JFW 75MS‑023 75Ω Matrix Switch 55–900 MHz — Summary
Model: 75MS‑023
Type: 75‑ohm electro‑mechanical RF matrix switch for CATV and 75 Ω test systems.
Covers 55–900 MHz with F‑female RF connectors, absorptive unused ports, rack‑mount enclosure, and remote control options.
Key specifications
| Attribute |
Specification |
| Frequency range |
55 – 900 MHz |
| Nominal impedance |
75 Ω |
| RF connectors |
F female |
| VSWR typical / max |
≤ 1.4:1 typical; ≤ 1.8:1 max |
| Insertion loss typical / max |
~1.5 dB typical; ≤ 3.5 dB max |
| Isolation |
≥ 50 dB minimum; ~70 dB typical |
| RF input power rating |
+20 dBm continuous |
| Switching speed |
~10 ms (after command processing) |
| Control interfaces |
Ethernet (TCP/IP), RS‑232, keypad/LCD |
| Enclosure |
19‑inch rack mount |
(Values are model‑dependent and frequency‑dependent; see official spec sheet for exact curves and tables.)
Performance notes and behavior
- Absorptive unused ports: Unused inputs/outputs are internally terminated to 75 Ω to minimize reflections and simplify system integration.
- Frequency dependence: Insertion loss, VSWR, and isolation vary across the 55–900 MHz band; larger matrix sizes or additional switching stages typically increase loss and VSWR.
- Control latency: Total switching time includes command processing plus mechanical movement; typical end‑to‑end switching is on the order of 10 ms.
Mechanical and control details
- Rack mounting: Standard 19‑inch rack form factor with front keypad and LCD for local control.
- Remote control: Configurable IP via keypad; supports Ethernet (10/100 TCP/IP) and RS‑232 remote command sets for automation.