Keysight 81491A Reference Transmitter
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Keysight 81491A is a reference transmitter for NRZ and PAM4 signals with 33 GHz bandwidth, supporting baud-rates up to 32 Gbaud and multiple wavelength options.
Product details
| Model | 81491A |
| Manufacturer | Keysight |
| Category | Network & Fiber Optic Test |
| Availability | Made to order |
Description
Overview
The Keysight 81491A is a reference transmitter designed to provide excellent eye quality for NRZ and PAM4 signals at baud-rates up to 32 Gbaud. It functions as a universal electro-optical converter and is fully integrated into Keysight's Optical Receiver Stress Test solutions for testing modern optical communication standards.
Key Features
- 33 GHz typical electro-optical bandwidth
- Support for NRZ and PAM4 signal formats up to 32 Gbaud
- Multiple optical wavelength options: 850 nm (Multimode), 1310 nm and 1550 nm (Single-Mode)
- Rise and fall times less than 15 ps (typical)
- Low jitter: less than 1 ps RMS typical, less than 7 ps peak-to-peak
- TDEC for 28 Gb/s NRZ: less than 0.9 dB (typical)
- TDECQ for 26.56125 Gbaud PAM4: less than 1.2 dB (typical)
- External optical input available for tunable laser sources (SM option)
Applications
- IEEE 802.3 10GBASE optical standards testing
- IEEE 802.3 40GBASE optical standards testing
- IEEE 802.3 100GBASE optical standards testing
- IEEE 802.3 400GBASE optical standards testing
- Optical receiver stress testing and characterization
Specifications
| Electro-optical Bandwidth | 33 GHz (typical) |
| Maximum Baud Rate | 32 Gbaud |
| Signal Formats | NRZ and PAM4 |
| Optical Wavelengths | 850 nm (MM), 1310 nm and 1550 nm (SM) |
| Rise/Fall Time | < 15 ps (typical) |
| Jitter (RMS) | < 1 ps (typical) |
| Jitter (Peak-to-Peak) | < 7 ps (typical) |
| TDEC (28 Gb/s NRZ) | < 0.9 dB (typical) |
| TDECQ (26.56125 Gbaud PAM4) | < 1.2 dB (typical) |
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Keysight 81491A Reference Transmitter
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