Reference

Field Standards

Universal acceptance criteria, thresholds, and loss values that apply to all ticket types — Reactive, MW, and Planned. Know these numbers cold.

Low Light Thresholds

Receive power thresholds measured at the NIU. If the reading drops below the threshold for the technology type, the link is classified as low light and must be investigated. These apply to all work types.

GPON

-22.0dBm

1490 nm · VeEX

Example path

SAT145e:SAT148d-N102:N103a-N203a

XGS-PON

-22.0dBm

1577 nm · VeEX

Example path

SAT121d-N102d-N202

Go-Long

-28.0dBm

1550 nm · OPM

Example path

SAT103-AWG05-N208b

Splice & Connector Standards

Acceptance criteria for every fusion splice and connector — whether it's a reactive repair, MW job, or planned re-splice.

Individual Splice Loss

≤ 0.02 dB

Per splice, displayed on fusion splicer screen

Bi-directional Mean Loss

< 0.1 dB

OTDR measured, averaged both directions per closure

Max Insertion Loss

≤ 0.5 dB

Per mated connector pair

Reflectance (APC)

≤ -60 dB

Angled physical contact connectors

Reflectance (UPC)

≤ -40 dB

Ultra physical contact connectors

Splice Data Logging

Required

All splice attenuation must be logged and available for engineer review

Fiber Attenuation by Wavelength

Standard loss values for G.652D single-mode fiber. Use these for loss budget calculations.

Wavelength	Attenuation	Primary Use
1310 nm	0.35 dB/km	GPON upstream, general SM testing
1490 nm	0.30 dB/km	GPON downstream
1550 nm	0.22 dB/km	Go-Long, OTDR testing
1577 nm	0.30 dB/km	XGS-PON downstream
1270 nm	0.40 dB/km	XGS-PON upstream