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Optical equipment for cable TV

Optical transmitter ARCOTEL WT86xxC

6
 

Description:

Optical transmitter is intended to transfer cable television signals through optical fiber. It is equipped with a high-stable   cooled DFB laser made in USA .Structurally it is made in a form of unit in height 1U under installation into the 19" rack and has buit-in supply unit. It is controlled by microprocessor with the possibility of installation of notification thresholds at underrating or uprating of transmitter working parameters, setting of the parameter of transmitted signals quantity, automatic or manual adjustment of the RF signal level transmitted to the laser, and possibility of remote monitoring of main parameters of the transmitter by means of SNMP network protocol.

The front panel of the transmitter consists of the following elements:

  • digital indicator  of working modes control . Depending on the indication mode, it can give an information about output optical power, laser temperature, laser current, or coolant current etc.
  • F socket of the test point of the input RF signal;
  • laser switch lock;
  • control buttons;
  • LED indicators of work modes.

The rear panel of the transmitter consists of the following elements:

  • Input socket of a RF signal;
  • LAN interface for network monitoring;
  • Output optical connector;
  • Socket of connection of mains supply cable;
  • RS232 port

Main technical characteristics:

Name

Value

Input frequency range

47-862 MHz

Input RF signal level

80 dBmkV

CTB distortions at 84 channels PAL not worse

-65 dB

CSO distortions at 84 channels PAL not worse

-60 dB

Range of manual adjustment of the input signal

± 8 dB

Range of adjustment of AGC system

± 8 dB

C/N ratio (C/N, at -1dBm at input)

51 dB

Unevenness of amplitude-frequency characteristic

± 0.75 dB

Input resistance

75 Ohm

Output optical power (depending on model)

4(6dBm); 6(7.dBm); 8(9dBm); 10(10dBm); 12(10.8dBm); 14(11.5dBm); 16(12 dBm); 20(13dBm); 22(13.4dBm); 24(13.8dBm); 28(14.5dBm) mW

Wave working length

1310 nm

Optical connector type

SC/APC

Supply voltage, consumed power

220 V, 40 W

Dimensions, weight

482?380?44 mm, 4 kg

Working temperature range

0° ÷ +50 °С

 

Parameter dependency C/N from losses in the optical line for optics ARCOTEL:

Optical loss (дБ)

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

WT8604

53.8

52.8

51.8

51.0

50.1

49.2

48.2

 

 

 

 

 

 

 

 

 

WT8606

 

 

 

53.0

52.0

51.0

50.1

49.1

48.1

 

 

 

 

 

 

 

WT8608

 

 

 

 

52.8

51.9

51.0

50.1

49.2

48.2

 

 

 

 

 

 

WT8610

 

 

 

 

 

52.9

51.9

51.0

50.1

49.1

48.2

 

 

 

 

 

WT8612

 

 

 

 

 

 

52.7

51.8

50.8

49.9

49.0

48.0

 

 

 

 

WT8614

 

 

 

 

 

 

 

52.4

51.5

50.5

49.5

48.6

47.8

 

 

 

WT8616

 

 

 

 

 

 

 

 

52.0

51.0

 50.1

49.1

48.1

 

 

 

WT8618

 

 

 

 

 

 

 

 

52.5

51.6

50.6

49.7

48.7

47.9

 

 

WT8620

 

 

 

 

 

 

 

 

 

51.9

51.0

50.0

49.0

48.0

 

 

WT8622

 

 

 

 

 

 

 

 

 

52.2

51.4

50.4

49.4

48.6

47.8

 

WT8624

 

 

 

 

 

 

 

 

 

 

51.5

50.3

49.2

48.5

47.7

 

WT8626

 

 

 

 

 

 

 

 

 

 

51.5

50.2

49.2

48.5

47.6

 

WT8628

 

 

 

 

 

 

 

 

 

 

52.4

51.5

50.5

49.5

48.6

47.8