【描述】XVME-904 串行通信适配器模块

特点:

• 转换TTL信号
• 用户可配置
• 四个DB-25连接器

XVME-904串行通信适配器模块将XVME-420和XVME-428/3串行通信模块的P2连接器上提供的TTL信号转换为标准RS-232C或RS-422A电信号。SCA可由用户针对RS-232C或RS-422A操作进行配置。其RS-232C或RS-422A信号可通过前面板上的四个DB-25连接器接入用户。

SCA模块是一个安装在标准VMEbus双高机箱中的卡。然而，它不连接到背板连接器P1和P2。相反，一根电缆(随套件提供)将XVME-420或XVME-428/3上的P2连接器连接到XVME-904的背面。

XVME-904

Features:
Convert TTL signal
User configurable
Four DB-25 connectors
The XVME-904 serial communication adapter module converts the TTL signals provided on the P2 connector of the XVME-420 and XVME-428/3 serial communication modules into standard RS-232C or RS-422A electrical signals. SCA can be configured by users for RS-232C or RS-422A operations. Its RS-232C or RS-422A signals can be connected to the user through four DB-25 connectors on the front panel.
The SCA module is a card installed in a standard VMEbus dual height chassis. However, it is not connected to the backplane connectors P1 and P2. On the contrary, a cable (provided with the kit) connects the P2 connector on XVME-420 or XVME-428/3 to the back of XVME-904.