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Models 2634B, 2635B, and 2636B System SourceMeter Instrument Specifications


SPECIFICATION CONDITIONS

This document contains specifications and supplemental information for the Models 2634B, 2635B, and 2636B System SourceMeter instrument. Specifications are the standards against which the 2634B, 2635B, and 2636B are tested. Upon leaving the factory, the 2634B, 2635B, and 2636B meet these specifications. Supplemental and typical values are nonwarranted, apply at 23 °C, and are provided solely as useful information.

Source and measurement accuracies are specified at the 2634B, 2635B, and 2636B terminals under these conditions:

  • 18 °C to 28 °C, < 70 percent relative humidity
  • After a two-hour warm-up period
  • Speed normal (1 NPLC)
  • A/D autozero enabled
  • Remote sense operation or properly zeroed local operation
  • Calibration period: One year

DC POWER SPECIFICATIONS

  Voltage Current
Maximum output power and source/sink limits1

30.3 W maximum per channel

  • ± (20.2 V at 1.5 A, −1.5 A)
  • ± (202 V at 100 mA, −100 mA)
  • Four-quadrant source or sink operation

30.3 W maximum per channel

  • ± (1.515 A at 20 V, −20 V)
  • ± (101 mA at 200 V, −200 V)
  • Four-quadrant source or sink operation
 
DC Power pulse graph

Refer to Pulse Characteristics for pulsing details, such as duty cycle and pulse width.


1 Full power source operation regardless of load or number of channels used to 30 °C ambient temperature. Above 30 °C or power sink operation, refer to “Operating Boundaries” in the Series 2600B System SourceMeter Reference Manual for additional power derating information.


VOLTAGE ACCURACY SPECIFICATIONS2, 3

 
Range
Source Measure
Programming resolution Accuracy
± (% reading + volts)
Typical noise (peak to peak)
0.1 Hz to 10 Hz
Display resolution Accuracy4
± (% reading + volts)
200 mV 5 µV 0.02% + 375 µV 20 µV 100 nV 0.015% + 225 µV
2 V 50 µV 0.02% + 600 µV 50 µV 1 µV 0.02% + 350 µV
20 V 500 µV 0.02% + 5 mV 300 µV 10 µV 0.015% + 5 mV
200 V 5 mV 0.02% + 50 mV 2 mV 100 µV 0.015% + 50 mV

CURRENT ACCURACY SPECIFICATIONS2

 
 Range
Source Measure
Programming
resolution
Accuracy
± (% reading + amperes)
Typical noise (peak to peak)
0.1 Hz to 10 Hz
Display resolution

Accuracy4
± (% reading + amperes)

100 pA5 N/A N/A N/A 100 aA 0.15% + 120 fA6, 7
1 nA 20 fA 0.15% + 2 pA 800 fA 1 fA 0.15% + 240 fA6, 8
10 nA 200 fA 0.15% + 5 pA 2 pA 10 fA 0.15% + 3 pA
100 nA 2 pA 0.06% + 50 pA 5 pA 100 fA 0.06% + 40 pA
1 µA 20 pA 0.03% + 700 pA 25 pA 1 pA 0.025% + 400 pA
10 µA 200 pA 0.03% + 5 nA 60 pA 10 pA 0.025% + 1.5 nA
100 µA 2 nA 0.03% + 60 nA 3 nA 100 pA 0.02% + 25 nA
1 mA 20 nA 0.03% + 300 nA 6 nA 1 nA 0.02% + 200 nA
10 mA 200 nA 0.03% + 6 µA 200 nA 10 nA 0.02% + 2.5 µA
100 mA 2 µA 0.03% + 30 µA 600 nA 100 nA 0.02% + 20 µA
1 A 20 µA 0.05% + 1.8 mA 70 µA 1 µA 0.03% + 1.5 mA
1.5 A 50 µA 0.06% + 4 mA 150 µA 1 µA 0.05% + 3.5 mA
10 A9 200 µA 0.5% + 40 mA N/A 10 µA 0.4% + 25 mA
 

2 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.
3 Add 50 µV to source accuracy specifications per volt of HI lead drop.
4 Derate accuracy specification for NPLC setting < 1 by increasing the error term. Add appropriate typical percent of reading term for resistive loads using the table below.

NPLC setting 200 mV range 2 V and 200 V ranges 100 nA range 1 µA to 100 mA ranges 1 A to 1.5 A ranges
0.1 0.01% 0.01% 0.01% 0.01% 0.01%
0.01 0.08% 0.07% 0.1% 0.05% 0.05%
0.001 0.8% 0.6% 1% 0.5% 1.1%
5 The 100 pA range is not available with the Model 2634B.
6 10-NLPC, 11-Point Median Filter, < 200 V range, measurements made within 1 hour after zeroing. 23 ºC ± 1 ºC.
7 Under default specification conditions: ± (0.15% + 750 fA).
8 Under default specification conditions: ± (0.15% + 1 pA).
9 10 A range is accessible in pulse mode only. Accuracy specifications for 10 A range are typical.

