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12 Studio Equipment (898-1021)

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12 Studio Equipment (898-1021) Section12 PHOTO - VIDEO - PRO AUDIO STUDIO EQUIPMENT Allen Avionics....................................900-901 Analog Way .......................................902-908 Barco...........................................................909 CSI ........................................................910-913 Comprehensive .................................914-919 Ensemble Designs ............................920-929 Gefen ..................................................930-933 Grass Valley .......................................934-935 Horita .................................................936-949 Video Hotronics ...........................................950-953 Keywest Technology........................954-955 Knox Video.........................................956-961 Kramer................................................962-973 Link Electronics.................................974-993 Miranda ............................................994-1007 Reflecmedia....................................1008-1011 SourceBook Rosco.........................................................1012 Teranex.....................................................1013 TV One.............................................1014-1021 Obtaining information and ordering from B&H is quick and easy. When you call us, just punch in the corresponding Quick Dial number anytime during our welcome message. The Quick Dial code then directs you to the specific The professional sales associates in our order department. For Section12, Studio Equipment use Quick Dial #: 821 Professional 900 STUDIO EQUIPMENT ALLEN AVIONICS HUM ELIMINATORS RF transmission in cables is routinely plagued by 50Hz or 60Hz hum or other interference. When a cable is used for video signals, small electrical currents caused by differences in ground potential (ground loops) or induced common-mode noise, can result in considerable hum interference. Cameras, video recorders, monitors and video effects generators... even switchers and computers downstream... are affected. Allen Avionics offers three types of products to eliminate hum caused by ground loops or induced currents. All are broadcast quality. Although they can be inserted anywhere in the transmission system, they are most effective at or near the end of the cable run. Hum Eliminators Hum eliminators work best in those circumstances where interference is cause by small differences in ground potential (less than 20v DC) or by induced currents in long cable runs. When there are multiple power panels in a building, or even on a single floor, equipment and lighting loads result in small differences in potential which induce ground loop current flow and 60Hz hum. Electromagnetically-induced currents in long cable runs also create hum. For 50Hz and 60Hz power systems, and where induced currents are high, HEC-2000 and HEC-2000-H increase the attenuation at the power frequency. Should a small amount of hum remain after an HEC has been added to the circuit, a second HEC can be added in series, without significant degradaton of the video signal. ◆ Flat response ◆ No differential gain distortion ◆ Small, compact package ◆ Bandwidths up to 30MHz (100 MHz on the ◆ No differential phase distortion ◆ Use in the field between remote truck; telco HEC-5000) ◆ Passive device-failure free and microwave; for intertruck hookup ◆ ◆ For color and B&W ◆ Reversible Use in the studio between buildings; on long ◆ runs in buildings; between studios and trans- No low frequency or high frequency roll-off ◆ Rugged, waterproof case mitters; incoming/outgoing telco circuits HEC-500: HEC-3000: 50 Ohms unbalanced (impedance), 50dB for 60Hz hum reduction 75 Ohms unbalanced (impedance), provides 3 channels of 60dB for depending on system, 0.2dB maximum insertion loss, 20dB minimum 50Hz or 60Hz hum reduction depending on system, 0.2 dB maximum 3 return loss. Made of high-impact ABS plastic, measures 5 ⁄8 x 4 x 2” insertion loss, 20dB minimum return loss. Provides 70dB isolation 1 3 1 (HxWxD) and weighs 2.5 lbs. (Mfr # HEC500 • B&H # ALHEC500) ..................144.95 between channels. Made of die-cast metal, measures 7⁄16 x 4 ⁄4 x 3⁄16” (HxWxD) and weighs10 lbs. HEC-1000: (Mfr # HEC3000 • B&H # ALHEC3000) ........................................................................399.95 75 Ohms unbalanced (impedance), 50dB for 60Hz hum reduction depending on system, 0.2dB maximum insertion loss, 20dB minimum HEC-4000: 3 return loss. Made of high-impact ABS plastic, measures 5 ⁄8 x 4 x 2” GBR unbalanced (impedance), Sync balanced, provides 3 channels of (HxWxD) and weighs 3.5 lbs. (Mfr # HEC1000 • B&H # ALHEC1000)..............139.95 60dB for 50Hz or 60Hz hum reduction when used in RGB or YUV systems, plus one channel of transformer isolation. 