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Browse a comprehensive range of professional test and measurement equipment at TT Instruments, your trusted source for high-quality fibre optic, telecommunications, RF, and electronic testing solutions. Our full collection includes everything from OTDRs, optical spectrum analysers, and fusion splicers to power meters, inspection scopes, and optical loss test sets, all sourced from leading manufacturers such as Viavi Solutions, EXFO, Fluke Networks, Fujikura, and Keysight Technologies. At TT Instruments, we specialise in supplying professionally tested, cost-effective used equipment that supports installation, maintenance, and troubleshooting across fibre optic and electronic networks, helping engineers and businesses achieve accurate, reliable results with equipment they can trust.

JDSU XGIG1K-PCIE3-X8-AI PCIe Gen3 CEM Interposer card with two CXP cables and external power supply

Viavi JDSU XGIG1K-PCIE3-X8-AI interposer card front bracket view showing USB and power connector ports

VIAVI JDSU XGIG1K-PCIE3-X8-AI 8-lane Gen3 PCIe CEM Interposer card

Model: XGIG1K-PCIE3-X8-AI

Manufacturer: VIAVI

Network Testers

In stock: 1

SKU: 4077 3C02

Condition: Used

Price: Sale price £505.75

Tektronix 016-1985-03 Rack Mount Kit complete contents laid out — mounting frame, slide rails, cables, hardware, and instruction manual

Tektronix 016-1985-03 rack kit components — PS/2 adapter cables, grey spacer rails, L-bracket, adapter plate, and hardware bag

Tektronix Rack Mount Kit 016-1985-03

Model: 016-1985-03

Manufacturer: Tektronix

In stock: 1

SKU: 7043 1B02

Condition: Used

Price: Sale price £80.75

Keysight Agilent J7211A Attenuation Control Unit front view with USB cable included, Port 1 and Port 2 SMA connectors visible

Agilent J7211A Attenuation Control Unit angled front-left view showing LCD display, numeric keypad, rotary dial and ventilation slots

Keysight Agilent J7211A Attenuation Control Unit DC to 6 GHz 121 dB 1 dB Step

Model: J7211A

Manufacturer: Agilent

In stock: 7

SKU: 7045 2B03

Condition: Used

Price: Sale price £1,015.75

Sumitomo Electric FHS-025 250µm fibre holder pair, top view showing yellow model labels and metal clamping plates

Sumitomo Electric FHS-025 fibre holder pair, bottom/rear view showing rubber fibre channel pads and metal hinge mechanism

Sumitomo FHS-025 Fiber Holder Set

Model: FHS-025

Manufacturer: Sumitomo

In stock: 5

SKU: 7049 5C03

Condition: Used

Price: Sale price £34.00

Viavi MPOLx MM Tier 1 OLTS complete kit — MPOLP-85P, MPOLS-84P, 2x P5000i scopes, carry bag, accessories

Viavi MPOLP-85P and MPOLS-84P front panel view showing touchscreens, keypads and VIAVI calibration labels

Calibrated Viavi MPO Optical Loss Test Set MM Tier 1 Certification LS PM + Scope

Model: MPOLP-85P MPOLS-84P P5000i

Manufacturer: Viavi JDSU

In stock: 1

SKU: 4017 4B03

Condition: Refurbished

Price: Sale price £4,245.75

JDSU OLT-55 Optical Loss Test Set front view, LCD showing Laser Source OFF at 1550nm -3.00dBm

JDSU OLT-55 top panel close-up showing fibre optical ports and laser warning label, screen marks visible

Viavi JDSU OLT-55 Optical Loss Test Set 1310/1550 nm 2286/01 -70 to +20 dBm

Model: OLT-55

Manufacturer: Viavi JDSU

In stock: 3

SKU: 7024 7D03

Condition: Used

Price: Sale price £165.75

JDSU OLP-55 optical power meter front view, display showing LOW dBm at 850nm in ECON mode, port cap open

JDSU OLP-55 BN 2277/04 specifications table showing Ultra High Power variant performance data across wavelengths