SUPPLEMENTAL CHARACTERISTICS

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 2634B, 2635B, and 2636B.

PULSE CHARACTERISTICS

pulse characteristics
Pulse region specifications
Region quadrant diagram Region maximums Maximum pulse width10 Maximum duty cycle11
1 100 mA at 200 V DC, no limit 100%
1 1.5 A at 20 V DC, no limit 100%
2 1 A at 180 V 8.5 ms 1%
312 1 A at 200 V 2.2 ms 1%
4 10 A at 5 V 1 ms 2.2%

10 Times measured from the start of pulse to the start off-time; see figure below

table
11 Thermally limited in sink mode (quadrants 2 and 4) and ambient temperatures above 30 °C. See power equations in the Series 2600B System SourceMeter Reference Manual for more information.
12 Voltage source operation with 1.5 A current limit.
Minimum programmable pulse width9

100 µs

  • Note: Minimum pulse width for settled source at a given I-V output and load can be longer than 100 µs.
Source value Load Source settling time (% of range) Minimum pulse width
5 V 0.5 Ω 1% 300 µs
20 V 200 Ω 0.2% 200 µs
180 V 180 Ω 0.2% 5 ms
200 V (1.5 A Limit) 200 Ω 0.2% 1.5 ms
100 mA 200 Ω 1% 200 µs
1 A 200 Ω 1% 500 µs
1 A 180 Ω 0.2% 5 ms
10 A 0.5 Ω 0.5% 300 µs
Pulse width programming resolution 1 µs  
Pulse width programming accuracy ± 5 µs
Pulse width jitter 2 µs  


ADDITIONAL SOURCE CHARACTERISTICS

Noise
10 Hz to 20 MHz

< 20 mV peak to peak, < 3 mV RMS

  • 20 V range
Transient response time < 70 µs for the output to recover to within 0.1% for a 10% to 90% step change in load
Overshoot

Voltage:

  • < ±0.1% + 10 mV
  • Step size = 10% to 90% of range, resistive load, maximum current limit/compliance

Current:

Range change overshoot

Voltage:

  • < 300 mV + 0.1% of larger range
  • Overshoot into a 200 kΩ load, 20 MHz bandwidth

Current:13

  • < 300 mV/RLOAD + 5% of larger range
Guard offset voltage

< 4 mV

  • Current < 10 mA
Remote sense operating range14

Maximum voltage between HI and SENSE HI = 3 V

Maximum voltage between LO and SENSE LO = 3 V

Voltage output headroom

200 V range

  • Maximum output voltage = 202.3 V – (total voltage drop across source leads).
    Maximum 1 Ω source lead.

20 V range

  • Maximum output voltage = 23.3 V – (total voltage drop across source leads).
    Maximum 1 Ω source lead.
Overtemperature protection Internally sensed temperature overload puts the instrument in standby mode
Limit/compliance

Bipolar limit (compliance) set with a single value

Voltage:15

  • Minimum value is 20 mV; accuracy is the same as voltage source

Current:16

  • Minimum value is 100 pA; accuracy is the same as current source
Voltage source output settling time Time required to reach within 0.1% of final value after source level command is processed on a fixed range.
Voltage range Settling time
200 mV < 50 µs
2 V < 50 µs
20 V < 110 µs
200 V < 700 µs
Current source output settling time

Time required to reach within 0.1% of final value after source level command is processed on a fixed range

  • Values below for IOUT × RLOAD = 2 V
Current range Settling time
1.5 A and 1 A < 120 µs (RLOAD > 6 Ω)
100 mA and 10 mA < 80 µs
1 mA < 100 µs
100 µA < 150 µs
10 µA < 500 µs
1 µA < 2 ms
100 nA < 20 ms
10 nA < 40 ms
1 nA < 150 ms
 

13 With source settling set to SETTLE_SMOOTH_100NA
14 Add 50 µV to source accuracy specifications per volt of HI lead drop.
15 For sink operation (quadrants II and IV) without sink mode enabled, add 10% of compliance range and ±0.02% of limit settling to the corresponding voltage source accuracy specifications. For 200 mV range add an additional 120 mV of uncertainty. Specifications apply with sink mode enabled.
16 For sink operation (quadrants II and IV) without sink mode enabled, add 0.06% of limit range to the corresponding current limit accuracy specifications. Specifications apply with sink mode enabled.

