Transcript
The DM710 and DM740 Demodulator Series The DM710 is the perfect demodulator for utility applications in cable TV, industrial TV headends, trucks, presentation rooms, and more. The DM710 accepts either Antenna or Cable TV RF inputs, and outputs both video and balanced BTSC stereo audio. The compact size allows up to three DM710 demodulators to be mounted side by side in only one rack unit of space. A rear panel switch allows for locking the DM710 to all selected functions, including channel tuning, video and audio level, and stereo balance. Other functions include selection of channel fine tuning offsets and forced HRC tuning.
DM710 Features
Meeting Tomorrow’s Standards Today
Basic demodulator application Antenna or Cable TV RF inputs Outputs both video and balanced BTSC stereo audio Selection of channel fine tuning offsets and forced HRC tuning Rear panel switch to lock the DM710 to selected functions Compact Size - three demodulators in 1 RU Easy system power - 12 VDC operation, AC adaptor included; Multi-unit and 48 VDC power units available BTSC Stereo decoder Clear front panel indication of channel selection confirms operation at a glance
The DM740 receives “off-air” or CATV signals, demodulates these signals and provides two buffered composite baseband video ouputs. The DM740 also provides balanced stereo audio outputs which may be monitored via the front panel speaker. The DM740 is used in headends, studios and remotes for monitoring and retransmission applications.
DM740 Features 154 channel tuning (VHF/UHF/Cable) HRC/IRC tuning capability Wide range fine tuning Random access, search or up/down channel selection Front panel Cable/Antenna selection Frequency synthesized channel selection Synchronous detection Stereo presence indicator Front panel LED channel display Controls for video gain, audio gain and balance on front panel Front panel memory retained for one week in the event of power loss
For more information or to place an order, please contact Supply Solutions at www.standardcomm.com 866-978-7759. Courtesy of Standard Communications.
The DM710 and DM740 Specifications DM710
DM740
TUNER Frequency Range..........................................55.25 to 801.25 MHz...............................55.25 to 801.25 MHz Connector......................................................75 ohms “F”, female................................75 ohms “F”, female Input Range.................................................. -15 to +15 dBmV.....................................-15 to +15 dBMV Maximum RF Input level...............................+30 dBmV................................................+30 dBmV Channel Coverage........................................VHF Channels 2-13..................................VHF Channels 2-13 UHF Channels 14-69 UHF Channels 46-69 Cable Channels 2-99 Cable Channels 2-99 Band..............................................................Low, Mild, High, Super, UHF....................Low, Mild, High, Super, UHF Detector.........................................................Synchronous............................................Synchronous Cross Modulation..........................................<-55 dB or better......................................<-50 dB nominal Fine Tuning Range........................................+1.5 MHz (capture)..................................+2 MHz in 64 steps (62.5 kHz per step) Frequency Stability........................................+15 kHz typical........................................+15 kHz typical VIDEO Output............................................................NTSC video, ..........................................(2) NTSC video, negative sync negative sync Connector......................................................75 ohm BNC, female...............................75 ohms BNC, female Level..............................................................1V p-p, nominal into 75 ohms load.........1V p-p, nominal into 75 ohms load Adjustment Range.........................................+1.5 dB...................................................+3 dB typical (front panel control) Chroma/Luma Delay......................................50 ns.......................................................Within 30 ns typical (ref -170) Differential Gain.............................................5%...........................................................<5% Differential Phase..........................................5 degrees................................................<5 degrees Signal to Noise Ratio.....................................48 dB.......................................................55 dB at 10 dBmV AUDIO Line Ouputs...................................................Balanced stereo (left and right)...............Balanced stereo (left and right) Connector......................................................2-piece terminal strip...............................XLR (male) Level..............................................................0 dBm, nominal (600 ohms)....................0 dBm, nominal (600 ohms) Adjustment Range.........................................-16 dBm to +4 dBm.................................-16 dBm to +4 dBm Monitoring......................................................Headphone jack, mini, 32 ohms.............Built in 1” speaker w/level control, 32 ohms Frequency Response....................................100 to 12 kHz.........................................50 Hz to 12 kHz (stereo mode) Signal to Noise Ratio....................................>48 dB......................................................50 dB at 0 dBm Stereo Separation.........................................> 5 dB.......................................................>20 dB @ 1 kHz Distortion.......................................................<2%..........................................................2% maximum, 1 kHz to 12 kHz POWER Input..............................................................12 VDC (120 VAC adapter included).......90 - 264 VAC, 50/60 Hz Consumption.................................................15 VA.......................................................35 VA, typical Connection....................................................Locking, center positive...........................Detachable 3 wire power cord per IEC 320 GENERAL Operating Temperature.................................0 to 50 C...................................................0 to 50 degrees C Storage Temperature....................................-40 to 75 degrees C..................................-40 to 75 degrees C Humidity........................................................90% maximum (non-condensing).............90% maximum (non-condensing) MECHANICAL Size...............................................................5.25”W x 9.9”D x 1.74”H..........................19”W x 10.75”D x 1.75”H
United States Corporate Headquarters 1111 Knox Street Torrance, CA 90502 310-532-5300 800-745-2445 310-532-0397 Fax
Canada 37 Billings Street Whitby, Ontario Canada L1N9C1 905-665-7501 905-665-7486 Fax
www.standardcomm.com
Europe 23 Watford Metro Centre Tolpits Lane Hertfordshire WD1 8SB England 44 1923 800 510 44 1923 800 445 Fax
South America Rua Tutoia, 349 Cjto. 71 - Paraiso Sao Paulo - SP Brazil Cep. 04007-001 55 11 887 6598 55 11 3051 3233 Fax
ISO 9001 Registered For more information or to place an order, please contact Supply Solutions at 866-978-7759. Courtesy of Standard Communications.
