Page 38 - Echotrac E20 SBES

SERIAL OUTPUT STRING FORMATS

Using dual frequencies
Table 13 applies to the selection of DBT with both frequencies (high and low) active.

Table 13: Echotrac DBT with Both Frequencies Active
Character # Character Description
1 <sp> Always a space

2-3 et, ET Unit indicator: “et” = centimeters, “ET” = tenths of feet

4 <sp>, E, O, D Normally a space, “E” = high frequency error, “O” = low frequency error
(missed return), “D” = high and low error (missed returns)

5 B Frequency indicator: Both high and low

6 <sp> Always a space

7 D High frequency depth data (MSD)

8 D High frequency depth data

9 D High frequency depth data

10 D High frequency depth data

11 D High frequency depth data (LSD)

12 <sp> Always a space

13 D Low frequency depth data (MSD)

14 D Low frequency depth data

15 D Low frequency depth data

16 D Low frequency depth data

17 D Low frequency depth data (LSD)

18 CR Carriage return

Example: <sp>etDB<sp>DDDDD<sp>DDDDD<CR>
= <sp>etDB<sp>54321<sp>54321<CR>
= High and low error, dual freq., 54321cm high-freq. depth, 54321cm low-freq. depth

C.3 DESO25 (for depth)

Table 14 applies to the selection of DESO25 with one frequency (high or low) active.

Table 14: DESO25 with One Frequency Active

Character # Character Description
1 D Always D
2 A, B Frequency indicator: “A” = high, “B” = low
3-10 DDDDDDDD Depth data
11 <sp>, f Space, “f” = feet
12 m, t Unit indicator: “m” = meters, “t” = feet
13 CR Carriage return
14 LF Line feed

Example: DBDDDDDDDD<sp>m<CR><LF>
= DB20.00665<sp>m<CR><LF> or DB684.9470ft<CR><LF>
= Low freq., 20.00665 meters or DB684.9470 feet

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