capacitance mode accuracy is applicable at 23 °C ± 5 °C only
8 8 50 A range accessible only in pulse mode.
9 50 A range accuracy measurements are taken at 0.008 NPLC.
10 Average of 100 samples taken at 1 µs intervals.
11 Times measured from the start of pulse to the start off-time; see figure below.
12 Thermally limited in sink mode (quadrants 2 and 4) and ambient temperatures above 30 °C. See power equations in the Model 2651A Reference Manual for more information.
13 Times measured from the start of pulse to the start off-time; see figure below.
14 With measure and compliance set to the maximum current for the specified voltage range.
15 Add 50 µV to source accuracy specifications per volt of HI lead drop.
16 For sink mode operation (quadrants II and IV), add 0.6 percent of limit range to the corresponding voltage source accuracy specifications. For 100 mV range add an additional 60 mV of uncertainty. Specifications apply with sink mode enabled.
17 For sink mode operation (quadrants II and IV), add 0.6 percent of limit range to the corresponding current limit accuracy specifications. Specifications apply with sink mode enabled.
18 Includes measurement of SENSE HI to HI and SENSE LO to LO contact resistances.
19 High-capacitance mode specifications are for DC measurements only and use locked ranges. Autorange is disabled.
20 100 nA range is not available in high-capacitance mode.
21 Add an additional 2 nA to the source current accuracy and measure current accuracy offset for the 1 µA range.
22 With measure and compliance set to the maximum current for the specified voltage range.
23 Tests performed with a 2651A on channel A using the following equipment: Computer hardware (Intel® Pentium® 4 2.4 GHz, 2 GB RAM, National Instruments™ PCI-GPIB); driver (NI-488.2 Version 2.2 PCI-GPIB); software (Microsoft® Windows® XP, Microsoft® Visual Studio® 2010, NI-VISA™ version 4.1).
24 Exclude current measurement ranges less than 1 mA.
25 smua.measure.adc must be enabled and the smua.measure.count set to the burst length.
26 Fixed source range with no polarity change.