The Keithley 2701 is a high-performance 6.5-digit multimeter, data acquisition, and datalogging system featuring two plug-in module slots and integrated Ethernet connectivity. As part of the Keithley Integra Series, the Model 2701 combines the precision of a high-resolution digital multimeter with flexible, multi-channel switching capabilities. Its high-speed 10/100Base-T Ethernet interface and expanded 450,000-reading memory make it ideal for distributed measurement applications, high-throughput production testing, and remote environmental monitoring.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Ethernet (10Base-T), RS-232 |
| Display | 12-character alphanumeric Vacuum Fluorescent Display (VFD) |
| Real-Time Clock | Battery-backed |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 V / 120 V / 220 V / 240 V ±10%, 45 Hz to 66 Hz and 360 Hz to 440 Hz (automatically sensed), 28 VA |
| Operating Temperature | 0°C to 50°C |
| Dimensions (W×H×D) | 213 mm × 89 mm × 370 mm |
| Weight | 3.7 kg |
System Architecture & Capacity
| Parameter | Value |
|---|---|
| Number of Module Slots | 2 |
| Maximum Channel Capacity | 80 differential input channels (using two 40-channel multiplexer modules) |
| Internal DMM Resolution | 6.5 digits (22-bit A/D converter) |
| Internal Memory Capacity | 450,000 readings (volatile) |
Built-In DMM Specifications
| Parameter | Value |
|---|---|
| DC Voltage Ranges | 100 mV, 1 V, 10 V, 100 V, 1000 V |
| DC Voltage Best 1-Year Accuracy | ±(0.003% of reading + 0.0005% of range) |
| AC Voltage Ranges | 100 mV, 1 V, 10 V, 100 V, 750 V |
| AC Voltage Frequency Range | 3 Hz to 300 kHz |
| AC Voltage Best 1-Year Accuracy | ±(0.06% of reading + 0.03% of range) |
| Resistance Measurement Ranges | 100 Ω, 1 kΩ, 10 kΩ, 100 kΩ, 1 MΩ, 10 MΩ, 100 MΩ |
| Resistance Measurement Modes | 2-wire and 4-wire (with offset compensation) |
| Resistance Best 1-Year Accuracy | ±(0.01% of reading + 0.001% of range) |
| DC Current Ranges | 20 mA, 100 mA, 1 A, 3 A |
| DC Current Best 1-Year Accuracy | ±(0.05% of reading + 0.005% of range) |
| AC Current Ranges | 1 A, 3 A |
| AC Current Best 1-Year Accuracy | ±(0.1% of reading + 0.04% of range) |
| Frequency and Period Measurement Range | 3 Hz to 500 kHz |
| Temperature Sensor Types Supported | Thermocouples (J, K, T, E, R, S, B, N), RTDs (Pt100, D100, F100, user-defined), Thermistors (2.2kΩ, 5kΩ, 10kΩ) |
| DCV Input Impedance | >10 GΩ (on 100 mV, 1 V, 10 V ranges); 10 MΩ ± 1% (on 100 V, 1000 V ranges) |
| Common Mode Rejection Ratio (CMRR) | 140 dB (DC), 120 dB (at 50/60 Hz with 1 kΩ unbalance) |
| Normal Mode Rejection Ratio (NMRR) | 60 dB (at 50/60 Hz) |
Scanning, Triggering & Alarms
| Parameter | Value |
|---|---|
| Maximum Scan Rate | 3500 channels/second (to internal memory via high-speed solid-state multiplexer) |
| Scan Triggering Sources | External, RS-232, Ethernet, Timer, Manual, Immediate |
| Alarms per Channel | 2 (HI/LO limits per channel with alarm output routing) |
Connectivity & System Interfaces
| Parameter | Value |
|---|---|
| Command Language Standard | SCPI (Standard Commands for Programmable Instruments) |
| Ethernet Port Speed | 10Base-T (RJ-45 connector) |
Environmental & Safety Standards
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40°C to 70°C |
| Relative Humidity Limits | Up to 80% RH at 35°C, non-condensing |
| Maximum Operating Altitude | 2000 meters (6562 feet) above sea level |
| Warm-up Time | 2 hours to rated specifications |
Physical Specifications
| Parameter | Value |
|---|---|
| Form Factor | Half-rack, 2U height |
DC Voltage
| Parameter | Value |
|---|---|
| Input Bias Current | <75 pA at 25 °C |
AC Voltage
| Parameter | Value |
|---|---|
| ACV Input Impedance | 1 MΩ ± 2% shunted by <100 pF |
| Maximum Crest Factor | 5:1 at full scale |
Interfaces & I/O
| Parameter | Value |
|---|---|
| Digital I/O | 4 outputs, 1 input (TTL compatible) |
Measurement Performance
| Parameter | Value |
|---|---|
| A/D Converter Integration Time | 0.01 PLC to 50 PLC (50 Hz) / 60 PLC (60 Hz) |
Safety & Isolation
| Parameter | Value |
|---|---|
| Maximum Input Voltage (HI to LO) | 1000 V peak |
| Common Mode Voltage Limit | 350 V peak (LO to earth ground) |
Expansion Modules
| Parameter | Value |
|---|---|
| Supported Plug-in Modules | Keithley 7700 series (7700, 7701, 7702, 7703, 7705, 7706, 7707, 7708, 7709, 7710, 7711, 7712) |
Power Requirements
| Parameter | Value |
|---|---|
| AC Line Frequency | 45 Hz to 66 Hz and 360 Hz to 440 Hz (automatically sensed) |
Triggering
| Parameter | Value |
|---|---|
| Trigger Delay Range | 0 to 99999.999 s |
| Trigger Link Connector | 8-pin micro-DIN |
| External Trigger Input | TTL compatible, 2 µs minimum pulse width |
| Trigger Output | TTL compatible, 2 µs minimum pulse width |
Connectivity
| Parameter | Value |
|---|---|
| RS-232 Baud Rate | 300 bps to 115.2 kbps |
| Ethernet Protocols | TCP/IP, UDP, ICMP, DHCP |
Measurement Functions
| Parameter | Value |
|---|---|
| Math Functions | mX+b, Percent, Reciprocal |
| Diode Test Current | 1 mA |
| Continuity Threshold Range | 1 Ω to 1000 Ω |
Technology
Data Acquisition / Digital Multimeter
Applications
Automated production testing, multi-channel environmental monitoring, distributed data acquisition, and precision component testing.
Looking for the Keithley 2701?
Tell us what you need. We're building a network of equipment dealers and will get back to you if we can help source it — no obligation.
Selling this kind of equipment? Sell with us