The connectors, which have been specifically designed for this purpose, have a special connection process for low, stable VSWR as well as a particularly effective cable protection against mechanical stress. In addition the connector bodies and nuts are made from stainless steel, which offers a very high number of mating cycles.
The TestLine cables are therefore perfect for use in lab or production areas, in which a high number of reliable signal tests need to be undertaken. Telegartner offers 2 types: 5LL for measurements up to 18 GHz (SMA, N and 7-16) and 4LL for measurements up to 40 GHz (2.92 mm). Each cable is tested separately and delivered with a test report.
Features of TestLine Cables
The special structure of the RF cable with a foamed PTFE dielectric guarantees excellent phase stability and return loss stability when the cable is subjected to bending stress.
Every cable comes with a detailed test report.
Excellent electrical parameters
for frequencies up to 18 GHz (SMA) or 11 GHz (N) at low return loss (-23 dB at 18 GHz). The maximum cable attenuation is only 1.0 dB/m at 18 GHz.
The TestLine cables are assembled with plugs developed especially for test and inspection requirements.
High number of mating cycles
while the transmission properties remain the same thanks to the gold plated centre conductor and a stainless steel body and nut.
Heat resistand and flame retardant
Temparature range -54 °C to +135 °C
TestLine 5 LL 18 GHz
TestLine 4 LL 40 GHz
|connector types||SMA, N special design|
|frequency range||SMA: < 18 GHz; N: < 11 GHz|
|return loss (typical)||up to 4 GHz: -28 dB
up to 10 GHz: -24 dB
up to 18 GHz: -20 dB
|max. cable attenuation (@40 GHz)||1,0 dB/m|
|screen effectiveness||-110 dB max. (@ 1 GHz)|
|phase stability (measured after 90° bend)||< 1,5° @4 GHz - 18 GHz|
|insertion loss (dB/m)||0,22 @ 1 GHz
0,41 @ 4 GHz
0,68 @ 10 GHz
0,94 @ 18 GHz
|connector type||2,92 mm|
|frequency range||< 40 GHz|
|return loss (typical)||bis 4 GHz: -33 dB
bis 10 GHz: -25 dB
bis 18 GHz: -18 dB
bis 26 GHz: -18 dB
bis 40 GHz: -16 dB
|max. cable attenuation(@ 400 GHz)||2,4 dB/m|
|screen effectiveness||-100 dB max.|
|phase stability (measured after 90° bend)||< 4° @ 40 GHz|
|insertion loss (dB/m)||0,33 @ 1 GHz
0,99 @ 6 GHz
1,12 @ 10 GHz
1,58 @ 18 GHz
1,94 @ 26 GHz
2,48 @ 40 GHz
|cable bending radius||> 30 mm|
|cable sheath||FEP, Ø 5,4 mm|
|connector center contact||
|connector outer contact||stainless steal|
|coupling nut||stainless steal|
|plugging cycles||min. 1000|
|operation temperature||-55 °C to -110 °C|
|cable bending radius||> 190 mm|
|cable steath||FEP, Ø 4,2 mm|
|connector center contact||
|connector outer contact||stainless steel|
|coupling nut||stainless steel|
|plugging cycles||min. 500|
|operation temperature||-55 °C to -135 °C|
TestLine Cables have the option of being fitted with a stainless steel wire coil. This coil protects the cable from mechanical stress up to 80 kg/5 cm of cable. Use of this cable protection is particularly useful in production areas, field tests and also in labs where mechanical stress can’t be ruled out.
Due to a specially strengthened strain relief, all 4LL test cables are protected against strain due to sharp bends at the termination point.