Pin	Standar T568B (Umum)	Standar T568A	Fungsi Sinyal	PoE Mode A (Endspan)	PoE Mode B (Midspan/Passive)
Pin 1	White-Orange	White-Green	BI_DA+ (TX+)	DC+ (48V)	Data Only
Pin 2	Orange	Green	BI_DA- (TX-)	DC+ (48V)	Data Only
Pin 3	White-Green	White-Orange	BI_DB+ (RX+)	DC- (GND)	Data Only
Pin 4	Blue	Blue	BI_DC+ (1000BASE-T)	Data	DC+ (48V Passive/Mode B)
Pin 5	White-Blue	White-Blue	BI_DC- (1000BASE-T)	Data	DC+ (48V Passive/Mode B)
Pin 6	Green	Orange	BI_DB- (RX-)	DC- (GND)	Data Only
Pin 7	White-Brown	White-Brown	BI_DD+ (1000BASE-T)	Data	DC- (GND Passive/Mode B)
Pin 8	Brown	Brown	BI_DD- (1000BASE-T)	Data	DC- (GND Passive/Mode B)

● network1:4 = 7.3 dB • 1:8 = 10.5 dB • 1:16 = 13.8 dB (Safe ONT Rx: -15 to -25 dBm)

GPON / EPON PLC Optical Splitter Loss Table (1:2, 1:4, 1:8, 1:16, 1:32) & FTTH Power Budget

Complete PLC optical splitter insertion loss chart: 1:2 (3.7 dB), 1:4 (7.3 dB), 1:8 (10.5 dB), 1:16 (13.8 dB) for GPON/EPON FTTH networks.

⚡ Instant Calculated Answer

1:4 = 7.3 dB • 1:8 = 10.5 dB • 1:16 = 13.8 dB (Safe ONT Rx: -15 to -25 dBm)

⚡Open Full Interactive Calculator (gpon-ftth-splitter-cascade-calculator) →

📊Reference Table & Engineering Specs

Parameter / Metric	Specification Value
1:2 PLC Splitter Loss	3.7 dB
1:4 PLC Splitter Loss	7.3 dB
1:8 PLC Splitter Loss	10.5 dB
1:16 PLC Splitter Loss	13.8 dB
1:32 PLC Splitter Loss	17.0 dB
Cascaded 1:8 + 1:8 Loss	21.0 dB (+ redaman kabel & konektor ~1.5 dB = ~22.5 dB)
Ideal ONT Rx Optical Power	-15.0 dBm s/d -24.5 dBm (Batas LOS: -27 dBm)

📖Technical Explanation & Methodology

In GPON/EPON FTTH networks, cascading a 1:8 ODC splitter with a 1:8 ODP splitter introduces 21 dB of splitter loss. With a +4 dBm OLT SFP, ONT receive power sits safely around -18.5 dBm.