Houston Radar DR1500 Hidden Settings
We dug into Houston Radar SS400 in an earlier post to uncover some hidden settings. It came useful on a few occasions when we had to configure the radars remotely. This time I looked into an older Houston Radar model DR1500. It was superseded by DR600 at the end of 2018, but there are a lot of DR1500’s around. You may come across one integrating our cam into some old VMS or a school sign.
Full list of settings
The list below is an export from Houston Radar desktop config app with a connected DR1500 unit. The list has all available settings:
Config saved at:Thu-Apr-04-2019-11-06-AM
Connected on radar serial port #:0
TIME=Thu Jan 1 01:18:04 1970
These settings are documented in DR1500 User Manual.
- LO / HI
- RS / RA – no format given, see SS400 settings
- MO – only 1st 3 bits are documented
Looking through the list I noticed some undocumented settings. It took some trial and error to find out possible value combinations. They are listed below.
MO bit 4: 0=normal output speed, 1=fast. E.g. M0=38 is “fast output with ASCII on both ports”
MO bit 12: 0 – Instant target speed, 1 – Average speed. E.g. MO=2054 is “True Real Time Average” with the ASCII part.
MO bit 11: set to 1 to favour rejection of false slow targets over detection latency. E.g. MO=1030
MO bit 14: Turn on the tuning fork test. E.g. MO=8198
MO other bits: 0xFFFFFFFFFFFF80xx enable strict rain filter. E.g MO=-32762 stands for ASCII output on both ports and the rain filter on. It is not clear why this setting overwrites bits for other settings listed below.
TA: time average interval in seconds. Min value = 10, default = 30.
MD bit 5: enable / disable 5km/h record logging
an, t0, KY and gn configure hidden super-powers. In other words I could not figure out what they do. Dragons be there.