0.2dB maximum HEC-2000: insertion loss, 20dB minimum return loss. Provides 70dB isolation 1 3 1 75 Ohms unbalanced (impedance), 60dB for 50Hz or 60Hz hum between channels. Made of die-cast metal, measures 7⁄16 x 4 ⁄4 x 3⁄16” reduction depending on system, 0.2dB maximum insertion loss, 20 dB (HxWxD) and weighs10 lbs. 11 11 minimum return loss. Made of die-cast metal, measures 4 ⁄16 x 3 ⁄16 x (Mfr # HEC4000 • B&H # ALHEC4000) ........................................................................519.95 1 2 ⁄16” (HxWxD) and weighs 3.5 lbs. (Mfr # HEC2000 • B&H # ALHEC2000) ....149.95 HEC-5000: HEC-2000-H: 75 Ohms unbalanced (impedance), provides 5 channels of 60 dB per Same as above, except designed for optional rack mounting installation. channel hum reduction. 0.2dB maximum insertion loss, 20dB minimum A heavy-duty version, 1/4” thick, stainless steel guard rails to protect the return loss. Provides 70dB isolation between channels. connectors when not in use. (Mfr # HEC2000H • B&H # ALHEC2000H)..........169.95 The HEC-5000 has a bandwidth of over100 MHz making it suitable for HDTV applications and many video projection systems with 100 MHz 1 3 1 HEC-2000-V: bandwidths. Made of die-cast metal, measures 7⁄16 x 4 ⁄4 x 3⁄16” (HxWxD) Heavy-duty version,1/4” thick, stainless steel guard rails protect and weighs10 lbs. connectors when not in use. (Mfr # HEC2000V • B&H # ALHEC2000V) ..........174.95 (Mfr # HEC5000 • B&H # ALHEC5000 )........................................................................594.95 www.bhphotovideo.com PHOTO - VIDEO - PRO AUDIO STUDIO EQUIPMENT 901 ALLEN AVIONICS Video Noise Eliminators Video Isolation Transformers (VIT) Video noise eliminators are effective for video signals up to 30MHz— Breaking the ground connection in video transmission lines will eliminate encompassing HDTV frequencies with little distortion. For signals below 60Hz hum caused by ground loops. When there are hum problems 20MHz they are totally “transparent”. Since hum reduction, using video caused by large potential differences (20v or more) the video isolation noise eliminators, is not as great as with HECs, their use is recommended transformer is the product to use. The dielectric withstanding voltage of only where higher frequencies are involved. the VIT is over 500 volts at DC. VITs are true isolation transformers—there is no DC path between the windings. Frequency response is flat over the VNE-50: 50 Ohms unbalanced (impedance), 40dB for 60Hz hum range 20Hz to 4.5MHz. VITs also remove the hum created by electromag- reduction depending on system, 0.2dB maximum insertion loss, 20dB netically induced currents from power lines or distribution systems. 3 minimum return loss. Made of high-impact ABS plastic, measures 4 ⁄8 x 1 3⁄4 x 2” (HxWxD) and weighs 1 lb. (Mfr # VNE50 • B&H # ALVNE50)................149.95 VIT-50: 50 Ohms unbalanced (impedance), 20Hz to 6MHz video bandwidth, 100 megohms minimum video isolation,1dB maximum VNE-75 50 Ohms unbalanced (impedance), 40dB for 60Hz hum reduction insertion loss, 20 dB minimum return loss. depending on system, 0.2dB maximum insertion loss, 20dB minimum 3 5 1 Made of high-impact ABS plastic, measures 3 ⁄4 x 2 ⁄8 x 1⁄2” (HxWxD) and 3 1 return loss. Made of high-impact ABS plastic, measures 4 ⁄8 x 3⁄4 x 2” weighs 1 lb. (Mfr # VIT50 • B&H # ALVIT50).............................................................159.95 (HxWxD) and weighs 1 lb. (Mfr # VNE75 • B&H # ALVNE75)...............................144.95 VIT-75: Same as above except with 75 Ohms impedance VNE-75-3 Triple Channel: 75 Ohms unbalanced (impedance), 40dB (Mfr # VIT75 • B&H # ALVIT75)......................................................................................124.95 minimum hum reduction per channel, 0.2dB maximum insertion loss, 20dB minimum return loss. Provides 70dB isolation between channels. VIT-75-3: Same as above except three channels. Provides 60 dB isolation 7 3 1 11 11 1 Made of die-cast metal, measures 7 ⁄16 x 4 ⁄4 x 2 ⁄16” (HxWxD) and weighs between channels. Made of die-cast metal, measures 4 ⁄16 x 3 ⁄16 x 2 ⁄16” 1 3.5 lbs. (Mfr # VNE753 • B&H # ALVNE753).................................................................379.95 (HxWxD) and weighs 2⁄2 lbs. (Mfr # VIT753 • B&H # ALVIT753) .........................334.95 Infinitely Variable Video Delay Lines “In line” video delays, they utilize front mounted toggle switches and a fine trimmer to adjust video delay parameters. Useful in matching video sources with varied cable runs. A video delay will take the place of the mound of coiled coax that some studios use to time equipment. Impedance is 75 Ohms, working voltage is100-volts. Pulse distortion is less than 3% with an input rise time of 20 seconds. Return loss is 20dB or greater. VAR005 VAR011 VRM011 VRM0256 VAR256 VRM0320 VAR320
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