AFL Contractor Series – Optical Light Sources & Power Meters (OLTS)

The AFL Contractor Series is an economical, pocket-sized line of optical light sources (CSS1) and power meters (CSM1) for insertion loss measurement (OLTS) and certification of single-mode (SM) and multimode (MM) fiber links. Lightweight (0.29 kg), rugged tools with a 5-year warranty — ideal for field work.

  • Pocket-sized, rugged and reliable tools
  • OLTS kits for SM and MM links (CKS-3, CKM-3, CKSM-2)
  • CSM1 power meter: range up to +26/-70 dBm, 850–1625 nm calibration
  • CSS1-SM 1310/1550 nm laser source and CSS1-MM 850/1300 nm LED source
  • Test tones (270/330/1000/2000 Hz) for fiber identification
  • Insertion loss measurement and certification to industry standards
  • Best-in-industry 5-year warranty; 2× AA power

The AFL Contractor Series comprises rugged test instruments with a simple user interface, backed by a best-in-industry 5-year warranty. Both single-mode (SM) and multimode (MM) variants form complete OLTS kits for measuring link insertion loss, verifying continuity and identifying fiber before splicing. The pocket-sized, lightweight designs are ideal for the installer’s everyday field work.

CSM1 power meter

Four models provide a wide range of wavelengths and power levels. The meter stores optical references for each calibrated wavelength, automatically detects test tones used for fiber identification, and the input port accepts a variety of screw-on adapters (FC, SC, ST, LC, 2.5 mm, 1.25 mm). Models: CSM1-3 (single-mode measurements) and CSM1-4 (high-power single-mode measurements).

CSS1-SM laser source

The single-mode laser source emits 1310 nm and 1550 nm from a single test port. The output port accepts UCI screw-on adapters (FC, SC, ST, LC), providing flexibility and access to the launch fiber for cleaning and inspection. Class I laser.

CSS1-MM LED source

The multimode LED source emits 850 nm and 1300 nm from a single test port. Mandrels for 50 μm and 62.5 μm fiber are included. CSS1 sources transmit in CW (continuous wave) mode and emit test tones (2000, 1000, 330, 270 Hz) for fiber identification — power meters are used where the fiber end is accessible, and an OFI optical fiber identifier for in-span measurement.

OLTS kits and applications

Available test kits: CKS-3 (SM, 70 dB dynamic range @ 1310/1550 nm over 9/125 fiber), CKM-3 (MM, 40 dB @ 850/1300 nm over 62.5/125 fiber) and CKSM-2 (SM+MM). Typical applications include link insertion loss measurement, certification of SM and MM links to industry standards, and continuity checking and fiber identification before splicing. Test patch cords are required for operation (ordered separately).

Technical specification

CSM1-3 / CSM1-4 power meterInGaAs / filtered InGaAs detector
CSM1-3 calibrated wavelengths850, 1300, 1310, 1490, 1550, 1625 nm
CSM1-4 calibrated wavelengths850, 980, 1310, 1490, 1550, 1625 nm
Power measurement range+6 to -70 dBm (CSM1-3) / +26 to -50 dBm (CSM1-4)
Accuracy±0.15 dB (typ.), ±0.3 dB
Resolution / units0.01 dB / dB, dBm, μW
CSS1-SM sourceClass I laser; 1310 ±20 nm, 1550 ±20 nm; ≥0.0 dBm into 9/125
CSS1-MM sourceClass I LED; 850 ±20 nm, 1300 ±20 nm; ≥-20.0 dBm into 62.5/125
Output stability±0.05 dB/1 h, ±0.15 dB/8 h (SM)
Test tones2000, 1000, 330, 270 Hz
ConnectorsCSM1: most standards; CSS1-SM: SC/FC/ST/LC; CSS1-MM: SC
Power / operating time2× AA; CSM1 >300 h, CSS1-SM 75 h, CSS1-MM 30 h
Dimensions / weight11.4 × 6.4 × 3.2 cm (without boot) / 0.29 kg
Operating temperature-10 to +50 °C, 90% RH (non-condensing)

Ordering information

  • CKS-3-cc (cc = FC or SC) — single-mode OLTS kit (CSM1-3 + CSS1-SM)
  • CKM-3 — multimode OLTS kit (CSM1-3 + CSS1-MM), SC adapters
  • CKSM-2 — SM+MM OLTS kit (CSM1-3 + CSS1-SM + CSS1-MM), SC adapters
  • CSS1-SM-cc (cc = FC/SC/ST/LC) — single-mode laser source
  • CSS1-MM — multimode LED source (SC adapter)
  • CSM1-3-cc / CSM1-4-cc — InGaAs / high-power InGaAs power meter (cc = FC/SC/ST/LC/2.5 mm/1.25 mm)

Standards compliance: TIA-568.3-D, IEC 11801, EN 50173, AS/NZS 3080, TIA-526-7/-14, IEC 14763-3, IEC 61280-4-1/-2, IEC 60825-1, IEC 61315; CE, RoHS, FDA 21 CFR 1040.10/11.

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Product: AFL Contractor Series – Optical Light Sources & Power Meters (OLTS)