ZLP Electronics DigiMaster Pro3, Руководство пользователя

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Operating the software:
Put your radio into “FSK - RTTY” mode.
Select your mark frequency on the radio and the shift.
Normal settings are 1275 for the mark and 170 for the shift.
Type (or cut-n-paste) your message into the bottom window and click “Tx”
The software will now send the data in the window to the interface module and the interface module
will activate the FSK signal according to the parameters you have set and the radio will transmit
them. As each character is transmitted it will be echoed back to the PC.
Note that not all the characters that you can input are valid in all FSK modes, but the interface will
automatically translate any invalid characters into appropriate valid characters. For instance there are
no lower case characters in 5 bit baudot so the interface will automatically translate any lower case
characters into upper case characters for transmission, BUT the character returned to the PC for
displaying in the top window will always be the same character that you entered.
When you wish to stop transmitting simply click the “Rx” button”.
NOTE: When the interface has no data to transmit, the interface will not hold the radio in PTT,
instead, the interface will deactivate the radios PTT line and will not activate it again unless there is
data to be transmitted, in effect, when there is no data to be transmitted but you have not told the
interface to switch to “Rx” the interface will remain in “Tx standby”. When in “Tx standby”, the
interface will immediately transmit any data that is entered into the lower window. This feature is
useful for contest operations. If you wish to type into the lower Tx window without it being
transmitted you must click the Rx button.
The mFSK software has been developed to control the mFSK module. It has not been developed to
receive or decode transmitted data from your radio. You can use any software to decode the RTTY
that you receive.
Operating FSK is very different to operating AFSK modes, in AFSK your soundcard generates tone for
you and generates them in a waterfall at the frequency that you select when you click on a trace. By
clicking on a trace when operating AFSK you are effectively changing your operating frequency.
This is not the same when you use FSK, in FSK you transmit at your “Mark” frequency which you set
on your radio and you must Rx at the same frequency. When using FSK you should set your receiving
software to match your “Mark” frequency and when changing frequency you should tune your radio’s
Rx frequency to bring the traces to your frequency rather than click on a different trace which would
result in your Tx and Rx being at different frequencies. You should note that many receiving packages
show the Rx signal at the difference between Mark and Space settings rather than at the actually
mark or space frequncy.