For short fiber distance applications use optical attenuators

4 Be sure the optical output power is not more than (-7dbm)

4. Insert the connector into the receptacle of the SC/APC adapter.

5. If the difference of two values is obvious, clean the end of the connector with a

lint free tissue moistened with 99.99% alcohol.

6. Power on, the Power Indicating Lamp lit red when the power is normal.

Otherwise, turn off the power immediately (and so on in the abnormal power in the

future), and contact with supplier.

This machine should be safely ground.

Link testing conditions

The performance parameters of this manual according to the measuring method

of GY/T 194-2003 < Specifications and methods of measurement on optical node

used in CATV systems >, and tested in the following conditions.

Test conditions:

1. Forward optical receive part: with 10km standard optical fiber, passive optical

attenuator and standard optical transmitter composed the testing link. Set 59

analog TV channel signal at range of 45/87MHz

～550MHz under the specified

link loss. Transmit digital modulation signal at range of 550MHz

～862/1003MHz,

the digital modulation signal level (in 8 MHz bandwidth) is 10dB lower than analog

signal carrier level. When the input optical power of optical receiver is -2dBm, the

RF output level is

108dBμV, with 9dB output tilt, measure the C/CTB, C/CSO and

C/N.

Chart

“Optical Input Power vs Voltage vs Output

O.Input Power

(mW/dBm)

Voltage

(V)

Output Level (dBµV)

Standard

Maximum

2.00/3.0

4.00

102

104

1.58/2.0

3.16

100

102

1.26/1.0

2.52

98

100

1.00/0.0

2.00

96

98

0.79/-1.0

1.58

94

96

0.63/-2.0

1.26

92

94

0.50/-3.0

1.00

90

92

0.40/-4.0

0.80

88

90

0.32/-5.0

0.64

86

88

0.25/-6.0

0.50

84

86