Siglent N-N-18L 100 cm 18 GHz N(M)-N(M) cable
The N-N-18L is a 1000 mm armored microwave test cable with an N male connector at both ends, specified from DC to 18 GHz with VSWR below 1.35 and insertion loss of 2.3 dB or better across the range.
N male to N male, specified to 18 GHz
The N-N-18L is a 1000 mm armored microwave test cable with an N male connector at both ends, specified from DC to 18 GHz with VSWR below 1.35 and insertion loss of 2.3 dB or better across the range.
This is a different class of cable from the 6 GHz leads. It is armored, its phase shifts by no more than ±10° at 18 GHz when wrapped around a 50 mm mandrel, and its amplitude holds to ±0.1 dB under the same flexing. Those two figures are what you pay for: they mean the cable does not change the measurement when you move it, which matters as soon as you are working above a few gigahertz or calibrating anything.
At a glance
- Connector 1N male
- Connector 2N male
- FrequencyDC – 18 GHz
- Impedance50 Ω
- Length1 m
Order code N-N-18L · supplied by SIGLENT
What it is for
Measurements that survive being moved
Phase and amplitude stability under flexure are specified, so repositioning the cable does not quietly invalidate what you just measured.
Joining two microwave instruments
N male at both ends, for generator-to-analyser paths on the SSG5000X and the Type-N SNA5000A models.
Armored, for a bench that gets used
6.6 mm armored jacket and a 50.8 mm minimum bend radius. It tolerates the handling a shared bench gives a cable.
Specifications
| Parameter | Value |
|---|---|
| Connector 1 | N male |
| Connector 2 | N male |
| Impedance | 50 Ω |
| Frequency | DC – 18 GHz |
| VSWR | ≤ 1.35 to 18 GHz |
| Insertion loss | ≤ 2.3 dB, DC – 18 GHz |
| Phase stability vs. flexure | ≤ ±10° @ 18 GHz (50 mm mandrel) |
| Amplitude stability vs. flexure | ≤ ±0.1 dB @ 18 GHz (50 mm mandrel) |
| Minimum bending radius | 50.8 mm |
| Cable diameter (with armor) | 6.6 mm |
| Operating temperature | −40 °C to +125 °C |
| RoHS | Compliant |
| Length | 1 m |
Electrical and mechanical figures above are from Siglent’s RF Cable Technical Data Sheet, which covers this part explicitly.
Instruments it connects to
The N male end mates with the RF port on these Siglent instruments — each port taken from that instrument’s own datasheet.
- SSA3000X
- SSA3000X Plus
- SSA3000X-R
- SVA1000X
- SSG3000X
- SSG5000X
- SNA5002A / 5012A / 5004A / 5014A
Not sure which port your instrument has? The RF cables and adaptors page carries the full table.
Other cables in the range
Is this the right cable for your setup?
Tell us the instrument and the device you are connecting, and we will confirm the interface and the bandwidth you need before you order. We are the official Siglent distributor for the European Union, and we also build assemblies to length and connector on request.
More information
Specifications are taken from the manufacturer’s official documentation and are provided for guidance only. They are subject to change without notice, and errors and omissions may occur. The manufacturer’s current documentation is the definitive reference. Prices exclude VAT.