Planet - GT-805A - 10/100/1000BASE-T to 100/1000BASE-X SFP Media Converter
Product Overview
The Planet GT-805A is a Gigabit media converter that bridges 10/100/1000BASE-T copper to 100/1000BASE-X fiber via an SFP slot, with the SFP module supporting multi-mode distances up to 550m or single-mode up to 120km depending on the transceiver. It features Link Fault Passthrough (LFP) with LLCF and LLR functions controlled by a DIP switch for link failure propagation, TS-1000 and IEEE 802.3ah OAM support for remote management, and jumbo frame support up to 9K bytes.
Key Configuration
• Copper port: 1 × 10/100/1000BASE-T RJ45 (auto-MDI/MDI-X)
• Fibre port: 1 × 100/1000BASE-X SFP slot (SFP module required, sold separately)
• DIP switches: LFP enable/disable
• OAM: TS-1000, IEEE 802.3ah terminal support
• Jumbo frame: 9K bytes; power consumption: 4.6W max
• Dimensions: 26 × 70 × 97 mm; weight: 0.2kg
Key Features
The GT-805A is a Gigabit media converter that bridges 10/100/1000BASE-T copper to 100/1000BASE-X fibre via an SFP slot, supporting both multi-mode (up to 550m) and single-mode (up to 120km) transceivers for flexible distance extension. The RJ45 copper port supports auto-MDI/MDI-X and 10/100/1000Mbps auto-negotiation over Cat5 STP up to 100m, with jumbo frame support up to 9K bytes.
Technical Context
The converter includes a DIP switch to enable or disable Link Fault Passthrough (LFP) with LLCF and LLR functions, propagating link failure status between copper and fibre ports to trigger failover in connected equipment. It also supports TS-1000 and IEEE 802.3ah OAM for remote loopback tests and failure indication without IP connectivity, with store-and-forward switching and flow control.
Installation Notes
The compact unit (26 × 70 × 97 mm, 0.2kg) operates from 0–50°C with 5–95% RH and stores from -10–70°C, powered by a 5V/2A DC adapter (sold separately). It supports standalone use or installation into Planet MC-700, MC-1500, MC-1500R, or MC-1500R48 media chassis, with LED indicators for power, copper link/activity, and fiber link/activity. TAA compliant with FCC Class A and CE Class A certifications.
| Hardware Specifications | |
| Hardware Version | 3 |
| Standards | IEEE 802.3, 10Base-T IEEE 802.3u, 100Base-TX IEEE 802.3ab, 1000Base-T IEEE 802.3z, 1000Base-SX/LX |
| Ports | 1 x 10/100/1000Base-T port, 1 x 1000Base-SX/LX port |
| Copper Interface | RJ-45 port (Auto-MDI/MDI-X) Twisted Pair |
| Optic Interface | GT-802/GT-802S: SC GT-805A: SFP GT-806A15/GT-806B15/GT-806A60/GT-806B60: WDM |
| Fiber Maximum Distance | GT-802: 220 / 550m GT-802S: 10km GT-805A: N/A GT-806A15: 15km GT-806B15: 15km GT-806A60: 60km GT-806B60: 60km |
| Optic Wavelength | GT-802: 850nm GT-802S: 1310nm GT-805A: N/A GT-806A15: TX:1310nm RX:1550nm GT-806B15: TX:1550nm RX:1310nm GT-806A60: TX:1310nm RX:1550nm GT-806B60: TX:1550nm RX:1310nm |
| Max. Optical Launch Power | GT-802: -4dBm GT-802S: -3dBm GT-805A: N/A GT-806A15: -3dBm GT-806B15: -3dBm GT-806A60: +5dBm GT-806B60: +4dBm |
| Min. Optical Launch Power | GT-802: -9.5dBm GT-802S: -9.5dBm GT-805A: N/A GT-806A15: -9dBm GT-806B15: -9dBm GT-806A60: 0dBm GT-806B60: -1dBm |
| Max. Input Power | GT-802: N/A GT-802S: -3 GT-805A: N/A GT-806A15: -3 GT-806B15: -3 GT-806A60: -2 GT-806B60: -2 |
| Min. Input Power | GT-802: -18 GT-802S: -20 GT-805A: N/A GT-806A15: -21 GT-806B15: -21 GT-806A60: -25 GT-806B60: -25 |
| Optical Link Budget | GT-802: 3dB(62.5/125μm) 4dB(50/125μm) GT-802S: 4.9dB GT-805A: N/A GT-806A15: 12dB GT-806B15: 12dB GT-806A60: 25dB GT-806B60: 24dB |
| Speed | Twisted-pair: 10/20Mbps for half/full-duplex 100/200Mbps for half/full duplex 2000Mbps for full-duplex Fiber-optic: 2000Mbps for full-duplex |
| Cable | Twisted-pair 10Base-T: 2-pair UTP Cat. 3,4,5, up to 100m 100Base-TX: 2-pair UTP Cat. 5, up to 100m 1000Base-T: 4-pair STP Cat 5 up to 100m Fiber-optic Cable 50/125μm or 62.5/125μm multi-mode fiber cable, up to 220/550m. 9/125μm single-mode cable, providing long distance for 10/15/20/30/40/50/60/70/120km (vary on fiber transceiver or SFP module) |
| LED Indicator | PWR TP LINK/ACT, 1000 Fiber LINK/ACT |
| DIP Switch | LFP function (Disable / Enable) setting |
| OAM | TS-1000 and IEEE 802.3ah Terminal mode supported |
| Jumbo Packet Size | 9K |
| Power Consumption | 4.6 watts / 15 BTU (maximum) |
| Power Input | DC 5V / 2A |
| Dimensions (W x D x H) | 26 x 70 x 97 mm |
| Weight | 0.2kg |
| Operating Environment | Operating temperature: 0 to 50 degrees C; Humidity: 5~95% non-condensing |
| Storage Environment | storage temperature: -10 to 70 degrees C; Humidity: 5~95% non-condensing |
| Emissions | FCC Class A, CE Class A |
