The Keithley 2750 is a highly flexible 6.5-digit multimeter and data acquisition system within the Integra Series. It features five expansion slots accommodating up to 200 multiplexed channels, built-in signal conditioning, and specialized features such as 1 µΩ resolution and dry circuit ohms measurement capabilities.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE-488.2), RS-232 |
| Display | Vacuum Fluorescent Display (VFD) |
| Calibration Cycle | 1 Year |
| Real-Time Clock | Yes, with battery backup for timestamping |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100V / 120V / 220V / 240V ±10%, 45 Hz to 66 Hz and 360 Hz to 440 Hz, 80 VA max |
| Operating Temperature | 0°C to 50°C |
| Dimensions (W×H×D) | 485 × 89 × 370 |
| Weight | 6.5 |
| Form Factor | 2U, full-rack width |
DC Voltage
| Parameter | Value |
|---|---|
| Measurement Ranges | 100 mV, 1 V, 10 V, 100 V, 1000 V |
| Maximum Resolution | 100 nV |
| Maximum Input Voltage | 1000 V DC |
AC Voltage (True RMS)
| Parameter | Value |
|---|---|
| Frequency Range | 3 Hz to 300 kHz |
DC Current
| Parameter | Value |
|---|---|
| Maximum Input Current | 3 A (front panel) |
Resistance
| Parameter | Value |
|---|---|
| Measurement Configuration | 2-wire / 4-wire |
Temperature
| Parameter | Value |
|---|---|
| Thermocouple Types Supported | J, K, N, T, E, R, S, B |
| Thermistor Types Supported | 2.252 kΩ, 5 kΩ, 10 kΩ |
Frequency and Period
| Parameter | Value |
|---|---|
| Frequency Measurement Range | 3 Hz to 500 kHz |
| Period Measurement Range | 2 µs to 333 ms |
| Input Signal Voltage Range | 100 mV to 750 V AC |
Data Acquisition and Switching (Mainframe)
| Parameter | Value |
|---|---|
| Number of Module Slots | 5 |
| Maximum Multiplexer Channels | 200 differential channels (with 300V isolation) |
| Supported Plug-in Switch/Control Modules | Integra Series 77xx Modules (e.g., 7700, 7702, 7708) |
Math and Memory
| Parameter | Value |
|---|---|
| Reading Memory Capacity (Buffer Size) | 110,000 readings |
| Math Functions | Rel, Min/Max/Average/StdDev, dB, dBm, mX+b, Percent, Limit Test |
Connectivity and Interfaces
| Parameter | Value |
|---|---|
| Command Set (SCPI) | SCPI (Standard Commands for Programmable Instruments) |
Performance
| Parameter | Value |
|---|---|
| Resolution (Digits) | 6.5 |
Measurement Configuration
| Parameter | Value |
|---|---|
| Diode Test Source Current | 1 mA |
| Continuity Threshold Range | 1 Ω to 1000 Ω (user selectable) |
| AC Measurement Method | True RMS, AC-coupled |
Triggering & Control
| Parameter | Value |
|---|---|
| Hardware Triggering | Keithley Trigger Link |
Power
| Parameter | Value |
|---|---|
| Mains Voltage | 100 V / 120 V / 220 V / 240 V ±10% |
| Mains Frequency | 45 Hz to 66 Hz and 360 Hz to 440 Hz (automatically sensed) |
Compliance & Environmental
| Parameter | Value |
|---|---|
| Safety Compliance | EN 61010-1 |
| EMC Compliance | Conforms to European Union EMC Directive |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Trigger Link Connector | 8-pin micro-DIN |
Technology
Digital Multimeter / Data Acquisition (DAQ)
Applications
Data logging, automated test, switch routing, precision measurement