SJ-4B

Query


1.0 GHz SJ-4B Step Variable Attenuators produce flat (even) loss across Cable TV forward and reverse frequency band. The attenuators are used during amplifier balancing to adjust amplifier signal levels as needed. The step variable loss produced (dB) is between 0 dB to 2.5, 5, 10, 15 dB base on the step. The attenuators are rated for operation up to 1.0 GHz. Within specific amplifier types, the attenuators are also used as equalizers. 






Item

Units

Value

 Attenuation Values

dB

0 – 2.5

0 - 5

0 - 10

0 – 15

 Step Value

dB

0.5

1

2

3

 Frequency

MHz

0 - 1000

 Tolerance at 5 MHz

dB

0.2

 Flatness

dB

± 1.0

 Return Loss

dB

12.0

 Impedance

75

 

Note: Unless otherwise noted, all specifications reflect typical performance and are referenced to 68°F (20°C). Specifications are based upon measurements made in accordance with SCTE/ANSI standards (where applicable), using standard frequency assignments.

Dimensions

Shaft Size

Shaft diameter Ф( mm )

Shaft length  L ( mm )

5

0, 5, 10



SJ-4B-0.5dB Step - Value 0 - 2.5 dB

SJ-4B-1dB Step - Value 0 - 5 dB

SJ-4B-2dB Step - Value 0 - 10 dB

SJ-4B-3dB Step - Value 0 - 15 dB


About Us

Shanghai Qianjin Electronic equipment Co., LTD was founded in 1991. It is a scale and specialized CATV equipment manufacturer with research, development and production. Our company has been identified as high-tech enterprises, strict compliance with international standards and pass GB / T 9001 quality management system certification.

Our good reputation and perfect product service system has won praise from customers. Products are sold to Europe, America, Asia and other countries and regions, as OEM / ODM supplier.



Contact

   Address: 4/F,Budliding No.2,401 Caobao Road Shanghai China

   Phone: 021-54973555

   Email: sales@sq-cabledevice.com