How to program a higher frequency resolution
We are trying to configure a SETUP based on delivered ones :
SETUP STARTFREQ:905 STOPFREQ:905 RESBANDW:3 VIDBANDW:3 SWEEPTIME:10 ATTENFAC:0 REFLEVEL:-20 DISPRANGE:100 PULSEMODE:1 PRINTSTR 03h, "SETUP1" STOP
We haven't found yet how to :
- configure a span of 0.2Mhz
- have Hold mode OFF
- have Peak mode ON
- have Spectrum display mode ON
Concerning span, I tried to use SPANFREQ parameter, found in Spectran API Documentation, in SETUP, but when I compile it writes : "Z 3 S 14: Error "
SETUP STARTFREQ:905 STOPFREQ:905 SPANFREQ:1 RESBANDW:3 VIDBANDW:3 SWEEPTIME:10 ATTENFAC:0 REFLEVEL:-20 DISPRANGE:100 PULSEMODE:1 PRINTSTR 03h, "PIC 2G" STOP
Could you help me ?
Thanks in advance.
Some of those names have changed so better use the hex values.
To set a frequency range with more then 4 digits you need to use a little trick, because the frequency values are limited to 9999 (4 digits).
All you have to do is to set your center frequency (e.g. 905MHz) and then set the span (e.g. 0,2MHz) then it works fine. In your case use:
LDCONST 905 STORESET 01Eh LDCONST 0.200 STORESET 01Fh
With this trick you can set frequency values with up to 8 digits accuracy e.g. this one will offer you a frequency range from 1900,001MHz to 1900,002MHz:
LDCONST 1900 STORESET 01Eh LDCONST 0.002 STORESET 01Fh
All other parameters are found in the API or simply have a look at the hotkey programing of your unit