Field
Description
H1
Command name
H2
Number of characters
between the start and
stop codes
H3
Number of fields
between the start and
stop codes
H4
Start code
1
Time of request
2
Unused
3
Unused
4
Date (ventilator system
clock)
5
Mode setting
6
Active respiratory rate
setting
7
Unused
8
Peak Flow setting
9
Oxygen concentration
setting
10
Unused
8
Table 1-2: SNDA record format
Example
Resolution
MISCA
N/A
706
N/A
97
N/A
0x02
N/A
13:45◆
N/A
◆◆◆◆◆◆◆◆◆◆◆
N/A
◆◆◆◆◆◆◆
N/A
◆◆◆◆◆◆
FEB
23
2008
N/A
◆
◆
◆
PCV◆◆◆
N/A
12◆◆◆◆
0.1 for 4.0
to 9.9
1 for 10 to
60
◆◆◆◆◆◆
N/A
35◆◆◆◆
1
21◆◆◆◆
1
◆◆◆◆◆◆
N/A
Range
Units
Comments
N/A
N/A
5-character field
N/A
N/A
3-character field
N/A
N/A
2-character field
N/A
N/A
ASCII Start
Transmission
character (STX)
N/A
N/A
24-hour clock,
hh:mm◆
N/A
N/A
Always output as
"◆◆◆◆◆◆◆◆◆◆◆
◆◆◆◆◆◆◆"
N/A
N/A
Always output as
"◆◆◆◆◆◆"
N/A
N/A
12-character field,
MMM◆DD◆YYYY◆
S/T◆◆◆
N/A
"STDBY◆" in standby
mode or during
PCV◆◆◆
exhalation port leak
CPAP◆◆
test
AVAPS◆
PPV◆◆◆
HFT◆◆◆
STDBY◆
4.0 to 9.9
BPM
"◆◆◆◆◆◆" in CPAP
mode
10 to 60
Rate setting in other
modes.
"◆◆◆◆◆◆" in HFT
N/A
N/A
Always output as
"◆◆◆◆◆◆"
10 to 80
L/Min
Air flow setting in
HFT.
"◆◆◆◆◆◆" in other
modes
21 to 100
%
N/A
N/A
Always output as
"◆◆◆◆◆◆"