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TT Instruments

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TT Instruments

ISO-certified UK supplier of telecoms, laboratory and electronic test equipment. Our customers keep coming back.

Worldwide sales, fast shipping, trusted service and a commitment to sustainability. Based in the UK, we offer a wide range of quality vintage, used and new Test & Measurement equipment at hugely discounted prices. Ranging from RF and Electronic Testing to Communications such as Fibre Optic, OTDRs, OSAs, Fusion Splicers, cable and network analyzers and much more. We pride ourselves in offering exce

ptional customer service as evidenced by our numerous customer testimonials, both local and international. Customer satisfaction is at the heart of everything we do. We are passionate about excellent service and it is important for us that all our customers are satisfied and we exceed their expectations.

02/06/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi Certifier 40G NGC-4500 Cable Certifier Set with SM MM and CAT 6A Adapters 🔥 Description below!

⎆ ONLY £5,095.75 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/nbljx9xfaoci

Check out our bio for more & . We are based in the and

Viavi Certifier 40G NGC-4500 Cable Certifier Set with SM MM and CAT 6A Adapters
Condition: Used

Viavi Certifier 40G NGC-4500 Cable Certifier Set - Tested Working

New battery fitted for local unit.

Included in the sale:

* 1 x VIAVI Certifier 40G local unit

* 1 x VIAVI Certifier 40G remote unit

* 1 x soft carry case

* 1 x documentation pack

* 2 x single-mode fibre modules, 1310/1550 nm

* 2 x multimode fibre modules, 850/1300 nm

* 2 x CAT 6A channel adapters

* 2 x CAT 6A permanent link adapters

* 2 x OM1 simplex FC-SC 2 m fibre leads

* 2 x SM simplex LC-LC 2 m fibre leads

* 2 x SM simplex SC-LC 2 m fibre leads

* 2 x SM duplex SC-SC 2 m fibre leads

* 2 x interchangeable LC adapters

* 2 x white connection leads as pictured

Product Description (from the manufacturer):
The VIAVI Certifier is designed for certification of both copper and fibre enterprise cabling. Certifier40G supports copper certification up to Category 6A and Tier 1 multimode and single-mode fibre certification. The platform uses Local and Remote units for dual-ended testing, allowing setup and results to be viewed from either end. It is intended for enterprise and data centre cabling certification workflows.

01/06/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi JDSU MTS 4000 V2 with 4138 FB65 1310/1550/1650 Live PM-S OTDR P5000i FI-60 🔥 Description below!

⎆ ONLY £3,395.75 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/zc8bux8tzz2g

Check out our bio for more & . We are based in the and

Viavi JDSU MTS 4000 V2 with 4138 FB65 1310/1550/1650 Live PM-S OTDR P5000i FI-60
VIAVI JDSU MTS 4000 V2 with 4138 FB65 PM-S OTDR Module, P5000i Fibre Microscope and FI-60 Fibre Identifier

In good overall used condition, with visible cosmetic signs of use to the mainframe, module, screen surround, underside plates and carry case. The unit powers on correctly and the installed hardware, software versions and software options are shown in the photographs. Please refer to all images for the exact condition.

Manufacture dates:

* Mainframe: 2021-01

* OTDR module: 2021-03

Included in the sale

* VIAVI JDSU MTS 4000 V2 mainframe

* Built-in 40PMVFL power meter and visual fault locator (2.5m connectors on both)

* Wireless + Bluetooth

* VIAVI 4138 FB65 PM-S OTDR module

* SC-APC single-mode OTDR port

* 1310 / 1550 / 1650 nm live

* 43 / 41 / 41 dB dynamic range

* P5000i fibre inspection microscope

* P5000i tip / adaptor kit in hard case (bulkhead, SC FC LC (PC) and SC-APC) Patchcord PC+APC 1.25/2.5mm

* VIAVI FI-60 fibre identifier with 1.25 and 2.5mm connectors

* Retractable USB cable

* Carry case

* Fibre microscope carry case

* Power adapter

* Stylus

* Assorted fibre cleaning tools / cleaning pens

* Assorted loose fibre adapters / tips

Software options shown on the unit

* SMART_ACCESS_L2

* FTTH_SLM

Software versions shown on the unit

* Instrument Setup 24.2.7

* Microscope 24.2.7

* Fiber Optics 24.2.7

Notes

* Only the items shown in the photographs are included in the sale

From the manufacturer:

Please refer to the manufacturer datasheet for the full technical specification.

