Datasheet

DC POWER SUPPLIES
www.keithley.com
1.888.KEITHLEY
(U.S. only)
A Greater Measure of Confidence
A Tektronix Company
Series 2281S
Single Channel, Precision DC Power
Supply & Battery Simulator
A choice of front or rear panel terminals provides enhanced connection
flexibility. For maximum voltage accuracy, 4-wire remote sensing ensures
that the output voltage programmed is actually the level applied to the
load. In addition, the sense lines are monitored in order to detect any
breaks in them. These features ensure any production problems can be
quickly identified and corrected. Series 2281S supplies can be controlled
via their built-in GPIB, USB, or LAN interfaces. The USB interface is test
and measurement system (TMC) compliant. The LXI Core compliant
LAN interface supports controlling and monitoring a Series 2281S supply
remotely, so test engineers can always access the power supply and view
measurements, even if they’re located on a different continent than their
test systems.
Figure 7. 2281S rear panel. (need a back panel picture here)
Specifications 23°C ±5°C with 1-hour instrument warm-up.
DC OUTPUT RATINGS
VOLTAGE: 0 to 20V.
CURRENT: 0 to 6A.
MAXIMUM POWER: 120W.
VOLTAGE
1
SOURCE SETTING
ACCURACY: ±(0.02% + 3mV).
RESOLUTION: 1mV.
MEASUREMENT
2
(0.5V over-range)
ACCURACY: ±(0.02% + 2 mV).
RESOLUTION: 0.1mV.
ADDITIONAL OFFSET AT FASTER MEASUREMENT SETTINGS
5½ (0.1 PLC): 0.21mV.
4½ (0.01 PLC): 1.44mV.
3½ (0.002 PLC): 7.60mV.
REGULATION
LOAD: ±(0.01% + 2mV).
LINE: ±(0.01% + 1mV).
OUTPUT RIPPLE AND NOISE
BANDWIDTH 20Hz–20MHz: <1mV RMS, <6mV p-p.
LOAD TRANSIENT RECOVERY TIME: Resistive load change 50% load to 100% load or 100%
load to 50% load: <50µs to within 15mV of V-set.
SLEW RATE: Rising Voltage and Falling Voltage: 10V/s to 100V/s. Up to 1000V/s under limited
conditions
3
. 100V/s (default).
MAXIMUM SOURCE VOLTAGE DROP PER LEAD: To Maintain Specified Voltage Accuracy: 1V.
MAXIMUM SENSE HI AND SENSE LO LEAD RESISTANCE: To Maintain Specified Voltage
Accuracy: 2Ω.
CURRENT
CURRENT LIMIT SETTING
FULL-SCALE AMPS: 6.1A.
ACCURACY: ±(0.05% + 5mA).
RESOLUTION: 0.1mA.
MEASUR EMENT
4
(120% over-range except 10A)
Range Resolution Accuracy
10 mA 10 nA ±(0.04% + 10 µA)
100 mA 100 nA ±(0.04% + 10 µA)
1 A 1 µA ±(0.04% + 250 µA)
10 A 10 µA ±(0.05% + 250 µA)
ADDITIONAL OFFSET AT FASTER MEASUREMENT SETTINGS
9
Measure Resolution
and (NPLC) Range
Resolution
5½ (0.1 PLC)
10 mA 5.0 µA
100 mA 20 µA
1 A 80 µA
10 A 2.0 mA
4½ (0.01 PLC)
10 mA 20 µA
100 mA 40 µA
1 A 500 µA
10 A 10 mA
3½ (0.002 PLC)
10 mA 30 µA
100 mA 250 µA
1 A 20 mA
10 A 75 mA
CURRENT PULSE MEASUREMENT
5
MINIMUM PULSE WIDTH (10mA and 100mA range)
6
: 2ms.
MINIMUM PULSE WIDTH (1A AND 10A RANGE)
6
: 140µs.
MINIMUM TIME TO CAPTURE TWO CONSECUTIVE PULSES: 0.5ms.
REGULATION
LOAD: ±(0.01% + 0.25 mA).
LINE: ±(0.01% ± 0.25 mA).
OUTPUT RIPPLE AND NOISE
BANDWIDTH 20Hz–20MHz: <3mA RMS.
MAXIMUM CONTINUOUS AVERAGE SINK CURRENT
NON-PROGRAMMABLE: 1.02A ± 0.1A (typical).
Series 2281S specifications
Single channel, precision DC power supply and battery simulator