Keithley System SourceMeter 2601B, System SourceMeter 2602B, System SourceMeter 2604B Instrument Specifications

Models 2601B, 2602B and 2604B

SPEC-2602B Rev. B / February 2014 1 of 13

 Four-quadrant source or sink operation

 Four-quadrant source or sink operation

Keithley Instruments, Inc. System SourceMeter

28775 Aurora Road
Cleveland, Ohio 44139

1-888-KEITHLEY

http://www.keithley.com

Instrument Specifications

®

SPECIFICATION CONDITIONS

This document contains specifications and supp lemental in formation for t he Mod els 2601B, 2602B and
2604B System SourceMeter

®

instrument. Spec ificati ons are the st andar ds against whic h the Models
2601B, 2602B and 2604B are tested. Upon leaving the factory, the Models 2601B, 2602B and 2604B meet
these sp ecifications. Supp l em ental and typ ical valu es are nonw ar ran ted, appl y at 23 °C, and are provid ed
solely as us eful information.

Source and measu r emen t accur acies are speci fied at the Models 2601B, 2602B and 2604B terminals
under these conditions:

1. 23 °C ± 5 ° C , < 70 perc ent relativ e hum idity

2. After a two-hour w ar m-up period

3. Spee d no r ma l (1 NP LC)

4. A/D autozero enabled

5. Remote sense operation or properly zer oed local operation

6. Cal i bration period: One year

DC POWER SPECIFICATIONS

Voltage Current
Maximum output

power and
source/sink limits1

40.4 W maxi mum

 ± (40.4 V at 1.0 A, -1.0 A)
 ± (6.06 V at 3.0 A, -3.0 A)

40.4 W maxi mum

 ± (1.01 A at 40 V, -40 V)
 ± (3.03 A at 6 V, -6 V)

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

1

Full power source operation regardless of loa d to 30 °C ambient temperature. Abov e 30 °C or power sink operation, refer to “Operat ing

Boundaries” in the Series 2600B Reference Manual for additional power derating information.

Specifications are subject to change without notice

Models 2601B, 2602B and 2604B System SourceMeter® Instrument Specifications

2 of 13 SPEC-2602B Rev. B / February 2014

VOLTAGE ACCURACY SPECIFICATIONS

2,3

Source Measure

Range

Programming
resolution

Accuracy

± (% reading + volts)

Typical Noise
(Peak to Peak)

0.1 Hz to 10 Hz

Display
resolution

Accuracy4

± (% reading + volts)

100 mV 5 µV 0.02 % + 250 µV 20 µV 100 nV 0.015 % + 150 µV
1 V 50 µV 0.02 % + 400 µV 50 µV 1 µV 0.015 % + 200 µV
6 V 50 µV 0.02 % + 1.8 mV 100 µV 1 µV 0.015 % + 1 mV
40 V 500 µV 0.02 % + 12 mV 500 µV 10 µV 0.015 % + 8 mV

CURRENT ACCURACY SPECIFICATIONS2

Source Measure

Programming
resolution

Range

100 nA 2 pA 0.06 % + 100 pA 5 pA 100 fA 0.05 % + 100 pA
1 µA 20 pA 0.03 % + 800 pA 25 pA 1 pA 0.025 % + 500 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

Accuracy

± (% reading + amperes)

Typical Noise
(Peak to Peak)

0.1 Hz to 10 Hz

Display
resolution

Accuracy4

± (% reading + amperes)

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
3 A 20 µA 0.06 % + 4 mA 150 µA 1 µA 0.05 % + 3.5 mA
10 A5 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 applic ab le 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 r eading term for resistive

loads usi ng the table below.

NPLC setting 100 mV range 1 V and 40 V ranges 100 nA range 1 µA to 100 m A ranges 1 A to 3 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

10 A range is accessible in pulse mode only. A cc uracy specificatio ns for 10 A range are typical.

Specifications are subject to change without notice

Models 2601B, 2602B and 2604B System SourceMeter Instrument Specifications

SPEC-2602B Rev. B / February 2014 3 of 13

SUPPLEMENTAL CHARAC TERISTICS

The followin g specific ation s are supplem ental charact er isti cs t hat provide additional i nform ation about
ins trum ent functi ons and perform ance. These characteristics are nonwarranted specifications; they
describe the typical performance of th e Models 2601B, 2602B and 2604B.

PULSE CHARACTERISTI CS

Pulse region specifications Pulse region specifications

Region

quadrant diagram

Region
maximums

1 1 A at 40 V DC, no limit 100 %
1 3 A at 6 V DC, no limit 100 %
2 1.5 A at 40 V 100 ms 25 %
3 5 A at 35 V 4 ms 4 %
4 10 A at 20 V 1.8 ms 1 %

6

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

Maximum pulse
width6

Maximum duty
cycle7

7

Thermally limited in sink mode (quadrants 2 and 4) and ambient temperatures above 30° C. See power equations in the S e ries 260 0B

Reference Manual for more information.

Specifications are subject to change without notice

Models 2601B, 2602B and 2604B System SourceMeter® Instrument Specifications

4 of 13 SPEC-2602B Rev. B / February 2014

Minimum programmable

100 µs

be longer than 100 ms.

Source value

Load

Source settling time
(% of range)

Minimum pulse
width

6 V

2 Ω

0.2 %

150 µs

20 V

2 Ω

1 %

200 µs

35 V

7 Ω

0.5 %

500 µs

40 V

27 Ω

0.1 %

400 µs

1.5 A

27 Ω

0.1 %

1.5 ms

3 A

2 Ω

0.2 %

150 µs

5 A

7 Ω

0.5 %

500 µs

10 A

2 Ω

0.5 %

200 µs

6 V range

See Current source output settling time for additional test conditions

< 300 mV/R

load

+ 5 % of larger range

Current < 10 mA

pulse width6

Pulse width programming
resolution

Pulse width programming
accuracy

Pulse width jitter

 Note: Minimum pulse width for settled source at a given I/V output and load can

1 µs

± 5 µs

2 µs

ADDITIONAL SOURCE CHARACTERISTICS

Noise
10 Hz to 20 MHz

Transient response time

< 20 mV peak-peak, < 3 mV RMS



< 70 µs for the output to recover to within 0.1 % for a 10 % to 90 % step change in load.

Overshoot

Range change overshoot

Guard offset voltage

Remote sense operating
range9

Voltage:

 < ±0.1 % + 10 mV
 Step size = 10 % to 90 % of range, resistive load, maximum current

limit/compliance

Current:

 < ±0.1 %
 Step size = 10 % to 90 % of range, resistive load



Voltage:

 < 300 mV + 0.1 % of larger range
 Overshoot into a 100 kΩ load, 20 MHz bandwidth

Current:8



< 4 mV



Maximum voltage between HI and SENSE HI = 3 V
Maximum voltage between LO and SENSE LO = 3 V

8

With source settling set to SETTLE_SMOOTH_100NA

9

Add 50 µV to source accuracy specifications per volt of HI lead drop.

Specifications are subject to change without notice