31/05/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi JDSU OTU 8000E v2 Chassis with OTAU 1x8 Optical Switch MFD 2020 🔥 Description below!

⎆ ONLY £760.75 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/gtkc7ng-ic4z

Check out our bio for more & . We are based in the and

Viavi JDSU OTU 8000E v2 Chassis with OTAU 1x8 Optical Switch MFD 2020
Condition: Used

This unit is in excellent condition and is supplied as pictured. No module.

Included in the sale:

* Viavi OTU 8000E (v2) Base unit
* Viavi 8 port optical switch OTAU 1x8
* AC Power Adapter
* Other accessories as pictured

30/05/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi FIT-S205-PRO HP2-60-P4 Fiber Scope with Tips and Power Meter + VFL 🔥 Description below!

⎆ ONLY £335.75 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/fkus06ifqkjy

Check out our bio for more & . We are based in the and

Viavi FIT-S205-PRO HP2-60-P4 Fiber Scope with Tips and Power Meter + VFL
Condition: Used

In good working condition, refer to images and description below.

Essential Tool Kit for Fiber Handling

The JDSU HP2 Series inspection and test systems combine fiber inspection and optical power measurement into a single seamless handheld device. The result is a significant increase in workflow efficiency with a system that is easy, repeatable, and fast in performing essential tests in less than half the time it takes with other tools

Kit Includes:

* HP2-60-P4 Handheld display with integrated power meter (with 1.25/2.5mm adapters) and 400X patch cord microscope (with 1.25/2.5mm adapters)
* FBP-P5 200/400x dual magnification probe scope
* Inspection tips for SC (FBPT-SC) and LC (FBPT-LC) bulkheads
* Visual fault locator
* Universal VFL adapters for 2.5 mm and 1.25 mm (FFL-050-U12) connectors
* Power adapter
* Carrying Case

Patchcord in images is NOT included.

29/05/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi JDSU mOPM-B1RH1 Power Meter mOPM-B1 Single Channel Remote Interface Casset 🔥 Description below!

⎆ ONLY £675.75 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/lhbbe7o8s3a_

Check out our bio for more & . We are based in the and

Viavi JDSU mOPM-B1RH1 Power Meter mOPM-B1 Single Channel Remote Interface Casset
Condition: Used

Good working condition. No accessories or other components unless pictured. Multiple units in stock.

Refer to manufacturer datahseet for specifications.

28/05/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi JDSU 41MPO12SM Multi-Fiber MPO Based OTDR Switch Module 1X12 APC 🔥 Description below!

⎆ ONLY £675.75 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/_guq6rpvoo80

Check out our bio for more & . We are based in the and

Viavi JDSU 41MPO12SM Multi-Fiber MPO Based OTDR Switch Module 1X12 APC
Condition: Used

In good working condition. Note only the module is supplied, you will need a compatible mainframe such as the MTS 4000 or ONA-800A (with module carrier).

From the manufacturer:

Compact MPO based embedded Switch Module All-in-one integrated switch solution automating OTDR uni-directional/bidirectional and Bidirectional IL/ORL and OTDR FiberComplete PRO tests

Perfectly suited for MPO based networks and high fiber count cables, the on-board switch allows an automated test sequence up to 12 fibers.

Characterize individual fibers within high fiber count cables. Conduct upcoming patch panel port inspections while the automated OTDR test sequence is on-going. Test more fibers within the same time frame.