Viavi JDSU OLP-55 Optical Power Meter 2277/04 800-1700 Ultra High Power +30 dBm

Model: OLP-55

Manufacturer: Viavi JDSU

In stock: 2

SKU: 7022 7F05

Condition: Used

Price: Sale price £127.50

Fluke 729 FC FLK-729 30G FC automatic pressure calibrator with full accessory set, box and calibration cert

Fluke 729 FC automatic pressure calibrator in Fluke branded black soft carry pouch with pressure port visible

Fluke 729 FLK-729 30G FC 30 PSI Automatic Pressure Calibrator 729FC-30PSI

Model: FLK-729 30G FC

Manufacturer: Fluke

In stock: 1

SKU: 3886 7C01

Condition: New other (see details)

Price: Sale price £3,395.75

Agilent N4011A MIMO Multi-port Adapter front panel with accessories: control cable, SMA adapter, torque wrench

Agilent N4011A MIMO Multi-port Adapter angled view showing ventilated top cover and front panel SMA ports

Keysight N4011A MIMO/MULTI-PORT ADAPTER

Model: N4011A

Manufacturer: Keysight Agilent

In stock: 1

SKU: 4057 4D01

Condition: Used

Price: Sale price £212.50

Keysight N4952A 32 Gb/s Error Detector front panel showing Aux In, Data, Data-bar, Aux Out SMA ports and calibration label S/N MY54455014

Keysight N4952A Error Detector full accessory set — unit, original box, software CD, connector care guide, safety sheet

Keysight N4952A Error Detector Remote Head 32GB/s Option E32

Model: N4952A

Manufacturer: Keysight Agilent

In stock: 1

SKU: 4056 4D01

Condition: Used

Price: Sale price £1,525.75

EXFO FIPT-400-U25MA 2.5mm APC fiber scope adapter tip, stainless steel body, front view

EXFO FIPT-400-U25MA adapter in sealed bag showing barcode label with part number 1069007

EXFO Fiber Scope Adapter U25MA for 2.5mm Ferrules APC FIPT-400-U25MA

Model: FIPT-400-U25MA

Manufacturer: EXFO

In stock: 1

SKU: 7001 6C02

Condition: Used

Price: Sale price £51.00

EXFO FIPT-400-SC-APC SC/APC bulkhead adapter tip, stainless steel, front view showing threaded base and barrel

EXFO FIPT-400-SC-APC adapter in sealed polybag with barcode label showing part number 1075437

EXFO Fiber Scope Adapter SC-APC Bulkhead FIPT-400-SC-APC

Model: FIPT-400-SC-APC

Manufacturer: EXFO

In stock: 1

SKU: 7002 6C02

Condition: Used

Price: Sale price £42.50

Keysight 87104D SP4T coaxial switch front view with Keysight label, 16-pin connector top, and 5 black port caps alongside

Keysight 87104D side view showing three 2.92 mm ports and ISO 17025 Z540.1 calibration label S/N MY55400952

Calibrated Keysight 87104D DC-40 GHz SP4T Coaxial Switch

Model: 87104D

Manufacturer: Agilent

In stock: 2

SKU: 3947 7E02

Condition: Refurbished

Price: Sale price £212.50

RS PRO Male N Type to Male N Type 2m RG214 50Ω coaxial cable coiled, showing full cable length

RS PRO RG214 coaxial cable close-up of N-type male connector, showing gold centre pin and knurled coupling nut

RS PRO Male N Type to Male N Type, 2m, RG214 Coaxial, Terminated50 Ω

Model: RG214

Manufacturer: RS PRO

In stock: 2

SKU: 3909 4D04

Condition: Used

Price: Sale price £34.00

Fairview FMC0222085-36 SMA to SMP 36-inch blue coax cable assembly with identification label and black SMP dust cap

Fairview FMC0222085-36 SMA male connector end close-up showing gold pin, stainless steel body and threaded coupling nut

Fairview FMC0222085-36 Cable Asembly SMA to SMP 50 Ohms 18 GHz 36''

