3G-SDI/ HD-SDITransmission TCX-3CHD

3G-SDI/ HD-SDITransmission TCX-3CHD
● Anchoring use Coaxial Cable for 3G/HD-SDI transmission
・
Products
Technical Support
3G-SDI/ HD-SDITransmission
In 2006, 3G-SDIspecification was set by SMPTE 424M specification. Single coaxial cable can transmit 2 times volume
of existing HD-SDI signal. Our TCX-HD series has been developed subject to transmit 3G-SDI from the beginning,
therefore, customers can comfortably use with satisfaction like the existing HD-SDItransmission.
Conversion table of standard transmission distance
by SDI signal-wise in SMPTE specifications
Each SDI transmission distance is set in accordance with S
MPTE specification. The standard distance is calculated
based on the actual measurement of our coaxial cable,
3G-SDI
HD-SDI
SD-SDI
SMPTE 424M SMPTE 292M SMPTE 259M
(2.97Gbps) (1.485Gbps) (270Mbps)
Max.20dB
Max.20dB
Max.30dB
Attenuation
(@1.485GHz)(@742.5MHz)(@135MHz)
refering to SMPTE specification.(The figure is typical
value, not guaranteed.)
However, it is becoming clear that the transmission distance
is rather longer than the standard at the right table against
the specified figures. TACHII measured on the max.distance
TCX-2.8CHD
for 2-types signal of 3G-SDI and HD-SDI as the
TCX-3CHD
representative in the combination as undermentioned.
TCX-4CHD
Measuring terms for max. distance
TCX-5CHD
Term①
3G-SD I signal 3G
HD3 G7
Signal generator
Te k t r on i x TG70 0
Measured cable
T CX-4CHD
T CX-5CHD
TCX-6CHD
for3 G − S D I
Waveform monitor
Tek t r on i x W F M 8 3 00
TCX-7CHD
TCX-8CHD
Test signal
1080P 59 . 94Hz
Pathological signal
TCX-3CFB
TCX-4CFB
Term②
H D -SD I signal HD
HDVG7
Signal generator
Te k t r on i x TG70 0
Measured cable
T CX-4CHD
T CX-5CHD
TCX-5CFBL
for H D − S D I
Waveform monitor
Tek t r on i x W F M 8 3 00
TCX-7CFBL
Test signal
1080 i 59 . 94Hz
Pathological signal
H D -SD I signal 1
HDVG7
Signal generator
Te k t r on i x TG70 0
Measured cable
T CX-4CHD
T CX-5CHD
for H D − S D I
Waveform monitor
Tek t r on i x W F M 7 1 0 0
Test signal
1080 i 59 . 94Hz
Pathological signal
69m
89m
115m
132m
162m
191m
212m
73m
93m
113m
158m
246m
317m
413m
452m
586m
692m
772m
266m
337m
417m
596m
3G-SDI (Term①) Max. transmission distance actually measured
150m
100m
0m
200m
50m
Term③
HD
48m
62m
81m
93m
113m
133m
148m
50m
65m
78m
108m
TCX-4CHD
TCX-5CHD
Standard distance:81m
160m (WFM8300)
Standard distance:93m
185m (WFM8300)
Please take that the aboves are our measurement actuals,
just as reference only. Because the distance may be
HD -SDI (Term②③) Max. transmission distance actually measured
150m
100m
0m
50m
200m
250m
300m
different, depending on the used environment (materials,
temperatures etc.).Two types cable were selected for
Standard distance:115m
measurement, prepared by 5m-lot measurable.Judging from
the results listed at the right, transmission could be
TCX-4CHD
Standard distance:115m
surprisingly confirmed nearly double distance of SMPTE
145m(WFM7100)
Standard distance:132m
standard when WFM8300 was used (40dB in attenuation).
The results were largely different between new and old type
230m(WFM8300)
TCX-5CHD
of waveform monitor, despite of the same signal in Term ②③.
This means it is very important to know in advance max.
Standard distance:132m
255m
160m(WFM7100)
(WFM8300)
※ Max. transmission distance was actually determined, after measuring the distance (of
transmission distance of the used equipment, when the
no bit error happened) on the continuous transmission for more than 5 hours.
system is actually designed.
