Specifications subject to change without notice.
Model 2701 Condensed Specifications
*
*Call or visit www.keithley.com for detailed specifications.
ACCURACY, CONVENIENCE, AND TRACEABILITY
DC VOLTAGE
1000V protection all ranges; A/D Linearity of 2ppm rdg + 1ppm rng; 1200000 max counts
Reso- Accuracy (90 day Accuracy (1 year Input
Range lution rdg + rng) rdg + rng) Resistance
100.0000mV 100nV 0.0025% + 0.0035% 0.0030% + 0.0035% 10MΩ or >10GΩ
1.000000V 1.0µV 0.0025% + 0.0007% 0.0030% + 0.0007% 10MΩ or >10GΩ
10.00000V 10µV 0.0020% + 0.0005% 0.0030% + 0.0005% 10MΩ or >10GΩ
100.0000V 100µV 0.0035% + 0.0009% 0.0045% + 0.0009% 10MΩ
1000.000V 1.0mV 0.0035% + 0.0009% 0.0050% + 0.0009% 10MΩ
THERMOCOUPLE
Conversion to ITS-90; Automatic, External, or Simulated CJC; Open T/C check.
Accuracy (1 year) Accuracy (1 year)
Type Range Simulated CJC Using plug-in module
J-200 to +760°C ±0.2°C ±1.0°C
K-200 to +1372°C ±0.2°C ±1.0°C
N-200 to +1300°C ±0.2°C ±1.0°C
T-200 to +400°C ±0.2°C ±1.0°C
E-200 to +1000°C ±0.2°C ±1.0°C
R0 to +1768°C ±0.6°C ±1.8°C
S0 to +1768°C ±0.6°C ±1.8°C
B +350 to +1820°C ±0.6°C ±1.8°C
RESISTANCE
2- or 4-wire; Offset Compensation selectable; 1000V / 350V protection on source / sense
inputs
Reso- Accuracy Accuracy Test
Range lution (90 day rdg + rng) (1 year rdg + rng) Current
100.0000Ω 100µΩ 0.0080% + 0.0020% 0.0100% + 0.0020% 1mA
1.000000kΩ 1.0mΩ 0.0080% + 0.0006% 0.0100% + 0.0006% 1mA
10.00000kΩ 10mΩ 0.0080% + 0.0006% 0.0100% + 0.0006% 100µA
100.0000kΩ 100mΩ 0.0080% + 0.0010% 0.0100% + 0.0010% 10µA
1.000000MΩ 1.0Ω 0.0080% + 0.0010% 0.0100% + 0.0010% 10µA
10.00000MΩ 10Ω 0.0200% + 0.0010% 0.0400% + 0.0010% 0.7µA
100.0000MΩ 100Ω 0.2000% + 0.0030% 0.2000% + 0.0030% 0.7µA
RTD
100Ω platinum [PT100], D100, F100, PT385, PT3916, or user type; plus probe error
Range Resolution Accuracy (1 year)
-200 to +630°C 0.010°C ±0.06°C
THERMISTOR
2.2kΩ, 5kΩ, and 10kΩ; plus sensor error
Range Resolution Accuracy (1 year)
-80 to +150°C 0.010°C ±0.08°C
DC CURRENT
250V, 3A fused inputs; Built-in shunt resistors
Reso- Accuracy Accuracy Burden
Range lution (90 day rdg + rng) (1 year rdg + rng) Voltage
20.00000mA 10nA 0.03% + 0.008% 0.05% + 0.008% <0.2V
100.0000mA 100nA 0.03% + 0.080% 0.05% + 0.080% <0.1V
1.000000A 1µA 0.05% + 0.008% 0.06% + 0.008% <0.5V
3.000000A 10µA 0.11% + 0.008% 0.12% + 0.008% <1.5V
AC VOLTAGE
Tr ue RMS; 5:1 max Crest Factor
Range Resolution Frequency Range Accuracy (1 year rdg + rng)
100mV to 750V 0.1µV to 1mV 3Hz – 10Hz 0.35% + 0.03%
10Hz – 20kHz 0.06% + 0.03%
20kHz – 50kHz 0.12% + 0.05%
50kHz – 100kHz 0.6% + 0.08%
100kHz – 300kHz 4.0% + 0.5%
FREQUENCY and PERIOD
Selectable Gate Times of 10msec, 100msec, 1sec
Frequency Period Accuracy
Range Range Range (1 year rdg + rng)
100mV to 750V 3Hz to 500kHz 333msec to 2µsec 0.01% + 0.333ppm (1.0 sec)
