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STARTECH
STARTECH GLCZXSMRGDST SFP transceiver 1550nm 70 km 1.25 Gbps
A single-mode SFP transceiver delivers 1.25 Gbps over 70 km at 1550 nm wavelength for 1000BASE-ZX networks
- Device TypeTransceiver
- StandardsIEEE 802.3z 1000BASE-ZX
- Wavelength1550nm
- Fiber CableSingle Mode
- ProtocolsTCP/IP
- Ports1 - Fiber Optic LC Duplex Female
- Gigabit Ethernet links over 70 km single-mode fiber
- Cisco GLC-ZX-SM-RGD compatible SFP module
- IEEE 802.3z 1000BASE-ZX standard compliant
- Hot-swappable with DDM monitoring support
- Low power consumption under 1 W
Cisco-compatible SFP for long-haul fibre
This StarTech.com GLCZXSMRGDST transceiver delivers 1.25 Gbps over single-mode fibre at 1550 nm. It is built for network operators who need a drop-in replacement for the Cisco GLC-ZX-SM-RGD module. The hot-swappable SFP form factor fits standard Mini-GBIC slots in switches and routers.
1000BASE-ZX reach and temperature limits
The IEEE 802.3z 1000BASE-ZX standard defines a maximum link distance of 70 km (43.5 mi) on single-mode cable. Operating temperature is rated from 0 °C to 70 °C (32 °F to 158 °F), while storage spans -40 °C to 85 °C (-40 °F to 185 °F). Humidity tolerance is 5 % to 95 % RH non-condensing.
70 km capacity with sub-1 W draw
The module comfortably handles campus and metro links up to the full 70 km specification while consuming less than 1 W. Digital diagnostic monitoring provides real-time optical power and temperature data. It will not serve shorter-reach multi-mode environments or speeds beyond 1.25 Gbps.
Highlights
- Gigabit Ethernet links over 70 km single-mode fiber
- Cisco GLC-ZX-SM-RGD compatible SFP module
- IEEE 802.3z 1000BASE-ZX standard compliant
- Hot-swappable with DDM monitoring support
- Low power consumption under 1 W
Specifications
| Brand | StarTech.com |
|---|---|
| Model | GLCZXSMRGDST |
| Device Type | Transceiver |
| Standards | IEEE 802.3z 1000BASE-ZX |
| Wavelength | 1550nm |
| Fiber Cable | Single Mode |
| Protocols | TCP/IP |
| Ports | 1 - Fiber Optic LC Duplex Female |
| Max Distance | 70 km (43.5 mi) |
| Transfer Rate | 1.25 Gbps |
| Temperature | Operating Temperature: 0 degree C to 70 degree C (32 degree F to 158 degree F) Storage Temperature: -40 degree C to 85 degree C (-40 degree F to 185 degree F) |
| Humidity | 5~95% RH |
| Feature | Delivers reliable Gigabit Ethernet connections for 1000Base-ZX compliant networks 100% Cisco compatible SFP, equivalent to Cisco GLC-ZX-SM-RGD Backed by lifetime warranty and free lifetime technical support Meets or exceeds OEM specifications and MSA (Multi-Source Agreement) industry standards Supports Digital Diagnostics Monitoring (DDM / DOM) 1550 nm optical wavelength Supports single-mode fiber (maximum distance 70 km / 43.5 mi.) LC fiber connector Maximum data rates up to 1.25Gbps Hot-pluggable |
| Weight | 0.08 |
| Package Contents | 1 - SFP transceiver |
| Shipping weight | 0.05 kg |
| Package size | 120 × 90 × 30 mm |
Questions about this item
Should I choose a different SFP for shorter links or does this 70 km module work fine?
The GLCZXSMRGDST is rated for up to 70 km on single-mode fiber; it will operate on shorter spans but you must ensure the link budget and received power stay within the transceiver limits.
What does the 1.25 Gbps rate deliver in a live Gigabit Ethernet switch?
It provides a full-duplex 1000BASE-ZX connection at line rate with IEEE 802.3z framing, so the switch sees a standard Gigabit Ethernet port.
The LC duplex port follows which MSA and what distance does that cap?
The module complies with the SFP MSA and the 1000BASE-ZX standard, which defines the 70 km reach on 1550 nm single-mode fiber.
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