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 MB750 Upgrade to 870 MHz

 

 

 

  

 

Specifications in Housing

 

Parameter

Test Conditions

Units

Notes

Forward

Reverse

 

Technology

-

-

-

GaAs FET PD

Silicon

 

Bandwidth

-

MHz

-

54-750

5-40

 

Response Flatness

-

dB

-

+/-0.5

+/-0.5

 

Minimum Full Gain

-

dB

1

43

20/25

 

Operational Gain

-

dB

-

41

20

 

Slope

Cable Equivalent

dB

 

10

0

 

 

 

 

 

 

 

 

Input Test Points

-

dB

-

-20 +/-0.75

-20 +/-1

 

Output Test Points

-

dB

4

-20 +/-0.75

External on housing

 

Input Return Loss

Freq

5-40 MHz

dB

 2

-

15

 

54-750 MHz

16

 

Output Return Loss

Freq

5-40 MHz

dB

 

-

15

 

54-750 MHz

16

 

Loop Isolation

-

dB

-

> -30

 

DC Current Draw (max)

-

mA

-

800

 

AC Current Draw (max)

90 VAC

mA

-

274

 

60 VAC

398

 

50  VAC

482

 

40  VAC

624

 

Noise Figure

-

dB

-

6

4.5

 

Distortion Measurements @ rated loading 

 

Reference Frequencies

-

MHz

 

55/550/750

T7-T12

 

Output Levels

-

dBmV

-

38/48/51

36

 

Channel Loading

-

NTSC

3

77 + 33 digital

4 Channel

 

Composite Triple Beat

-

dBc

-

65

86

 

Composite Second Order

 

dBc

-

67

86

 

Carrier to Noise

 

dB

-

 60

 74

 

Cross Modulation

 

dBc

-

69

84

 

 

 

 

 

 

 

 

 
                 

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Notes:

1.                   Factory alignment with 10dB cable equivalent, 3 dB of Interstage pad and 30 dB of flat gain.  Gain dependant on reverse hybrid selection.

2.                   All return loss measurements made with 0 dB pads and a  #18 gauge wire jumpers in place of the equalizers.

3.                   Distortion measurements made with 77 analog channels and 33 digital channels running 6 dB down from an analog equivalent. 

4.                   Resistive -20 dB test points on the housing

 

4CLE97 Sweep and Input Return Loss

Available now from stock to 4 weeks

 

 

Contact:           4Cable TV Inc.                                  843-365-4938

4254 Highway 501 West

Conway SC 29526

www.4cable.tv                         sales@4cable.tv