TCX-3CHD SDITransmission distance improvement TCX-2.8CHD Wiring on rack for space-saving・lightening
TCX-3CHD,TCX-2.8CHD vs. conventional 3CFB Comparison
3CFB
TCX2.8CHD
Cable O.D.
4.4mm
Cable Weight
(100m)
2.6kg
HD-SDI Standard
transmission distance
3G-SDI Standard
transmission distance
69m
48m
TCX-3CHD
Commodity cable
actually measured
abt.20%Thinner
abt.38%Lighter
Equivalent
level
Equivalent
level
5.5mm
4.2kg
70m
48m
Since our introduction,TCX-2.8CHD has been widely employed in the fields
undermentioned, because of contribution to density growth and lightening of
broadcasting equipments.
Equivalent
level
abt.9%Lighter
abt.27%Up
abt.29%Up
5.5mm
・Space-saving in density router using DIN connector
・Space-saving in wiring on rack
・Space-saving & lightening in big o.b.vans for HD
・Lightening of mobile helicopter, etc.
3.8kg
89m
62m
Note : The figures are typical, are not the guaranteed value.
The requirement has been increased more in the transmission capability of
coaxial cable, in accordance with 3G-SDIappearance & 3D image adoption, more
densified content signal transmission than before in one cable. TCX-3CHD
introduction is one of TACHII s contributions for 3G transmission, in which we
have succeeded to improve the transmission distance nearly 30% despite of
similar size with 3CFB.
5CFB
TCX-4CHD
Cable O.D.
6.5mm
Cable weight
(100m)
5.1kg
HD-SDI Standard
transmission distance
115m
3G-SDI Standard
transmission distance
TCX-5CHD
Commodity
measured value
abt.32%Lighter
7.5kg
abt.6%Up
108m
abt.10%Up
73m
81m
broadcasting equipments. TACHII has improved 5FCB in view of ① Thinning・
Lightening, ② Transmission distance improvement.
abt.15%Thinner
7.7mm
5FCB is the most frequently used cable between room-to-room in the connection for
Equivalent
level
abt.5%Lighter
abt.22%Up
abt.27%Up
7.7mm
In HD-SDItransmission, customers can enjoy some room in transmission as nearly 30%
space-saving in volume ratio and 32% lightening in weight ratio when employing
7.1kg
TCX-4CHD which has transmission distance equivalent to 5CFB or more. In 3G-SDI
transmission, by any means, the distance becomes shorter than HD-SDItransmission.
132m
93m
TCX-5CHD is the most suitable for 3G-SDItransmission, even though nearly same size
with 5CFB, and 27% longer than 5CFB. TCX-3CHD, TCX-4CHD and TCX-5CHD are the
leading players in over next 3G-SDIera.
Note : The figures are typical, are not the guaranteed value.
Anchoring use Coaxial Cable for 3G/HD-SDI transmission
Comparison TCX-4CHD,TCX-5CHD vs. 5CFB
・
Products
Technical Support
●
TCX-5CHD SDITransmission distance improvement TCX-4CHD Space-saving・Lightening in room-to-room
Coaxial cable for mobile application(3G/HD-SDItransmission)
TACHII feels the strongest need for HD-SDI in mobile application used at
Conversion table for standard transmission distance
by SDI signal-wise in SMPTE specifications
hookup and in studio etc. therefore, TACHII has added, TCX-4CFWS as the
medium size between TCX-3CFWS to TCX-5CFWS in our lineup.
These can
be used because of better flexibility and better balance in transmission
3G-SDI
HD-SDI
SD-SDI
SMPTE 424M SMPTE 292M SMPTE 259M
(2.97Gbps) (1.485Gbps) (270Mbps)
distance / cable size, in the case that 3C not enough but 5C too fat / heavy.
TCX-5CFW is also available, higher bendability has been developed even in
single conductor specification for 100m length HD-SDItransmission which
has not been able to reach so far by TCX-5CFWS. TACHII has employed
original designing to cope with the lower temperature situations in winter,
prepared 4 types as our lineup, customers
can select the most suitable for respective applications.The undermentioned
transmission distance and bendability
to help when cable selections. All those products are also perfectly
51m
TCX-5CFWS
TCX-5CFW
75m
275m
60m
87m
324m
70m
104m
383m
corresponding to 3G-SDI.
