User's Manual

05-4819A01, Rev. 08 LCT 450 Installation/Operation Guide 11
In DCE mode (the default setting), CTS will go high following RTS,
subject to the CTS programmable delay time. If the
DATAKEY com-
mand is set to
ON, keying can be stimulated by the input of characters
at the data port. Hardware flow control is implemented by signaling
the CTS line if data arrives faster than it can be buffered and trans-
mitted.
In CTS KEY mode, the radio is assumed to be controlling another radio.
It will still key based on the RTS line, but the CTS line is used as a key-
line control for the other radio. CTS is asserted immediately following
the receipt of RF data, but data will not be sent out the
DATA INTER-
FACE port until after the CTS programmable delay time has expired.
(This gives the other radio time to key.)
DUMP
Read Current Unit Profile
This command causes all of the programmed settings to be displayed.
EMP [ON/OFF]
Modem TX Audio Pre-Emphasis
This command displays or sets the TX pre-emphasis and RX
De-Emphasis when the radio is operating with the analog mode and
the radio's modem is turned off (
MODEM NONE). It should be set to
match the other radios in the system. The use of pre and de-emphasis
can help reduce the detrimental influence of high frequency audio
noise.
FSET
Receive or transmit frequency min/max value
HELP
User Help
Show available commands.
HREV
Display hardware revision