GLC-LX-SM-RGD – 1000BASE-LX/LH 1310nm – 10 km SMF / 550 m MMF – Industrial Temperature SFP
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GLC-LX-SM-RGD Description
The GLC-LX-SM-RGD is a Cisco 1000BASE-LX/LH rugged SFP transceiver for 1G fiber links in unheated outdoor and industrial enclosures. The module reaches 10 km over single-mode fiber or 550 m over multimode fiber at 1310 nm, with DOM support and an industrial temperature range of -40 to 85°C. Over legacy multimode fiber, the transmitter should be coupled through a mode conditioning patch cable.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
GLC-LX-SM-RGD |
|
Optical standard |
1000BASE-LX/LH, compatible with IEEE 802.3z 1000BASE-LX |
|
Wavelength |
1310 nm, with a 1270 to 1355 nm transmit and receive range |
|
Reach |
Up to 10 km on single-mode fiber and up to 550 m on any multimode fiber, minimum 2 m |
|
Transmit and receive power |
-3 to -9.5 dBm transmit, -3 to -20 dBm receive |
|
Maximum channel insertion loss |
6 dB on G.652 single-mode fiber and 2.4 dB on any multimode fiber |
|
Operating temperature |
Industrial range IND, -40°C to 85°C (-40°F to 185°F) |
|
Digital optical monitoring |
Supported |
|
Power consumption |
Up to 1W per SFP port |
Application Scenarios
In an unheated roadside or trackside cabinet, the module links the cabinet switch back to an equipment room over single-mode fiber, and its -40 to 85°C rating covers the cold end of the ambient range.
A substation or process plant can run the module on single-mode spans of up to 10 km between buildings, where cabinets see wide ambient swings.
Related Ordering Boundary
Temperature Class Against The Standard Long-Wavelength SFP
GLC-LX-SM-RGD and GLC-LH-SMD are both 1000BASE-LX/LH optics with the same wavelength, reach and optical power figures; the rugged PID carries the IND range of -40 to 85 degrees C while GLC-LH-SMD carries the EXT range of -5 to 85 degrees C, so the 35 degrees C at the cold end is the whole difference between the two order lines.
Reach And Fiber Type Against The Other Rugged Optics
Within the rugged group the split is by distance and fiber: GLC-SX-MM-RGD runs 850 nm on multimode only and reaches 220 m on FDDI-grade fiber up to 550 m, while GLC-ZX-SM-RGD runs 1550 nm on single-mode for approximately 70 km depending on link loss. A span between 550 m and 10 km on single-mode fiber is the band this PID covers.
Host Platform Support Sits Outside The Data Sheet
The Cisco SFP data sheet lists a generic platform table rather than a per-SKU support matrix, so host platform and software support for this optic is confirmed through the Cisco transceiver module device support tables instead.
Selection Guide
GLC-LX-SM-RGD suits single-mode spans up to 10 km in enclosures where the ambient can fall toward -40°C, and it also reaches 550 m on multimode fiber through a mode conditioning patch cable. Enclosures that stay above -5°C get the same optical performance from GLC-LH-SMD. Multimode-only spans at the same industrial rating run on GLC-SX-MM-RGD, and single-mode spans beyond 10 km run on GLC-ZX-SM-RGD at approximately 70 km, depending on link loss.
Ordering Checklist
- Multimode patch cable: Add a mode conditioning patch cable as a separate order line when the run uses legacy multimode fiber; single-mode fiber needs none. The 1000BASE-LX/LH transmitter should be coupled through it on legacy multimode.
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | GLC-LX-SM-RGD | Cisco ordering description | 1000BASE-LX/LH long wavelength; rugged, spare part number GLC-LX-SM-RGD= |
| Optical standard | 1000BASE-LX/LH, compatible with the IEEE 802.3z 1000BASE-LX standard | Form factor | SFP |
| Wavelength | 1310 nm | Wavelength range | 1270 to 1355 nm |
| Single-mode fiber reach | Up to 10 km (32,821 ft) | Multimode fiber reach | Up to 550 m (1,804 ft) on any multimode fiber |
| Multimode fiber detail | 550 m on 62.5 micron fiber at 500 MHz-km, and 550 m on 50 micron fiber at 400 or 500 MHz-km | Minimum fiber distance | 2 m (6.5 feet) |
| Legacy multimode requirement | The transmitter should be coupled through a mode conditioning patch cable when used over legacy multimode fiber type | Transmit power range | -3 to -9.5 dBm |
| Receive power range | -3 to -20 dBm | Maximum channel insertion loss | 6 dB on G.652 single-mode fiber and 2.4 dB on any multimode fiber |
| Link distance limits | Bounded by both optical power budget and channel insertion loss, and both must be met for guaranteed operation | Digital optical monitoring | Supported |
| Operating temperature | Industrial temperature range IND, -40°C to 85°C (-40°F to 185°F) | Storage temperature | -40°C to 85°C (-40°F to 185°F) |
| Dimensions (H x W x D) | 8.5 x 13.4 x 56.5 mm | Weight | 75 grams or less |
| Maximum power consumption | Up to 1W per SFP port | Safety certifications | Laser Class I 21CFR1040 LN#50 7/2001 and Laser Class I IEC 60825-1 |
| Standards compliance | IEEE 802.3z, IEEE 802.3ah, GR-20-CORE, GR-326-CORE, GR-1435-CORE and IEC 60603-7:2000 | Host compatibility reference | Host platform and software support is published in the Cisco transceiver module device support tables rather than in the SFP data sheet |
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Customer Reviews
Questions & Answers
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Which 1310 nm optical row does Cisco's installation note place GLC-LX-SM-RGD in?
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Does GLC-LX-SM-RGD support DOM and what temperature class does it carry?
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How much power can GLC-LX-SM-RGD draw per SFP port?
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Where does the 550 m multimode reach of GLC-LX-SM-RGD apply?
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