ADDITIONAL MEASUREMENT CHARACTERISTICS

Contact check specifications17, 18


Speed Maximum measurement time
to memory for 60 Hz (50 Hz)
Accuracy (1 year)
23 °C ± 5 °C
± (% reading + ohms)
Fast 1.1 ms (1.2 ms) 5% + 10 Ω
Medium 4.1 ms (5 ms) 5% + 1 Ω
Slow 36 ms (42 ms) 5% + 0.3 Ω
Current measure settling time19

Time required to reach within 0.1% of final value after source level command is processed on a fixed range

Values below for VOUT = 2 V

Current range Settling time
1 mA < 100 µs
Input impedance > 100 TΩ

17 Includes measurement of SENSE HI to HI and SENSE LO to LO contact resistances.
18 Contact check is not available with the Model 2634B.
19 Compliance equal to 100 mA. Delay factor set to 1.


ADDITIONAL CHARACTERISTICS

Maximum load impedance Normal mode
10 nF
High‑capacitance mode
50 µF
Common mode voltage 250 V dc
Common mode isolation > 1 GΩ
< 4500 pF
Sense high input impedance > 100 TΩ
Maximum sense lead resistance 1 kΩ for rated accuracy
Overrange 101% of source range
102% of measure range

HIGH-CAPACITANCE MODE20, 21, 22

Accuracy specifications Accuracy specifications are applicable in both normal and high-capacitance modes.
Voltage source output settling time

Time required to reach within 0.1% of final value after source level command is processed on a fixed range.

Current limit = 1 A

Voltage range Settling time with CLOAD = 4.7 µF
200 mV < 600 µs
2 V < 600 µs
20 V < 1.5 ms
200 V < 20 ms
Current measure settling time

Time required to reach within 0.1% of final value after source level command is processed on a fixed range

Values below for VOUT = 2 V unless noted

Current range Settling time
1.5 A and 1A < 120 µs (RLOAD > 6 Ω)
100 mA and 10 mA < 100 µs
1 mA < 3 ms
100 µA < 3 ms
10 µA < 230 ms
1 µA < 230 ms
Capacitor leakage performance using HIGH-C scripts23

200 ms at 50 nA

  • Load = 5 µF in parallel with 10 MΩ
  • Test: 5 V step and measure
Mode change delay

Current ranges of 100 µA and above:

  • 11 ms delay for both in and out of high-capacitance mode

Current ranges below 100 µA:

  • 250 ms delay into high-capacitance mode
  • 11 ms delay out of high-capacitance mode
Voltmeter input impedance 30 GΩ in parallel with 3300 pF
Noise 10 Hz to 20 MHz

< 30 mV peak to peak

  • 20 V range
Range change overshoot

Voltage:

  • < 400 mV + 0.1% of larger range
  • For 20 V range and below
  • Overshoot into a 200 kΩ load, 20 MHz bandwidth
 

20 High-Capacitance Mode specifications are for dc measurements only.
21 100 nA range is not available in High-Capacitance Mode.
22 High-Capacitance Mode utilizes locked ranges. Auto range is disabled.
23 Part of KI Factory scripts. See the Series 2600B Reference Manual for details.


MEASUREMENT SPEED CHARACTERISTICS24, 25, 26

Maximum sweep operation rates (operations per second) for 60 Hz (50 Hz):

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 59
(49)
59
(49)
59
(49)
59
(49)
59
(49)
59
(49)

Maximum single measurement rates (operations per second) for 60 Hz (50 Hz):

A/D converter speed Trigger origin Measure to GPIB Source measure to GPIB Source measure pass/fail to GPIB
0.001 NPLC Internal 1900 (1800) 1400 (1400) 1400 (1400)
0.01 NPLC Internal 1450 (1400) 1200 (1200) 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 > 7000 per second for > 10 µA. When changing to or from a range ≥ 1 A, maximum rate is >> 2200/second.
Maximum source range change rate > 400 per second > 10 µA. When changing to or from a range ≥ 1 A, maximum rate is >> 190/second.
Maximum source function change rate > 1000 per second
Command processing time

< 1 ms

  • Maximum time required for the output to begin to change after receiving the smua.source.levelv or smua.source.leveli command.

24 Tests performed with a Model 2636B 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, VISA version 4.1).
25 Exclude current measurement ranges less than 1 mA.
26 With default measurement delays and filters disabled.


