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Click the column headers to sort our online models. For your specific application, please contact JFW for assistance. |
| Handover Test System Example | The below schematic shows an example of a standard 4 X 2 handover test system. Every possible path from Antenna to Terminal has its own programmable attenuator. With this configuration the simulation of handover testing can be achieved.
With this design, every antenna signal is available to every terminal at the same time. In addition, antennas #1 can be attenuated to different levels for terminal #1 and terminal #2 at the same time. The isolation between terminal #1 and terminal #2 is maximized with this configuration. |  | 
LC Handover Test System Example | The below schematic shows an example of a 4 X 2 LC handover test system. With this configuration the simulation of handover testing can be achieved. The LC stands for low cost. LC handover test systems require far fewer programmable attenuators which keeps the cost lower than standard handover test systems. However, the port to port isolation is much less than standard handover test systems. The port to port isolation is solely dependent on the isolation of the power divider.
With this design, every antenna signal is available to both terminals at the same time. The signal from antenna #1 will be attenuated to the same level for terminal #1 and terminal #2. If the isolation between terminal #1 and terminal #2 needs to be greater than 20dB, then you should use the standard handover system described in the previous example. |  |
Capabilities & Options | | Custom Models | | The models listed in the above table showcase some of our standard RF switch assemblies. However, most of JFW’s test system business involves custom designed models. JFW does not charge NRE’s for custom models. We encourage you to email us your specific requirement (sales@jfwindustries.com). We will respond with a ROM (rough order of magnitude) quote in 1-2 days. Please include a block diagram with your request if the test system involves multiple RF components. | | | | Remote Commands | | JFW has standard remote commands for GPIB, Ethernet, and RS-232 controlled models. The command syntax is simple and allows easy control of the RF switch settings. In addition to our standard commands, JFW can also provide customer specific commands upon request. | | | | Test Software | | JFW provides a GUI test program with all Ethernet and RS-232 controlled test systems. The test software for RF switch assemblies has all of the remote commands built in for easy testing. Check out our sample test programs to see for yourself. |
| | | Options | | RF Switches: | | Electro-mechanical (up to 18GHz) or Solid-State (up to 6GHz) | | Input Power: | | High power PIN diode switches up to 300W (cold switch), 250W (hot switch) | | RF Switch Types: | | Failsafe, normally open, self-terminating, indicator circuit | | Remote Control: | | Ethernet, RS-232, GPIB, or TTL | | Manual Control: | | Keypad (w/ LCD) or toggle switches | | Enclosures: | | Benchtop or 19", 23", 24" rack enclosures | | Supplied Power: | | AC, Dual redundant AC, or DC powered | | RF Connectors: | | BNC, TNC, SMA, N, etc. | | Impedance: | | 50 Ohm or 75 Ohm |
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