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11
Voltage Standing Wave Ratio
The VSWR (Voltage Standing Wave Ratio) is the value
representing the power reflected in a connection. In most
cases, the working frequency range is where VSWR
≤
1.25
1.0
1.1
1.2
1.4
1.3
1.5
500
0
1000
1500
75
50
T.O.S.
f
(MHz)
Note:
value for FFS plug and PCS receptacle mated (with PTFE insu-
lator). Impedance measured 50
with a RG-174 A/U cable and 75
with a RG-179 B/U cable.
-40
-30
-20
-10
0.01
0.1
1
10
100
1000
f
(MHz)
120
100
80
60
(dB)
(dB
)
FFA + PCA
FFS + PCS
FFV + PCS
Screening efficiency (EMC properties) in dB
(transfer impedance in dBohm)
The screening efficiency is the ratio between the electro-
magnetic field inside the connector and a power source
at the outside of the connector (or vice versa).
Cable
group
Recommended cables
Standard
IEC 96-2 CCTU 10-01A
50.3.1
MIL-C-17
RG.58 C/U
RG.142 B/U
Other cable
Imp.
(
)
50 ± 2
50 ± 2
50 ± 2
50 ± 2
50 ± 2
75 ± 3
95 ± 5
75 ± 3
50 ± 2
50 ± 2
50 ± 2
50 ± 2
50 ± 2
50 ± 2
Characteristics
Value
Standard
Method
Contact retention force
Cable pull off force
Connector pull off force
Endurance
Operating temperature
1)
> 18 N
> 100 N
> 90 N
> 1000
cycles
MIL-STD-1344A
MIL-STD-1344A
2007.1
2009.1
MIL-STD-1344A
2016
- 55°C + 260°C
Characteristics
Value
Standard
Method
Impedance
Operating voltage (50 Hz)
Test voltage (50 Hz)
Rated current
Contact resistance
Screen resistance
Insulating resistance
50
75
50
0.7 kV AC
2.1 kV AC
4 A
< 6 m
< 3.5 m
> 10
12
1.09+0.11f IEC 169-1-1
1.08+0.51f IEC 169-1-1
IEC 130-1 1
ère
ed. § 14.5
MIL-STD-1344A
IEC 512-3
MIL-STD-202 F
MIL-STD-1344A
MIL-STD-1344A
3001.1
307
3007
3003.1
VSWR (f. in GHz)
Mechanical and climatical
Electrical
Technical Characteristics
Color of connectors in anodized alu-
minum alloy
When ordering a connector with an alu-
minum alloy, the outer shell color must be
chosen from the table variant listed below
and included in the position of the part
number.
Reference
A
J
N
R
T
V
Color
blue
yellow
black
red
natural
green
Note:
1) to seal both the watertight and vacuumtight models, LEMO
uses and epoxy resin. The operating temperature is -20°C and +80°C for
sealed models.
Note:
measured according to IEC-169-1-3 standard.
6
7
3
1
2
5
2
4
1
4
3
8
8
KX 15
Belden
8262
KX 3A
Belden
Lemo
Belden
8216
CCH.99.281.505
83265
RG.174 A/U
50.2.1
RG.178 B/U
RG.179 B/U
RG.180 B/U
RG.187 A/U
RG.188 A/U
RG.196 A/U
RG.316 /U
50.1.1
75.2.1
KX 21A
75.2.2
50.2.3
50.1.2
50.2.2
Belden
83269
KX 22A
Belden
Dtwyler HF-2114
Storm
H+S
83284
421 099
G02232D-60