Vecima / Wavecom / Vcom QHD4040 Quad Upconverter QAM256 Start Price USD 1,200.00 Current Price USD 1,200.00 Time Left 1 days 4 hours 50 minutes Bid Count 0 Buy It Now Price - Reserve Price - Start Time Monday, October 13, 2008 End Time Sunday, January 11, 2009 Location San Diego, California See more about 'Vecima / Wavecom / Vcom QHD4040 Quad Upconverter QAM256' Description This auction is for a lightly used  Vecima (formerly known as Vcom and Wavecom) QHD4040.  This is the top of the line Docsis Upconverter in 1RU.  Asking price here is $1200, which is only $300 per upconverter (unit comes with four).Item may also be purchased via the NCTC (please contact us for details and pricing).  90 Day warranty. We ship quickly worldwide.  We also have used units for sale under a different eBay auction.  Please email us if you have any questions.  Good luck to all bidders! QHD4040 Quad Upconverter (High Density; Frequency Agile 256 QAM)   The QHD4040 is a Quad digital upconverter which achieves previously unavailable density and conservation of headend rack space for upconverter intensive applications such as digital video on demand (DVOD) and cable modem service. Advanced design allows a single card to cover a frequency band from 88 to 858 MHz and still maintain a phase noise specification which exceeds the requirements of 64/256 QAM. Remarkably low out of band noise performance and low spurious are achieved through high level mixing, a microwave frequency IF and multiple levels of filtering.       Each chassis with common power supply contains 4 independent frequency agile upconverters in a 1U rack mount configuration. The redundancy features of this product make it suitable for the most demanding applications. Built in power detectors allow for easy input and output level configuration. The controller module features a remote control interface (with optional SNMP), allowing full control and monitoring of all frequencies and levels. This advanced, cost effective upconverter offers high performance, flexibility and space efficiency.         Features: Four independent digital upconverters in 1U High level output; +61 dBmV 88 to 858 MHz Front panel selectable output frquency in 12.5 kHz step size Digital slope compensation to achieve < ±0.3 dB slope over any channel Auto IF AGC automatically corrects for input level changes (non-bursty) Out of band noise performance -12 dBmV / 6 MHz (-15 dBmV / 6 MHz typ) -11 dBmV / 8 MHz (8 MHz option) -30 dBmV / 6 MHz > twice RF frequency typical Excellent in-band noise performance User defined soft alarms for IF and RF levels which can be enabled from remote control RF ALC allows frequency to be adjusted without affecting the RF level RF output mutes when changing output configuration High reliability, state-of-the-art design using microstrip MMIC and surface mount technology Conservative component derating and 100% burn in help ensure reliable operation Low power consumption All local oscillators are frequency synthesized and locked to a common internal high stability reference Local control via Vacuum Fluorescent Display and 4 soft touch push buttons Remote control via RS232 / RS485 / Terminal mode or optional SNMP FLASH memory for easy software updates Front panel displays IF and RF power levels International internal autosensing power supply (100 to 240 VAC; 50 to 60 Hz); -48 VDC power supply option available High reliability fans ensure cool operation for long product life 1-to-1 Redundancy (50 ms switching) Specifications - QHD4040 Upconverter IF Input IF Frequency (center of the band) Bandwidth Input Level Impedance Return Loss Connector IF Detector Accuracy IF Attenuator Step Size IF ALC (for carrier/digital input) IF Monitor 44.00 MHz Passband 6 MHz (8 MHz - option 1P1) +25 to +35 dBmV (total power) 75 ohm 16 dB typical F type (female) 1 dB typical 0.1 dB typical enable/disable -20 dBc typical   RF Output Frequency Range Frequency Step Size Frequency Accuracy Frequency Response (any 5 MHz band) Frequency Response (any 7 MHz band) Group Delay (any 5 MHz band) Output Level Output Level Step Size RF Detector Accuracy Gain Control Range Impedance Return Loss (inband) Connector RF Monitor Point (calibrated) Spurious (50 MHz to 900 MHz) Phase Noise: 88 to 858 MHz (band center) 12.5 kHz 2 ppm ± 0.25 dB ± 0.4 dB (for wide band options) 15 nsec p-p max (8 nsec typical) +61 dBmV max. 0.1 dB typical ± 1.0 dB typical +45 to +61 dBmV 75 ohm 16 dB F type -20 dB ±0.5 dB -60 dBc (-70 dBc typical) 1 to 10 kHz (double side band noise power) 10 to 50 kHz (double side band noise power) 50 kHz to 3 MHz (double side band noise power) 10 kHz Offset (SSB) -36 dBc -54 dBc -53 dBc -95 dBc / Hz @ 10 kHz Broadband Noise (average noise all channels outside ± 18 MHz) -12 dBmV / 6 MHz (-15 dBmV / 6 MHz typical) -11 dBmV / 8 MHz (option 1P1) Modulated Adjacent Noise (6 MHz channel Passband)   ± 3 to 3.75 MHz ± 3.75 to 9 MHz ± 9 to 15 MHz -58 dBc min -62 dBc min -65 dBc min Modulated Adjacent Noise (8 MHz channel Passband - option 1P1) ± 4 to 5 MHz ± 5 to 12 MHz ± 12 to 20 MHz -58 dBc min -61 dBc min -64 dBc min Carrier Mute Automatic upon frequency change 1-to-1 Redundancy Switching Speed < 50 ms Miscellaneous Remote Control Serial Interface Remote Control Serial Interface - Option 2S1 Connector Power Requirement Dual Redundant Power Consumption Operating Temperature Mounting Dimensions Weight F Connectors RS232, RS485 or Terminal Mode (software selectable) RS232, Terminal, or SNMP over IEEE 802.3 10-Base-T Ethernet) Dual RJ45 100 to 240 VAC, 50 to 60 Hz (Optional -48 VDC) 80 Watts max. 10 to 40°C (50 to 104°F) Standard 19" (48.3 cm), 1U (1.75") rack space 19"(w) X 14.9"(d) X 1.75"(h) (48.3 X 37.85 X 4.45 cm) 11.5 lbs. (6.3 kg) ANSI SP 406-1998 SquareTrade © AP6.0 SquareTrade © squaretrade warranty v2.0 Place a Bid!