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4.3.4 Port Status
DTR (data-terminal-ready)
DSR (data-set-ready)
RTS (request-to-send)
CTS (clear-to-send)
CD (carrier-detect)
For RS-232 specifications, DTR and RTS are for output signals and can
be toggled on and off by double-clicking the labels (such as DTR, DSR,
RTS, CTS, CD) under the red/green marks. However, if you are using
RTS/CTS for flow control to run the test, you will see the RTS mark
appear in black. This indicates that the RTS can no longer be toggled on/
off since it is controlled by driver itself.
4.3.5 Message Logo
On the Message Logo area, you can see the relevant messages about the
port(s) you have selected.
For information about specific messages in this area, please refer to Sec-
tion 4.5, Messages on the Status Bar and Message Logo area.
PCI-COMMUNICATION User Manual 64
A black mark represents that the function is con-
trolled by the driver itself and therefore not control-
lable by software.
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