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CHAS Headend Amplifier System Product Description ®
CableServ's CHAS Headend Amplifier System has been designed with the flexibility, configurability and optimum density needed for a wide variety of applications in today's expanding CATV Headend. The modular systems approach enables broadband operators to mix and match power amplifier modules of different bandwidths and gains in a common rack mounted chassis. Hybrid equipped amplifier modules are constructed of solid aluminum extrusion specially engineered to provide high shielding, compactness, ease of installation and maintenance, and maximum heat dissipation without the need of cooling fans. The unique heat radiator design provides 18 square inches per Watt of dissipation ensuring that the amplifier circuitry remains reliably cooled even in a stacked rack configuration The amplifier chassis holds eight modules of any combination of Amplifier, Power Module or accessory module. The chassis mounts into standard 19" racking occupying only 3 Rack Units (5.25"), one of the most space efficient systems on the market today. NEBS Standard 23" mounting kits are available for both front and mid-rack installations. Automatic power source redundancy is incorporated in the chassis design which offers a variety of powering options including -48 VDC (30-85VDC) and 85-264VAC 50/60Hz. The optional +24 VDC Auxiliary Input Panel and Chassis enables the use of backup power. ® CableServ's CHAS A/B SWX RF Redundant Transfer Switch is an available accessory for automatic RF ® power redundancy between two CHAS amplifier modules or any two RF sources. An alarm Interface Chassis is available to output signals to headend ® alarm monitoring systems should any CHAS module lose power or when the Transfer Switch changes to Secondary input.
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CHAS Amplifiers are available in bandwidths from 5 MHz through 1000 MHz ensuring future network configuration flexibility. Hybrid technologies include Push-Pull, Power Double and GaAs, single and dual stage, in a variety of gains.
Applications • Multi-purpose Amplifier to 1000 MHz • • • •
Laser Driver Amplifier Isolation Amplifier Return Amplifier for all bandsplits IF and Narrow Band Amplifier
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Product Features 3 RU rack mount chassis system holds up to eight modules; Amplifier, Power Supply or Accessory. -48VDC option and Redundant Powering with automatic diode switching. Convection cooled for reliability without fans. Bandwidths from 5 to 1000 MHz. Easy access to Slope and Gain controls and -30dB Test point. LED’s for power. Various gains and bandwidths available. +24 VDC, Alarm Interface and NEBS 23” Chassis. Full 24 Month Limited Warranty.
ProductSpecifications Product specifications are available for the following models which are produced in Power Doubled (PHD), Push-Pull (PP) and Gallium Arsenide(GaAs) technologies. Models are single (S) or dual (D) stage hybrid with specified bandwidth, technology and gain (dB) including 0 dB Isolation (I).
Powering Options Amplifiers may be powered from chassis mounted Power Modules or from a separate master supply. Each chassis will accept multiple (redundant) Power Modules which are available in the following voltage input ranges: 85 - 264VAC for North American and European Mains Operation & -- 48VDC for TELCO operation When any two or more power sources are connected or installed in a chassis, they automatically operate in a redundant mode. Diode switching ensures zero transfer time. The optional CHAS +24 VDC Auxiliary Input Chassis enables the use of backup power.
Order Information CHAS® HEADEND AMPLIFIER SYSTEM CHAS® CHASSIS MODEL CHAS-ALARM CHAS-CHASS CHAS-NETS CHAS-24AUX CHAS-24PNL CHAS-PD-3585 CHAS-PM-8526 CHAS-862-432D CHAS-862-436D CHAS-862-428D CHAS-862-416S CHAS-862-420S CHAS-862-400S CHAS-862-318S CHAS-1000-422S CHAS-1000-418S CHAS-050-228S CHAS-065-222S CHAS-200-222S CHAS-A/B-CCK CHAS-DLS-SWX
PART NUM BER 824-700-037-0CE 824-700-027-0CE 824-700-038-0CE 824-700-041-0CE 824-700-033-0CE
DESCRIPTION CHAS 8 MOD CHASSIS W /ALARM INTRFACE CHAS 8 MODULE CHASSIS CHAS 23" FRONT PANEL EXTENSION KIT CHAS 8 MOD CHASSIS W /24VD C AUX PANL CHAS 24VDC AUX'LY INPUT PANEL CHAS® POWER SUPPLY 824-700-025-0CE CHAS POW ER SUPPLY 35-85VDC 824-700-028-0CE CHAS POW R SPLY 85-260VAC MAINS MNW L CHAS® FORWARD AMPLIFIERS 824-700-023-0CE CHAS DUAL HYB 862M Hz GAAS 32dB AMP 824-700-024-0CE CHAS DUAL HYB 862M Hz GAAS 36dB AMP 824-700-022-0CE CHAS DUAL STG 870MHZ T/GAAS 28dB 824-700-029-0CE CHAS SGL HYB 862MHZ GAAS 16DB AMP 824-700-009-0CE CHAS SGL HYB 862MHz GAAS 20dB AMP 824-700-036-0CE CHAS SGL HYB 862MHZ GAS 0DB ISO AMP 824-700-008-0CE CHAS SGL HYB 862MHz PHD 18DB AMP 824-703-200-0CE CHAS SINGLE HYB 1GHZ GAAS 22DB A MP 824-703-201-0CE CHAS SINGLE HYB 1GHZ GAAS 18DB A MP CHAS® RETURN A MPLIFIERS 824-700-030-0CE CHAS SGL HYB 50M Hz PP 28DB AMP 824-700-066-0CE CHAS SGL HYB 65M HZ PP 22DB AMP 824-700-002-0CE CHAS SINGLE HYB 200MHZ PP 22DB AMP CHAS® REDUNDANT SW ITCH 824-700-039-0CE CHAS A/B SWX CONTACT CLOSURE KIT A 824-704-750-0CE CHAS DUAL SENSE REDU NDAN T SW ITCH
Additional amplifier bandwidths and gains are available. Please discuss your needs with your CableServ Account Manager at the address below . They can provide you with a complete listing of CableServ Headend Amplifier solutions, specifications, options, part numbers and pricing.
CableServ Inc. 4560 Eastgate Parkway Mississauga, Ontario, Canada L4W 3W6 Telephone: (905) 629-1111 Fax: (905) 629-1115 Toll Free: 800-668-2033 E-mail to:
[email protected] Visit us at www.cableserv.com cssh0016 6/02 REV 3 Printed in Canada
