Send these commands directly to the receiver or transmitter.
Send newline (linefeed) (ASCII 0x0A) after all commands to make them take effect.
Sending messages not listed may have unpleasant consequences including bricking your unit.
These commands should not be sent in NMEA sentence format except as noted in the section here.
Last updated
Command
Description
Sticky
Mk II Receiver
Mk III Transceiver
Transmitter Transponder
?
?*
Print configuration and menu of user commands
X
X
Mk II / Mk III
A
Obsolete
!
Obsolete
BOOT
Reset CPU into bootload mode. We recommend you instead use the firmware loading capability of the CeruleanTracker application.
X
X
X
Dn
Obsolete
E
Obsolete
IA, IB
Sets operating channel to A or B
X
X
Mk II only
ID
Sets receiver to receive on both channels simultaneously (Dual Channel operation) (autosync versions only)
X
X
Jn
Set magnetic declination to n degrees
X
X
X
K
Send the flash contents to the console
X
X
LOFF
Turns off ID mode
X
X
Mk III Only
Ln
Sets transponder ID to n (n >=0 and n < 16)
X
Mk III Transponder only
Lxxxx
Sets transceiver poll sequence, xxxx is a hexadecimal bit vector from 0000 to FFFF
X
X
Mn
Pause mode, n=1 paused, n=0 resumed
X
X
On, Off
Turn transmitter pinging on and off.
Mk II / Mk III
T COMPASS T NDOF
Set IMU Mode Mk II IMU only
X
X
V3
Retweet GPS NMEA messages, use V0 to turn off (autosync versions only)
X
W
Obsolete
X
Obsolete
Y
Invalidate stored IMU calibration data and then save it next time it is valid (Mk II IMU)
X
X
YZ
Invalidate stored IMU calibration data and then save it next time it is valid (Mk II IMU)
X
X
YCIMO ON
Enable Cerulean IMU
X
X
YCIMU OFF
Enable Mk II IMU
X
X
YACC x,y,z
Set CIMU accelerometer offsets to x,y,z
X
X
YGYR x,y,z
Set CIMU gyro offsets to x,y,z
X
X
YMAG x,y,z
Set CIMU magnetometer offsets to x,y,z
X
X
Zn
Set speed of sound to n meters/second
X
X
X
$xxxxx,
NMEA command carrier (see previous section)
X
X
---
Mk III only, pass thru to co-processor
X
X
===
Mk III only, pass thru to co-processor (using ST bootloader serial parameters)
X
X
+++
Mk III only, end pass-thru mode
X
X
###
Reboot immediately
X
X
X
@n
Set Mk II / Mk III flag. Do not test this to see what happens! It would be very sad if you accidentally bricked your device.
X
X
X
X