Certify new installations to industry standards. Eliminate the complexities of using fanout/break-out cables for MPO/MTP native networks certifications.

Troubleshoot issues at the press of a button. Speed fiber fault location with precise localization of issues like severe bends, high-loss splices and dirty or poor connections.

Benefits

• Simplify your test process for all native MPO/MTP network characterization, certification or troubleshooting

• Accelerate the high fiber count cable tests workflow and Transform time in money

• Measure with confidence with reduced manual process and complexity

Features

• All in one solution, on board module conveniently powered by the platform

• Replaces multi-fiber fanout patchcords where native MPO links installed

• Efficient workflow with automated switching over 12 ports through Cable-SLM software

• Compatible with OTDR 4100 series modules A, B, C, QUAD and with bidirectional IL, ORL and OTDR FiberComplete modules and with TrueBIDIR SW option

Applications

• Data Center (structured cabling, campus, interconnect)

• FTTH (fiber indexing)/Access Networks

• Mobile Fronthaul (FTTA/C-RAN)

27/05/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi ONA-800 Mainframe with 8123 EVO AV RDZ Hi-Res MM OTDR Module E8123AV 🔥 Description below!

⎆ ONLY £4,755.75 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/hbnm539x1eg_

Check out our bio for more & . We are based in the and

Viavi ONA-800 Mainframe with 8123 EVO AV RDZ Hi-Res MM OTDR Module E8123AV
Condition: Used

In excellent condition, pictures of actual product.

Included in the sale:

Viavi ONA-800 oneAdvisor Mainframe (MFD 2022) with ONA-800A-MF2 dual module carrier for 4100 series + one 8100 series module carrier

o E8123AV RDZ MM 850/1300 His Res 24/dB (OTDR module MFD 2016)

AC Power Adapter

Stylus

Carry Bag

26/05/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi JDSU OLT-55 SmartClass Optical Loss Test Set 1310/1550 nm 2286/01 PM+LS. 🔥 Description below!

⎆ ONLY £165.75 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/x8bcqti0qvme

Check out our bio for more & . We are based in the and

Viavi JDSU OLT-55 SmartClass Optical Loss Test Set 1310/1550 nm 2286/01 PM+LS.
Condition: Used

In working condition, refer to images for cosmetic condition. Power adapter or batteries not included. Refer to image 2 for specs. This is the 2286/01 1310/1550 version

From the manufacturer:

A complete range of SMART Optical Loss Test Sets for the newest applications including broadband, PONs and Gigabit Ethernet.

The new OLT-55 SMART Optical Loss Test Set is a universal instrument combining a light source and a power meter in a single unit for singlemode fibers from lab through to installation, maintenance and troubleshooting.

Highlights

* Three versions available including one FTTx version (1310/1550nm, 1310/1490/1550nm and 1310/1550/1625nm).
* Loss at up to 3 wavelengths measured and displayed simultaneously.
* Independent quick referencing for all built-in wavelengths whilst the instrument is in measurement mode by connecting the source and power meter via a patch fiber cable.
* Can be used as a standalone power meter or laser source with all the features of the OLS-55 SMART Optical Light Source and the OLP-55 SMART Optical Power Meter.
* Built-in auto-zeroing for very low power levels or high loss measurements.
* Built-in USB interface for easy remote control & report generation.
* New Visual Fault Locator option.
* New Host USB data storage option.

Applications

* Testing optical signals and systems including broadband, PONs and Gigabit Ethernet.
* For singlemode fibers in a lab environment, manufacturing (USB interface), installation, maintenance and troubleshooting.

Key Features

* Auto-lambda function provides automatic wavelength detectection to speed up testing.
* Power Meter input reflection trap to reduce reflection between adaptor and photodiode for increased accuracy.
* High output level stability due to built-in optical isolators.
* SMARTStar graphical user interface for fast and easy operation.
* SMARTEnergy power supply management system.
* A robust, shock-proof, and splash-proof design for field operation.
* Quick start operation, requiring no warm-up time and reducing testing time.
* Traceable measurements to NIST/PTB standards for confidence in accuracy.
* One-handed operation in the field.

