Keithley 6514

OHMS
ACCURACY TEMPERATURE
(1Year)
1
COEFFICIENT TEST
5
1
⁄ 2 -DIGIT 18°–28°C 0°–18°C & 28°–50°C CURRENT
RANGE RESOLUTION ±(% rdg+counts) ±(% rdg+counts)/°C (nominal)
2kΩ 10 mΩ 0.20+ 10 0.01 + 2 0.9 mA
20 kΩ 100 mΩ 0.15+ 3 0.01 + 1 0.9 mA
200 kΩ 1 Ω 0.25+ 3 0.01 + 1 0.9 mA
2MΩ 10 Ω 0.25+ 4 0.02 + 2 0.9 µA
20 MΩ 100 Ω 0.25+ 3 0.02 + 1 0.9 µA
200 MΩ 1kΩ 0.30+ 3 0.02 + 1 0.9 µA
2GΩ 10 kΩ 1.5 + 4 0.04 + 2 0.9 nA
20 GΩ 100 kΩ 1.5 + 3 0.04 + 1 0.9 nA
200 GΩ 1MΩ 1.5 + 3 0.04 + 1 0.9 nA
1
When properly zeroed, 5
1
⁄ 2
digit. Rate: Slow (100ms integration time).
MAXIMUM OPEN CIRCUIT VOLTAGE: 250VDC.
PREAMP SETTLING TIME (To 10% of final reading with <100pF input capacitance):
2kΩ through 200kΩ: 2ms; 20MΩ through 200MΩ: 90ms. 2GΩ through 200GΩ: 1s.
COULOMBS ACCURACY TEMPERATURE
(1 Year)
1,2
COEFFICIENT
6
1
⁄
2 DIGIT 18°–28°C 0°–18°C & 28°–50°C
RANGE RESOLUTION ±(%rdg+counts) ±(%rdg+counts)/°C
20 nC 10 fC 0.4 + 50 0.04 + 10
200 nC 100 fC 0.4 + 50 0.04 + 10
2 µC 1 pC 1 + 50 0.05 + 10
20 µC 10 pC 1 + 50 0.05 + 10
Notes:
1
Charge acquisition time must be <1000s, derate 2% for each additional 10,000s.
2
When properly zeroed, 6
1
⁄
2 digit. Rate: Slow (100ms integration time).
INPUT BIAS CURRENT: <4fA at T
CAL
. Temperature coefficient = 0.5fA/°C.
IEEE-488 BUS IMPLEMENTATION
MULTILINE COMMANDS: DCL, LLO, SDC, GET, GTL, UNT, UNL, SPE, SPD.
IMPLEMENTATION: SCPI (IEEE-488.2, SCPI-1996.0); DDC (IEEE-488.1).
UNILINE COMMANDS: IFC, REN, EOI, SRQ, ATN.
INTERFACE FUNCTIONS: SH1, AH1, T5, TE0, L4, LE0, SR1, RL1, PP0, DC1, DT1, C0, E1.
PROGRAMMABLE PARAMETERS: Function, Range, Zero Check, Zero Correct, EOI
(DDC mode only), Trigger, Terminator (DDC mode only), Data Storage 2500 Storage,
Calibration (SCPI mode only), Display Format, SRQ, REL, Output Format, Guard,
V-offset Cal, I-offset Cal.
ADDRESS MODES: TALK ONLY and ADDRESSABLE.
LANGUAGE EMULATION: 6512, 617, 617HIQ emulation via DDC mode.
TRIGGER TO READING DONE: 150ms typical, with external trigger.
RS-232 IMPLEMENTATION:
Supports: SCPI 1996.0.
Baud Rates: 300, 600, 1200, 2400, 4800, 9600, 19.2k, 38.4k, 57.6k.
Protocols: Xon/Xoff, 7 or 8 bit ASCII, parity-odd/even/none.
Connector: DB-9 TXD/RXD/GND.
Specifications A-3
Section A pg 2-4 5/5/03 1:57 PM Page 2