Datasheet

SMU INSTRUMENTS
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(U.S. only)
A Greater Measure of Confidence
2651A
50A, High Power System
SourceMeter
®
SMU Instrument
MEASUREMENT SPEED SPECIFICATIONS
1, 2
MAXIMUM SWEEP OPERATION RATES (operations per second) FOR 60Hz (50Hz):
A/D Converter
Speed Trigger Origin
Measure
To Memory Using
User Scripts
Measure
To GPIB Using
User Scripts
Source Measure
To Memory Using
User Scripts
Source Measure
To GPIB Using
User Scripts
Source Measure
To Memory Using
Sweep API
Source Measure
To GPIB Using
Sweep API
0.001 NPLC Internal 20000 (20000) 9800 (9800) 7000 (7000) 6200 (6200) 12000 (12000) 5900 (5900)
0.001 NPLC Digital I/O 8100 (8100) 7100 (7100) 5500 (5500) 5100 (5100) 11200 (11200) 5700 (5700)
0.01 NPLC Internal 4900 (4000) 3900 (3400) 3400 (3000) 3200 (2900) 4200 (3700) 4000 (3500)
0.01 NPLC Digital I/O 3500 (3100) 3400 (3000) 3000 (2700) 2900 (2600) 4150 (3650) 3800 (3400)
0.1 NPLC Internal 580 (480) 560 (470) 550 (465) 550 (460) 560 (470) 545 (460)
0.1 NPLC Digital I/O 550 (460) 550 (460) 540 (450) 540 (450) 560 (470) 545 (460)
1.0 NPLC Internal 59 (49) 59 (49) 59 (49) 59 (49) 59 (49) 59 (49)
1.0 NPLC Digital I/O 58 (48) 58 (49) 59 (49) 59 (49) 59 (49) 59 (49)
HS ADC Internal 38500 (38500) 18000 (18000) 10000 (10000) 9500 (9500) 14300 (14300) 6300 (6300)
HS ADC Digital I/O 12500 (12500) 11500 (11500) 7500 (7500) 7000 (7000) 13200 (13200) 6000 (6000)
HIGH SPEED ADC BURST MEASUREMENT RATES
3
Burst Length
(readings)
Readings per
Second Bursts per Second
100 1,000,000 400
500 1,000,000 80
1000 1,000,000 40
2500 1,000,000 16
5000 1,000,000 8
MAXIMUM SINGLE MEASUREMENT RATES (operations per
second) FOR 60Hz (50Hz)
A/D Converter
Speed
Trigger
Origin
Measure
To GPIB
Source
Measure
To GPIB
Source
Measure
Pass/
Fail
To G
PIB
0.001 NPLC Internal 1900 (1800) 1400 (1400) 1400 (1400)
0.01 NPLC Internal 1450 (1400) 1200 (1100) 1100 (1100)
0.1 NPLC Internal 450 (390) 425 (370) 425 (375)
1.0 NPLC Internal 58 (48) 57 (48) 57 (48)
MAXIMUM MEASUREMENT RANGE CHANGE RATE: >4000 per second for >10µA (typical).
MAXIMUM SOURCE RANGE CHANGE RATE: >325 per second for >10µA, typical. When chang-
ing to or from a range ≥1A, maximum rate is >250 per second, typical.
COMMAND PROCESSING TIME: Maximum time required for the output to begin to change fol-
lowing the receipt of the smua.source.levelv or smua.source.leveli command. <1ms typical.
NOTES
1. Tests performed with a Model 2651A on channel A using the following equipment: Computer hardware (Intel
®
Pentium
®
4 2.4GHz, 2GB RAM, National Instruments™ PCI-GPIB). Driver (NI-488.2 Version 2.2 PCI-GPIB).
Software (Microsoft
®
Windows
®
XP, Microsoft Visual Studio
®
2010, VISA™ version 4.1).
2. Exclude current measurement ranges less than 1mA.
3. smua.measure.adc has to be enabled and the smua.measure.count set to the burst length.
TRIGGERING AND SYNCHRONIZATION
SPECIFICATIONS
TRIGGERING:
Trigger In to Trigger Out: 0.5µs (typical).
Trigger In to Source Change
1
: 10µs (typical).
Trigger Timer Accuracy: ±2µs (typical).
Source Change
1
After LXI Trigger: 280µs (typical).
SYNCHRONIZATION:
Single-Node Synchronized Source Change
1
: <0.5µs (typical).
Multi-Node Synchronized Source Change
1
: <0.5µs (typical).
NOTES
1. Fixed source range with no polarity change.
Model 2651A specifications Model 2651A specifications