Relation between Transmission distance and Flexibility by the Cable-wise
Flexibility
indication
T-4E6S
T-2T2S etc.
Soft
TCX-3CFWS
TCX-4CFWS
TCX-5CFWS
3CFW
made by
other company
TCX-5CFW
TCX-5CFBL
5CFW
made by
other company
Hard
0m
10m
20m
30m
40m
50m
60m
70m
Transmission distance of HD-SDI signal
80m
90m
TCX-5CHD
100m
2
Coaxial cable for mobile application 3G/HD-SDI transmission
indicate the relation between HD-SDI
TCX-4CFWS
●
extremely hardening-resistant
Max.20dB
Max.20dB
Max.30dB
(@1.485GHz)(@742.5MHz)(@135MHz)
TCX-3CFWS
41m
59m
216m
Attenuation
●
Digital microwave link transmission for hookup
・
Products
Techinical Support
Digital Microwave link Transmission Cable for mobile application
The 5D-2W max. transmission distance has seriously dropped to 300m in microwave link operation by current digital method
unlike in the case of existing analog system. Due to the lack of specification on transmission distance like for HD-SDI signal,
maximum transmission distance shows big difference even with same cable by microwave link system maker-wise, and in some
cases the transmission distance shows somewhat difference even by same model because of the product variation. 5D-2W
has shown the said limitations in the microwave link operation with digital method same as the conventional analog system.
Judging from the limitations of 5D-2W coaxial cable in the microwave link operation at hookup points like golf, marathon, soccer
etc. where 5D-2W is used to communicate between control unit and head unit, TACHII has newly develped
TCX-5DFW,TCX-5DFWS coaxial cable for mobile application to materialize long distance transmission in digital microwave link
market, utilizing our accumulated know-how in designing and manufacturing to become 5D-2W in next generation. TACHII has
materialized by TCX-5DFW the maximum long distance transmission with 5D size, keeping equivalent size of 5D-2W.
TCX-5DFWS has materialized easy workability of figure eight shape winding by soft-finished as well as transmission distance
further increase. Both of TCX-5DFW,TCX-5DFWS have combined great appeal and influences never find with conventional
5D-2W.
Comparison between TCX-5DFW,TCX-5DFWS vs. 5D-2W
5D-2W
TCX-5DFW
3
TCX-5DFWS
Commodity actually measured
Cable
Standard O.D.
8.2mm
Equivalent
level
8.0mm
Equivalent
level
8.2mm
Cable
Standard weight
(100m)
11.9kg
Equivalent
level
11.1kg
Equivalent
level
11.5kg
Standard
attenuation
with130MHz
(per 100m)
8.1dB
Standard
loop
resistance
10.2Ω/km
Cable
bendability
△
abt.16%Up
abt.32%Up
abt.6%Up
9.7dB
abt.23%Up
15.1Ω/km
Hard to handle
Composite stranded wire is employed
as the center conductor
Improved
○
In TACHII’s TCX-5DFWS newly developed, our
original composite stranded conductor has been
employed as the center conductor, in similar way
with 5CFWS (the mobile coaxial cable developed
for SDI signal). Because of this, the loop
resistance can be reduced by making the
cross-section area abt. 10% increase comparing
with normal stranded conductor. As the result, the
max. transmission distance could be greatly
increased in digital microwave link transmission.
9.1dB
Auxiliary wire
11.5Ω/km
◎
Base wire
Composite Stranded
wire conductor
Note:The figures are typical, and not the guaranteed value.
General Stranded
wire conductor
Max. transmisson of distance in actual digital microwave link
In digital microwave link transmission at actual hookup point, 300m is used to understand that is maximum number of distance
limitation by 5D-2W conventionally used coaxial cable. But, it is often the case that the hookup point cannot actually operate
by 300m when adding to connection status of connector and aged deterioration of cable. It used to generate a big anxiety at
the hookup point even if 300m transmission materialized.
TACHII surveyed the maximum number of distance in actual digital microwave link transmission by ourselves, and made the
report as per the following graph. These figures should be understood as the measurement example only and were not
guaranteed value by system maker. It is necessary to confirm respectively the transmission distance again when higher system
of transmission distance capacity is developed.
