Product
1550NM EXTERNAL MODULATION OPTICAL TRANSMITTER





product description:

GSDT-8500 external modulation optical transmitter product is a new high performance 1550nm externally modulated CATV optical transmitter. The main device is JDUS, Fujitsu, MITSUBISHI thermoelectric cooler containing the DFB low noise, narrow linewidth, continuous wave laser and JDUS, AVANEXCATV high linear external modulator. Since my company system optimization control technology, SMNP network control technology, the machine"s technical performance indicators fully meet standards similar imported equipment for cable television and telephone communications, to provide high-quality image, digital, or compressed digital signal long-distance transmission.


Features:

LCD panel displays the operating parameters window.

Original system optimization control technology, RF pre-distortion technology in ensuring the excellent performance of the system CNR maximum of CTB, CSO and SBS indicators.

Redeployment of the phase modulation technique to ensure the system is excellent in the case of CSO performance, maximizes the optical power into the fiber in order to obtain long-distance transmission, and field adjustable SBS threshold 13,16,18, applicable to different network transmission .

Built-in high-performance dual switching power supply, hot backup in 85~265Vac City Network Voltage, MS-level automatic switching.

Chassis cooling automatic temperature control.

Option status monitoring transponder guarantee to meet the national standard and be compatible with the SCTE HMS standards, enabling network monitoring capabilities.


Technical Parameters:

project

unit

Performance parameters

Optical wavelength

nm

1550±10

Light Modulation

 

External modulation

Optical output power

dBm

5-10 (optional 1 or 2 outputs)

SBS threshold

dBm

13,16,18 Optional

Optical Connector Style

 

FC / APC, SC / APC optional

Frequency Range

MHz

47~862(1003)

CNR

dB

≥52.0

flatness

dB

±0.75

RF input signal level

dBuV

75 ~ 85 (AGC function)

A combination of third order beat ratio carrier (C / CTB)

dB

≥65.0

Carrier combination of second order beat ratio (C / CSO)

dB

≥65.0

RF input return loss

dB

>16(47~862)MHz,
>14(862~1003)MHz

powered by

V

90~265市电

Power

W

≤50

Size

 

19″×11″×1.75″

Network management interface

 

RJ45, browser and SNMP support

Note:
1) Under the provisions of link loss condition, the configuration 59 PAL-D analog TV channel signal in the 550MHz frequency range, within the MHz frequency range transmission of digital modulation signals, digital modulation signal level at 550MHz ~ 750 (862) (internal 8MHz bandwidth) lower than the carrier level of the analog signal 10dB, optical receiver input optical rate when 0dBm, measured third order beat ratio carrier combination (C / CTB), a carrier combination of second order beat ratio (C / CSO) and carrier to noise ratio (C / N).
2) fiber 50KM + EDFA.

Ordering guide:

GSDT-85

0

0

-0

GSD External modulated light hair model

1: one output
2: Two-way output

5-10: 5-10dBm output

FC: FC / APC connector
SC: SC / APC Interface