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#Post#: 20--------------------------------------------------
FAQs You May Ask When Using 1000BASE-LX/LH SFP
By: AnnieHunter Date: August 16, 2018, 12:46 am
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There are many forms of fiber optic transceiver used in fiber
optic transmission. 1000BASE-LX/LH SFP, one of the typically
used optical transceiver, is now widely used in optical
community structures. Here are some common questions we might
have when the use of Cisco 1000BASE-LX/LH SFP (GLC-LH-SM or
GLC-LH-SMD) transceivers. And from the solutions, we would have
a deeper knowledge of the use of these fiber optics.
Q1: Can 1000BASE-LX compatible with 100BASE-LX?
A1: 1000BASE-LX and 100BASE-FX are very exclusive standards.
1000BASE-LX SFP (GLC-LH-SMD) and 100BASE-LX SFP (GLC-FE-100LX)
are 2 module types, one for GE and one for FE slots. The
GLC-LH-SMD will no longer operate at 100Mbps. You will need to
apply a 100Mb module to connect to some other device at 100Mb.
Check optical transceiver compatibility with your system by
means of reviewing the Cisco Fast Ethernet SFP module
compatibility record and pick out the one it says is well
matched.
Q2: What is the difference among LH and LX modules?
A2: Long Haul (LH) denotes longer distances while Long
Wavelength (LX) denotes much less power which is obviously
shorter distance. Before it was standardized 1000BASE-LX10
become essentially already in substantial use through many
companies as a proprietary extension known as either
1000BASE-LX/LH or 1000BASE-LH.
Q3: Does 1000BASE-LX SFP work with 1000BASE-LH SFP? What does it
infer if a module says like "Cisco 1000BASE-LX/LH SFP"?
A3: Yes, the 1000BASE-LX will paintings with the 1000BASE-LH.
For example, Cisco 1000BASE-LX/LH SFP is either made for single
mode (long distance) / multimode (brief distance). But this
module may be used for each Single-mode and Multimode. The Cisco
1000BASE-LX/LH SFP, well suited with the IEEE 802.3z 1000BASE-LX
widespread, operates on trendy single-mode fiber-optic hyperlink
spans of up to 10 km and as much as 550 m on any multimode
fibers. When used over legacy multimode fiber kind, the
transmitter need to be coupled via a method conditioning patch
cable.
Q4: What about Mode Conditioning Patch cords (MCP)?
A4: When choosing an optical transceiver, watch the
transceiver’s consumer documentation for while a MCP ought to be
used (see previous hyperlink for MCP records). They are
occasionally required whilst your community’s set up optical
cable is OM1 or OM2 rated multimode fiber (MMF). In quick, the
MCP is an optical jumper that transitions the transmit fiber
from a unmarried mode fiber (SMF) to a multimode fiber.
Q5: GLC-LH-SM SFP to 1000BASELX GBIC may not link over MMF?
A5: Cisco compatibility document says: "Some customers might be
tempted to attach 1000BASE-LX/LH devices over brief reaches of
MMF jumper cables with out MCP cables. There is a threat
associated to this sort of nonstandard deployment, specifically
when the jumper cable is an FDDI-grade or OM1 kind. In such case
the power coupled at once into a sixty two.5-micron fiber may be
as high as some dBm (typically 5 to 6 dBm), and if the jumper
cable is short, the adjoining receiver might be saturated,
causing excessive bit errors fee, and eventually irreversibly
broken. We propose using MCP, however if the customer remains
reluctant to the deployment of MCP, a five-dB attenuator for
1300nm need to be used and plugged on the transmitter of the
optical module on every aspect of the hyperlink."
Q6: Does GLC-LH-SMD working with GLC-LH-SM?
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