Download APEX User Manual, sn.. - Argo Information Centre

Format for message number 2 and higher:
Byte #
− 01CRC, described in section C.
− 02 Message number
− 03 to 31 6 bytes- in sequence and continuing in the next message**
2 bytes temperature
2 bytes salinity
2 bytes pressure
**Note byte pairs will split between messages. For instance byte 31 of message #2 will contain
half of the byte pair for the 5th pressure sample. The other half pressure byte will appear in byte
3 of message #3. See chart below.
Message Format and Sampling Depths
BTYE #
MSG 1
19 & 20
Tp Temperature at Park Depth
21 & 22
Sp Salinty at Park Depth
23 & 24
Pp Pressure at Park Depth
26 & 27
Ps Pressure at surface
BTYE # MSG 2 BTYE #
3 & 4 Profile T
3
5 & 6 Profile S 4 & 5
7 & 8 Profile P 6 & 7
T1
9 & 10
8&9
S1
11 & 12
10 & 11
P1
13 & 14
12 & 13
T2
15 & 16
14 & 15
S2
17 & 18
16 & 17
P2
19 & 20
18 & 19
T3
21 & 22
20 & 21
S3
23 & 24
22 & 23
P3
25 & 26
24 & 25
T4
27 & 28
26 & 27
S4
29 & 30
28 &29
Half P4 30 & 31
31
MSG 3
Half P4
T5
S5
P5
T6
S6
P6
T7
S7
P7
T8
S8
P8
T9
S9
BTYE # MSG 4
P9
3&4
T10
5& 6
S10
7&8
P10
9 & 10
T11
11 & 12
S11
13 & 14
P11
15 & 16
T12
17 & 18
S12
19 & 20
P12
21 & 22
T13
23 & 24
S13
25 & 26
P13
27 & 28
T14
29 & 30
Half S14
31
Sampling continues as shown above relevant to the number of depth table points sampled.
After the last data point in last message a Hex value of FFFF will fill remaining bytes.
Profile TSP are measured at maximum depth prior to ascent.
8