Atec Keithley-228A - Manual

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
GENERAL
DISPLAY: Dual 3 1 ⁄ 2 -digit LED (0.5 in) displays indicate pro-
grammed values in Standby and output values in
Operate.
FRONT PANEL PROGRAMS: COPY, SINK, IEEE Address,
MOD V, MOD I, TEST, RESET.
READBACK ACCURACY: Same as output accuracy.
STANDBY: Programs output to 0V, 0A without changing
ranges or polarity.
LOAD TRANSIENT RECOVERY TIME: With a resistive load
the output will recover 90% of any load changes within
1ms after end of changes, provided the changes do not
cause transfer to another control mode.
LINE REGULATION: <0.01% output change for AC power
line changes within specified limits.
PROGRAM MEMORY (battery backed-up): Stores up to
100 output settings.
Range of Dwell Times: 10ms to 1000s.
Accuracy of Dwell Times: ±(0.05% + 2ms).
BATTERY BACKUP: Rechargeable 3.6V nickel-cadmium. 1
month retention of data with unit turned off.
TRIGGER: IN and OUT TTL-compatible.
PROGRAMMING RESPONSE TIME: <100ms on fixed
range (typical).
MAXIMUM COMMON MODE VOLTAGE (output or output
common to chassis): 100V DC.
OUTPUT CONNECTIONS: Quick disconnect card with
screw terminals for output, modulation, current moni-
tor, and external sense. BNC (chassis isolated) connec-
tors for TRIGGER IN/OUT.
SELF TEST: Analog and digital circuits tested at power-on.
Power supplies, temperatures, and output continuously
monitored.
WARM-UP: 10 minutes to rated accuracy.
COOLING: Internal fan for forced air cooling.
POWER: 105–125 or 210–250V AC (internally switch select-
able), 50 or 60Hz, 500VA maximum.
ENVIRONMENT: Operating: 0° to 50°C, <80% non-
condensing RH below 35°C. Storage: –25° to 70°C.
DIMENSIONS, WEIGHT: 133mm high × 435mm wide ×
448mm deep (5 1 ⁄ 4 in × 17 1 ⁄ 8 in × 17 5 ⁄ 8 in). Net weight 10.9kg
(24 lb).
ACCESSORIES SUPPLIED: Output Connector, instruction
manual.
ACCESSORIES AVAILABLE:
Model 2288: Fixed Rack Mounting Kit
Model 2289: Slide Rack Mounting Kit
Model 7008-3: IEEE-488 Cable, 0.9m (3 ft)
Model 7008-6: IEEE-488 Cable, 1.8m (6 ft)
AS A CONSTANT CURRENT SOURCE
OUTPUT COMPLIANCE (Source or Sink)
ACCURACY* (1 Year) ACCURACY (1 Year)
RANGE MAXIMUM RESOLUTION 18°–28°C MAXIMUM RESOLUTION 18°–28°C
10 A ±10.10 A 10 mA ±(0.5% + 10 mA) ±10.10 V 10 mV ±(0.1% + 40 mV)
±1.010 V 1 mV ±(0.1% + 4 mV)
1 A ±1.010 A 1 mA ±(0.1% + 1.0 mA) ±101.0 V 100 mV ±(0.1% + 400 mV)
±10.10 V 10 mV ±(0.1% + 40 mV)
±1.010 V 1 mV ±(0.1% + 4 mV)
0.1 A ±0.1010 A 100 µA ±(0.1% + 0.1 mA) ±101.0 V 100 mV ±(0.1% + 400 mV)
±10.10 V 10 mV ±(0.1% + 40 mV)
±1.010 V 1 mV ±(0.1% + 4 mV)
*Above 0.4% of range.
TEMPERATURE COEFFICIENT (0°–18°C & 28°–50°C):
±(0.1 × applicable accuracy specification)/°C.
NOISE:
RANGE 0.1–300 Hz 0.1–300 kHz 0.1–20 MHz*
100 V 2.5 mV p-p 15 mV p-p 25 mV p-p
10 V 1.0 mV p-p 15 mV p-p 25 mV p-p
1 V 0.35 mV p-p 15 mV p-p 25 mV p-p
*Typical.
