What is the GYXTS loose tube fiber optic cable?

What Is GYXTS Fiber Optic Cable?  GYXTS is an outdoor central loose-tube optical cable construction with a steel-polyethylene bonded sheath. This guide explains its structure, suitable routes, mechanical protection, related cable types, and the information needed for specification and ordering.

GYXTS identifies a cable construction family rather than a complete purchase specification. Fiber category, fiber count, reinforcing arrangement, cable diameter, tensile and crush ratings, bend radius, temperature limits, water-blocking method, delivery length, and installation route must still be confirmed on the exact product datasheet.

■What Does GYXTS Mean?

GYXTS is part of the central-tube outdoor telecommunication optical cable family covered by YD/T 769-2018. The construction normally places the fibers in one gel-filled loose tube and uses a steel-polyethylene bonded sheath. The metallic layer improves moisture resistance and mechanical protection compared with a simple polyethylene-sheathed central-tube cable.

The exact reinforcement varies by product. Some GYXTS variants add steel wires or other protection for a defined route or biological-risk application. ZION's GYXTS steel-tape uni-tube fiber optic cable is one specific anti-rodent product example; its published construction and ratings should not be applied automatically to every GYXTS cable.

■GYXTS Cable Structure

The optical fibers sit inside a central loose tube made from a suitable high-modulus polymer. The loose tube allows the fibers to move within a controlled space and helps isolate them from part of the strain applied to the cable. Filling compound or another declared water-blocking system limits longitudinal water migration. A steel tape layer is bonded to polyethylene, and the outer PE sheath provides normal outdoor weather protection.

Central loose tube: Creates a compact construction for a defined range of fiber counts. Confirm the tube capacity and available fiber count for the selected cable.

Water blocking: The central tube normally uses filling compound in the standard gel-filled construction. Verify the material and termination procedure on the datasheet.

Steel-polyethylene bonded sheath: Adds a metallic moisture barrier and improves mechanical protection, but it also introduces metallic-path grounding, bonding, and lightning considerations.

Product-specific reinforcement: Parallel or stranded steel wires, additional armor, and double sheaths must be specified explicitly. They are not guaranteed by the basic GYXTS name alone.

■Where Can GYXTS Cable Be Used?

A correctly specified GYXTS cable can be considered for outdoor telecom access, campus networks, CCTV backhaul, industrial communication, ducts, tunnels, protected channels, and approved lashed aerial routes. Its steel-tape layer can provide more mechanical and moisture protection than a basic non-armored central-tube cable.

Route approval still depends on the selected cable's tensile load, crush resistance, minimum bend radius, span and support method, water penetration performance, temperature range, and local installation rules. Do not assume that every GYXTS cable is self-supporting or suitable for direct burial. Exposed burial, severe impact, persistent flooding, and high rodent pressure may require a heavier armor system, double sheath, protective conduit, or a different cable family.

Where gnawing damage is a credible risk, compare the full construction and evidence available for ZION's rodent-resistant fiber optic cable range. “Rodent-resistant” describes a risk-reduction design, not a universal guarantee against every animal, installation condition, or exposure duration.

■GYXTS Compared With Related Cable Types

GYXTS

Central loose tube with a steel-polyethylene bonded sheath. ZION's GYXTS steel-tape uni-tube fiber optic cable is a product-specific example for routes needing a compact central-tube cable with a metallic moisture and mechanical protection layer.

GYXTY

Central gel-filled loose tube with a PE sheath and metallic reinforcing member, but without the steel-polyethylene bonded sheath identified by the S designation. ZION's GYXTY steel-wire uni-tube cable is a product-specific reinforced variant.

GYXTW

Central loose tube with a steel-polyethylene bonded sheath and parallel reinforcing wires. ZION's GYXTW light-armored central-tube fiber optic cable shows this reinforcing arrangement; compare the pulling, crush, diameter, and route requirements of the exact models.

GYFXTY

A related central-tube cable using a non-metallic reinforcing member. ZION's GYFXTY FRP-wire uni-tube fiber optic cable is a product-specific example for projects requiring an all-dielectric reinforcing system; confirm its complete sheath, armor, and mechanical ratings.

■Fiber Type, Count, and Color Identification

GYXTS describes the cable construction, not the optical performance category. G.652.D single-mode fiber is a common option for outdoor telecom links, but it is not mandatory in every GYXTS cable. Specify the fiber category from the link budget, operating wavelengths, bend conditions, transmission equipment, network-owner requirements, and applicable standards.

A commonly used 12-color identification sequence is blue, orange, green, brown, gray, white, red, black, yellow, violet, pink, and aqua. The final color sequence and fiber numbering must match the cable datasheet, project standard, and splice plan. Do not infer fiber count from the GYXTS name alone.

■Standards and Datasheet Checks

YD/T 769-2018 is the current Chinese industry standard for central gel-filled loose-tube outdoor telecommunication optical cables and replaced YD/T 769-2010. For G.652 single-mode fiber, use the current ITU-T Recommendation G.652 and the chosen fiber manufacturer's datasheet rather than copying historical values into every cable specification.

Before approval, check the manufacturer's declared installation and long-term tensile loads, crush resistance, bend radius, cable diameter and mass, temperature range, water penetration performance, fiber attenuation, metallic bonding requirements, sheath marking, drum length, packing, and test documentation. System reach cannot be guaranteed from the fiber category alone because it also depends on transmitter power, receiver sensitivity, wavelength, connectors, splices, dispersion, penalties, and design margin.

■Information to Prepare Before Ordering

Send the following information with the inquiry:

• Required fiber category, fiber count, and color-code convention

• Route type: duct, tunnel, lashed aerial, conduit, tray, protected burial, or another pathway

• Route length, drum-length plan, splice locations, pulling method, and support hardware

• Required tensile, crush, bend, impact, water, temperature, and rodent-risk performance

• Metallic-path grounding, bonding, lightning, and electrical-separation constraints

• Required standard edition, sheath marking, test reports, packing, and delivery documents

■Frequently Asked Questions

Is GYXTS an armored fiber optic cable?

GYXTS uses a steel-polyethylene bonded sheath that adds metallic protection. However, the exact armor and reinforcement arrangement still depends on the product. Confirm the construction drawing and datasheet instead of relying only on the short designation.

Can GYXTS cable be installed directly underground?

Only when the selected product is approved for the burial method and the route conditions. Severe crush, impact, water, or rodent exposure may require additional armor, a double sheath, conduit, or another construction.

Does steel tape make every GYXTS cable rodent-proof?

No. A metallic layer can reduce gnawing risk, but performance depends on material, coverage, cable design, installation, animal type, and exposure. Use the supplier's declared construction and project risk assessment.

Is G.652.D fiber mandatory in GYXTS cable?

No. GYXTS identifies the cable construction. Specify the required optical fiber category separately according to the link design, equipment, wavelengths, bend conditions, and applicable standards.