Rosenberger’s Rmor cable assemblies for test and measurement are very low-loss, air-spaced Polytetrafluoroethylene (PTFE) cable
assemblies suitable for use in demanding factory test applications, general laboratory measurement applications and anywhere
measurement accuracy, consistency and measurement stability are a top priority. Rmor assemblies may often be used in place of
much more expensive VNA cable assemblies.
Rmor cable assemblies for test are armored with a highly-flexible steel spiral construction ensuring high crush resistance and
durability while affording very high
flexibility.
Rmor’s steel spiral armor is wrapped with a durable blue polyurethane jacket. In addition
to the low-loss nature of the cable assemblies and their highly durable armor, each assembly has been measured and characterized;
that data that is included with each assembly that you purchase.
RF performance of Rmor assemblies is available in four main frequency bands of 18 Ghz, 26.5 Ghz, 40 Ghz and 50 Ghz with four
lengths available —18”, 24” ,36 “ and 48”. Connector types, mirroring the frequency ranges above, are Rosenberger’s Precision
SMA, 3.5mm, 2.92mm (K type) and 2.4mm. The Rmor cable assembly’s connectors are all constructed using Rosenberger’s
well-known high quality standards. All connectors for the Rmor test family have stainless steel outer conductors, ensuring a
long-lasting and durable assembly.
Many of these assemblies are available for immediate delivery and are off-the-shelf from our distributor saving valuable time and
offering the convenience that is often lacking with other manufacturer’s products.
•
•
•
•
VNA Test
Rugged & Durable
Factory Test Applications
Phase, VSWR & Insertion Loss Stable
•
•
•
Long Life
18, 26.5,40 & 50 Ghz Assemblies
Cost Effective
Please refer to the table below for the appropriate part numbers. Each assembly listed below features Rmor’s
flexible
steel spiral
construction and durable blue polyurethane jacket.
Rmor Cable Assembly Part Numbers
Table 1
Connector Style
2.4mm M-M
2.4mm M-F
2.92mm M-M
2.92mm M-F
3.5mm M-M
3.5mm M-F
SMA M-M
SMA M-F
N(m)-N(m)
N(m)-N(f)
18” Length
L1D-00457-BB
L1D-00457-BC
L2D-00457-DD
L2D-00457-DE
L4D-00457-FF
L4D-00457-FG
L4D-00457-HH
L4D-00457-HJ
L4D-00457-NN
L4D-00457-NP
24” Length
L1D-00610-BB
L1D-00610-BC
L2D-00610-DD
L2D-00610-DE
L4D-00610-FF
L4D-00610-FG
L4D-00610-HH
L4D-00610-HJ
L4D-00610-NN
L4D-00610-NP
36” Length
L1D-00915-BB
L1D-00915-BC
L2D-00915-DD
L2D-00915-DE
L4D-00915-FF
L4D-00915-FG
L4D-00915-HH
L4D-00915-HJ
L4D-00915-NN
L4D-00915-NP
48” Length
L1D-01220-BB
L1D-01220-BC
L2D-01220-DD
L2D-01220-DE
L4D-01220-FF
L4D-01220-FG
L4D-01220-HH
L4D-01220-HJ
L4D-01220-NN
L4D-01220-NP
Max Frequency
50 Ghz
50 Ghz
40 Ghz
40 Ghz
26.5 Ghz
26.5 Ghz
18 Ghz
18 Ghz
18 Ghz
18 Ghz
Exploring New Directions
Rmor Application Guide
When selecting a high performance cable assembly for test, such as the Rosenberger R-Mor for Test, the
first
thing to consider is the
test frequency range. The test frequency range will be one of the determining factors of the connector style you select along with
cable style and your test equipment (VNA, Spectrum analyzer, amplifiers, etc.). The SMA and type N connectors are rated for 18
Ghz. The 3.5mm connector are rated to 26.5 Ghz and the 2.92mm connector are rated to 40 Ghz. Finally, the 2.4mm connector is
rated to 50 Ghz. All of the connectors used in the R-Mor for Test cable assemblies are metrology grade and made from precision
machined stainless steel.
