User's Manual

2-12
Part No. 001-4008-101/102
Figure 2-10 Transmit Control Signal Timing Graphic
The Transmit Control default mode is DOX in which the unit begins a transmission as soon as data is
presented to the COM Port. The optional mode is RTS in which the unit begins transmission only when the
RS-232 RTS input pin of the COM Port is raised and continues transmitting until the RTS is dropped.
Selecting RTS also activates the switched option in DCD control (see Figure 2-10).
Figure 2-11 Com/Analog Setup Parameters Screen
Integra-TR Control Signal Timing
RTS
(Request to
send)
CTS (Clear
to send
RTS is raised by the PLC/RTU or computer
RTS causes the transmitter to turn on
(Integra) {Synch. Preamble sent)
The PLC/RTU/Computer wants to send data
CTS sent by Integra after delay
4 Ms Fixed
DCD (Data
Carrier Detect)
TX data
Data is TX’d (transmitted)
RTS
dropped
after last
character (by
PLC etc)
CTS
dropped
after last
character
is on air
Character in to char out
transit time=37mS
Repeater delay=10 preamble
Integra-TR Control Signal Timing
RTS
(Request to
send)
CTS (Clear
to send
RTS is raised by the PLC/RTU or computer
RTS causes the transmitter to turn on
(Integra) {Synch. Preamble sent)
The PLC/RTU/Computer wants to send data
CTS sent by Integra after delay
4 Ms Fixed
DCD (Data
Carrier Detect)
TX data
Data is TX’d (transmitted)
RTS
dropped
after last
character (by
PLC etc)
CTS
dropped
after last
character
is on air
Character in to char out
transit time=37mS
Repeater delay=10 preamble