Model: FMC0222085-36

Manufacturer: Fairview

In stock: 4

SKU: 3906 6D05

Condition: Used

Price: Sale price £34.00

Save £3,699.25

Heidelberg Engineering SPECTRALIS HRA+OCT full system setup with HP Z2 PC, NEC monitor, and mobile trolley

SPECTRALIS HRA+OCT module comparison chart showing standard and optional imaging modules across product variants

Heidelberg Engineering HRA + OCT Spectralis Optometry Imaging System w/ Software

Model: HRA + OCT Spectralis

Manufacturer: Heidelberg Engineering

In stock: 1

SKU: 7010 FL00

Condition: Used

Price: Sale price £15,295.75 Regular price £18,995.00

Keysight N6314A Type-N 50 ohm RF test port cable, full length view showing both male N-type connectors

Keysight N6314A Type-N male connector close-up showing gold centre pin and threaded coupling nut

Keysight N6314A Test Port Cable, Type-N, 50 ohm

Model: 8121-N6314A

Manufacturer: Keysight

In stock: 2

SKU: 3904 6D05

Condition: Used

Price: Sale price £127.50

Keysight 8121-1290 50GHz flexible RF cable assembly, full length view, purple braided jacket, 2.4mm connectors

Keysight 8121-1290 RF cable close-up of label showing part number 8121-1290 and serial number SN04459159

Keysight 50GHz Cable Assembly - RF, 50 GHz Flexible Cable

Model: 8121-1290

Manufacturer: Keysight

In stock: 1

SKU: 3905 6D05

Condition: Used

Price: Sale price £212.50

Keysight 8121-1072 50GHz flexible RF cable 36-inch 2.4mm f-m, full length overhead view on white background

Keysight 8121-1072 cable label close-up showing part number 8121-1072, W.L. Gore 3GW40, SN04224150

Keysight 50GHz Flexible cable 2.4mm(f)-(m) 36.0in 8121-1072

Model: 8121-1072

Manufacturer: Keysight

In stock: 1

SKU: 3903 7F02

Condition: Used

Price: Sale price £212.50

Rohde & Schwarz NRP-Z2 1146.6750.10 10-metre sensor extension cable coiled, showing both push-pull connectors

Rohde & Schwarz NRP-Z2 female push-pull multi-pin connector end with red orientation dot close-up

Rohde & Schwarz NRP-Z2 1146.6750.10 10 Meter sensor extension cable NRP-Zxx Seri

Model: NRP-Z2

Manufacturer: Rohde & Schwarz

In stock: 1

SKU: 3907 6D05

Condition: Used

Price: Sale price £106.25

Rohde & Schwarz NRP-Z2 1146.6750.05 5-metre sensor extension cable coiled on white background

NRP-Z2 1146.6750.05 push-pull connector close-up showing part number barcode label and strain relief

Rohde & Schwarz NRP-Z2 1146.6750.05 5 Meter sensor extension cable NRP-Zxx Serie

Model: NRP-Z2

Manufacturer: Rohde & Schwarz

In stock: 2

SKU: 3901 7F02

Condition: Used

Price: Sale price £80.75

Fairview SCE18110101-12 D SMA male-to-male LL142 coax cable assemblies — pair shown, green FEP jacket with black heat-shrink ends and dust caps

Fairview SCE18110101-12 D close-up of SMA male connectors with gold centre pins, stainless steel bodies, and black protective dust caps removed

Fairview SCE18110101-12 D SMA M to SMA M Cable LL142 Coax in 12'' with LF Solde

Model: SCE18110101-12

Manufacturer: Fairview

In stock: 6

SKU: 3898 4E04

Condition: Used

Price: Sale price £34.00

Fairview Microwave SCE18110101-36 SMA Male to SMA Male LL142 RF cable assembly, full length overhead view

Fairview Microwave SCE18110101-36 close-up of both SMA male connectors with branded black strain-relief boots

