Specifications
STUDIO EQUIPMENT
ALLEN AVIONICS
901
(212) 444-6601 • 1-800-947-9901• Quick Dial 821
PHOTO - VIDEO - PRO AUDIO
Video Noise Eliminators
Video noise eliminators are effective for video signals up to 30MHz—
encompassing HDTV frequencies with little distortion. For signals below
20MHz they are totally “transparent”. Since hum reduction, using video
noise eliminators, is not as great as with HECs, their use is recommended
only where higher frequencies are involved.
VNE-50: 50 Ohms unbalanced (impedance), 40dB for 60Hz hum
reduction depending on system, 0.2dB maximum insertion loss, 20dB
minimum return loss. Made of high-impact ABS plastic, measures 4
3
⁄8 x
3
1
⁄4 x 2” (HxWxD) and weighs 1 lb. (Mfr # VNE50 • B&H # ALVNE50)................149.95
VNE-75 50 Ohms unbalanced (impedance), 40dB for 60Hz hum reduction
depending on system, 0.2dB maximum insertion loss, 20dB minimum
return loss. Made of high-impact ABS plastic, measures 4
3
⁄8 x 3
1
⁄4 x 2”
(HxWxD) and weighs 1 lb.
(Mfr # VNE75 • B&H # ALVNE75) ...............................144.95
VNE-75-3 Triple Channel: 75 Ohms unbalanced (impedance), 40dB
minimum hum reduction per channel, 0.2dB maximum insertion loss,
20dB minimum return loss. Provides 70dB isolation between channels.
Made of die-cast metal, measures 7
7
⁄16 x 4
3
⁄4 x 2
1
⁄16 ” (HxWxD) and weighs
3.5 lbs.
(Mfr # VNE753 • B&H # ALVNE753).................................................................379.95
Video Isolation Transformers (VIT)
Breaking the ground connection in video transmission lines will eliminate
60Hz hum caused by ground loops. When there are hum problems
caused by large potential differences (20v or more) the video isolation
transformer is the product to use. The dielectric withstanding voltage of
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
range 20Hz to 4.5MHz. VITs also remove the hum created by electromag-
netically induced currents from power lines or distribution systems.
VIT-50: 50 Ohms unbalanced (impedance), 20Hz to 6MHz video
bandwidth, 100 megohms minimum video isolation, 1dB maximum
insertion loss, 20 dB minimum return loss.
Made of high-impact ABS plastic, measures 3
3
⁄4 x 2
5
⁄8 x 1
1
⁄2” (HxWxD) and
weighs 1 lb.
(Mfr # VIT50 • B&H # ALVIT50) .............................................................159.95
VIT-75: Same as above except with 75 Ohms impedance
(Mfr # VIT75 • B&H # ALVIT75)......................................................................................124.95
VIT-75-3: Same as above except three channels. Provides 60 dB isolation
between channels. Made of die-cast metal, measures 4
11
⁄16 x 3
11
⁄16 x 2
1
⁄16”
(HxWxD) and weighs 2
1
⁄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 VAR640
Delay Range (Nanoseconds) 3-7 0-11 0-11 0-256 0-256 0-320 0-320 0-640
Method of Variation Trimmer
Toggle Switch Slide Switch Toggle Switch Toggle Switch Toggle Switch Toggle Switch Toggle Switch
& Trimmer & Trimmer & Trimmer & Trimmer & Trimmer & Trimmer & Trimmer
Trimmer Variation (Nanoseconds) 3-7 Variable - 1 Variable to .5 Varible to 1 Varible to 1 Varible to 2.5 Varible to 2.5 Varible to 5
Maximum Insertion Loss @100KHz (dB) .2 .2 .3 .3 .15 .3 .2 .8
Amplitude Flatness at any delay
.2 .25 .3 .4 .4 .4 .4 .5
setting100 KHz to 5.5 MHz (dB)
Mfr# VAR005 VAR011 VRM011 VRM0256 VAR256 VRM0320 VAR320 VAR640
B&H# ALVAR005 ALVAR011 ALRMTSVDL ALVRM0256 ALVAR256 ALVRM0320 ALVAR320 ALVAR640
Price 69.95 114.95 184.95 359.95 279.95 394.95 304.95 379.95
VRM-110: The VRM-110 is a rack mountable video delay line utilizing trimmers and slide switches to adjust video delay. It has a delay range of 0 to 11
nano-seconds.
(Mfr # VRM110 • B&H # ALVRM110).........................................................................................................................................................................................................548.95
VRM-0637: The VRM-0637 is a rack mountable video delay line utilizing slide switches to adjust video delay. It has a delay range of 0 to 637.5
nano-seconds.
(Mfr # VRM0637 • B&H # ALVRM0637).....................................................................................................................................................................................................459.95
VRM-1275: The VRM-1275 is a rack mountable video delay line utilizing front mount switches to adjust video delay. It has a delay range of 0 to 1275
nano-seconds.
(Mfr # VRM1275 • B&H # ALRMSSVDL).....................................................................................................................................................................................................529.95