OUTPUT RESISTANCE (maximum): 100V Range: 10m Ω .
10V Range: 100µ Ω . 1V Range: 100µ Ω .
OUTPUT INDUCTANCE: 100µH typical.
SENSING: REMOTE or LOCAL.
REMOTE SENSING: Corrects for up to 0.5V drop per output
lead. Maximum 5 Ω per sense lead for rated accuracy.
Maximum 0.5 Ω per sense lead for rated output resistance.
NOISE:
RANGE 0.1–300 Hz 0.1–300 kHz 0.1–20 MHz*
10 A 5 mA p-p 15 mA p-p 25 mA p-p
1 A 1.5 mA p-p 5 mA p-p 25 mA p-p
0.1 A 0.5 mA p-p 5 mA p-p 3 mA p-p
*Typical.
AS A CONSTANT VOLTAGE SOURCE
OUTPUT COMPLIANCE (Source or Sink)
ACCURACY* (1 Year) ACCURACY (1 Year)
RANGE MAXIMUM RESOLUTION 18°–28°C MAXIMUM RESOLUTION 18°–28°C
100 V ±101.0 V 100 mV ±(0.1% + 0.1 V) ±1.010 A 1 mA ±(0.1% + 4 mA)
±0.1010 A 100 µA ±(0.1% + 400 µA)
10 V ±10.10 V 10 mV ±(0.1% + 10 mV) ±10.10 A 10 mA ±(0.5% + 40 mA)
±1.010 A 1 mA ±(0.1% + 4 mA)
±0.1010 A 100 µA ±(0.1% + 400 µA)
1 V ±1.010 V 1 mV ±(0.1% + 1.0 mV) ±10.10 A 10 mA ±(0.5% + 40 mA)
±1.010 A 1 mA ±(0.1% + 4 mA)
±0.1010 A 100 µA ±(0.1% + 400 µA)
*Above 0.4% of range.
CURRENT MONITOR OUTPUT
SCALE FACTOR: 1V = 100% of range.
ACCURACY: Same as constant current mode.
BANDWIDTH: 5kHz typical.
OUTPUT RESISTANCE: 10k
Ω .
EXTERNAL MODULATION
INPUT RESISTANCE: 6.8k Ω .
SENSITIVITY: –10V increases magnitude of
programmed output by 100% of full scale;
+10V decreases magnitude of programmed
output by 100% of full scale.
ACCURACY: 2% typical, DC to 60Hz.
MAXIMUM MODULATION: Modulation and
programmed setting should not cause oper-
ation exceeding the range of 0 to 100% of full
scale.
MODULATION FREQUENCY: 600Hz band-
width.
IEEE-488 BUS
IMPLEMENTATION
(IEEE-488-1978)
MULTILINE COMMANDS: DCL, LLO, SDC,
GET, GTL, UNT, UNL, SPE, SPD.
UNILINE COMMANDS: IFC, REN, EOI,
SRQ, ATN.
INTERFACE FUNCTIONS: SH1, AH1, T6,
TE0, L4, LE0, SR1, RL1, PP0, DC1, DT1,
C0, E1.
PROGRAMMABLE PARAMETERS: Output
(Operate or Standby), Range, Voltage,
Current, Trigger Mode, Sink, Modulation
(Voltage or Current), Display Mode,
Output Prefix (data format on readback),
SRQ Mask, EOI, Terminator Characters,
Status, Self Test, Memory Location (100
point memory), Dwell Time.
228A Programmable Voltage/Current Source
TEMPERATURE COEFFICIENT (0°–18°C & 28°–50°C):
±(0.1 × applicable accuracy specification)/°C.
OUTPUT RESISTANCE (min.): 10A Range: 10 4 Ω .
1A Range: 10 5 Ω . 0.1A Range: 10 6 Ω .
OUTPUT CAPACITANCE: 0.2µF typical.
OUTPUT LOAD: Must be non-inductive.
SBG 12/19/00
Rev. A
SPEC-228A