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
SPECIFICATIONS
SPEC-2701
A 27457 Released SK 8/1602
B 27576 Revised SZ 4/15/03
C 28238 Revised SZ 9/5/03
HW 8/16/02
SZ 10/25/02
HW 9/5/03
Revision C
Page 2 of 4
2701 Ethernet Multimeter/Data Acquisition System
DC SPEED vs. NOISE REJECTION
Rate Filter Readings/s
12
Digits
RMS Noise
10V Range NMRR CMRR
14
10 50 0.1 (0.08) 6.5 <2.5 µV 110 dB
13
140 dB
1 Off 15 (12) 6.5 <6 µV 90 dB
13
140 dB
0.1 Off 500 (400) 5.5 <40 µV - 80 dB
0.006 Off 3000 (3000) 4.5 <300 µV - 80 dB
0.002 Off 3500 (3500) 3.5 <1 mV - 60 dB
DC MEASUREMENT CHARACTERISTICS
DC Volts
A-D LINEARITY: 2.0 ppm of reading + 1.0 ppm of range.
INPUT IMPEDANCE:
100mV-10V Ranges: Selectable >10GΩ// with <400pF or 10MΩ ±1%.
100V, 1000V Ranges: 10MΩ ±1%.
EARTH ISOLATION: 500V peak, >10GΩ and <300pF any terminal to
chassis.
INPUT BIAS CURRENT: <75pA at 23°C.
COMMON MODE CURRENT: <500nApp at 50Hz or 60Hz.
AUTOZERO ERROR: Add ±(2ppm of range error +5
µV) for <10
minutes and
±1°C.
INPUT PROTECTION: 1000V, all ranges, 300V with plug-in modules.
Resistance
MAX 4WΩ LEAD RESISTANCE: 10% of range per lead for 100Ω and
1kΩ ranges; 1kΩ per lead for all other ranges.
OFFSET COMPENSATION: Selectable on 4WΩ 100Ω, 1kΩ, and 10kΩ
ranges.
CONTINUITY THRESHOLD: Adjustable 1 to 1000Ω.
INPUT PROTECTION: 1000V, all Source Inputs, 350V Sense Inputs,
300V with plug-in modules.
DC Current
SHUNT RESISTORS: 100mA-3A, 0.1Ω. 20mA, 5Ω.
INPUT PROTECTION: 3A, 250V fuse.
Thermocouples
CONVERSION: ITS-90.
REFERENCE JUNCTION: Internal, External, or Simulated (Fixed).
OPEN CIRCUIT CHECK: Selectable per channel. Open >11.4k ±200Ω.
DC Notes
1. 20% overrange except on 1000V and 3A.
2. Add the following to “ppm of range” uncertainty; 100mV 15ppm, 1V and 100V 2ppm, 100Ω
30ppm, 1k→<1MΩ 2ppm, 10mA and 1A 10ppm, 100mA 40ppm.
3. ±2% (measured with 10MΩ input resistance DMM, >10GΩ DMM on 10MΩ and 100MΩ
ranges).
4. Relative to calibration accuracy.
5. For signal levels >500V, add 0.02ppm/V uncertainty for portion exceeding 500V.
6. Specifications are for 4-wire Ω, 100Ω with offset compensation on, 77xx plug-in module with
LSYNC and offset compensation on. With offset compensation on OPEN CKT. VOLTAGE is
12.8V. For 2-wire Ω add 1.0Ω to “ppm of range” uncertainty.
7. Must have 10% matching of lead resistance in Input HI and LO.
8. Add the following to “ppm of reading” uncertainty when using plug in modules:
10 kΩ 100 kΩ 1 MΩ 10 MΩ 100 MΩ
All Modules:
220 ppm 2200 ppm
7701, 7703, 7707, and 7709 Modules:
10 ppm 100 ppm 1000 ppm 1% 10%
7706, 7708 Modules:
5 ppm 50 ppm 500 ppm 5000 ppm 5%
7710 Model 23°C ±5°C:
11 ppm 110 ppm 1100 ppm 1.1% 11%
7710 Model Temp Coeff. >28°C→50°C
0.3 ppm/°C 3 ppm/°C 30 ppm/°C 0.03%/°C 0.3%/°C
9. Add 1.0V when used with plug-in modules.
10. For RATIO, DCV only. For AVERAGE, DCV and Thermocouples only. Available with plug-
in modules only.
11. Add 6µV to “of range” uncertainty when using Models 7701, 7703, and 7707, 3µV for Models
7706, 7709, and 7710.
12. Auto zero off.
13. For LSYNC On, line frequency ±0.1%. For LSYNC Off, use 60dB for ≥ 1PLC.
14. For 1kΩ unbalance in LO lead.
15. Speeds are for 60Hz (50Hz) operation using factory defaults operating conditions (*RST).
Autorange off, Display off, Limits off, Trigger delay = 0.
16. Speeds include measurements and data transfer out the ethernet (reading elements only).
(100BaseT Ethernet, 3 meter RJ-45 crossover cable, PIII-800, Windows version 98 SE, VB
version 6.0, direct Winsocket interface).
17. Sample count = 1000 (into memory buffer), auto zero off.
18. Auto zero off, NPLC = 0.002.
19. Additional Uncertainty
Type Range 7710 Module Using CJC
J 0 to +760°C 1.5°C
K 0 to +1372°C
—
N 0 to +1300°C 0.5°C
T 0 to +400°C 0.5°C
E 0 to +1000°C 0.5°C
R +400 to +1768°C 0.9°C
S +400 to +1768°C 0.9°C
B +1100 to +1820°C 0.9°C
Plug-In Modules
Type Range
Front Terminals
Sim. Ref.
Junction
7709 Sim.
Ref.
Junction
7701, 7703,
7707 Sim.
Ref. Junction
7700 and
7708 Using
CJC
7706
Using
CJC
7710
Using
CJC
J -200 to 0°C 0.1 0.1 0.3 0.8 1.6 4.5
K -200 to 0°C 0.2 0.2 0.4 0.8 1.6 1
N -200 to 0°C 0.3 0.3 0.6 0.8 1.6 2.5
T -200 to 0°C 0.2 0.1 0.4 0.8 1.6 2.5
E -200 to 0°C - 0.1 0.3 0.8 1.6 2.5
R 0 to +400°C 0.4 0.6 1.2 0.5 1.0 2.2
S 0 to +400°C 0.4 0.6 1.2 0.5 1.0 2.2
B +350 to +1100°C 0.8 0.3 1.7 0.5 1.0 2.2
20. For lead resistance >0Ω, add the following uncertainty/Ω for measurement temperatures of:
70°–100°C 100°–150°C
2.2 kΩ
(44004) 0.22°C 1.11°C
5.0 kΩ
(44007) 0.10°C 0.46°C
10 kΩ
(44006) 0.04°C 0.19°C
21. Front Panel resolution is limited to 0.1Ω.
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