Kenwood TS-890S In-Depth Manual page 68

09 Software
● Configuring and Reading the Mode
To switch the mode such as USB, LSB, and CW, or to read the current mode, the OM command is used.
For example, if "OM03;" is sent to the transceiver, CW is configured as the receive mode (for simplex, the same mode is
configured for the transmit mode).
For split, to configure CW as the transmit mode for example, "OM13;" needs to be sent. If the number that follows OM
is 0, the receive mode is the target to configure or read, and if the number that follows OM is 1, the transmit mode is the
target to configure or read.
● Acquiring the Transceiver Status Changes (Operating Frequencies, etc.) in Real Time
The Auto Information (AI) function is used.
Activating the Auto Information function by executing the AI command notifies the PC of the TS-890S status changes in
real time.
For example, upon a change of the VFO A frequency, the latest VFO A frequency is automatically notified with the FA
command, and upon a change of the VFO B frequency, the latest VFO B frequency is automatically notified with the FB
command. It is not necessary to check the status from the PC application periodically.
Not only the frequency information but also almost all of the change information, such as the selected modes and filters
and the configuration status of the transmit power, is notified with the corresponding commands in real time. In a self-
programmed PC application, use only required commands from among these notified commands.
To use only required commands, slightly advanced programming is needed. Only the tips are introduced here.
A semicolon (;) always exists at the termination of the command. If the semicolon is received, the data to be received
next is a new command data. Because the first 2 to 3 digits are the command part (the rest is the parameter), check the
command part.
For example, if you need only the VFO A and VFO B frequency information, analyze the parameters that follow afterward
only when the first two digits are "FA" or "FB". If they are not "FA" or "FB", ignore all of the data to be received afterward.
However, at least check whether a semicolon is received every time. If a semicolon is received, return to the first
process. This procedure is repeated thereafter.
In addition, the Auto Information function may notify a number of commands all at once to a PC; hence, you should
manage whether the self-programmed PC application has the sufficient buffer memory size to receive commands. Also,
caution is required, such as not using an old PC with low processing speed.
● How to Acquire the Bandscope Spectrum Information
The DD2 command or DD4 command is used.
The DD2 command notifies the PC of the spectrum information approximately once a second by using the above Auto
Information function. The 640 pieces of spectrum information per screen are notified by dividing them over 32 times.
The DD4 command does not use the Auto Information function and instead notifies the PC of the spectrum information
at approximately 3 times the rate of the DD2 command (approximately 3 times a second). The DD4 command also
notifies the information about the scope display mode, the lower-limit frequency and the upper-limit frequency of the
scope, or the span frequency required for a self-programmed application.
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