Fairview SCE18110101-36 Z

Model: SCE18110101-36

Manufacturer: Fairview

In stock: 1

SKU: 3900 7F02

Condition: Used

Price: Sale price £34.00

Keysight N4871A matched pair coaxial cables, both 91 cm units shown with red protective dust caps

Keysight N4871A cable label close-up showing part number N4871-61620, MFR 541Q2, SN12647546, Country of Origin USA

Keysight Technologies N4871A 3.5mm to 3.5mm Matched Pair Cable Kit

Model: N4871A

Manufacturer: Keysight Agilent

In stock: 2

SKU: 3897 4E04

Condition: Used

Price: Sale price £212.50

Keysight Agilent 85131F 3.5mm flexible test port cable full view with red and black connector caps

Agilent 85131F PSC-3.5mm female test port connector end face close-up showing gold-plated body

Keysight Agilent 85131F Flexible 85131-60013 3.5mm Test Port Cable DC-26.5GHz

Model: 85131F

Manufacturer: Keysight Agilent

In stock: 1

SKU: 3894 6F02

Condition: Used

Price: Sale price £250.75

Keysight N2823A 1m phase-matched coaxial cable pair coiled with red velcro tie and protective red end caps

Close-up of Keysight N2823A labels showing model number and serial numbers 2104003 and 2104004

Keysight Agilent N2823A Cable Assembly, Coaxial Phased-matched Pair, 1 m

Model: N2823A

Manufacturer: Keysight Agilent

In stock: 2

SKU: 3896 SF01

Condition: Used

Price: Sale price £2,120.75

Tektronix 174-1427-00 50 Ohm SMA(m) to SMA(m) coaxial cable assembly, full length coiled view

Tektronix 174-1427-00 coaxial cable close-up of part number label reading 174-1427-00

Tektronix 174-1427-00 Coaxial Cable Assembly, 50 Ohm, SMA(m) Both Ends, 20 L

Model: 174-1427-00

Manufacturer: Tektronix

In stock: 5

SKU: 3895 6F02

Condition: Used

Price: Sale price £34.00

TE Connectivity 6329823-1 50W RF dummy load angled view showing finned heatsink body and BeO caution label

TE Connectivity 6329823-1 RF dummy load angled view showing N-type male plug connector end and finned body

TE Connectivity 6329823-1 Coaxial Terminator N Type Dummy Load 50W 2 GHz

Model: 6329823-1

Manufacturer: Tyco Electronics

In stock: 1

SKU: 3388 6F03

Condition: Used

Price: Sale price £21.25

Viavi Trilithic Seeker HL Kit P/N 2011722000 with receiver, transmitter, carry case, cables and power adapters

Trilithic Seeker HL receiver front view with LCD display and Seeker HL Transmitter showing ON/OFF and OUTPUT LEVEL controls

Viavi Trilithic Seeker HL Receiver & Transmitter Kit

Model: HL Kit

Manufacturer: Viavi Trilithic

In stock: 1

SKU: 4072 4C01

Condition: Used

Price: Sale price £250.75

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

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

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

Model: OLA-55M

Manufacturer: Viavi JDSU

In stock: 2

SKU: 4029 6E05

Condition: Used

Price: Sale price £505.75

HP Agilent 8492A 10 dB APC-7 attenuator set of 3 with red carry case, overhead angle view

HP Agilent 8492A attenuator set stored in open red plastic carry case with 3-slot foam insert

Keysight Agilent 8492A 10 DB Coaxial Fixed Attenuator Set DC to 18GHz

Model: 8492A

Manufacturer: Keysight Agilent

In stock: 1

SKU: 3956 6G01

Condition: Used

Price: Sale price £106.25

EXFO FOT-930 MaxTester II optical loss tester with carry case, user guide, adaptor cap and mains charger

EXFO FOT-930 MaxTester II front view showing LCD display, keypad, FasTesT button and top-mounted ports

