Compare Model Drawings, CAD & Specs Availability Price
New 1940-R
Advanced Benchtop Optical Power Meter, Single Channel
$4,450
Contact Us
 New 1940-R Advanced Benchtop Optical Power Meter, Single Channel
Contact Us
 $4,450
New 2940-R
Advanced Benchtop Optical Power & Energy Meter, Dual Channel
$5,318
Contact Us
 New 2940-R Advanced Benchtop Optical Power & Energy Meter, Dual Channel
Contact Us
 $5,318

Specifications

  • Bandwidth
    Up to 200 kHz, depending on range
  • Measurement Rate
    10 kHz for photodiode
    15 Hz for thermopile
  • Detector Connector
    15-Pin D-Sub - Male
  • Detector Input
    Up to 25 mA for photodiode
  • Sampling Rate
    50 kHz (10 kHz accessible by user)
  • Resolution
    0.0019% 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 Range
    1 Hz - 200 kHz
  • Gain Ranges
    8 ranges, 7 decades
  • Analog Output Connector
    BNC Socket
  • Analog Output
    0-1 V, 0-2 V, 0-5 V or 0-10 V (raw and digital) full-scale, Resolution 0.003% full-scale output (digital)
  • Data Storage
    2 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 Interfaces
    Ethernet -10Base-T/100Base-TX , Auto-MDIX USB 3.0 / 2.0 Type-B RS-232 DB-9 Female
  • Display Mode
    Numeric display, Pulse, Line & Bar Charts, Pass/Fail, Statistics, Analog Needle, Math Channel (2940-R only)
  • Display Type
    7 in. Full Color Touch Screen (1024 X 600)
  • Display Refresh Rate
    10 Hz
  • Photodiode Measurement
    Power, Peak-to-Peak Power, Low Frequency Power, Frequency, Exposure
  • Thermopile Measurement
    Power, Single Shot Energy, Pulsed Power
  • Power Requirements
    100-240 VAC 50-60 Hz, Max 70 W
  • Dimensions
    280x221x132 mm (DxWxH)
  • Weight
    2.9 kg
  • CE
    Compliant
  • RoHS
    Compliant

Features

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.

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.

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.

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.

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.

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