TRIGGERING AND SYNCHRONIZATION CHARACTERISTICS

Triggering

Trigger in to trigger out 0.5 μs
Trigger in to source change27 10 μs
Trigger timer accuracy ±2 μs
Source change after LXI trigger 280 μs

Synchronization

Multi-node synchronized source change27 < 0.5 μs
Single-node synchronized source change27 < 0.5 μs

27 Fixed source range with no polarity change.


SUPPLEMENTAL INFORMATION

Front-panel interface Two-line vacuum fluorescent display (VFD) with keypad and navigation wheel
Display
  • Show error messages and user-defined messages
  • Display source and limit settings
  • Show current and voltage measurements
  • View measurements stored in dedicated reading buffers
Keypad operations
  • Change host interface settings
  • Save and restore instrument setups
  • Load and run factory and user-defined test scripts that prompt for input and send results to the display
  • Store measurements into dedicated reading buffers
Programming Embedded Test Script Processor (TSP™) accessible from any host interface; responds to high-speed test scripts comprised of remote commands and statements (for example, branching, looping, and math); able to execute test scripts stored in memory without host intervention.
Minimum user memory available 16 MB (approximately 250,000 lines of TSP code)
Reading buffers

Nonvolatile memory uses dedicated storage areas reserved for measurement data. Reading buffers are arrays of measurement elements. Each element can store the following items:

  • Measurement
  • Source setting (at the time the measurement was taken)
  • Measurement status
  • Range information
  • Timestamp

Reading buffers can be filled using the front-panel STORE key, and retrieved using the RECALL key or host interface.

Buffer size, with timestamp and source setting > 60,000 samples
Buffer size, without timestamp and source setting > 140,000 samples

TIMING

Timer Free-running 47-bit counter with 1 MHz clock input. Reset each time instrument power is turned on. If the instrument is not turned off, the timer is automatically reset to zero (0) every four years.
Timestamp TIMER value is automatically saved when each measurement is triggered
Resolution 1 μs
Timestamp accuracy ±100 ppm

GENERAL SPECIFICATIONS

IEEE-488

IEEE Std 488.1 compliant. Supports IEEE Std 488.2 common commands and status model topology
RS-232
  • Baud rates from 300 bps to 115,200 bps
  • Programmable number of data bits, parity type, and flow control (RTS/CTS hardware or none)
  • When not programmed as the active host interface, the 2634B, 2635B, and 2636B can use the RS 232 interface to control other instruments
Ethernet RJ-45 connector, LXI version 1.4 Core 2011, 10/100BaseT, Auto-MDIX
LXI compliance LXI version 1.4 Core 2011
Expansion interface28
  • The TSP-Link™ expansion interface allows TSP-enabled instruments to trigger and communicate with each other
  • Cable type: Category 5e or higher LAN crossover cable
  • Three meter (9.84 ft) maximum between each TSP-enabled instrument
  • A maximum of 32 TSP-Link nodes can be interconnected
  • Each source-measure instrument uses one TSP-Link node
USB Control (Rear) USB 2.0 Device: USB-TMC488 protocol
USB File System (Front) USB 2.0 Host: Mass storage class device
Power supply 100 V ac to 240 V ac, 50 Hz or 60 Hz (auto sensing), 240 VA maximum
Cooling Forced air; side intake and rear exhaust. One side must be unobstructed when rack mounted.
Warranty 1 year
EMC Conforms to European Union EMC Directive
Safety

NRTL listed to UL61010-1:2008 and CSA C22.2 No. 61010-1

Conforms to European Union Low Voltage Directive

Environment

For indoor use only

Altitude: Maximum 2000 m (6562 ft) above sea level

Operating: 0 °C to 50 °C, 70% relative humidity up to 35 °C. Derate 3% relative humidity/°C, 35 °C to 50 °C

Storage: −25 °C to 65 °C

Dimensions

Rack mount: 89 mm high × 213 mm wide × 460 mm deep (3.5 in. × 8.4 in. × 17.5 in.)

Bench configuration (with handle and feet): 104 mm high × 238 mm wide × 460 mm deep (4.1 in. × 9.4 in. × 17.5 in.)

Weight

2635B: 4.75 kg (10.4 lb)

2634B and 2636B: 5.50 kg (12.0 lb)


28 Fixed source range with no polarity change.


Digital I/O Interface

Digital I/O interface29
Connector: 25-pin female D
Input/output pins: 14 open drain I/O bits
Absolute maximum input voltage: 5.25 V
Absolute minimum input voltage: −0.25 V
Maximum logic low input voltage: 0.7 V, +850 µA maximum
Minimum logic high input voltage: 2.1 V, +570 µA
Maximum source current (flowing out of digital I/O bit): +960 µA
Maximum sink current at maximum logic low voltage (0.7 ): −5.0 mA

Absolute maximum sink current (flowing into digital I/O pin): −11 mA
5 V power supply pins: Limited to 250 mA total, solid-state fuse protected

Safety interlock pin:

A signal of > 3.4 V at 24 mA (at an absolute maximum of 6 V) must be externally applied to ensure 200 V operation. Connect the 5 V output and the interlock input of the 25-pin digital I/O connector on the back of the 2634B, 2635B, or 2636B to the switch in your fixture. The output will be disabled when the interlock signal is < 0.45 V. Absolute maximum input is −0.4 V to +6.0 V.


29 Fixed source range with no polarity change.