Belden’s New RG-179 Type
coaxial cable is ideal for
HDTV broadcast trucks —
weighing about 60% less
and taking up to 40% less
space than standard
Mini RG-59/U Type coaxes.
Brilliance®DigiTruck™179DT Lightweight,
Miniature Coax for Broadcast Production Trucks
To comfortably support today’s broadcast
technology, especially HDTV, mobile television
broadcast trucks are densely packed with
equipment and over-the-road axle weight
requirements have become a real concern.
To help lighten the truck’s load, lessen the
amount of space needed, and to improve
air-conditioning air flow and gas mileage,
Belden offers Brilliance DigiTruck 179DT
lightweight RG-179 Type 75-ohm coaxial
cable. This new coax weighs 7.25 pounds per
1,000 feet — 60% less than standard Mini
RG-59/U type cables. Also, 179DT requires
approximately 40% less space than a standard
Mini RG-59/U Type coax (standard Mini
RG-59/U type coaxes have a nominal OD of
0.159 inches vs. 0.100 inches for 179DT).
Belden’s new 179DT coax was designed for
use in analog, SDI, HD video and AES/EBU
digital audio transmissions.
Low Return Loss Characteristics
In A Rugged Construction
Brilliance DigiTruck 179DT Coax has a
guaranteed return loss of 21dB (minimum)
and is sweep tested to 3 GHz. This mimics the
return loss performance of Belden’s most
popular Brilliance precision video cables,
providing 6dB of RL headroom against the
SMPTE 292M specification. 179DT features a
highly crush-resistant, foamed high-density
polyethylene (FHDPE) dielectric to help ensure
the durability of the cable — a particularly
important characteristic for use on television
broadcast trucks.
Versatile Shield
179DT’s foil/braid shield consists of a unique
lightly bonded Duobond® tape that can either
be left bonded to the insulation to simplify
termination with one-piece connectors or
removed for use with multi-piece designs.
An Extremely Compact Cable
With Installable Performance®
When you consider the major benefits
built into 179DT coax: its low return loss
characteristics (that supply ample headroom
below the SMPTE RL requirement of -15dB)
and the high resistance to crushing
provided by the foamed high-density
polyethylene, you have what Belden
calls “Installable Performance.”
BELDENCable
TM
NEW PRODUCT
BULLETIN
NP 207
NP 207
For More Information:
www.belden.com
Belden CDT Electronics Division Technical Support 1- 800 -BELDEN-1 or 1- 800 - BELDEN -3
©Copyright 2004, Belden CDT Inc.
Return Loss Headroom (179DT)
BNC Connector Availability
Return Loss (dB)
Frequency (MHz)
0 360 850 1500 2250 3000
SMPTE 292M (Beyond Industry Standard)
SMPTE
259M
SMPTE Return Loss Limit
Belden Return Loss Specification Limit
Typical Return Loss
0
-10
-20
-30
-40
-50
-60
-70
Maximum Recommended Transmission Distance at Digital Audio Data Rates*
Digital Audio Attenuation
dB/100 Ft. dB/100m
2 MHz 4 MHz 5 MHz 6 MHz 12 MHz 25 MHz
Part No.
179DT 1.34 4.40 1.67 5.48 1.74 5.71 1.99 6.53 2.77 9.09 3.83 12.57
Values reflect typical results.
Ft. m
2 MHz 4 MHz 5 MHz 6 MHz 12 MHz 25 MHz
Part No.
179DT†1493 455 1198 365 1149 350 1005 306 722 220 522 159
179DT†† 597 182 479 146 460 140 402 123 289 88 209 64
*Longer transmission distances are achievable but are contingent upon system component quality and input/output voltages.
†Per AES3-2003 assuming minimum allowable output signal amplitude of 2V and minimum allowable input signal amplitude of 200mV.
††Per AES-3id-2001. When using analog video distribution equipment to implement AES-3id, minimum transmission distances are 40% of AES3 values assuming a minimum allowable output signal amplitude of 1V and minimum allowable input signal amplitude of 320mV.
