Keithley Instruments, Inc.
Cleveland, Ohio 44139
DRN.
CKD.
APP.
DATE
DATE
DATE
PART NUMBER
LTR REVISIONS APP. DATE
FORM 28777A-SBG
BRUNING 40-21 62198-SBG
PURCHASED ITEM
SPECIFICATIONS
2304A High-Speed Precision Power Supply
DC VOLTAGE OUTPUT (1 Year, 23°C ± 5°C)
OUTPUT VOLTAGE:
0 to +20VDC (for Normal Output Response).
0 to +15VDC (for Enhanced Output Response).
OUTPUT ACCURACY: ±(0.05% + 10mV).
PROGRAMMING RESOLUTION: 5mV.
READBACK ACCURACY
1
: ±(0.05% + 10mV).
READBACK RESOLUTION: 1mV.
OUTPUT VOLTAGE SETTLING TIME: 5ms to within stated accuracy.
LOAD REGULATION: 0.01% + 2mV.
LINE REGULATION: 0.5mV.
STABILITY
2
: 0.01% + 0.5mV.
TRANSIENT RESPONSE TO 1000% LOAD CHANGE:
NORMAL MODE:
Transient Recovery Time
3
: <50µs to within 100mV of previous level.
<100µs to within 20mV of previous level.
ENHANCED MODE:
Transient Recovery Time
3,4
:<40µs to within 100mV of previous level.
<80µs to within 20mV of previous level.
Transient Voltage Drop: <100mV, typical.
3
<200mV, typical.
4
REMOTE SENSE: Automatic, 2V max. drop in each lead. Add 2mV to the voltage load
regulation specification for each 1V change in the negative output lead due to load
current change.
DC CURRENT (1 Year, 23°C ± 5°C)
OUTPUT CURRENT: 5A max. (not intended to be operated in parallel).
COMPLIANCE ACCURACY: ±(0.16% + 5mA)
5.
PROGRAMMED COMPLIANCE RESOLUTION: 1.25mA.
READBACK ACCURACY
1
5A range: ±(0.2% + 1mA). 5mA range: ±(0.2% + 1µA).
READBACK RESOLUTION
5A range: 100µA. 5mA range: 0.1µA.
CURRENT SINK CAPACITY:
3A max. (for Normal Output Response).
1A
6
(for Enhanced Output Response).
LOAD REGULATION: 0.01% + 1mA.
LINE REGULATION: 0.5mA.
STABILITY
4
: 0.01% + 50µA.
DIGITAL VOLTMETER INPUT(1 Year, 23°C ± 5°C)
INPUT VOLTAGE RANGE: 0 to +20VDC.
INPUT IMPEDANCE: 10
10
Ω typical.
MAXIMUM VOLTAGE (either input terminal) WITH RESPECT TO OUTPUT LOW: –3V,
+22V.
READING ACCURACY
1
: ±(0.05% + 10mV).
READING RESOLUTION: 1mV.
DC GENERAL
MEASUREMENT TIME CHOICES: 0.01 to 10 PLC
7
, in 0.01PLC steps.
AVERAGE READINGS: 1 to 10.
READING TIME
1, 8,9
: 31ms, typical.
PULSE CURRENT MEASUREMENT OPERATION
TRIGGER LEVEL: 5mA to 5A, in 5mA steps.
TRIGGER DELAY: 0 to 100ms, in 10µs steps.
INTERNAL TRIGGER DELAY: 25µs.
HIGH/LOW/AVERAGE MODE:
Measurement Aperture Settings: 33.3µs to 833ms, in 33.3µs steps.
Average Readings: 1 to 100.
BURST MODE:
Measurement Aperture: 33.3µs.
Conversion Rate: 3600/second, typical.
Number of Samples: 1 to 5000.
Transfer Samples Across IEEE Bus in Binary Mode: 4800 bytes/second, typical.
LONG INTEGRATION MODE : 11
Measurement time: 850ms (840ms) to 60 seconds in 16.7ms (20ms) steps.
GENERAL
ISOLATION (LOW-EARTH): 22VDC max.
PROGRAMMING: IEEE-488.2 (SCPI).
USER-DEFINABLE POWER-UP STATES: 5.
REAR PANEL CONNECTOR: 8-position quick disconnect terminal block for output
(4), sense (2), and DVM (2).
RELAY CONTROL JACK: 2-channel, sink 150mA max., 15V max. Accepts 0.173 in.
Bantam-type plug (CS-1003-1).
TEMPERATURE COEFFICIENT (outside 23°C ±5°C): Derate accuracy specification by
(0.1 × specification)/°C.
OPERATING TEMPERATURE:
0° to 50°C (50W
10
normal response, 25W
10
enhanced response).
0° to 35°C (100W
10
normal response, 75W
10
enhanced response).
STORAGE TEMPERATURE: –20° to 70°C.
HUMIDITY: <80% @ 35°C non-condensing.
POWER CONSUMPTION: 200VA max.
REMOTE DISPLAY/KEYPAD OPTION: Disables standard front panel.
DIMENSIONS: 89mm high × 213mm wide × 360mm deep (3
1
⁄
2
in × 8
1
⁄
2
in × 14
3
⁄
16
in).
SHIPPING WEIGHT: 5.4kg (12 lbs).
INPUT POWER: 100V–240V AC, 50 or 60Hz (auto detected at power-up).
WARRANTY: One year parts and labor on materials and workmanship.
EMC: Conforms with European Union Directive 89/336/EEC EN 55011, EN 50082-1,
EN 61000-3-2 and 61000-3-3, FCC part 15 class B.
SAFETY: Conforms with European Union Directive 73/23/EEC EN 61010-1,
UL 3111-1.
ACCESSORIES SUPPLIED: User manual, calibration manual, output connector mat-
ing terminal (part no. CS-846).
ACCESSORIES AVAILABLE: Model 2304-DISP Remote Display/Keypad (4.6 in ×
2.7 in × 1.5 in). Includes 2.7m (9 ft) cable and rack mount kit.
1
PLC = 1.00.
2
Following 15 minute warm-up, the change in output over 8 hours under ambient tem-
perature, constant load, and line operating conditions.
3
Remote sense, at output terminals, 1000% load change; typical.
4
Remote sense, with 4.5m (15 ft) of 16 gauge wire and 1Ω resistance in each lead to simulate
typical test environment, up to 1.5A load change.
5
Minimum current in constant current mode is 6mA.
6
15W typical. 0°–35°C derate 1W/°C up to 50°C.
7
PLC = Power Line Cycle. 1PLC = 16.7ms for 60Hz operation, 20ms for 50Hz operation.
8
Display off.
9
Speed includes measurement and binary data transfer out of GPIB.
10
Max. continuous.
11
60Hz (50Hz).
HW 8/21/01
Rev. A
Specifications are subject to change without notice.
SPEC-2304A