Next, after frequency range is determined, how long of a cable assembly do you require? Do you require a relatively short cable
assembly (18”) or perhaps one that is 48”? Please refer to table 4 in this brochure for a comparison of insertion loss, connector type,
cable style and frequency range. Generally, the larger diameter of cable, the lower the insertion loss, but the lower the top frequency of
operation. Occasionally, a balance will have to be struck between cable size, connector type and assembly length. For instance, at 10
Ghz, one could easily use an L1-style cable with a 2.4mm connector at 18” in length (insertion loss ~1.05 dB, but if you switched to a
3.5mm L4 assembly, your assembly insertion loss would only be 0.61 dB at 10 Ghz. Please refer to Table 1 for the appropriate part
number. Finally, please refer to the table below for a summary of connector compatibility, mating and frequency characteristics.
Table 2
Style
SMA
3.5mm
2.92mm
2.4mm
Max Frequency
18 Ghz
26.5 Ghz
40 Ghz
50 Ghz
Mateability / Compatiblity
3.5mm, 2.92mm
SMA, 2.92mm
SMA, 3.5mm
1.85mm
Comments
—
When 3.5mm is mated with SMA, frequency response is limited by the SMA
When 2.92mm is mated with SMA, frequency response is limited by the SMA
—
Applications Brief
Why use a high performance Rmor for Test Cable Assembly instead of a standard, solid PTFE interconnect
or polyethylene foam style cable assembly?
Many test and measurement applications require a combination of low-loss (S11), Low VSWR/Return Loss (S12) and perhaps more
importantly, measurement repeatability and consistency. Many low loss (and very low cost) poly foam style cables and many solid
PTFE cables, while very good for basic signal routing applications simply can not be trusted in a test and measurement application
when consistent measurements are required, whether it be at a factory test and measurement station, or the lab. One of the main
reasons the traditional poly foam cable or solid PTFE cable tends to be less stable and consistent when used in a test application is
that fact that the cable’s electrical length changes as the cable is moved and
flexed
during a test session. During test calibration, the
test cable’s electrical length was calculated and calibrated out. Correspondingly, if the electrical length changes too much during test,
erroneous readings will result.
Rosenberger’s Rmor for test cable assemblies use a low-loss, air spaced PTFE dielectric rather than a solid PTFE, or poly foam, and
have been designed and built with a stable electrical length as a prime consideration. This helps to ensure more repeatable and
consistent measurements.
Rmor Cable
For Test, Measurement & Calibration
Rmor For Test Assemblies
— Insertion & Return Loss Stability
Table 3
Cable Style
L1
Frequency Ghz
Insertion Loss Stability
Phase Stability 1
Return Loss Stability
1
< +/- 0.15 dB
< +/- 4 Deg
< / = 0.5 dB
< +/- 0.15 dB
< +/- 3 Deg
< / = 0.5 dB
< +/- 0.05 dB
< +/- 1 Deg
< / = 0.5 dB
10
< +/- 0.15 dB
< +/- 4 Deg
< / = 0.5 dB
< +/- 0.05 dB
< +/- 3 Deg
< / = 0.5 dB
< +/- 0.05 dB
< +/- 3 Deg
< / = 1 dB
18
+/- 0.15 dB
< +/- 4 Deg
< / = 0.5 dB
< +/- 0.05 dB
< +/- 4 Deg
< / =1 dB
< +/- 0.2 dB
< +/- 4 Deg
< / =2.0 dB
26
+/- 0.25 dB
< +/- 6 Deg
< / = 1 dB
< +/- 0.20 dB
< +/- 6 Deg
< / = 2.0 dB
< +/- 0.5 dB
< +/- 6 Deg
< / = 3.0 dB
40
+/- 0.75 dB
< +/- 8 Deg
< / = 2.0 dB
< +/- 0.5 dB
< +/- 8 Deg
< / = 3.0 dB
—
—
—
50
+/- 1.5 dB
< +/- 10 Deg
< / = 3.0 dB
—
—
—
—
—
—
L2
Insertion Loss Stability
Phase Stability 1
Return Loss Stability
L4
Insertion Loss Stability
Phase Stability 1
Return Loss Stability
Notes: (1) All phase stability specifications are for phase stability when the cable is wrapped around a 5 Cm diameter mandrel. (2) All measurements at 25 ° C.
