Pico Macom C860 User manual

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Broadband 5-1000 MHz
Broadcast quality specifications for
unparalleled picture quality
Sub-band output port provides high isolation
VHF/UHF ingress-free return path for CMTS
and remote audio/video application
>18 dB return loss provides reduced
reflections for exceptional digital
signal performance
Directional coupler design provides
improved carrier-to-noise, system
performance and picture quality
High -50 dB port to port isolation provides
spurious carrier rejection and minimizes
undesired channel interaction, thereby
reducing picture distortion
Passive design allows bi-directional
flexibility for two-way digital and
analog requirements
Plug-in equalizers and attenuators
(included) enable uniform gain and slope
system balancing for minimum distortion
-20 dB test port provides convenient
access for headend testing and
system monitoring
C860
The MACOM C860 is a professional re-broadcast grade, rack-mounted, high isolation, passive headend signal combiner
available in a 24-channel configuration. This unit combines the outputs from multiple modulators and processors into a single
common broadband output. The high quality directional coupler design enables high isolation between input ports, providing
minimum interaction between digital and/or analog input sources. Plug-in equalizers and attenuators provide system balancing
capability and a high isolation sub-band output port for return path applications further enhance the versatility of this combiner. The
C860 combiner makes it ideally suited for bi-directional applications, such as cable modems, remote audio/video origination or
other applications where remote signal origination is returned to the headend. The MACOM line is backed by an industry lead-
ing 5-year limited warranty.
Bi-Directional Combiner

www.picomacom.com 9
C860
Product Specifications
Front Panel
Rear Panel
RF Input
Frequency Range (fwd): 54-1000 MHz
Frequency Range (rev): 5-42 MHz
Isolation 54-1000 MHz
(Adjacent): 40 dB
(Opposing): 50 dB
Return Loss: -18 dB
Impedance: 75 ohms
Test Point: -20 ±3 dB
RF Output
Frequency Range
(fwd): 54-1000 MHz
(rev): 5-42 MHz
Insertion Loss
(5-42 MHz): 1.8 dB min
(54-550 MHz): 28 dB min
(551-1000 MHz): 31 dB min
Flatness
(5-42 MHz): ±0.5 dB
(54-550 MHz): ±1.0 dB
(551-1000 MHz): ±1.5 dB
Return Loss: -18 dB
Impedance: 75 ohms
Test Point: -20 ±3 dB
General
Dimensions: 19˝(L) x 12˝(D) x 1.75˝(H)
Weight: 3.8 lbs.
Connectors: “F” type
Ordering Information
C860 Bi-Directional Combiner
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