MICROTRONIX DX-2200, User Manual

Page: 73 / 103

DX-2200
– SD/HD-SDI Text & Graphics Inserter – User Manual
Page 73 of 103
Command Description
CSRD Disable updating graphic fields when GPS data is identical to previous data.
CSKE
Ignore checksum errors on the GPS data. By default sentences with checksum errors
are discarded.
CSKD Verify the checksums on GPS sentences and discard those with bad checksums.
CSTn
Set the update timer in tenths of a second. The update timer causes text to be copied
from GPS fields to Graphic Fields at an interval even when no data is received from the
GPS. A value of zero disables the timer updates. Parameter n has a range of 0 to
100000 tenths of a second.
CSLn
Set the overlay Layer that GPS data is written to. By default Layer 1 (the top layer in the
mix) is used. The valid values for n are 1, 2, and 3.
Note that if the layer is changed, the Graphic Field commands to display fields on the
overlay must be changed accordingly.
CSU
Copy data from GPS fields to Graphic Fields now (for all fields defined by CC
commands).
CSC Clear all GPS data fields now.
CBSnnnnn
Set the baud rate of the GPS port where nnnnnn is the new baud rate. Baud rates from
300 baud to 1000000 are accepted. The default is 4800 baud.
CDn Specify GPS type. The only supported device type is 1.
CRnnn Report the contents of GPS field nnn by echoing the string on the control port.
CFPnn”msg”
Enable a prefix message for Graphic Field nn text when copying from GPS fields to the
Graphic Fields. A maximum of 31 characters are allowed.
CFSnn”msg”
Enable a suffix message for Graphic field nn text when copying from GPS fields to
Graphic Fields a maximum of 31 characters are allowed.
CTA”msg”
Transmit a message to the GPS, appending the asterisk, checksum, and carriage return
/ linefeed. For example CTA"$PGRMO,PGRMC,1
”
CTB”msg”
Transmit a message to the GPS. Only the characters in msg are transmitted. The
checksum, carriage return and line feed must be included in the string.
For example CTB"$PGRMO,GPGSV,0*22\r\n"
CSSE
After video starts (at startup or after a mode change) use the GPS time to set the Frame
Counter Time Clock.
CSSD
Disable setting the Frame Counter Time Clock from the GPS time at startup and when
video mode changes.
CSAE When setting the Frame Counter Time Clock, also set the time format frame counter.
CSAD When setting the Frame Counter Time Clock, no not set the time format frame counter.
CSF
Set a time offset.
GPS data field 59 contains a copy of the time from field 01 “UTC Time of Position Fix”,
that has been adjusted by the correction specified in this command.
The adjustment can be used to shift the clock for local time. It can also be used to
correct for delays between the GPS internal time reference and the GPS transmitting its
time output sentence. The DX-2200 does not have an input for the reference pulse that
is available from some GPS receivers, and uses the start of the NMEA 0183 sentence
containing the time as the reference. The GPS may have up to hundreds of milliseconds
of delay in sending output messages.
When the GPS is used to set the Frame Counter time clock, or the time formatted frame
counter, the adjusted time in GPS data field 59 is used. Therefore any clock adjustment
set with this command also applies to those displays.
The default argument of the CSF command is specified in milliseconds, for example