New Advanced Benchtop Optical Power & Energy Meter, Dual Channel
Model: 2940-R
Product Series Overview
1940-R and 2940-R Benchtop Optical Power MetersThe Newport™ 2940-R optical power meter is a high-precision, dual-channel benchtop instrument engineered for fast, accurate, and stable photonics measurements in R&D laboratories and high-volume production environments, including active fiber alignment. Each meter is shipped with a NIST-traceable calibration certificate (ISO/IEC 17025 accredited), a quick-start guide, and a power cord.
Optimized for R&D, Production and Fiber Alignment
Depending on sensor configuration and range, the 1940-R and 2940-R provide up to 200 kHz analog bandwidth, enabling detailed characterization of modulated photodiode signals, pulsed and chopped beams, dynamic waveform behavior, rapid changing optical signals in optical alignment, and more. Real-time acquisition up to 10 kHz allows precise visualization of transient optical changes. A high-speed analog output mirrors the raw sensor signal, enabling oscilloscope or DAQ capture.
NIST-traceable with ISO/IEC 17025 Accreditation
Each 1940-R and 2940-R ships with a comprehensive calibration certificate performed using standards traceable to NIST with ISO/IEC 17025 accreditations. This ensures high confidence in absolute accuracy from day one and supports annual recalibration routines for long-term measurement stability and audit-ready documentation. Newport recommends recalibration every 12 months.
Time-stamped Data Acquisition at up to 10 kHz
High-rate, time-stamped data can be logged to the 2 GB internal memory (stores approximately 40 million measurements) or to external storage via user-supplied USB flash drive. Users can immediately review trends, zoom into events, or export data for offline processing. Time-correlation enables tuning, alignment, and automation workflows with precise traceability.
Compatible with Newport's Wide Range of Sensors
With a standard 15-pin D-Sub sensor connector, the 1940-R and 2940-R Power Meters support Newport's broad range of sensors including:
- Photodiodes: 818-xx/DB, 918D
- Thermopiles: 919P
- Integrating spheres: 819C, 819D,819-xx-1.5
Eight gain ranges spanning seven decades allow precise measurements from femtowatt-level signals up to high-power laser beams, covering telecom, industrial, medical, and scientific wavelengths.
Intuitive Knob-and-Button Interface with 7 inch Display
The knob-and-button interface allows for fast and precise manual adjustment making it ideal for tuning, threshold setting, scaling, and scrolling. The knob provides tactile control for operators who prefer physical inputs and enhances usability when interacting with long menus or graphical zooming. It also allows operators to wear gloves while interfacing the power meter.
Automation Ready USB, Ethernet, RS232 and Trigger I/O
The 1940-R/2940-R power meters offer extensive connectivity for seamless integration into automated test environments, including USB 2.0/3.0, Ethernet (RJ-45), and RS-232 (9 pin D-type). A trigger in enables synchronized measurements. A programmable analog output with selectable full-scale ranges (0–1 V, 0–2 V, 0–5 V, or 0–10 V), 0.003% of full-scale resolution, and 50 Ω output impedance enables precise interfacing with PLCs, alignment stages, and DAQ systems. Together, these interfaces support remote operation, closed-loop alignment, and efficient data logging across automated production environments.
Specifications
- Number of Channels2
- BandwidthUp to 200 kHz, depending on range
- Measurement RatePhotodiode: 10 kHz
Thermopile: 15 Hz - Detector Connector15-Pin D-Sub - Male
- Detector InputUp to 25 mA for photodiode
- Resolution0.0019% of Range Full Scale (10 kHz Power)
0.00001% of Range Full Scale (15 Hz Power) - Accuracy±0.2 % for CW, ±1 % for Peak to Peak, Pulse to Pulse, and Integration Mode
- Frequency Measurement Range1 Hz - 200 kHz
- Gain Ranges8 ranges, 7 decades
- Analog Output ConnectorBNC Socket
- Analog Output0-1 V, 0-2 V, 0-5 V or 0-10 V (raw and digital) full-scale, Resolution 0.003% full-scale output (digital)
- Data Storage2 GB internal memory (can store ~40,000,000 Measurements) External storage defined by user supplied USB Type-A flash drive via front panel (32 GB max)
- Computer InterfacesEthernet -10Base-T/100Base-TX , Auto-MDIX USB 3.0 / 2.0 Type-B RS-232 DB-9 Female
- Display ModeNumeric display, Pulse, Line & Bar Charts, Pass/Fail, Statistics, Analog Needle, Math Channel
- Display Type7 in. Full Color Touch Screen (1024 X 600)
- Display Refresh Rate10 Hz
- Photodiode MeasurementPower, Peak-to-Peak Power, Low Frequency Power, Frequency, Exposure
- Thermopile MeasurementPower, Single Shot Energy, Pulsed Power
- Power Requirements100-240 VAC 50-60 Hz, Max 70 W
- Dimensions280x221x132 mm (DxWxH)
- Weight2.9 kg
- CECompliant
- RoHSCompliant
Resources & Downloads
3D Product Models
2D Product Drawings
2940-R Drawing(304.1 kB, PDF)
Manuals
1940-R and 2940-R User Manual rev 1.00(3.9 MB, PDF) 19xx-29xx Power Meter Communication Commands Reference V01(823 kB, PDF) LM Measurement COM Object Manual Version 15(581.6 kB, PDF)
Tutorials
Technical Notes
Understanding Total Measurement Uncertainty Calculating Power Density a Shortcut(462.4 kB, PDF) Average and Peak Power Calculation(478.8 kB, PDF) Newport User Commands Rev 9(704.1 kB, PDF)
Literature
1940-R & 2940-R Optical Power Meter Datasheet(2.3 MB, PDF)
Software
PMManager Setup Version 4.00(106.8 MB, ZIP) PMManager Version 4.00 Release Notes(155.1 kB, PDF)
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