Datasheet

SWITCHING AND CONTROL
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY
(U.S. only)
DC NOTES (continued)
9. Includes Analog Backplane 15-pin rear panel connector. For 3721, refer to DC Current table for additional
uncertainties.
10. For L
SYNC
On, line frequency ±0.1%.
nPLC 5 1 <0.2 <0.01
L
SYNC
On
NMRR 110 dB 90 dB 45 dB
L
SYNC
Off
NMRR 60 dB, ±2 dB 60 dB, ±2 dB
11. For 1k
W
unbalance in LO lead. AC CMRR is 70dB.
nPLC 5 1 0.2
12
0.2
CMRR
140 dB 140 dB 120 dB 80 dB
12. For L
SYNC
On.
13. Reading rates are for 60Hz (50Hz) operation using factory defaults operating conditions dmm.reset(“all”),
Autorange off, dmm.autodelay=dmm.OFF, dmm.opendetector=dmm.OFF, format.data.=format.SREAL.
Ranges as follows: DCV = 10V, 2W
W
/4W
W
= 1k
W
, DCI = 1mA, Dry-Ckt
W
= 10
W
, ACI = 1mA, and ACV = 1V.
For Dry-Ckt W with Offset Comp OFF 2kW, 60 rdg/s max. Dry-Ckt W with Offset Comp ON 2kW, 29.5 rdg/s
max. For temperature reading rates use DCV for T/C and 2W
W
for Thermistor. Speeds are typical and include
measurements and data transfer out the Ethernet, GPIB, or USB.
14. DMM configured for single reading, dmm.measurecount=1, and print(dmm.measure()). May require additional
settling delays for full accuracy, depending on measurement configuration.
15. DMM configured for multisample readings and single buffer transfer, dmm.measurecount=1000,
buf=dmm.makebuffer(1000), dmm.measure(buf), and printbuffer(1,1000,buf).
16. dmm.autozero=dmm.ON. RMS noise using low thermal short for DCV, 2W
W
, 4W
W
, and Dry-Ckt
W
. For DCI,
dmm.connect=dmm.CONNECT_NONE or 0. For RTD, noise using low thermal 190
W
precision resistor.
Includes Model 3721 card accuracies. RMS noise values are typical.
17. For DCV or 2W
W
to Frequency or Period, dmm.nplc=0.2 and dmm.aperture=0.01 sec. For ACI or ACV,
dmm.detectorbandwidth=300. For ACI or ACV with dmm.autodelay=dmm.ON, best speed is 65ms.
18. Speeds are within same multiplexer bank. Add an additional 8ms when changing banks or slots.
19. When properly zeroed using REL function.
AC Specifications
Calibration
Cycle
Accuracy: ±(% of reading + % of range) 23°C ± 5°C
Function Range
1
Resolution 3 Hz–5 Hz 5 Hz–10 Hz 10 Hz –20 kHz 20 kHz–50 kHz 50 kHz–100 kHz 100 kHz–300 kHz
Voltage
2
100.0000 mV 0.1 µV
90 Day
(100mV–100V)
1.0 + 0.03 0.30 + 0.03 0.05 + 0.03 0.11 + 0.05 0.6 + 0.08 4.0 + 0.5
1.000000 V 1 µV
10.00000 V 10 µV
1 Year
(100mV–100V)
1.0 + 0.03 0.30 + 0.03 0.06 + 0.03 0.12 + 0.05 0.6 + 0.08 4.0 + 0.5
100.0000 V 100 µV
300.0000 V 1 mV
90 Day
1.0 + 0.05 0.30 + 0.05 0.05 + 0.05 0.11 + 0.08 0.6 + 0.11 4.0 + 0.8
300.0000 V 1 mV
1 Year
1.0 + 0.05 0.30 + 0.05 0.06 + 0.05 0.12 + 0.08 0.6 + 0.11 4.0 + 0.8
Temp. Coeff. /°C
3
(all ranges)
0.010 + 0.003 0.030 + 0.003 0.005 + 0.003 0.006 + 0.005 0.01 + 0.006 0.03 + 0.01
Current
2
3 Hz–5 Hz 5 Hz–10 Hz 10Hz –2 kHz 2 kHz –5 kHz 5 kHz –10 kHz
1.000000 mA
7
1 nA
90 Day/1 Year
1.0 + 0.04 0.30 + 0.04 0.08 + 0.03 0.09 + 0.03 0.09 + 0.03
10.00000 mA 10 nA 1.0 + 0.04 0.30 + 0.04 0.08 + 0.03 0.09 + 0.03 0.09 + 0.03
100.0000 mA 100 nA 1.0 + 0.04 0.30 + 0.04 0.08 + 0.03 0.09 + 0.03 0.09 + 0.03
1.000000 A 1 µA 1.0 + 0.04 0.30 + 0.04 0.20 + 0.04 0. 88 + 0.04 2.0 + 0.04
3.000000 A 10 µA 1.0 + 0.05 0.30 + 0.05 0.20 + 0.05 0. 88 + 0.05 2.0 + 0.05
Temp. Coeff. /°C
3
(all ranges)
0.10 + 0.004 0.030 + 0.004 0.005 + 0.003 0.006 + 0.005 0.006 + 0.005
Frequency
4
and Period
Accuracy: ±(ppm of reading + offset ppm)
3 Hz–500 kHz 3 Hz–500 kHz 333 ms–2 µs
100.0000 mV
to
300.0000 V
0.333 ppm
90 Day/1 Year
(all ranges)
80 + 0.333 80 + 0.333 (0.25 s gate)
3.33 ppm 80 + 3.33 80 + 3.33 (100 ms gate)
33.3 ppm 80 + 33.3 80 + 33.3 (10 ms gate)
ADDITIONAL UNCERTAINTY ±(% of reading)
Low Frequency
Uncertainty
Detector Bandwidth
3 (3 Hz–300 kHz) 30 (30 Hz–300 kHz) 300 (300 Hz–300 kHz)
20 Hz–30 Hz
0 0.3
30 Hz–50 Hz
0 0
50 Hz–100 Hz
0 0 4.0
100 Hz–200 Hz
0 0 0.72
200 Hz–300 Hz
0 0 0.18
300 Hz–500 Hz
0 0 0.07
>500 Hz
0 0 0
Series 3700A
System Switch/Multimeter
and Plug-In Cards
Additional
Uncertainty
±(% of reading)
D
etector
Bandwidth
Crest Factor
5
Maximum Crest
Factor: 5 at full-scale
1–2 2–3 3–4 4–5
5 Hz–10 Hz
3 0.50 1.20 1.30 1.40
10 Hz–30 Hz
3 0.20 0.30 0.60 0.90
30 Hz–100 Hz
3 or 30 0.20 0.30 0.60 0.90
>100 Hz
3 or 30 0.05 0.15 0.30 0.40
300 Hz–500 Hz
300 only 0.50 1.20 1.30 1.40
500 Hz
300 only 0.05 0.15 0.30 0.40
Series 3700A specifications
Series 3700A specifications