Datasheet

LOW LEVEL MEASURE & SOURCE
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY
(U.S. only)
Model 2182A specifications
Volts Specifications (20% over range)
CONDITIONS: 1PLC with 10 reading digital filter or 5PLC with 2 reading digital filter.
Accuracy: ±(ppm of reading + ppm of range)
(ppm = parts per million) (e.g., 10ppm = 0.001%)
Temperature
Channel 1 Input 24 Hour
1
90 Day 1 Year 2 Year Coefficient
Range Resolution Resistance T
CAL
±1°C T
CAL
±C T
CAL
±C T
CAL
±C 0°–18°C & 28°–50°C
10.000000 mV
2, 3, 4
1 nV >10 GW 20 + 4 40 + 4 50 + 4 60 + 4 (1 + 0.5)/°C
100.00000 mV 10 nV >10 GW 10 + 3 25 + 3 30 + 4 40 + 5 (1 + 0.2)/°C
1.0000000 V 100 nV >10 GW 7 + 2 18 + 2 25 + 2 32 + 3 (1 + 0.1)/°C
10.000000 V 1 µV >10 GW 2 + 1
5
18 + 2 25 + 2 32 + 3 (1 + 0.1)/°C
100.00000 V
4
10 µV 10 MW ±1% 10 + 3 25 + 3 35 + 4 52 + 5 (1 + 0.5)/°C
Channel 2
6, 10
100.00000 mV 10 nV >10 GW 10 + 6 25 + 6 30 + 7 40 + 7 (1 + 1 )/°C
1.0000000 V 100 nV >10 GW 7 + 2 18 + 2 25 + 2 32 + 3 (1 + 0.5)/°C
10.000000 V 1 µV >10 GW 2 + 1
5
18 + 2 25 + 2 32 + 3 (1 + 0.5)/°C
CHANNEL 1/CHANNEL 2 RATIO: For input signals 1% of the range, Ratio Accuracy =
±{[Channel 1 ppm of Reading + Channel 1 ppm of Range * (Channel 1 Range/Channel 1 Input)] + [Channel 2 ppm of Reading + Channel 2 ppm of Range * (Channel 2 Range/Channel 2 Input)]}.
DELTA (hardware-triggered coordination with Series 24XX, Series 26XXA, or Series 622X current sources for low noise R measurement):
Accuracy = accuracy of selected Channel 1 range plus accuracy of I source range.
DELTA MEASUREMENT NOISE WITH 6220 or 6221: Typical 3nVrms /
Hz
(10mV range)
21
. 1Hz achieved with 1PLC, delay = 1ms, RPT filter = 23 (20 if 50Hz).
PULSE-MODE (WITH 6221): Line synchronized voltage measurements within current pulses from 50µs to 12ms, pulse repetition rate up to 12Hz.
PULSE MEASUREMENT NOISE (typical rms noise, R
DUT
<10W): ±(0.009ppm of range*) / meas_time /
pulse_avg_count + 3nV** / (2 · meas_time · pulse_avg_count)
for 10mV range.
* 0.0028ppm for the 100mV range, 0.0016ppm for ranges 1V and above.
** 8nV/
Hz
for ranges above 10mV. meas_time (seconds) = pulsewidth – pulse_meas_delay in 33µs incr.
DC Noise Performance
7
(DC noise expressed in volts peak-to-peak)
Response time = time required for reading to be settled within noise levels from a stepped input, 60Hz operation.
Channel 1
Response Range
Time NPLC, Filter 10 mV 100 mV 1 V 10 V 100 V NMRR
8
CMRR
9
25.0 s 5, 75 6 nV 20 nV 75 nV 750 nV 75 µV 110 dB 140 dB
4.0 s 5, 10 15 nV 50 nV 150 nV 1.5 µV 75 µV 100 dB 140 dB
1.0 s 1, 18 25 nV 175 nV 600 nV 2.5 µV 100 µV 95 dB 140 dB
667 ms 1, 10 or 5, 2 35 nV 250 nV 650 nV 3.3 µV 150 µV 90 dB 140 dB
60 ms 1, Off 70 nV 300 nV 700 nV 6.6 µV 300 µV 60 dB 140 dB
Channel 2
6, 10
25.0 s 5, 75 150 nV 200 nV 750 nV 110 dB 140 dB
4.0 s 5, 10 150 nV 200 nV 1.5 µV 100 dB 140 dB
1.0 s 1, 10 or 5, 2 175 nV 400 nV 2.5 µV 90 dB 140 dB
85 ms 1, Off 425 nV 1 µV 9.5 µV 60 dB 140 dB
VOLTAGE NOISE VS. SOURCE RESISTANCE
11
(DC noise expressed in volts peak-to-peak)
Source Analog Digital
Resistance Noise Filter Filter
0 W 6 nV Off 100
100 W 8 nV Off 100
1 kW 15 nV Off 100
10 kW 35 nV Off 100
100 kW 100 nV On 100
1 MW 350 nV On 100
TEMPERATURE (Thermocouples)
12
ACCURACY
(Displayed in °C, °F, or K. Accuracy based on 90 Day/1 Year
ITS-90, exclusive of thermocouple errors.) 23° ±5°C
Relative to Simulated
TYPE RANGE RESOLUTION Reference Junction
J –200 to +760°C 0.001 °C ±0.2 °C
K –200 to +1372°C 0.001 °C ±0.2 °C
N –200 to +1300°C 0.001 °C ±0.2 °C
T –200 to +400°C 0.001 °C ±0.2 °C
E –200 to +1000°C 0.001 °C ±0.2 °C
R 0 to +1768°C 0.1 °C ±0.2 °C
S 0 to +1768°C 0.1 °C ±0.2 °C
B +350 to +1820°C 0.1 °C ±0.2 °C
2182A
Nanovoltmeter
Operating Characteristics
13, 14
60Hz (50Hz) Operation
Function Digits Readings/s PLCs
DCV Channel 1, 7.5 3 (2) 5
Channel 2, 7.5
17, 19
6 (4) 5
Thermocouple 6.5
18, 19
18 (15) 1
6.5
18, 19, 20
45 (36) 1
5.5
17, 19
80 (72) 0.1
4.5
16, 17, 19
115 (105) 0.01
Channel 1/Channel 2 (Ratio), 7.5 1.5 (1.3) 5
Delta with 24XX, Scan 7.5
17, 19
2.3 (2.1) 5
6.5
18
8.5 (7.5) 1
6.5
18, 20
20 (16) 1
5.5
17
30 (29) 0.1
4.5
17
41 (40) 0.01
Delta with 622X 6.5 47 (40.0)
22
1
System Speeds
13, 15
RANGE CHANGE TIME:
14
<40 ms (<50 ms).
FUNCTION CHANGE TIME:
14
<45 ms (<55 ms).
AUTORANGE TIME:
14
<60 ms (<70 ms).
ASCII READING TO RS-232 (19.2K Baud): 40/s (40/s).
MAX. INTERNAL TRIGGER RATE:
16
120/s (120/s).
MAX. EXTERNAL TRIGGER RATE:
16
120/s (120/s).