0.01% + 3.33ppm (0.1 sec)
0.01% + 33.3ppm (0.01 sec)
AC CURRENT
Tr ue RMS; 5:1 Crest Factor
Range Resolution Frequency Range Accuracy (1 year rdg + rng)
1A 1µA 10Hz – 5kHz 0.3% + 0.04%
3A 10µA 10Hz – 5kHz 0.16% + 0.06%
DC SINGLE CHANNEL READING RATES
Function Digits Readings/sec NPLC
DCV, DCI, 6.5 5 10
2W Ohms, 6.5 50 1
Thermocouple, 5.5 500 0.1
Thermistor 4.5 3000 0.01
3.5 3500 0.002
4W Ocomp, RTD 6.5 1 10
6.5 8 1
5.5 18 0.1
MULTICHANNEL RATE, INTO AND OUT OF MEMORY TO ETHERNET
Channels/s
7710 scanning DCV, temperature (T/C) with limits and timestamp on 500/s
7702 scanning DCV 75/s
7700 and 7708 scanning temperature (T/C) 80/s
DC READING SPEED VS. NOISE REJECTION
RMS Noise
NPLC Digits Filter NMRR CMRR (10V range)
10 6.5 50 110dB 140dB <2µV
1 6.5 Off 90dB 140dB <6µV
0.1 5.5 Off – 80dB <40µV
0.01 4.5 Off – 80dB <300µV
0.002 3.5 Off – 60dB <1mV
SYSTEM FEATURES
Expansion slots 2
Scanning Channels Up to 80 differential
Tr igger Source External digital input, front panel keypad, channel monitor,
interval timer, Ethernet/RS-232, Trigger Link, immediate
Scan Count 1 to 450,000 or continuous
Scan Interval 0 to 99 hours; 1msec step size
Channel Delay 0 to 9999999sec per channel; 1msec step size
Configuration Per channel for measurement setups, math, and limits
Power Fail Recovery Resume scanning sequence; configuration and stored data
are preserved
Power up Memory 4 user configurations with labels
Real Time Clock Included; use to timestamp readings
Data Storage Non-volatile 450,000 reading buffer with timestamp;
continuous fill; query while filling; min/max/avg/std dev
Alarm Limits 2 HI and 2 LO limits per channel; selectable polarity
Digital Inputs 2 TTL level – external trigger plus interlock
Digital Outputs 4 TTL level – selectable polarity; HI/LO limit configurable
Master Alarm 1 TTL level output toggles when any HI/LO limit is exceeded
Front Panel Lock Software enabled
Communication Ethernet TCP/IP (10/100 BaseTX autosense), RS-232,
RJ-45 3-meter crossover cable included
IP Configuration Static or DHCP
Password protection Up to 11 characters
Per-channel Math mX+b, %
Multi-channel Math Ratio, Average
Resolution 6
1
⁄2-digit with 20% overrange; 28-bit readings
available over Ethernet or RS-232
Software Built-in web page in HTML and VBscript requires Microsoft IE
5.0 or higher
TestPoint-based start-up applications;
LabVIEW, TestPoint, LabWindows/CVI, Visual Basic,
C/C++ driver. Requires Pentium 233 MHz or higher, Win 98,
NT or higher
GENERAL INFORMATION
Power Supply 100V / 120V / 220V / 240V / ±10%
Line Frequency 45Hz to 66Hz; 360Hz to 400Hz
Operating Environment 0°C to 50°C
Size 89mm H
x
213mm W x370mm D
War ranty
3 years on mainframe, 1 year on 77xx Expansion
Measurement &
Control Modules
Safety EN61010-1 CAT I
EMC EN 61326-1