T-Rad-Analog

P/N 202306

Analog (BNC) power module, to interface THZ-B heads with oscilloscopes and lock-in amplifiers.

Key features

Analog interface for THZ-B series

Analog (BNC) power module, to interface THZ-B heads with oscilloscopes and lock-in amplifiers.

Detector compatibility

  • Terahertz

    Average power (compatible with THZ-B series only)

Related products

Controller and GUI specifications

  • Digital display size

    Computer Screen
  • Analog output

    BNC
  • External trigger

    None
  • Battery type

    9 V
  • External power supply

    9 VDC 1.66 A

Power meter specifications

Energy meter specifications

Physical characteristics

  • Dimensions

    101.6W x 30.5H x 127D mm
  • Weight

    0.424 kg

T-RAD

The T-RAD is a microprocessor-based digital radiometer that includes a 12-bit ADC and unique DSP lock-in software. It is powered by a USB connection, which also acts as a virtual COM port. When a THZ-B terahertz pyroelectric detector is plugged into the T-RAD module, the module reads the content of the head's EEPROM, which identifies the detector and provides calibration and wavelength correction data. The LabView software supplied with the device makes it very easy to set up the radiometer, measure a THz or broadband source and record data. The software is compatible with Windows 7,8 & 10.

THZ-B-DA DETECTOR AND OSCILLOSCOPE

Here is a basic analog set up that would be useful if the optical power of the source was about 5 µW or greater. The output of the THZ5B-BL-DA detector would be approximately 600 mV @ 5 Hz chopping frequency, giving plenty of signal for an oscilloscope. Simply read the voltage output and divide by the Rv factor (V/W) of the detector to measure the intensity of the source in Watts. Also consider applying a wavelength correction factor under certain circumstances.

THZ-B-DA DETECTOR AND LOCK-IN AMPLIFIER

This is another analog set-up option that we recommend if you have to measure very low power levels (i.e. less than 5 µW) where the signal may be buried in the broadband noise. The voltage output of the analog THZ-B-DA detector, powered by our T-RAD-ANALOG, is routed to the Lock-In Amplifier input, and the Sync Output of our SDC-500 Chopper is connected to the reference input. The Lock-In Amplifier will lock on the chopping frequency and you can dial in a long integrating time and measure a very low RMS voltage. The voltage divided by our Voltage Responsivity (V/W) equals the power of the source.

THZ-B-DZ DETECTOR AND T-Rad MODULE

Although analog solutions are available, for simplicity, convenience and sensitivity, we recommend you choose our THZ-B-DZ detectors and the T-RAD digital radiometer. Our unique DSP Lock-In Amplifier software provides a function much like the Analog Lock-In, but is so much easier to use. It also addresses thermal drift of the sensor and allows you to display the power measurement and complete statistics directly in digital and graphic formats. Set the range, null the background, set the filter tau (bandwidth) and make the measurement. It's that easy!

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