Max. transmission distance example between the control unit and head unit in digital microwave link system(Sending)
Coaxial cable
System
maker
General 5D-2W
In general
0m
Max. transmission distance
300m
400m
300m(Reference)
450m
A
TCX-5DFWS
B
C
TCX-5DFW
500m
410m
460m
A
B
500m
450m
Note:The figures are results in our measuring examples, and do not mean any guarantee by system makers and us.
Tachii has succeeded to greatly increase the max. number of distance to more than 400m with TCX-5DFWS, more than 450m
with TCX-5DFW , comparing with conventional 5D-2W. Judging from the actual operation, the cable is oftenly used on the basis
of 100m, 50m, in some cases 25m, each cable operational distance is about 275∼300m with 5D-2W, about 350∼400m with
TCX-5DFWS , about 400 ∼ 450m with TCX-5DFW, as one of the standards. Prior to the actual employment by digital microwave
link system, please be advised to measure maximum number of distance without fail and then use the cable with the distance
about 25∼50m shorter than measurement result.
attenuation values of IF signal were measured on new product time and every 100times wind/spread. The result was as graphed below, the
attenuation deterioration caused by mobile was not confirmed. For VSWR change in up to 1GHz, every cable scarcely changed, the stability could be
confirmed.
130MHz attenuation value change after wind-up/spread
1.00
5D-2W
<Test conditions>
Cable length:10.0 m(both ends with N-type connector)
0.95
Bobbin diameter:275mm
<Testing methods>
0.90
① Wind cable, protecting connector at both ends,
Attenuation
value
〔dB〕 0.85
・
Products
Technical Support
TACHII made cyclic test of digital microwave link use coaxial cable for wind-up/spread to winding bobbin, as realistic usages. The 130MHz
● Digital microwave link transmission for relay
Cyclic test for wind-up/spread
fix one end to bobbin
TCX-5DFWS
② Spread cable fully upto the maximum elongation by hand
with other end
③ Wind up the spreaded cable by rotating bobbin
TCX-5DFW
④ Repeat ②,③
0.80
Measure the attenuation value and VSWR of the cable
on new product time and every 100 times wind/spread
0.75
0
100
200
300
400
500
600
700
800
900
1000
Repeated numbers of wid-up/spread
〔 Times 〕
New product time
Digital microwave link cable for anchoring to facilities
The requirement was increased to make digital microwave link transmission distance more longer even in cable for facilities like mobile usages.
8D-2W was oftenly used for facilities so far. The transmission distance was understood as 450m after switching to digital system, the distance
was not enough as microwave link system purpose for big facilities like dome studium for baseball and succer etc. and as a result many limitations
were reported in view of the distance between O.B. van to relay terminal board in the facilities.To settel these problems, TACHII developed TCX-8DHF
BW
(PE)and perfectly materialized ultra long distance digital microwave link transmission for anchoring exclusively to the facilities.
●
4
Comparison between TCX-8DHFBW(PE) and conventional 8D-2W
TCX-8DHFBW(PE)
Cable O.D.
12.4 mm
Cable standard weight
(per 100m)
25.9 kg
130MHz standard attenuation value
to become IF signal(per 100m)
7.3 dB
Standard loop resistance between
center conductor and outer conductor
7.33 Ω/km
Weatherability on outdoor use
Equivalent level
12.5 mm
abt. 3% Lighter
24.9 kg
abt. 39% Improved
4.4 dB
abt. 39% Improved
4.46 Ω/km
×
Use material for outdoor only
(Gray PVC sheath)
◎
Note:The figures are typical, not guaranteed value.
TCX-8DHFBW(PE)is exclusively employing polyethylen sheath which has been actually used outdoor purpose more than 20 years in order to minimize
deterioration even in outdoor wiring for long term. This cable is very strong in weatherability against ultraviolet and winds/rains and keeps the caracters as
coaxial cable for long time. TACHII has been trying our very best to provide transmission distance as long as possible and also to keep the highest reliability.
Max. transmission distance example between the control unit and head unit in microwave link system
Coaxial cable
Sending/
Receiving
General 8D-2W
Sending/
Receiving
System
maker 0m
In general
Max. transmission distance
400m
500m
600m
700m
800m
B
950m
750m
C
TCX-8DHFBW(PE)
900m
1025m min.
