Keithley SourceMeter 3A 2420 Service Manual Download

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SourceMeter

Line Specifications

2400, 2400-C, 2410, 2410-C,
2420, 2420-C, 2425, 2425-C,
2430, 2430-C, 2440, 2440-C

ADDITIONAL SOURCE SPECIFICATIONS

TRANSIENT RESPONSE TIME: 30µs 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
<nrf> command. Autorange On: 10ms. Autorange Off: 7ms.

OUTPUT SETTLING TIME: Time required to reach 0.1% of final value

after command is processed. 100µs typical. Resistive load. 10µA to
100mA range.

OUTPUT SLEW RATE (±30%):

Model 2400:

0.5V/µs, 200V range, 100mA compliance.
0.08V/µs, 20V range, 100mA compliance.

Model 2410:

0.5V/µs, 1000V range, 20mA compliance.
0.08V/µs, 20V range, 100mA compliance.

Model 2420:

0.14V/µs, 60V range, 100mA compliance.
0.08V/µs, 20V range, 100mA compliance.

Model 2425, 2430: 0.25V/µs, 100V range, 100mA compliance.

0.08V/µs, 20V range, 100mA compliance.

Model 2440:

0.25V/µs, 40V range, 100mA compliance.
0.08V/µs, 10V range, 100mA compliance.

DC FLOATING VOLTAGE: Output can be floated up to ±250VDC (Model

2440 ±40VDC) from chassis ground.

REMOTE SENSE: Up to 1V 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 100k

Ω

load, 10Hz to 1MHz BW, adjacent ranges: 100mV typical, except
20V/200V (20V/60V on Model 2420), 20V/100V on Model 2425 and
2430, range boundary, and Model 2440.

MINIMUM COMPLIANCE VALUE: 0.1% of range.

ADDITIONAL PULSE MODE SOURCE
SPECIFICATIONS

MAXIMUM DUTY CYCLE: 8%, hardware limited, 10A range only. All other

ranges 100%.

MAXIMUM PULSE WIDTH: 5ms from 90% rising to 90% falling edge,

2.5ms 10A range.

MINIMUM PULSE WIDTH: 150µs.

MINIMUM PULSE RESOLUTION: 50µs typical, 70µs max., limited by sys-

tem jitter.

SOURCE ACCURACY: Determined by settling time and source range

specifications.

OUTPUT SETTLING TIME 0.1%:

800µs typ., source I = 10A into 10

Ω

, limited by voltage slew rate.

500µs typ., source I = 10A into 1

Ω

, limited by voltage slew rate.

OUTPUT SLEW RATE:

Voltage (10

Ω

load):

0.25V/µs ±30% on 100V range
0.08V/µs ±30% on 20V range, 10A range.

Current (0

Ω

load):

0.25A/µs ±30% on 100V range
0.08A/µs ±30% on 20V range, 10A range.

VOLTAGE PROGRAMMING ACCURACY (Local or Remote Sense)

ACCURACY (1 Year)

NOISE

PROGRAMMING

23°C ±5°C

(peak-peak)

MODEL

RANGE

RESOLUTION

±(% rdg. + volts)

0.1Hz – 10Hz

ALL:

200.000 mV

5 µV

0.02% + 600 µV

5 µV (10µV 2430, 2440)

2.00000

50 µV

0.02% + 600 µV

50 µV

2400 Only:

20.0000

500 µV

0.02% + 2.4 mV

500 µV

200.000

5 mV

0.02% + 24 mV

5 mV

2410 Only:

20.0000

500 µV

0.02% + 2.4 mV

500 µV

1000.00

50 mV

0.02% + 100 mV

20 mV

2420 Only:

20.0000

500 µV

0.02% + 2.4 mV

500 µV

60.0000

1.5 mV

0.02% + 7.2 mV

1.5 mV

2425 and

20.0000

500 µV

0.02% + 2.4 mV

500 µV

2430 Only: 100.0000

2.5 mV

0.02% + 12 mV

2.5 mV

2440 Only:

10.0000

500 µV

0.02% + 1.2 mV

250 µV

40.0000

5 mV

0.02% + 4.8 mV

1 mV

TEMPERATURE COEFFICIENT (0°–18°C & 28°–50°C): ±(0.15

accuracy specification)/°C.

MAX. OUTPUT POWER: 22W (66W for Model 2420, 110W for Model 2425 and 2430, 55W for

Model 2440), four quadrant source or sink operation.

SOURCE/SINK LIMITS: Model 2400: ±21V @ ±1.05A, ±210V @ ±105 mA.