Calibrated EXFO FOT-930 MaxTester II Optical Loss Tester 1310/1550/1625 SM OLT

Model: FOT-932-4

Manufacturer: EXFO

In stock: 1

SKU: 4054 3B03

Condition: Refurbished

Price: Sale price £1,270.75

Calibrated EXFO FOT-930 MaxTester II Optical Loss Tester 1310/1550/1625 SM OLT

Calibrated EXFO FOT-930 MaxTester II Optical Loss Tester 1310/1550/1625 SM OLT

Calibrated EXFO FOT-930 MaxTester II Optical Loss Tester 1310/1550/1625 SM OLT

Model: FOT-932-4

Manufacturer: EXFO

In stock: 1

SKU: 4055 4F01

Condition: For parts or not working

Price: Sale price £845.75

Keysight 15432B 250ps Transition Time Converter — front label view showing model, spec, SMA connectors

Keysight 15432B rear label showing CE, ICES/NMB-001, ISM GRP 1-A markings and Keysight contact email

Keysight Agilent 15432B 250ps Transition Time Converter

Model: 15432B

Manufacturer: Keysight Agilent

In stock: 3

SKU: 3939 7D03

Condition: Used

Price: Sale price £165.75

Tektronix TCA-BNC adapter front view with gold BNC connector beside original instruction manual 071-0822-02

Tektronix TCA-BNC adapter angled left view showing BNC input, TekConnect output housing and locking button

Tektronix TCA-BNC Adapter TekConnect to TekProbe BNC DC to 4GHz 50 Ohm 0.25 dB

Model: TCA-BNC

Manufacturer: Tektronix

In stock: 1

SKU: 3951 6F04

Condition: New other (see details)

Price: Sale price £106.25

Keysight Y1701A Option 001 kit contents laid out: three semi-rigid cables, port caps, Rosenberger bag, and Quick Start Guide

Keysight Y1701A Opt 001 close-up of three P937xA semi-rigid SMA/SMB interconnect cables and four port protection caps

Keysight Agilent Y1701A Multiple USB Instruments Configuration Kit Opt 001

Model: Y1701A

Manufacturer: Keysight Agilent

In stock: 2

SKU: 3952 6F04

Condition: New other (see details)

Price: Sale price £63.75

Keysight Agilent 1250-1748 3.5mm male to male straight RF adapter, full side view showing gold body

Keysight Agilent 1250-1748 3.5mm male connector end-on view showing centre pin and gold-plated body

Keysight Agilent 1250-1748 Adapter 3.5mm (m) - 3.5mm (m) DC - 26.5 GHz Straight

Model: 1250-1748

Manufacturer: Keysight Agilent

In stock: 1

SKU: 3954 6G01

Condition: Used

Price: Sale price £106.25

Keysight 85052-60014 3.5mm male-to-male RF adapter standing upright, SN 89341 label visible, gold body

Keysight 85052-60014 3.5mm m-m adapter lying horizontally, both male connector ends visible, SN label shown

Keysight 85052-60014 3.5MM (m) to 3.5MM (m) Adapter

Model: 85052-60014

Manufacturer: Keysight Agilent

In stock: 1

SKU: 3965 7D04

Condition: Used

Price: Sale price £127.50

Keysight 11901A 2.4mm to 3.5mm adapter serial 14427 shown upright beside clear protective storage tube with red cap

Keysight Agilent 11901A 2.4 mm (m) to 3.5 mm (m) DC to 26.5 GHz

Model: 11901A

Manufacturer: Keysight Agilent

In stock: 2

SKU: 3970 7D04

Condition: Used

Price: Sale price £106.25

Viavi JDSU FCLT-U25 CleanBlast 2.5mm bulkhead cleaning tip front view showing nozzle and knurled collar

Viavi JDSU FCLT-U25 CleanBlast tip bottom view showing 6-hole ferrule contact face and O-ring seal

Viavi JDSU FCLT-U25 CleanBlast Tip for 2.5mm ferrules

Model: FCLT-U25

Manufacturer: Viavi JDSU

In stock: 1

SKU: 4025 4E03

Condition: Used

Price: Sale price £80.75

Agilent 85096C ECal module in open foam-padded wooden case with USB cable, TT Instruments label visible

