Signal-R-535-(Interface-Manual操作说明书手册)

R535 InterfaceCommands and UsageThere are five commands available fer controlling the R535,each command is sentwith the first byte being 02h(ctrl-B/STX)followed by the two letter command name,then followed by any information needed by the command.There are three possibleresponses io commands,which are:1.15h (ctrl-U /NAK)seat to any command if something is wrong.206h(ctrl-F/ACK)acknowledgment for commands that do not return afrequency.3.A frequency sent as a 4 digit hexadecimal number.(sce description later).The commands are:FSxoxFrequency SetSets the frequency but does not update the display.FDxoxxFrequency Display Sets the frequency and displays it.FGFrequency GetReturns the curreat frequency.CGceChannel GetReturns the channel frequency.CSccxxeChannel SetSets the memory channel frequency.ce Channel number 0 to 59 sent as a 2 character hex digit 00 to 3B.xox=Frequency sent as a 4 digit hex number and is calculated from the followingformulae:To convert frequency in MHz to number required by R535:If frequency is between 108 MHz and 143 MhzNUMBERfegttency-108)-10005else If frequency is between 220 MHz and 380 MhzNUMBER-c9cn9-220100+819225NB.if 32768 8000H )is added to NUMBER the channel will be locked out.To convert the NUMBER back to a frequency just reverse the process,(when readingchannel information if frequency is greater than 32767 then the channel is locked out).ExamplesTo set the frequency to 131.050 MHz:Nm(131.050-108)·1000/5■23.05·1000/5m23050/5=46101202H Therefore to set the frequency you would send(ctrl-b)FD1202(return)The response should be (ctrl-F)