HFC-Product-GSD Information Technology Co., Ltd

OPTICAL WORKSTATION

product description:

GSON600 Workstations for two-way HFC FTTB engineering applications, the last stage uses GaAs module output, with four high-output, can greatly reduce equipment and customer premises optical node between, improve the reliability of the network, directly to the 400 ~ 500 users with high index signals. And the unit is equipped with state monitoring interface that can monitor the machine/s operating voltage, current, optical received power, optical transmission power, the group transform voltage, radio frequency and other parameters indicators. And reverse channels -6dB, all-pass, remote setting off three states.

Features:

Efficient switching power supply. Enter an optional power supply AC220V, 60V. Centralized power supply with a 60V input port;

Wild-type chassis, excellent water resistance and electromagnetic shielding performance;

Optical AGC function, the input optical power -8 ~ + when 2dBm, the output level constant;

Low optical power receiving input optical power to ensure the machine performance when -5dBm;

10 LED display rows of lights, displays the current input optical power, 1dBm step;

Each port has lightning and surge voltage protection;

With a variety of output types, optional independent, bridges and distribution output;

Balanced inserts and attenuators common, both British attenuator, convenient debugging;

Optional Installation Class I or Class II network management responder, remote monitoring equipment operation.

Technical Parameters：
Optical workstation performance parameters of the forward path optical receiver

project	unit	Performance parameters
Input optical power range	dBm	-6~+1
Operating wavelength	nm	1290~1600
Optical Return Loss	dB	≥45
flatness	dB	±0.75
Output Level	dBuV	4 outputs ≥108
C/N	dB	≥51
CTB	dBc	≥65
CSO	dBc	≥61
Frequency Range	MHz	85-862（1003）
Optical Connector Style		FC/APC
RF output impedance	Ω	75
RF output return loss	dB	≥16(47-862 MHz), ≥14(862-1003 MHz)
Dimensions	mm	GSON600D：350(L)210(W)170(H) >GSON600C：280(L)230(W)110(H)

RF amplification optical workstation performance parameters

project	unit	Performance parameters
project	unit	Forward	Reverse
bandwidth	MHz	47/87—750/862	5—30/65
flatness	dB	±0.75	±0.75
Return Loss	dB	≥16(47—862MHz)	≥16
Minimum full gain	dB	≥26	17—24
Noise factor	dB	≤10	≤14
CTB	dB	≥68 (silicon power doubler) ≥76 (GaAs)	≥78 (6-way CW carrier)
CSO	dB	≥68 (silicon power doubler) ≥74 (GaAs)	≥73 (6-way CW carrier)
Detecting port	dB	-20±1.5	-20±1.5
Note: 1, RF amplification of nonlinear index is within the 550MHz frequency range, configuration 59 Road PLA-D channel, so that the port RF output level 108dBuV, tilt the worst value in the state when the test result of 12dB 862MHz bandwidth. 2, the entire distortion indicator light station depends on the optical transmitter and optical receiver unit and the RF amplification of the entire link.

Reverse transmission performance parameters

project	unit	Performance parameters	Remark
Optical wavelength	nm	1310±20
Optical power	mW	1∽3	Mitsubishi
Return Loss	dB	≥16
flatness	dB	±0.75
Frequency Range	MHz	5-65
Standard gain	dB	25
Hum than signal	%	<2
Recommended RF input level	dBuV	75	Optimum operating point
The optical connector form		FC/APC	Optional SC / UPC
Noise Power Ratio (NPR) Dynamic Range	dB	≥15(NPR≥30dB)	Link index finger upstream optical transmitter and upstream optical receiver and other components
Note: 1, four signal method, 19,25,31 MHz; 2, two signal method, 13,19MHz; 3, tested using standard receiver, 10dB link loss.

Optical Workstation System Specifications

project	unit	System characteristics Index
C/N	dB	51
CTB	dBc	65
CSO	dBc	61
Link flatness	dB	±0.75
Total power consumption	W	≤60
NOTE: The standard transmitter, the input optical power -1dBm, PAL-D path 59 is configured in the 550MHz range channels, RF output signal inclined 6dB (862MHz), the output level is 104dBuV (GaAs 108dBuV) test.

Ordering Guide：

GSON600	0	0	0	0
GSD Field type optical workstation	D: 4 independent outputs C: 4-way distribution outputs	8: 862 MHz Bandwidth 1: 1GHz Bandwidth	F: FP laser D: DFB lasers	FC:FC/APC SC:SC/APC

Failure Analysis:
1, the optical power receiving indicator red normal, steady light power is low or no optical power is detected as follows:
Optical connectors match.
Be careful with cotton and absolute alcohol to clean the fiber optic connector end faces, to be dry before connecting to the unit.
Optical power meter to check the output optical power, confirm whether or between -6 ~ + 2dBm look directly received optical power display.
2, in the optical power of normal conditions, signal quality is poor, check the output level is too high or too low, if the debugger for debugging.
3, when the power light is off, check the power supply is normal, and then check the fuse is blown.
4, reverse light hair module with optical power indicator (green normal), and can use a multimeter to test the reverse light emitted light power and bias current, typically optical power monitoring of 1v / mw, the bias current of 50mA / 1v If the light indicating normal power, received optical power and optical node abnormalities, make sure:
Optical connectors match.
Be careful with cotton and absolute alcohol to clean the fiber optic connector end faces, to be dry before connecting to the unit.