User's Manual

44 TransNET OEM Integration Guide 05-3946A01, Rev. C
DEVICE [DCE, CTS KEY]
Radio-MODEM Behavior
The DEVICE command sets or displays the device behavior of the radio. The
command parameter is either
DCE or CTS KEY.
The default selection is
DCE. In this mode, CTS will go high following RTS,
subject to the CTS programmable delay time. Keying is stimulated by the
input of characters at the data port. Hardware flow control is implemented by
dropping the CTS line if data arrives faster than it can be transmitted.
If
CTS KEY is selected, the radio is assumed to be controlling another radio,
such as in a repeater or tail-end link system. The RTS line is ignored and the
CTS line is used as a keyline control for the other radio. CTS is asserted
immediately after the receipt of RF data, but data will not be sent out the
DATA port until after the CTS programmable delay time has expired. (This
gives the other radio time to key.)
Following transmission of the last byte of data, CTS will remain asserted for
the duration specified by the
CTSHOLD command. CTSHOLD should be set
sufficiently high.
DLINK [xxxxx/ON/OFF]
InSite Diagnostics Link Support
DLINK ON enables use of Diagnostic Link mode and establishes it as the
default protocol on the
DIAG port. Diagnostic Link mode is a special protocol
used to support Network-Wide Diagnostics.
DLINK must be set to ON to
support connection to InSite or to support chained diagnostics between radio
networks even while the radio is in sleep mode.
DLINK OFF disables this
feature. The default setting is
ON.
The following
DLINK baud rates selections are supported:
• 1200 • 4800 • 9600 • 19200 (default)
• 38400 • 57600 • 115200
Example:
DLINK 4800 sets the DIAG port to operate at 4800 bps when diag-
nostics is closed. This setting will not affect the port’s autobaud operation.
Use only of
DLINK ON, will enable the use 19200 or the most recently
programmed value. The default is
DLINK 19200 and DLINK ON.
NOTE 1: The same baud rate must be entered into the InSite Equipment List’s BAUD field.
NOTE 2: The DLINK rate must match the rate of any connected device to the diagnostic port.
This may be either another MDS radio’s diagnostic port, InSite computer, or another
data link device that eventually connects to the InSite computer.
DKEY
Turn Off Radio Transmitter ‘s Test Signal
Disables the transmitter when it is keyed. See also KEY command.