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vcom 上变频器 256 qam docsis upconverter uc4040d
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vcom uc4040d 上变频器
theuc4040dis a fully agile commercial quality if upconverter for data over cable and digital video-on-demand applications. advanced design allows the uc4040d to cover a frequency band from 53 to 858 mhz and still maintain a phase noise specification which exceeds the docsis requirements for 64/256 qam. remarkably low out of band noise performance and low spurious are achieved through high level mixing, a microwave frequency ifand multiple levels of filtering. the uc4040d is fully docsis compliant and optimized for
64/256 qam cable modem traffic. built in if & rf power detectors allow for easy input and output level configuration. the remote control interface allows full control and monitoring of all frequencies and levels. this advanced, cost
effective upconverter offers high performance, flexibility and space efficiency.
uc4040dfeatures include:
• high level output; +61 dbmv 53 to 858 mhz
• front panel selectable output frequency in 12.5 khz step size
• digital slope compensation to achieve < ±0.3 db slope over any channel
• a range of custom if input frequencies are available
• auto if agc automatically corrects fo input level changes (non-bursty)
• out of band noise performance < -12 dbmv/-30dbmv/6 mhz
• excellent in-band noise performance
• user defined soft alarms for if and rf levels can be enabled via remote control
• rf output mutes when changing output configuration
• conservative component derating and 100% burn in help ensure reliable operation
• high reliability, state-of-the-art design using microstrip mmic and surface mount
technology
• low power consumption
• local control via lcd and 4 soft touch push buttons
• remote control via rs232/rs485 or optional snmp
• flash memory for easy software updates
• all local oscillators are frequency synthesized and locked to a common internal high stability reference
• front panel displays if and rf power levels
• international internal switching power supply (100 to 240 vac) or optional -48 vdc
• internal high reliability fan ensures cool operation for long product life
uc4040dif input
if frequency (center of the band) 44.00 mhz (optional 36.125 mhz)
bandwidth passband 6 mhz (optional 8 mhz)
input level +25 to +35 dbmv (total power)
impedance 75 ohm
return loss 20 db
connector f type (female)
if detector accuracy 1 db
if attenuator step size 0.05 db typical
if agc enable/disable (for carrier/digital input)
rf output
frequencyrange 53 to 858 mhz (band center)
frequency step size 12.5 khz
frequency accuracy 2 ppm
frequency response (any 5 mhz band) ±0.3 db
frequency response (any 7 mhz band) ±0.4 db (for wide band options)
group delay (any 5 mhz band) 15 nsec p-p max.(8 nsec typical)
output level +61 dbmv max.
output level step size 0.05 db typical
rf detector accuracy ±1 db typical
gaincontrol range +45 to +61 dbmv
impedance 75 ohm
return loss (inband) 16 db
connector f type
rf monitor point (calibrated) -20 db±0.5 db
spurious (50 mhz to 950 mhz) -60 dbc (-70 dbc typical)
uc4040dphase noise
1 to 10 khz (double side band noise power) -37 dbc (-40 dbc typical)
10 to 50 khz (double side band noise power) -54 dbc (-57 dbc typical)
50 khz to 3 mhz (double side band noise power) -53 dbc (-55 dbc typical)
10 khz offset (single side band) -95 dbc/hz@10 khz (-99 dbc/hz typical)
broadband noise (< 59 dbmv rf output)
(average noise all channels outside ±18 mhz) -12 dbmv/6 mhz (-15 dbmv/6 mhz typical)
-11 dbmv/8 mhz (8 mhz option)
-30 dbmv/6 mhz at twice rf frequency
modulated adjacent noise (6 mhz channel passband)
±3 to 3.75 mhz -58 dbc min (<-60 typical)
±3.75 to 9 mhz -62 dbc min (<-64 typical)
±9 to 15 mhz -65 dbc min
modulated adjacent noise (8 mhz channel passband option)
±4 to 5 mhz -58 dbc min
±5 to 12 mhz -61 dbc min
±12 to 20 mhz -64 dbc min
carrier mute carrier mute automatic upon
frequency change
options
1p1 - input - digital 44.000 mhz with 8 mhz passband 2s1 - snmp proxy agent and interface
1p2 - input - digital 36.125 mhz with 8 mhz passband 6s2 - internal -48 vdc power supply
1p4 - 43.75 mhz if with 8 mhz passband
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深圳市金凯鹏电子有限公司
马静
13510027070
深圳市福田区深圳市深南中路华南电力大厦1010