A
Receiving
B
C
1000m 1100m
450m(Reference)
A
Sending
900m
800m
1025m min.
Note:The figures are results in our measuring examples, and do not mean any guarantee by system makers and us.
Digital microwave link transmission for big size facilities
8D-2W
Commodity actually measured
● Production techniques of Coaxial cables
・
Products
Technical Support
Coaxial cable production
Return loss management
TACHII has been producing coaxial cable, lineuped for 3G-SDI、
HD-SDItransmission in accordance with our internal specifications to manage the
return loss lower. In actual, TCX-HD series, TCX-FWS series, TCX-FBL(FB) series have recorded the return loss as 20.9dB min. ( 3GHz), this means
more than 91% of the sending signal can be transmitted.
This specification has sufficient margin as return loss management figure at both sending/receiving terminals and can be easily compared with the
specifications of SMPTE 424M(3G-SDI), SMPTE 292M(HD-SDI). In actual transmission among equipments, this is our reaction to safely send the
signals for the better return loss management, in consideration of getting worse at the connector and patch panel connection when one cable
oftenly going through by J-J connector to video-patch panel more than once with several coaxial cables in transmission,
The right-hand graph shows the sample image of the monitoring system using
Return loss managing system by the fast Fourie-transform analysis
Fourie-transform analysis for total inspection pf return loss on the production
process of coaxial cable insulator. The system can do total inspection and
monitoring of the return loss value in the designated frequency band.
As long as homogeneous form shaping on the core molding is obtained, very low
and stable value of the return loss shall be shown. Of course, the deterioration of
return loss value against the frequency maybe happened in the central conductor
production process and brading process etc. TACHII s accumulated know-how has
Electrostatic
capacitance changes
on the foamed
core production
Return loss wave
movement against
frrequency change
over time
be exercised in the respective process. TACHII, as the specialized manufacturer of
coaxial cable, shall continue our very best effort so that TACHII can be the most
reliable supplier for our customers.
Return loss management system by the Fourie-transform analysis
The wave pattern in the right-hand graph shows the changes of electrostatic
capacitance on the extrusion of insulation core forming. The changes are processed by
Sample:TCX-5CHD foamed insulator core production
computor on Discrete Fast Fourie Transform (DFFT), the return loss of insulator core is
displayed in real time under the graph. The return loss has been always monitored
whether the cable has been produced within the sufficient level against the
specifications by inputting the designated value internally specified by cable model wise.
3-layer structure - Foamed core production technology
●
5
TACHII has totally employed the force nitrogen gas foaming system under high
pressure into polyethylene resin in the process to produce foamed polyethylene
insulation core for TCX series Coaxial Cable, and also blended polyethylene resin by
Coaxial cable with 3-layer structure
foamed core cross section area
Outer skin layer
(Solid PE layer)
Center conductor
About our policy for hazardous substances to the environment
our original ratio of high density polyethylene (HDPE) with low density polyethylene
(LDPE) for the most suitable cable design and production, in order to meet to the
signal types, cable usages and operation systems.
The skin layer (solid polyethylene layer) is respectively set at the central conductor
side and the outer circumferential of foamed insulation as the foamed insulation
structure. It is vital and indispensable structure for skin layer to adhesiveness
between conductor and foamed insulator and to stabilize foamed polyethylene
molding. As a mater of course, the molding stability directly dictates the stable
return loss.
Inner skin layer
(Solid PE layer)
Foamed polyethylene layer
About our policy for
hazardous substances to the environment
TACHII has been certified by ISO14001 since January, 2003, aiming to
Earth-friendly manufacturing under the environment protection movement.
In addition, TACHII has been manufacturing by using X-ray fluorescence
spectrometer etc. in accordance with RoHS Regulations set in July, 2006.
X-ray fluorescence
spectrometer
made by
SII Nanotechnology
SEA1000AⅡ
RoHS R e g u l a t i o n s
Restriction of the use certain Hazardous Substances
in electrical and electronic equipment in European Union
RoHS Regulations substances and
threshold values as of May, 2011
Controlled substances
Threshold
value
Cadmium
100 ppm
Lead
1000 ppm
Mercury
Hexavalent Chromium
1000 ppm
1000 ppm
PBB
1000 ppm
PBDE
1000 ppm
※ Some substances are exempted.
