| BRSA
Return Amplifier Trim Adjustments |
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The
BRSA return amplifier is used in the Scientific-Atlanta trunk amplifier
housing for systems of 550 MHz and below. The block diagram
of the BRSA circuitry is printed on the module lid for easy reference.
The BRSA frequency response network is visible in the photo below
showing the internal components. The animated GIF files below
depict the effects of the response network controls.
Broadband International, Inc.
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Mouse
over an area of the picture to display the corresponding plot and description.
The
range of all the network analyzer traces below is 0.3 MHz to 50 MHz.
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| PRODUCT
MODEL BRSA |
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| Specifications |
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| PARAMETERS |
UNITS |
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NOTES |
| Technology |
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Hybrid |
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| Passband |
Mhz |
5-42 |
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| Gain |
dB |
16 |
1 |
| Frequency
Response |
dB |
+/-.15 |
1 |
| Station
Tilt |
dB |
0 |
1 |
| Return
Loss |
dB |
18 |
1 |
| DISTORTIONS
AT RATED OUTPUT |
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| Rated
at Output Levels |
dB |
32 |
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| Number
of Channels |
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6 |
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| Composite
Triple Beat |
dB |
102 |
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| Crossmodulation |
dB |
96 |
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| Second
Order Distortion |
dB |
84 |
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| Noise
Figure |
dB |
11 |
1 |
| Current
Consumption @24 V dc |
Amps |
0.135 |
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| Test
Points +/- .5 dB |
dB |
-20 |
1 |
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| OEM P.N. |
BBI P.N. |
Values |
| 372741 | 243025 | 30MHz | | | 244025 | 40MHz |
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