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Service Bypass

Service Bypass

Service Power Interface with RF Connection

Service Bypass
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Alpha extends it’s service power inserter family to include the SPI-RF, designed to connect the system power supply and DOCSIS network monitoring device. The SPI-RF includes an RF port allowing connection of the transponder to the cable plant inside Alpha’s enclosures instead of placing a drop into the enclosure. This eliminates the need to have a drop placement of line passive and the associate cost for installation labor. This unit can be confi gured into Alpha’s PWE, UPE and PN Series enclosures. Also, the SPI-RF can be removed or replaced without removal of the main cable entry assembly. An auxiliary power connection and transfer switch enables system AC power connection from a mobile source during power outages or power supply maintenance. A LED indicates the presence of primary power, and a test point provides for fast measurement of AC voltage.

  • Single network interconnect for power and DOCSIS RF monitoring signals
  • RF attenuation control with SXP Pad
  • -110 dBC EMI shielded cast aluminum package
  • AC test points
  • “ALT/ON” switch for Service Power Supply
  • 24 month warranty

Variants Technical data


Specifications
Part Number: 021-072-10 Status Monitor Power Supply
Model Number: SPI-RF Interface Module
Parameter  
Passband: 5 to 862MHz
Flatness: ±0.5dB

Through Loss:
 
@862MHz <1.25dB
@5MHz <0.5dB

Manual Control
 
SXP PAD: 0 to 20dB

Return Loss
 
Input: 16dB
Output: 16dB
AC Input Voltage: 30 to 90Vac
AC Bypass Current (Max): 20A
HUM Modulation @ 15A -70dBc
EMI: -110dBc
Weight: lb/kg 1.25/ 0.83
Dimensions
(in):
(mm):

8.25L x 4.00W x 1.20H
209.55 x 101.60 x 30.48
Operating Temperature: -40 to 131° F
-40 to 55°C
SPI Placement Application Notes
Alpha Enclosure Model Max. Number of SPI
PWE-3/6: 2 positions available
PWE-4/8: 2 positions available
UPE-3: 2 positions available
PN-3: 2 positions available per tray