Broadband Test BT Series0 pages

Broadband Test BT Series
75-ohm Cables for CATV, Video, IPTV and Broadcast Components
MegaPhase 75-ohm test cables offer ideal alternative to expensive OEM cables employed in
bench-top testing of CATV products. A selection of precision 75-ohm connectors compliment the
line. These test cables are designed to survive in rugged test environments and provide stable
performance under flexure enabling repeatable measurements between calibrations. The cables
are available in phase matched sets and can be color coded to reduce interconnect confusion.
Mechanical Data (cont’d)

Electrical Data
Maximum Frequency:

8 GHz

Impedence:

66% nominal

Time Delay:

Cable Construction

1.54 ns/ft (5.05 ns/m)

Shielding Effectiveness:
-110 dB minimum (cable only)

Inner Conductor:

Dielectric Withstanding
Voltage:

Outer Conductor:

Capacitance:

3 kV at 60 Hz

Static Bend Radius:

0.285 in
(.724 cm)
0.5 in (1.27 cm)

Weight with Standard
0.05 lbs/ft (0.067 kg/m)
Jacket /Armor:
Crush Resistance:

Specifications

UHF
L
S

C
X

Standard Finish:

Polyolefin over
Sn-plated Cu Braid

Available Connectors
BNC, F, Type N
(maximum frequency dependent on cable;
other connectors available)

250 lbs/linear in
(44.6 kg/linear cm)

Cable CW Power Handling
Attenuation

Band

GrooveTube® Cu

db/ft

dB/m

Conn.
Loss dB

0.071
0.091
0.116
0.130
0.185
0.203
0.228
0.265
0.327
0.380

0.232
0.300
0.381
0.427
0.608
0.667
0.749
0.869
1.027
1.247

0.006
0.009
0.012
0.014
0.024
0.027
0.032
0.040
0.055
0.070

Note: Typical Insertion Loss dB = (Attenuation)(Length) + 2(Conn. Loss)
Attenuation at any frequency = (0.12762 x √freq GHz) + (0.00238 x freq GHz)

1000
VSWR
400
1.10

200

1.20

100

1.25

40
20

1.30
1.40

Pmax (Watts CW)

0.3
0.5
0.8
1.0
2.0
2.4
3.0
4.0
6.0
8.0

Polyethylene

(a wide variety of other protective finishes
and armors available)

Finished Outer Diameter:

GHz

Solid Ag-plated Cu

Dielectric:

20.5 pF/ft (67.3 pF/m)

Mechanical Data

Frequency

-67 to 185º F
(-55 to 85º C)

75 Ω nominal

Propagation Velocity:

Operating Temp. Range:

10
0.1

0.2

0.3

0.5

1.0

2.0

3.0

5.0

10.0

Frequency (GHz)
Note: Data at ambient temperature and sea level. Power handling of a cable assembly is also connector dependent
and includes variables such as altitude, temperature and system VSWR. See website for connector power handling
standards, including altitude, temperature and VSWR derating.

Excellence in RF Interconnects
2098 West Main Street, Stroudsburg, PA 18360
Tel: 1-877-MegaPhase / 570-424-8400
Fax: 1-877-MegaFax / 570-424-6031
Email: fastquote@megaphase.com / Web: www.megaphase.com