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Iso-Max VRD-1FF
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Jensen...The Worlds Finest Audio Transformers
Jensen Transformers Inc., 9304 Deering Ave. Chatsworth, CA 91311
P: (818) 374-5857 F: (818) 374-5856 info@jensen-transformers.com
jensen-transformers.com
Applications
VRD-1FF
VRD-1FF CATV isolator
• Improves audio/video quality by reducing 60 Hz ground currents
• 2 MHz to 1300 MHz bandwidth spans VHF/FM/UHF/CATV spectrum
• Capacitive based design minimizes broadcast channel interference
• Meets FCC Part 76 Regulations for CATV systems
The Iso•Max VRD-1FF is a high performance capacitive isolator that has
been meticulously designed to break the ground loop that causes hum and
buzz in audio, 60 cycle hum bars in video or introduces frequency dips that
cause channels to drop in digital cable.
Housed in a compact cylinder, this second generation VRD-1FF employs
a unique RF engineered solution that delivers a ruler-flat response from
2 Mhz to over 1300 MHz spanning the VHF/FM/UHF and CATV spectrum.
Gold plated F connectors are carefully machined to ensure true 75 Ω com-
patibility for optimal signal integrity and minimize reflections or ghosting.
Plug and play easy to use, this passive solution doesn’t require any power.
One simply inserts the VRD-1FF in series with the incoming signal and it qui-
etly goes to work without degrading the signal. This makes the VRD-1FF a
‘must have’ for the AV technician that is servicing and installing digital cable
as well as conventional CATV or VHF/UHF antenna or MATV systems.
Connectors are nickel plated brass
“F” type with gold plated contacts.
Either connector may be used for input or output.
VRD-1FF with digital cable tv
The Iso•Max VRD-1FF is the perfect
‘trouble-solving partner for digital video
transmission problems. It isolates the
source and destination without introduc-
ing frequency dips that cause channels to
drop. It works equally well to get rid of au-
dio hum and buzz with standard cable TV.
Distributing video in large facilities
Distributing video around a large facility
such as an airport, arena, or convention
hall can often lead to quality picture prob-
lems caused by uctuating voltage refer-
ences at various power drops. The VRD-1FF
isolates the local monitor from disruptive
DC currents.
Solving CATV hum bars
When interfacing a distant camera to a
video system, hum in the form of 60 cycle
hum bars will often nd their way into the
picture. The Iso•Max VRD-1FF provides a
plug & play solution that eliminates the
problem-causing stray DC currents without
aecting the video quality.
2.52”
(64 mm)
0.66” DIA
(16.76 mm)
1.6”
(40.64 mm)
Jensen...The Worlds Finest Audio Transformers
Jensen Transformers Inc., 9304 Deering Ave. Chatsworth, CA 91311
P: (818) 374-5857 F: (818) 374-5856 info@jensen-transformers.com
jensen-transformers.com
CATV
Residential
“Drop”
SHIELD
GROUND*
ISO-MAX
VRD-1FF
VRD-1FF
PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM
Insertion loss
5 MHz, HP 3577A Analyzer -0.19 dB
50 MHz, HP 3577A Analyzer
-0.01 dB -0.1dB
Bandwidth
LF -3 dB re 100 MHz,
HP 3577A Analyzer 1 MHz 1.2 MHz
HF -3 dB re 100 MHz,
HP 8711A Analyzer 1000 MHz > 1300 MHz
VSWR, input or output port 50 MHz to 866 MHz,
HP 8711A Analyzer
1.08
(see graph)
1.2
Input to output voltage 200 V DC
Externally Radiated Field at 3 Meters
Ref. level = 1.414mVrms, Frequency = 50MHz 1.1uV/meter
Ref. level = 1.414mVrms, Frequency = 500MHz 4.8uV/meter
Ref. level = 1.414mVrms, Frequency = 1GHz 6.3uV/meter
Margin below FCC part 76 Limits
Ref. level = 1.414mVrms, Frequency = 50MHz 25.6dB
Ref. level = 1.414mVrms, Frequency = 500MHz 12.5dB
Ref. level = 1.414mVrms, Frequency = 1GHz 10.1dB
Cable length
input
output
Isolation Impedance output shield to input shield, 60 Hz 1 MΩ 1.3 MΩ
All minimum and maximum specica-
tions are guaranteed. Unless noted
otherwise, all specications apply at
25
°C. Specications subject to change
without notice. All information herein
is believed to be accurate and reliable,
however no responsibility is assumed
for its use nor for any infringements of
patents which may result from its use.
No license is granted by implication or
otherwise under any patent or patent
rights of Jensen Transformers, Inc.
*IMPORTANT NOTE: THIS PRODUCT
IS NOT INTENDED FOR USE IN
CIRCUMSTANCES WHERE THE DC
OR PEAK AC VOLTAGE BETWEEN
INPUT AND OUTPUT CONNECTIONS
EXCEEDS 34 VOLTS OR WHERE ITS
FAILURE COULD CAUSE INJURY OR
DEATH.
Source Z = load Z = 75 Ω, signal level = -20 dBm
* For maximum protection from lightning strikes, a good low impedance
ground is necessary. Most local codes require this at building entry.
AMPLITUDE (dB) vs FREQUENCY (MHz)
REFLECTION COEFFICIENT (dB) and VSWR vs FREQUENCY (MHz)
VSWR
REFLECTION COEFFICIENT
1.0
0
0.0
-10 1.924
-20 1.222
-30 1.065
-40 1.020
-50 1.006
-60
-1.0
-2.0
-3.0
-4.0
-5.0
-6.0
0
0
100
100
200
200
300
300
400
400
500
500
600
600
700
700
800
800
900
900
1000
1000
1100
1100
1200
1200
1300
1300
Produktspecifikationer
| Varumärke: | Jensen |
| Kategori: | ej kategoriserat |
| Modell: | Iso-Max VRD-1FF |
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