Chat Live
Contact Us
sales@valuetronics.com
The Advantest TQ8325 Digital Optical Wavelength Meter is a Michelson-interferometer-based instrument designed for high-precision measurement of laser and LED wavelengths and optical frequencies. It uses a stabilized helium-neon reference laser (0.6329914 μm in vacuum) and counts interference fringes against the input signal as a moving mirror sweeps the optical path, deriving the wavelength of the input light by ratiometric comparison. The instrument compensates for the wavelength-dependent refractive index of air to report wavelength values referenced to vacuum or air as appropriate for the application.
The TQ8325 is used for characterizing laser diode and LED emission wavelength in fiber-optic component manufacturing, verifying optical source wavelength in telecom and datacom development labs, measuring wavelength drift in tunable laser sources, and providing reference wavelength readings for tuning of WDM and DWDM light sources. The deviation measurement mode supports stability and aging studies on laser sources by displaying the difference between a stored reference reading and the current measurement.
ValueTronics has been sourcing and supporting fiber-optic test instruments since 1992 from our 20,000 sq ft secure warehouse at 1675 Cambridge Drive, Elgin, Illinois. Optical wavelength meters like the TQ8325 are inspected, function-verified, and made ready for shipment by our in-house team before leaving the facility, so the unit you receive matches the condition stated in your quote.
Advantest Corporation, headquartered in Tokyo, Japan, has manufactured precision test and measurement instruments since 1954 (originally as Takeda Riken Industry Co., Ltd., adopting the Advantest name in 1985). The company continues to operate independently as a publicly traded Japanese measurement instrument manufacturer.
| Specification | Value |
|---|---|
| Optical Specifications | |
| Measurement Wavelength Range | 0.48 µm to 1.0 µm (short wavelength band); 1.0 µm to 1.65 µm (long wavelength band) |
| Measurement Frequency Range | 300 THz to 625 THz (short wavelength band); 181 THz to 300 THz (long wavelength band) |
| Measurement Input Level | -15 dBm to +3 dBm (0.48 µm to 0.6 µm); -23 dBm to +3 dBm (0.6 µm to 1.65 µm); -27 dBm to +3 dBm (1.2 µm to 1.6 µm) |
| Display | 7 digits (decimal), green LED |
| Display Resolution | 1 nm, 0.1 nm, 0.01 nm, 0.001 nm / 100 GHz, 10 GHz, 1 GHz, 100 MHz |
| Auto-Resolution | The resolution measured by spectral width of measured light varies automatically |
| Measurement Wavelength Accuracy | ±wavelength spectral width (nm) × 5/100 ± 5 ppm ± 1 count |
| Measurement Frequency Accuracy | ±Frequency spectral width (GHz) × 5/100 ± 5 ppm ± 1 count |
| Measurement Stability | ±1 count for AVG mode ON |
| AVG Mode | Displays the running average in 10 measurements |
| Sampling Rate | 0.2 sec |
| Optical Input | FC/PC, GI 50/125 |
| High Frequency Modulated Light Measurement | |
| Modulation Frequency Range | 3 MHz or above |
| Sensitivity | -15 dBm average power (0.48 µm to 0.6 µm); -23 dBm average power (0.6 µm to 1.6 µm) |
| Maximum Input Level | +3 dBm peak power (0.48 µm to 1.6 µm) |
| CHOP Light Measurement | |
| Measurable CHOP Light Frequency Range | 1 to 500 Hz |
| Resolution | 1 THz to 1 GHz (frequency), 1 nm to 0.01 nm (wavelength) |
| Maximum Input Level | -5 dBm peak power (for 0.85 µm); -5 dBm peak power (for 1.3 µm) |
| D/A Output | |
| Number of Converted Digits | Three lower display digits |
| Output Voltage | 0 V to 0.999 V (approx. 1 mV/count) |
| D/A Offset | Full Scale/2 (+0.5 V) |
| Response | Approx. 150 ms |
| Output Impedance | Approx. 670 Ω |
| Conversion Accuracy | ±3 mV (at temperature of 23°C ±5°C and humidity of 85% or less) |
| Interface | |
| GPIB | Standard equipment, IEEE standard 488-1978 |
| Analog Output | Analog conversion output of lower three display digits (BNC connector) |
| General Specifications | |
| Operating Conditions | 10°C to +40°C, relative humidity of 85% or less |
| Temperature Range (Accuracy Guaranteed) | 25°C ±10°C |
| Power Supply | 90 to 132 VAC, 50/60 Hz (198 to 250 V usable range depending on specification) |
| AC Power Frequency Range | 48 Hz to 66 Hz |
| Power Consumption | 52 VA or less |
| Dimensions | Approx. 300 (W) × 132 (H) × 450 (D) mm |
| Mass | Approx. 12 kg |
| Laser Classification | Class 1 Laser Product |
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Advantest
Condition
Used
Manufacturer
Advantest
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
Request A Quote
