数据调制解调器卡fom - 9010

光纤调制解调器 射频 固定

fomo -9010, fomo -9011和fomo -9012光纤隔离器调制解调器卡提供低电平控制或接触状态信号的单向传输。除了每个卡的电源和光链路状态外，所有信号的状态都显示在前面板指示灯上。fform -9010可用于触点闭合感测或电压输入。电压输入模式将接受极性敏感的TIA-232, TTL或TIA-422状态指示，以及简单的感应交流或直流电压。12个输入通道中的每一个都可以单独配置。注意，虽然该单元接受某些电气数据标准，但这些单元不适合用于数据使用。任何数据活动都被简单地视为交流电压，并将被标识为“接通”。fomo -9011的所有8个通道都固定为Form C固态触点。即使FOM断电，NC触点仍然短接到C触点。fform -9012在输出通道上支持Form A或Form B固态触点。12个通道中的每一个都可以单独配置，即使FOM断电，表单B联系人仍保持短路状态。 The user can achieve complete electrical isolation for control and status signal in areas of high electrical noise or in/out of RF shielded enclosures (SCIF). The fiber optic cable is not susceptible to induced impulse noise and since signal ground is not carried over the link, the signal is not affected by elevated ground potential from lightning or other sources. The fiber optic cable enhances privacy of communications. A typical link consists of a FOM-9010 at one end and a FOM-9011 or FOM-9012 at the opposite end.