Ckey [On/Off]; Cts [0-255] - GE MDS 4790 Series Installation & Operation Manual

Continuous
Transmitter Keying
Data Interface
Clear-to-Send
Period
MDS 05-3438A01, Rev. F
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The setting of this parameter affects the timing of
received data sent from the
mitted over the air by the radio is unaffected by the
If data buffering is set to
average latency. The radio sends data bytes from the
port as soon as it disassembles an incoming RF data frame. Average and
typical latency are both below 10 ms, but idle character gaps might be
introduced into the outgoing data flow.
If data buffering is , the radio operates in a seamless mode. That is,
ON
the radio sends data bytes over the air as quickly as possible, but the
receiver buffers the data until enough bytes have arrived to cover
worst-case gaps in transmission. Data buffering might introduce a 2 ms
delay, but the radio will not create any gaps in the output data stream.
This mode of operation is required for protocols such as MODBUS™,
that do not allow gaps in their data transmission.
NOTE: Seamless mode (
where the transmitter's baud rate is greater than or equal to the
receiver's baud rate. Enforcement of this rule is left up to the
user.

CKEY [ON/OFF]

The command enables or disables continuous keying. When
CKEY
is enabled ( ), the radio is continuously keyed. The
ON
normally enabled when the radio is in a full-duplex master configura-
tion.

CTS [0-255]

This command displays or sets the timer value associated with the CTS
line response. Entering the
parameter displays the timer value in milliseconds. Entering the
command with a parameter ranging from 0 to 255 sets the timer value in
milliseconds. The timer value function depends on the radio's operating
mode (DCE or CTS Key). See the
tion about these operating modes.
When the radio is in DCE mode, the timer specifies how long to wait
after the RTS line goes high before asserting the CTS line. A timer value
of zero means the CTS line will go high immediately following RTS.
MDS 4790/9790 Series I/O Guide
connector. Data trans-
DATA INTERFACE
, the radio operates with the lowest possible
OFF
) is intended only for applications
BUFF ON
Continuous Keying
A
B
Page 72
Clear-to-Send Delay
A
B
Page 70
(Clear-to-Send) command without a
CTS
command for more informa-
DEVICE
setting.
BUFF
DATA INTERFACE
screen,
CKEY
command is
CKEY
screen,
CTS
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