Agilent 85096C Type-N 75 Ohm Electronic Calibration Kit wooden case exterior with model label

Agilent Keysight 85096C RF Electronic Cal Module Type-N 75 Ohm 300 kHz–3 GHz

Model: 85096-60009

Manufacturer: Keysight Agilent

In stock: 1

SKU: 3932 6D03

Condition: Used

Price: Sale price £845.75

Keysight CX1102A dual-channel current sensor kit in open hard carry case with foam, accessories and both sensor heads

Keysight CX1102A main sensor unit with cable and Primary and Secondary channel heads laid out flat

Keysight CX1102A Dual Channel Current Sensor 100MHz 1A For CX3324A Oscilloscope

Model:

Manufacturer: Keysight

In stock: 1

SKU: 3925 6D04

Condition: Used

Price: Sale price £1,695.75

Keysight 86112A-HBW 30 GHz dual-channel electrical module front panel, 3.5 mm 50 Ω inputs, probe power ports, calibration label

Keysight 86112A-HBW rear connector panel showing gold D-sub connector, serial number label MY55100498, Made in Malaysia

Keysight 86112A-HBW Dual Channel 30 GHz Electrical Module HBW 3.5 mm 50 Ohm

Model: 86112A-HBW

Manufacturer: Agilent Keysight

In stock: 1

SKU: 3929 6D03

Condition: Used

Price: Sale price £2,375.75

Agilent 86112A 20 GHz Dual Channel Electrical Module front panel, showing dual 3.5 mm 50 Ω inputs and probe power connectors

Agilent 86112A rear panel showing D-sub connector, model label 86112A CFG001 SER MY42510485, Made in Malaysia

Keysight Agilent 86112A Dual Channel 20 GHz Electrical Module 3.5 mm 50 Ohm

Model: 86112A

Manufacturer: Agilent Keysight

In stock: 1

SKU: 3930 6E03

Condition: Used

Price: Sale price £1,525.75

Keysight 11904S 2.4 mm to K adapter set open wooden case with 4 adapters, torque wrench and spanner

Keysight 11904S four 2.4 mm to 2.92 mm K adapters side view showing gold and silver bodies with serial numbers

Keysight Agilent 11904S 2.4 mm-2.92mm - K Adapter Set DC-40 GHz

Model: 11904S

Manufacturer: Keysight Agilent

In stock: 1

SKU: 3933 6D03

Condition: Used

Price: Sale price £930.75

Keysight Z5623A-K20-FG RF cable 36 inch with original Keysight Technologies box and anti-static bag

Keysight Z5623A-K20-FG 3.5mm RF cable 8121-0924 full length view showing purple woven jacket and both connectors

Keysight Z5623A-K20-FG 3.5 mm (m) to (m) RF Cable, 36 inches 8121-0924

Model: Z5623A-K20

Manufacturer: Keysight

In stock: 1

SKU: 3982 7D05

Condition: Used

Price: Sale price £85.00

Viavi P5000i fibre inspection probe with coiled USB cable, FBPT-MTP-L & U25M tips, dust cap and soft carry case

Viavi P5000i barrel assembly with FBPT-MTP-L MTP/MPO long-reach ribbon tip, FBPT-U25M patch cord tip and dust cap

Viavi P5000i Fiber Inspection Scope + FBPT-MTP-L & U25M Tips MM MPO MTP UPC

Model: P5000i

Manufacturer: Viavi JDSU

In stock: 1

SKU: 4024 6G03

Condition: Refurbished

Price: Sale price £637.50

Keysight N5440A 450Ω InfiniiMax III ceramic ZIF tips — closed protective carry case, top label view

Keysight N5440A 450Ω ceramic ZIF tips — open case showing 5 tips on carrier spork bar in foam tray

Keysight N5440A 450Ω N5440A InfiniiMax III 28 GHz Ceramic ZIF Tips use w/ N5439A

Model: N5440A

Manufacturer: Keysight

In stock: 2

SKU: 3980 5D02

Condition: New other (see details)

Price: Sale price £80.75

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