em-tec BioProTT FlowTrack SL, User Manual, Page: 32 / 54

Command Meaning
T1 <CR>....T7 <CR>
Request to set/use calibration table number 1...7
Please note: If requesting a non-existing table (e.g. selecting table number 7 if there
are only five tables stored) the table will not change.
Cx.yz <CR>
set calibration factor (values between 0.50 and 1.50 with two decimal digits, e.g.
C1.10<CR>)
Table 14: Commands for digital interface of the BioProTT
TM
FlowTrack SL
The digital interface transmits the following ASCII data string every 100 ms (10 Hz):
ee_ss_aaa_p.pp_fffffff_mmmmmmm_sssssss_tttttt_<CR><LF>
Meaning of the Different Bytes:
Byte Meaning Remark
ee hexadecimal error message according to separate table in
chapter 14 " Error Code Information for the BioProTT
TM
FlowTrack
SL "
00 means no error is present
"_" blank delimiter between the different parameters (hex 0x20) Underscore is only used
to represent blank
ss hexadecimal status information
see chapter 11 " Status Information " for more details
aaa acoustic coupling/RSS in %; range 0 to 100%
p.pp calibration factor
ffffff mean flow calculated over 100 ms (output rate of 10 Hz) in ASCII
(range: -999999 ml/min to +999999 ml/min) including calibration
factor
Note*
mmmmmm mean flow calculated over 1 s (output rate of 1 Hz) in ASCII
(range: -999999 ml/min to +999999 ml/min) with calibration
factor applied
Note*
ssssss mean flow calculated over 10 s (output rate of 0.1 Hz) in ASCII
(range: -999999 ml/min to +999999 ml/min) including calibration
factor
Note*
tttttt board temperature in °C (38 = 38°C)
<CR> 0x0d Carriage Return
<LF> 0x0a Line Feed
Table 15: Output of digital interface of the BioProTT
TM
FlowTrack SL
* Note: Beside numerical values, these strings contain the following characters:
• "-", a minus symbol is used for negative values or to indicate blanked out values (character hex "0x2D")
• "^", indicating overflow condition (character hex: "0x5E")
• "v"; indicating underflow condition (character hex: 0x76")
BioProTT™ FlowTrack SL
Page 32 Copyright em-tec GmbH D101-704 BioProTT
TM
FlowTrack SL – User Manual – V 1.0