The SY9223-120 is a balun including a resistive adaption part. It transforms an asymmetrical 50 Ω signal (N-connector) into a symmetrical 120 Ω environment (screw terminals).
This balun can be used for transmission measurements according to IEC 61643-21. It is capable to handle a frequency range that is significantly larger than the standard requires.
The excellent frequency response (typically < ±0.25 dB per balun) and the very good standing wave ratio of < 1.2 may be emphasized. To measure the transmission two SY 9223-120 have to be used. Please note: The balun is not galvanically isolated.
| Nominal Frequency range: | 30 MHz – 250 MHz |
| Useable Frequency range: | 10 MHz – 900 MHz |
| Attenuation (50 Ohm) per balun: | 9.5 dB ±1.0 dB |
| Max. power: | 500 mW |
| Impedance transformation: | 50 Ohm : 120 Ohm |
| Dimensions: | 75 mm x 35 mm x 26 mm |
| Weight: | 96 g |
| Input Return loss: | min. 20 dB |
| Input Connector: | 50 Ohm, N-female |
| Output Connector: | 120 Ohm, Screw terminals |
| Housing: | Aluminium |