When looking from just behind direction
<BNCP-K series>
When looking form
When looking
just behind direction,
from an angle
fitting position
behind, fitting
(actual)can be
position (actual)
clearly confirmed.
of both
<BNCP-T series>
connectors can
When identifying at
be confirmed.
side of conventional
connector or at just
behind,it is almost
・
Products
Technical Support
When looking from an angle behind
BNC Connector actual fitting
● Characters of specialized BNC Connector
New fitting confirmation for BNC Connector
impossible to confirm
BNC Connector with
Conventional
new identification
BNC Connector
method
made by TACHII
(BNCP-K series)
(BNCP-T series)
fitting position (actual).
Although so many equipments in broadcasting stations are connected by millions of cables and connectors, all the expected functions can be
properly worked when the cables have been certainly connected. If by any chance, any connector has not been surely fitted, such situation shall
definitely cause accident in broadcasting.
TACHII has materialized to more surely confirm the fitting than ever before by pasting TACHII s original identification seal to the specialized BNC
Connector, developed by us for our coaxial cable TCX series only and made by KINGS,
Previously, it was the actual situation that, in the identification line at the side of connector (BNCP-T series), the fitting could be confirmed from an
angle behind of the connector, however it could not be confirmed from just behind direction and therefore the expected performance could not be
fully worked. For example, most connectors densely wired in the rack could be looked at just behind direction only. It was actually impossible to
confirm from an angle behind.
The new BNC connector(BNCP-K series)has been produced to make it revolutionarily easy to confirm the fitting whichever looking from an angle
behid and just behind. In addition, the identification color has been unified by series wise, the connector model number with adaptable cable name
have been printed so that in actual connector processing field, different size connector mistake can be avoided when possible and the adaptable
cable can be quickly found. With reference to identification seal availability and details of mark color, please check at the list on page 19.
(Note)The final fitting confirmation of connector must be surely done by your hand or tool, the locking position confirmation is purely as a guide.
6
Improvement of reliaility for the BNC Connector, crimping type
BNC Connector「BNCP-T series」has been in the market for our coaxial cable「Specialized for TCX series」. 「BNCP-T series」have been excellent
so far for HD-SDItransmission, in view of VSWR character and mechanical structure. TACHII has jointly developed new BNC Connector「BNCP-K
series」with KINGS in U.S. in order to completely correspond to 3G-SDI transmission and get the higher reliability by inheriting the above
characteristics.
We have materialized VSWR 1.1 max. at 3GHz or less (except some product). We have totally employed Teflon insulator structure originally
developed by KINGS to fix surely center contact keeping absolutely still, as well as to materialize low reflection property by VSWR of course. In
actual comparison with center contact shape, it can be noticed to surely fix the center contact in extremely wide range on Teflon insulator
comparing with used commodities in broadcasting stations. In addition,「BNCP-K series」can totally fix crimping part of center contact (right side of
contact in photo below) perfectly with Teflon insulator. Namely the structure is designed, in order not to cause any movement, to completely contain
with Teflon insulator, excepting the center contact edge part,
As a result, the contact connection is dramatically stabilized when connected and
the transmission block can be prevented.
Comparison of center contact shape
◎
BNCP-K series
new
× Commodities
for broadcasting(example)
Abt. 2.3 times broad area can be fixed
by Teflon insulator than commodities
Locking structure
By this, cable can be locked
and fixed by Teflon insulator.
Additionally the structure is designed
to perfectly fixed by Teflon insulator
to cable crimping part.
Only this area can be fixed by Teflon insulator
with commodities for boradcasting.
Locking structure
By this, cable can be locked
and fixed by Teflon insulator.
Cable is not kept
than constriction part.
Constriction part
In locking structure of center contact in「BNCP-T series」,the favorable comment has been given for snap contact (clicking feeling), which clearly
identify the work, when inserted perfectly on center contact to connector itself. In order to make sure the perfect locking, we have also employed the
improved system to「BNCP-K series」. The feeling on insert, is greatly different by the angle at the above salient cone part and its size. The center
contact gives uncomfortable feeling when actually passing through Teflon insulator, no feeling is confirmed at the time of the conical part being out
of Teflon insulator, and then the clicking feeling on perfect locking can become noticed, same as in 「BNCP-T series」, because locking is finished.
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