GDRT-3 Optical Node (FTTH)

Detailed Product Description

Indoor Node

GDRT-3

Function and Features:

1. Includes a forward optical receiver with RF out and a reverse path optical transmitter.
2. Forward path frequency range: 53~1000MHz.
3. Reverse path frequency range: 5~42MHz.
4. SC/APC connector for fiber in (forward) and fiber out (reverse).
5. RF output 25dBmV on 75Ω F-connector.
6. Excellent linearity.
7. Extremely low return losses.
8. Extremely good flatness.
9. Low power consumption.
10. Operating with either internal 120VAC supply or external coax powering of 12~15 VDC.

Technical Indicator

No.	Item	Unit	Condition	Min.	Type	Max.
Downstream Receiver
1	Optical Wavelength	nm		1290		1600
2	Monitoring Voltage	V/mW			1
3	Input Optical Power	dBm	f	-6	1	3
4	Frequency Range	MHZ		53		1000
5	Flatness	dB	f=53-1000MHZ	-	±0.5
6	Output Return Loss	dB	f=53-1000MHZ	16	18	-
7	Output Level	dBmv	NOTE2		25
8	Optical Input Return Loss	dB		45	-	-
9	CTB	dB	99chs flat			-61
10	CSO	dB	859.25MHZ			-60
11	Equivalent Noise Input	pA/hz	55MHZ	-	-	7
Upstream transmitter
12	Optical Wavelength	nm		1290	1310	1330
13	Output Optical Power	dBm		0.5	1	3
14	Voltage Detection	V/mW	1310		1
15	Input Level	dBmv			15
16	Frequency Range	MHZ		5		42
17	Flatness	dB	f=542MHZ	-	±0.5
18	Input Return Loss	dB	F=542MHZ	16	18	-
19	Optical Output Return Loss	dB		45	-	-

NOTE2:Three frequency modulation testeach laser with 40% modulation index.

Fp=326.25MHz          Pp=0.33mW

Fp333.25MHz        Pp=0.33mW

Fr=335.25MHz           Pr=0.33mW

Measurementfq+fp-fr=324.25MHz