Neutrik NBNC75BFG7, NBNC75BJP9 User Manual
75 Ohm BNC Connectors
77
Content Page
Rear Twist Cable Connectors ................................... 79
Push Pull Cable Connectors ..................................... 81
Accessories ............................................................ 83
Cable to Connector Guide ...................................... 84
Connector to Cable Guide ...................................... 86
Chassis Connectors ................................................ 88
Technical Data ....................................................... 89
With the introduction of HD signals the impedance of BNC connectors becames more important than ever. Every deviate impedance has a negative influence on the „return loss“ / „VSWR“
(Voltage Standing Wave Ratio) which are important measurements for reflected signals in a transmission line. Especially on
high frequencies - as they occur when transmitting HD signals
(typical transmission @ 2.25 GHz) - an impedance mismatch
results in a lot of return loss.
Neutrik´s BNC connectors feature a true 75 Ω design that meet
the stringent requirements of HDTV and sustain a consistent
impedance at high frequencies up to 3 GHz. To achieve this
result every Neutrik
®
BNC connector has been adapted to the
measurements of a small group of cables, this guarantees the
best possible performance and a little return loss.
The higher the frequencies the more pronounced is the „skin
effect“, which means that the energy moves to the outside of
the conductor. Therefore the plating of outer and center contact
is more important than on audio connectors with low frequencies - both contacts of our BNC connectors are gold plated.
True 75Ω HDTV Connectors
2005 VERSION with
enhanced high frequency
shielding!
78
NEUTRIK® 75Ω BNC Connectors
Frequency [MHz]
Return Loss [-dB]
0 500 1000 1500 2000 2500 3000
-45
-40
-35
-30
-25
-20
Frequ. RL
[GHz] [dB]
1 39.83
2 34.17
3 32.82
Neutrik® offers a variety of 75 Ω cable and chassis BNC connectors. The Push-Pull and RearTwist® cable connectors are easy to
handle in high density applications such as video patchbays and switches, provide a tactile and fast assembly and offer colour
coding as a standard. All parts of our BNC series are precisely machined to our high quality standards.
In times of rising frequencies the connector shielding becomes
to an important value in order to avoid EMI problems and crosstalking. The 2005 version takes this fact into account and has
been equipped with an optimized ground contact design for
maximum shielding effectiveness.
-20
Screeningatten./ [-dB]
Frequency [GHz]
-30
-40
-50
-60
-70
-80
-90
-100
1.11.21.41.6 1.82.02.22.42.6 2.83.0
Gold plated ground contact with improved shielding effectiveness
optimized for high frequency HDTV signal up to 3 GHz.
Look for the Logo
79
www.neutrik.com
Rear Twist Cable Connectors
●
“Rear Twist® Principle” locking/unlocking using the easily accessible soft touch boot (Patent DE 100 48507)
●
Ideal for recessed bulkheads where access to the “head” of the connector might be an issue. These connectors turn from
the back and not the front.
●
True 75 Ω design meets the stringent HDTV / DVD requirements
●
Snug-fit center pin insert provides tactile feedback
●
Shield and jacket crimp technology prevents the problem of an exposed grounding braid on cable assemblies
●
Excellent cable protection and retention
●
Large version for RG 11 cable
●
Precise Swiss machined brass parts for outstanding durability
●
Accessories include color coded boots in 10 standard colours, crimp tool and dies
●
Sleek female cable jack e.g. for Y-cables
●
Mountable panel version of cable jack for fixed installations
Rear Twist® (Standard, Large & Tiny) and Cable Jacks
NBTC75BLI4 NBNC75BLP7 NBNB75GLP9 NBTB75CFI4
to identify the original
Features & Benefits
For further technical information
80
Rear Twist Cable Connectors
●
Screen and cable jacket crimp instead of
screen crimp only.
Grooved inner surface holds the cable jacket
to prevent tearing braids.
●
Rear Twist
®
boot in 10 colours
for easy access in high density
applications.
●
Leading area: Avoids tilting due to side forces to
protect the contacts from deformation. Guarantees
a lifetime of min. 1`000 mating cycles!
●
Gold plated ground contact with improved
shielding effectiveness optimized for high
frequency HDTV signal up to 3 GHz.
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