x***d
发帖数: 227 | 1 Connecting two DTE devices together requires a null modem that acts as a DCE
between the devices by swapping the corresponding signals (TD-RD, DTR-DSR,
and RTS-CTS).
连接two DCE口，也用null modem 吗？ | z*****n
发帖数: 7639 | 2 My question is why you need to connect 2 DCE ports?
DCE
【在 x***d 的大作中提到】
: Connecting two DTE devices together requires a null modem that acts as a DCE
: between the devices by swapping the corresponding signals (TD-RD, DTR-DSR,
: and RTS-CTS).
: 连接two DCE口，也用null modem 吗？
| x***d
发帖数: 227 | 3 因为更换device server，连接老device server和data logger的cable不好买？
厂家至今没有回复，所以想保留这个连接data logger和老server的cable，老的server
和新的server接口 一个是 male,一个是female,所以老cable不能直接连到新server,
因此打算用一个cable adapter从老的cable连接到新的server，已经买了，straight的
cable adapter但是不work,
【在 z*****n 的大作中提到】
: My question is why you need to connect 2 DCE ports?
:
: DCE
| z*****n
发帖数: 7639 | 4 Well. In DTE-DCE connection, there is a
positive device (DTE) and a passive device DCE.
RTS/CTS is a 2-way handshake between DTE and DCE
and initiated by DTE...
If you have two DCE, the question is both are
passive...
A possible solution is to force RTS/CTS to the
clear level so that the data will be always sent
without flow control.
server
【在 x***d 的大作中提到】
: 因为更换device server，连接老device server和data logger的cable不好买？
: 厂家至今没有回复，所以想保留这个连接data logger和老server的cable，老的server
: 和新的server接口 一个是 male,一个是female,所以老cable不能直接连到新server,
: 因此打算用一个cable adapter从老的cable连接到新的server，已经买了，straight的
: cable adapter但是不work,
|
|
