Invengo XC-RF868, Руководство пользователя

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5.1.3 External Antenna
As long as the selected antenna meets the following standards, it can be used
with XC-RF868 fixed reader:
● Impedance: 50Ω;
● Voltage standing wave ratio: ≤1.4:1;
● Operating frequency: 840MHz～960MHz.
5.1.4 External RF Cable
There are several schemes for selection of RF cables and connectors:
1. Use thin cables and type-N connector antennas
Cable (2200800009):
RF cable RP TNC-4 (male connector) _KSR240_N-J4Y(male connector)_6m
2. Use thick cables and type-N connector antennas
TNC-to-type-N RF adapter (1110800016):
RF adapter N/(RP)TNC-KK
RF cable N-J7B_SYWV-50-7_N-J7B_10m (2200400001)
RF cable N-J7B_SYWV-50-7_N-J7B_15m (2200400002)
3. Use thick cables and SMA connector antenna
RF adapter N/SMA-KJ (1110800098)
RF cable N-J7B_SYWV-50-7_N-J7B_10m (2200400001)
RF cable N-J7B_SYWV-50-7_N-J7B_15m (2200400002)
The ultra-long RF cable may cause the attenuation of the transmitted signal
and the received echo signal, resulting in the deterioration of the read and write
performance.