Model 2410: ±21V @ ±1.05A, ±1100V @ ±21 mA.
Model 2420: ±21V @ ±3.15A, ±63V @ ±1.05A.
Model 2425: ±21V @ ±3.15A, ±105V @ ±1.05A.
Model 2430: ±105V @ ±1.05A, ±105V @ ±10.5A (pulse mode only).
Model 2440: ±10.5V @ ±5.25A, ±42V @ ±1.05A.

VOLTAGE REGULATION: Line: 0.01% of range. Load: 0.01% of range + 100µV.

NOISE 10Hz–1MHz (p-p): 10mV (50mV typ., Models 2430 and 2440).

OVER VOLTAGE PROTECTION: User selectable values, 5% tolerance. Factory default = none.

CURRENT LIMIT: Bipolar current limit (compliance) set with single value. Min. 0.1% of range.

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

CURRENT PROGRAMMING ACCURACY (Local or Remote Sense)

ACCURACY (1 Year)

NOISE

PROGRAMMING

23°C ±5°C

(peak-peak)

MODEL

RANGE

RESOLUTION

±(% rdg. + amps)

0.1Hz – 10Hz

2400, 2410:

1.00000 µA

50 pA

0.035% + 600 pA

5 pA

ALL:

10.0000 µA

500 pA

0.033% +

2 nA

5 nA

100.000 µA

5 nA

0.031% + 20 nA

50 nA

1.00000 mA

50 nA

0.034% + 200 nA

500 nA

2400, 2420,2425, 10.0000 mA

500 nA

0.045% +

2 µA

50 µA

2430, 2440:
2410 Only:

20.0000 mA

500 nA

0.045% +

4 µA

200 nA

ALL:

100.000 mA

5 µA

0.066% + 20 µA

1 µA

2400, 2410:

1.00000

50 µA

0.27% + 900 µA

100 µA

2420, 2425,

1.00000

50 µA

0.067% + 900 µA

50 µA

2430, 2440:
2420, 2425:

3.00000

150 µA

0.059% + 2.7 mA

150 µA

2430:

3.00000

500 µA

0.059% + 2.8 mA

300 µA

10.00000

2440:

5.00000

50 µA

0.10% + 5.4 mA

500 µA

TEMPERATURE COEFFICIENT (0°–18°C & 28°–50°C): ±(0.15

accuracy specification)/°C.

MAX. OUTPUT POWER: 22W (66W for Model 2420, 110W for Model 2425 and 2430, 55W for

Model 2440), four quadrant source or sink operation.

SOURCE/SINK LIMITS: Model 2400: ±1.05A @ ±21V, ±105 mA @ ±210V.

Model 2410: ±1.05A @ ±21V, ±21 mA @ ±1100V.
Model 2420: ±3.15A @ ±21V, ±1.05A @ ±63V.
Model 2425: ±3.15A @ ±21V, ±1.05A @ ±105V.
Model 2430: ±1.05A @ ±105V, ±10.5A @ ±105V (pulse mode only).
Model 2440: ±5.25A @ ±10.5V, ±1.05A @ ±42V.

CURRENT REGULATION: Line: 0.01% of range. Load: 0.01% of range (except Model 2440 5A

range 0.05%) + 100pA.

VOLTAGE LIMIT: Bipolar voltage limit (compliance) set with single value. Min. 0.1% of range.

OVERSHOOT: <0.1% typical (1mA step, RL = 10k

Ω

, 20V range for Model 2400, 2410, 2420, 2425,

2430), (10V range for Model 2440).

SOURCE SPECIFICATIONS

1 2400, 2410 Only: Specifications valid for continuous output currents below

105mA. For operation above 105mA continuous for > 1 minute, derate accuracy
10%/35mA above 105mA.

2 Full operation (1A) regardless of load to 30°C (50°C for Model 2420, 2440). Above

30°C (50°C for Model 2420, 2440) ambient, derate 35mA/°C and prorate 35mA/

Ω

load. 4-wire mode. For current sink operation on 1A, 3A, or 5A 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 cal-
culate allowable duty cycle for specific conditions.

3 For sink mode, 1µA to 100mA range, accuracy is:

Model 2400: ±(0.15% + offset*4)
Models 2410, 2420, 2425, 2430, 2440: ±(0.5% + offset*3)

For 1A range, accuracy is:

Model 2400: ±(1.5% + offset*8)
Models 2410, 2420, 2425, 2430, 2440: ±(1.5% + offset*3)

4 10A range only in pulse mode. Limited to 2.5ms pulse width maximum. 10% duty

cycle maximum.

Rev. A

5/17/01