Keithley 6514 Instruction Manual page 279

A-2 Specifications
VOLTS
5 1 ⁄ DIGIT
2
RANGE RESOLUTION
2 V 10 µV
20 V 100 µV
200 V 1mV
Note:
1 When properly zeroed, 5
1 ⁄ -digit. Rate: Slow (100ms integration time).
2
NMRR: 60dB on 2V, 20V, >55dB on 200V, at 50Hz or 60Hz ±0.1%.
CMRR: >120dB at DC, 50Hz or 60Hz.
INPUT IMPEDANCE: >200TΩ in parallel with 20pF, < 2pF guarded (10MΩ with zero
check on).
SMALL SIGNAL BANDWIDTH AT PREAMP OUTPUT: Typically 100kHz (–3dB).
AMPS
5 1 ⁄ DIGIT
2
RANGE RESOLUTION
100 aA 2
20 pA
1 fA 2
200 pA
2 nA 10 fA
20 nA 100 fA
200 nA 1 pA
2 µA 10 pA
20 µA 100 pA
200 µA 1 nA
2 mA 10 nA
20 mA 100 nA
Notes:
1 When properly zeroed, 5
⁄ -digit. Rate: Slow (100ms integration time).
1
2
2 aA =10 –18 A, fA=10 –15 A.
INPUT BIAS CURRENT: <3fA at T CAL (user adjustable). Temperature coefficient =
0.5fA/°C .
INPUT BIAS CURRENT NOISE: <750aA p-p (capped input), 0.1Hz to 10Hz band-
width, damping on. Digital filter = 40 readings.
INPUT VOLTAGE BURDEN at T CAL ±1°C (user adjustable):
<20µV on 20pA, 2nA, 20nA, 2µA, 20µA ranges.
<100µV on 200pA, 200nA, 200µA ranges.
<2mV on 2mA range.
<4mV on 20mA range.
TEMPERATURE COEFFICIENT OF INPUT VOLTAGE BURDEN: <10µV/°C on pA, nA,
µA ranges.
PREAMP SETTLING TIME (to 10% of final value): 2.5s typical on pA ranges, damping
off, 3s typical on pA ranges damping on, 15ms on nA ranges, 5ms on µA and mA
ranges.
NMRR: >95dB on pA, 60dB on nA, µA, and mA ranges at 50Hz or 60Hz ±0.1%. Digital
Filter = 40.
ACCURACY TEMPERATURE
(1 Year) 1
COEFFICIENT
18°–28°C 0°–18°C & 28°–50°C
±(%rdg+counts) ±(%rdg+counts)/°C
0.025 + 4 0.003 + 2
0.025 + 3 0.002 + 1
0.06 + 3 0.002 + 1
ACCURACY TEMPERATURE
(1 Year) 1
COEFFICIENT
18°–28°C 0°–18°C & 28°–50°C
±(%rdg+counts) ±(%rdg+counts)/°C
1 + 30 0.1
1 + 5 0.1
0.2 + 30 0.1
0.2 + 5 0.03 + 1
0.2 + 5 0.03 + 1
0.1 + 10 0.005 + 2
0.1 + 5 0.005 + 1
0.1 + 5 0.005 + 1
0.1 + 10 0.008 + 2
0.1 + 5 0.008 + 1
+ 5
+ 1
+ 2