Insertion Loss stability methods are Natural Curl, Method 1. Phase stability verses temperature, for all of the above cable styles, is 1500 PPM from 0°C to 60°C.
Rmor For Test Assemblies
— Typical Total Assembly Insertion Loss
Table 4
Assembly Length in Inches
Frequency Ghz
10
18
26
40
50
18”
1.05
1.44
1.75
2.22
2.52
0.26
0.85
1.16
1.42
1.80
0.15
0.41
0.61
0.84
1.05
0.22
0.50
0.74
1.01
0.18
0.41
0.61
0.84
24”
1.30
1.48
1.79
2.27
2.58
0.24
1.05
1.44
1.75
2.23
0.22
0.50
0.75
1.03
1.30
0.26
0.59
0.88
1.20
0.22
0.50
0.75
1.03
36”
1.79
2.16
2.62
3.33
3.79
0.35
1.45
1.98
2.43
3.09
0.30
0.68
1.03
1.42
1.80
0.35
0.77
1.16
1.59
0.30
0.68
1.03
1.42
48”
2.28
2.84
3.50
4.51
5.26
0.46
1.85
2.52
3.11
3.95
0.38
0.86
1.31
1.81
2.30
0.42
0.95
1.44
1.98
0.38
0.86
1.31
1.81
Assembly Style
2.4mm – T
Type L1
m-m
m-f
2.92mm – T
Type L2
m-m
m-f
1
10
18
26
40
3.5mm – T
Type L4
m-m
m-f
1
5
10
18
26.5
SMA – T
Type L4
m-m
m-f
N–T
Type L4
m-m
m-f
1
5
10
18
1
5
10
18
Table 5
R-Mor Cable Assembly Electrical Characteristics
Impedance
Operating Frequency
V
Velocity of Propagation (Vp)
Shielding Effectiveness @ 1 Ghz
f
Power Rating, CW
L1 Style
L2 Style
L4 Style
Dielectric Withstand V
Voltage
Return Loss Specification
fi
L1Style, 2.44mm connectors, 18”, 24” and 36” Lengths
L2 Style, 2.92mm (K) connectors, 18”, 24” and 36” lengths
L4 Style, RPC N style co
yle,
connector
L4 Style, RPC 3.5 mm connector
co
L4 Style, Precision SMA
> 15 dB @ 50 Ghz, > 18 dB @ 40 Ghz, > 23 dB DC—39 Ghz
> 17 dB @ 40 Ghz, > 19 dB @ 30 Ghz, > 22 dB @ 20 Ghz
> 21 dB @ 18 Ghz, > 23 dB @ 10 Ghz
> 19 dB @ 26 Ghz, > 21 dB @ 18 Ghz
> 18 dB @ 18 Ghz, > 21 dB @ 8 Ghz
105 Watts @ 10 Ghz
W
200 Watts@ 5Ghz
W
600 Watts @ 2 Ghz
W
L1, L2 & L4 Styles: 500 Vrms
50 +/- 1 Ω
L1 Style: DC—50 Ghz
77 %
> 100 dB
Rmor Connector Information
— General
All connectors used in Rosenberger’s Rmor assemblies are Rosenberger precision connectors, suitable for Test, Measurement and
Calibration. These connectors are made to exacting standards and are highly durable.
Table 6
General Cable Assembly Specification
fi
Materials
Center Contact
Outer Conductor
Gaskets
Dielectrics
Armor Information
Construction
Crush Strength
Armor Temperature Range
Abrasion Resistance
UV Stable (outdoor)
Color
Flexibility
Cable Assembly Diameter (over armor)
Flex Life Bending
Minimum Bend Radius*
Operating Temperature
Connector Torque Specifications
Blue polyurethane plastic over stainless steel braid over stainless steel spiral
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