Datasheet
DC POWER SUPPLIES
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY
(U.S. only)
A Tektronix Company
Series 2281S
Single Channel, Precision DC Power
Supply & Battery Simulator
SYSTEM MEASUREMENT SPEEDS
Settings Concurrent ( V+I )
Readings/s
Measure Resolution
and (NPLC)
Autozero
On
60 Hz (50 Hz)
Autozero
OFF
60 Hz (50 Hz)
‘Read?’ with BUS Transfer
6½ (5 PLC) 2.0 (1.5) 5.4 (4.5)
6½ (1 PLC) 9.0 (8.0) 20 (18)
5½ (0.1 PLC) 48 (38) 50 (48)
‘*TRG and TRACe:DATa?’ with
BUS Transfer
4½ (0.01 PLC)
7
680 (646)
3½ (0.002 PLC)
7
845 (833)
OTHER TIMING DATA
CV TO CC TRANSITION TIME (V-Set = 5V, I-limit = 0.5A, Resistive Load change 25Ω to
2.5Ω): 2.4ms.
CC TO CV TRANSITION TIME (V-Set = 5V, I-limit = 0.5A, Resistive Load change 2.5Ω to
25Ω): 1.1ms.
FUNCTION CHANGE (from detection of bus command to function change completed):
10ms (typical).
OUTPUT OFF/ON (from detection of bus command to voltage beginning to decrease):
5ms (typical).
REVERSE LEADS ACTUATION: >1.5ms.
PROTECTION
OVERVOLTAGE PROTECTION (OVP)
SETTING ACCURACY: ±(0.25% + 0.25V).
RESOLUTION: 125mV.
RESPONSE TIME: <1.5ms.
OVERCURRENT PROTECTION (OCP)
SETTING ACCURACY: ±(0.25% + 0.10A).
RESOLUTION: 25mA.
RESPONSE TIME: <1.5ms.
OVERTEMPERATURE PROTECTION (OTP)
OUTPUT TURN-OFF TEMPERATURE: >93°C (typical).
RESPONSE TIME: <1.5 ms (typical)
8
.
NOTES
1. Specifications based on using remote sense connections. For 2-wire connections, add an offset of 0.5mV/A
(front terminals).
2. 6½-digit resolution, 1 PLC reading rate, Filter on, Autozero on.
3. 100V/s to 1000V/s slew rate is limited to 5V changes at a maximum of 3A for the 2281S-20-6 supply.
4. 6½-digit resolution, 1 PLC reading rate, filter on, autozero on.
5. Settings: Autozero off, 0.002 PLC, Arm Source:external, Trigger Source:Immediate.
6. Time includes trigger detection, latency plus jitter of start of measurement, and measurement integration time,
0.002 PLC.
7. Settings:Autozero Off, Output On, Output Delay Off, Fixed Source:Voltage.
8. Settings: Autozero Off, Output On, Output Delay Off, Fixed Source:Voltage, Arm or Measure count 1000.
Series 2281S specifications
Series 2281S specifications