Introduction：
ISN S1 is an impedance matching network ISN for measuring shielded coaxial cables produced by Schwarzbeck, Germany and authorized to be sold by Shenzhen EUT TEST agent, which can be used to measure telecommunication and data-processing equipment for coaxial line voltage conduction emission test.The design schematic diagram of ISN S1 is shown in the following figure:
ISN S1 design schematic
As can be seen from the diagram above, the ISN must provide sufficient decoupling from the EUT device under test to the AE auxiliary device, which may be a communication device or a load. The measured forward voltage is coupled to the BNC connector at the top of ISN S1. The final connection is made to an EMI test receiver or spectrometer for testing.
The ISN S1 is also compliant with the CISPR32 requirements for AAN devices, which can be viewed by clicking on the link below:
How to select ISNs and AANs by test standard requirements?
ISN S1 Technical Data:
| Equipment Model | ISN S1 |
| Device name | Impedance matching network ISN |
| producers | Schwarzbeck |
| Frequency range | 150 kHz - 230 MHz |
| Type of cable under test | Shielded coaxial cable for EUT, 50Ω |
| connector | BNC |
| Maximum line/ground voltage | 150 V DC 100 V AC |
| Maximum line current | 1A DC |
| impedance | 150kHz - 30MHz:: 150 Ω ±20 Ω 30MHz - 230MHz: 150 Ω + 60 Ω/-45 Ω |
| phase angle | 0° ±20° |
| agent | Euttest.com |
| test port | 50 Ω BNC |
| Maximum Test Port Voltage | <20V AC |
| voltage divider | 150 kHz - 30 MHz:: 9.5 dB ±1 dB 30MHz-230MHz: 9.5 dB +4 dB/-2 dB |
| Cable-/RJ-45 connector | CAT6 |
| size | 225 mm x 129 mm x 105 mm |
| weight | 1265g |
| Meet the standard | CISPR 22, Annex. D.9 CISPR 32, Annex. G.9 |
Technical data charts:
Voltage divider coefficient plot for ISN S1
Impedance curve of ISN S1