Ft. mFt. mFt. mFt. mFt. m
dB/100 Ft. dB/100m dB/100 Ft. dB/100m dB/100 Ft. dB/100m dB/100 Ft. dB/100m dB/100 Ft. dB/100m
Maximum Transmission Distance at Serial Digital Data Rates
179DT 504 154 457 139 384 117 242 74 196 60 110 34
The serial digital interconnect standards are designed to operate where the signal loss at 1/2 the clock frequency does not exceed the approximate loss values listed below. The maximum length values shown are based on typical attenuation values for the
cables listed and the following criteria: Maximum length = 30 dB loss at 1/2 the clock frequency: SMPTE 259M, PAL, Widescreen. Maximum length = 20 dB loss at 1/2 the clock frequency: SMPTE 292M. The bit error rate (BER) can vary dramatically
as the calculated distances are approached. BER is dependent on receiver design and the losses of the actual coax used. Distribution and routing equipment manufacturers should be contacted to verify their maximum recommended transmission.
Data Rate: 143 Mb/s
SMPTE 259M
Composite NTSC
Ft. m
177 Mb/s 270 Mb/s 360 Mb/s 540 Mb/s 1.5 Gb/s
Spec:
Application:
Part No.
ITU-R BT. 601
Composite PAL
Ft. m
SMPTE 259M
Component Video
Ft. m
SMPTE 259M
Component Widescreen
Ft. m
SMPTE 344M
Component Widescreen
Ft. m
SMPTE 292M
HDTV
Ft. m
Manufacturer Product No.
ADC BNC-31
Bormar HBC179DT
Canare BCP-C1
Holland Electronics LLC SLC-BNC-179DT
Kings 2065-26-9
Trompeter UPL2000-D7
DigiTruck™Miniature Coax for Broadcast Production Trucks
28.5 AWG Solid .012″Bare Copper • Duobond®Foil (100%)+ 95% Tinned Copper Braid Shield
Gas-injected Foam HDPE Insulation • PVC Jacket (Red, Green, Blue, White, Yellow, Brown, Orange, Gray, Violet, Black)
SDI/HDTV 179DT NEC: 500 152.4 4.2 1.9 28.5 AWG .056 1.42 Duobond .100 2.54 75 77% 17.4 57.4
Digital Video CMR 1000 304.8 8.0 3.6 (solid) Foil (100%)
75°C CEC: .012″+ 95%
CMG FT4 BC TC Braid
108Ω/M′8.9Ω/M′
350Ω/km 29.2Ω/km
BC = Bare Copper • DCR = DC Resistance • HDPE = Foam High-density Polyethylene • TC = Tinned Copper
100% Sweep Tested to 3 GHz.
Guaranteed Return Loss: 21dB Min.
Shielding
Materials
Nom. DCR
Nom.
Imp.
(Ω)
Nominal
Core OD Nominal OD
Inch mm Inch mm
Conductor
(stranding)
Diameter
Nom. DCR
Standard
Unit Weight
Standard Lengths
Lbs. kgFt. m
UL NEC/
C(UL) CEC
Type
Part
No. MHz dB/
100 Ft.
dB/
100m
Nominal
Attenuation
Nominal
Capacitance
pF/mpF/Ft.
Nom.
Vel.
of
Prop.
Description
1 1.18 3.87
5 1.74 5.71
7 2.03 6.66
10 2.25 7.38
67.5 5.51 18.08
71.5 5.66 18.57
88.5 6.20 20.34
100 6.55 21.49
135 7.51 24.64
143 7.69 25.23
180 8.58 28.15
270 10.50 34.45
360 12.20 40.03
540 15.10 49.54
720 17.50 57.41
750 17.80 58.40
1000 20.70 67.91
1500 25.40 83.33
2000 29.60 97.11
2250 31.50 103.35
3000 36.70 120.41