25/05/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi JDSU OLA-55M Fiber Optical Level Attenuator 1260-1650 nm SM 2280/22 SC/APC 🔥 Description below!

⎆ ONLY £505.75 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/mka4ilhtuaot

Check out our bio for more & . We are based in the and

Viavi JDSU OLA-55M Fiber Optical Level Attenuator 1260-1650 nm SM 2280/22 SC/APC
Condition: Used

In excellent working condition, tested and within specification.

Refer to image 2 for specifications.

From the manufacturer:

The Viavi 228022 is a SmartClass OLA-55M Single-Mode Variable Attenuator with Level Control Mode and APC. This future-proof variable attenuator is designed for fiber system testing - as well as installation, maintenance, and production of single-mode fibers. It also provides an implemented power meter for stabilized level controller applications.

* Reduces testing time: Quick start operation and no warm-up
* Excellent overall accuracy: 400 adjustable wavelengths

The Viavi 2280/22 SmartClass OLA-55M Single-Mode, Variable Attenuator with Level Control Mode, APC, is a future-proof, improved variable attenuator designed for fiber system testing as well as installation, maintenance, and production of singlemode fibers. The OLA-55M Motorized Optical Level Attenuator also provides an implemented power meter for stabilized level controller applications.

The SmartClass OLA-55M Optical Level Attenuator can be used as part of a SmartClass Optical Test Kit (sold separately) that contains all of the tools, including instruments and accessories, necessary to perform professional-grade power or loss tests in the field.

Automatic Level Controller Mode

Most applications require a defined power level rather than a certain level of attenuation. A standard attenuator only allows the setting of an attenuation value. Against it, the level controller mode of the SmartClass OLA-55M allows direct setting of a precise and defined optical power level. It integrates the function of an attenuator and a power meter and therefore avoids extra steps to adjust the power level with a separate power meter. Being in this mode the attenuator is automatically counterbalancing the changes of varying input power level and provides a stable output level.

Key Features

* Reduces testing time with quick start operation that requires no warm-up time
* Provides excellent overall accuracy with 400 adjustable wavelengths
* Reduces need for couplers and additional instruments in test setups
* Minimizes insertion loss due to special optical design
* Robust, shock-proof, and splash-proof design ideal for field operation
* USB port allows for remote operation
* Offers both absolute and relative attenuation setting
* Level controller function allows direct setting of attenuator output level
* Suitable for 40 Gbps due to low Differential Group Delay
* Traceable measurements to NIST/PTB standards for high accuracy
* APC SC mounted with FC interchangeable adapter enclosed

Applications:

* Emulate fiber loss for testing system dynamics
* Simulate line loss for BER testing and amplifier testing
* System installation and maintenance of singlemode fiber
* Power level control for calibration test setups

Specifications

Refer to image 2.

24/05/2026

We've added a new product to our store.

JDSU ⎆
🔥 Viavi MPO Switch MM FOD5510M 1x12 with Launch Cables 🔥 Description below!

⎆ ONLY £80.00 WHILE STOCKS LAST! ⎆
► Visit our website www.ttinstruments.com◀︎
or click here to go straight to this product: https://shortlink.store/lcooqsnt9brq

Check out our bio for more & . We are based in the and

Viavi MPO Switch MM FOD5510M 1x12 with Launch Cables
Condition: Used

This product is in good condition. Note we have multiple units so cosmetically they may differ a little from the pictured unit.

Address

Canterbury Street
Blackburn
BB22DY

Opening Hours

Monday	9am - 5pm
Tuesday	9am - 5pm
Wednesday	9am - 5pm
Thursday	9am - 5pm
Friday	9am - 5pm
Saturday	9am - 5pm

Website

https://www.ttinstruments.com/

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