Keithley SourceMeter 2400, Service Manual, Page: 98 / 137

SPEC-2420
HW 1/17/05
Rev. C
Page 1 of 3
2420 and 2420-C SourceMeter
®
Specifications
SOURCE SPECIFICATIONS
VOLTAGE PROGRAMMING ACCURACY (LOCAL OR REMOTE SENSE)
RANGE
PROGRAMMING
RESOLUTION
ACCURACY (1 Year)
23°C
±
5°C
±
(% rdg. + volts)
NOISE
(peak-peak)
0.1Hz – 10Hz
200.00 mV 5 µV 0.02% + 600 µV 5 µV
2.00000 V 50 µV 0.02% + 600 µV 50 µV
20.0000 V 500 µV 0.02% + 2.4 mV 500 µV
60.0000 V 1.5 mV 0.02% + 7.2 mV 1.5 mV
TEMPERATURE COEFFICIENT (0°-18°C & 28°-50°C):
±
(0.15 × accuracy specification)/ °C.
MAX. OUTPUT POWER: 66W, four quadrant source or sink operation.
SOURCE/SINK LIMITS:
±
21V @
±
3.15A,
±
63V @
±
1.05A.
VOLTAGE REGULATION: Line: 0.01% of range. Load: 0.01% of range + 100 µV .
NOISE 10Hz – 1MHz (p-p): 10mV typical into a resistive load.
OVERVOLTAGE 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)
RANGE
PROGRAMMING
RESOLUTION
ACCURACY (1 Year)
2
23°C
±
5°C
±
(% rdg. + amps)
NOISE
(peak-peak)
0.1Hz – 10Hz
10.0000 µA 500 pA 0.033% + 2 nA 50 pA
100.000 µA 5 nA 0.031% + 20 nA 500 pA
1.00000 mA 50 nA 0.034% + 200 nA 5 nA
10.0000 mA 500 nA 0.045% + 2 µA 50 nA
100.000 mA 5 µA 0.066% + 20 µA 500 nA
1.00000 A
1
50 µA 0.067% + 900 µA 50 µA
3.00000 A
1
50 µA 0.059% + 2.7 mA 150 µA
TEMPERATURE COEFFICIENT (0°-18°C & 28°-50°C):
±
(0.15 × accuracy specification)/ °C.
MAX. OUTPUT POWER: 66W, four quadrant source or sink operation.
SOURCE/SINK LIMITS:
±
3.15A @
±
21V,
±
1.05A @
±
63V.
CURRENT REGULATION: Line: 0.01% of range. Load: 0.01% of range + 100
pA
.
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).
ADDITIONAL SOURCE
SPECIFICATIONS
TRANSIENT RESPONSE TIME: 30 µs 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%):
0.14V/µs, 60V range, 100mA compliance.
0.08V/µs, 20V range, 100mA compliance.
DC FLOATING VOLTAGE: Output can be floated up to
±250VDC 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 range
changes between 200mV, 2V, and 20V ranges, 100mV
typical.
MINIMUM COMPLIANCE VALUE: 0.1% of range.
1. Full power source operation regardless of load to 30°C ambient.
Above 30°C and/or power sink operation, refer to the Power
Equations section of the User’s Manual.
2. For sink mode, 10µA to 100mA range, accuracy is:
±(0.5% + offset*3)
For 1A and 3A range, accuracy is:
±(1.5% + offset*3)