User's Manual

DIGITAL CONTROL INCORPORATED
DigiTrak F5 Operator’s Manual 41
Table B3 lists the actual depths in 5 ft (1.52 m) increments in the first column and provides
projected depth values at different transmitter pitches.
Table B3. Determining Projected Depth from Actual Depth and Pitch
Pitch→
Actual
Depth ↓
±10%
(5.7°)
±20%
(11°)
±30%
(17°)
±40%
(22°)
±50%
(27°)
±60%
(31°)
±75%
(37°)
±90%
(42°)
±100%
(45°)
5'
(1.52 m)
5'
(1.52 m)
5' 2"
(1.57 m)
5' 3"
(1.60 m)
5' 6"
(1.68 m)
5' 8"
(1.73 m)
5' 11"
(1.80 m)
6' 3"
(1.91 m)
6' 6"
(1.98 m)
7' 6"
(2.29 m)
10'
(3.05 m)
10' 1"
(3.07 m)
10' 3"
(3.12 m)
10' 7"
(3.23 m)
10' 11"
(3.33 m)
11' 4"
(3.45 m)
11' 9"
(3.58 m)
12' 5"
(3.78 m)
13'
(3.96 m)
15'
(4.57 m)
15'
(4.57 m)
15' 1"
(4.60 m)
15' 5"
(4.70 m)
15' 10"
(4.83 m)
16' 5"
(5.00 m)
17'
(5.18 m)
17' 8"
(5.38 m)
18' 7"
(5.66 m)
19' 6"
(5.94 m)
22' 6"
(6.86 m)
20'
(6.10 m)
20' 1"
(6.12 m)
20' 6"
(6.25 m)
21' 2"
(6.45 m)
21' 11"
(6.68 m)
22' 8"
(6.91 m)
23' 6"
(7.16 m)
24' 9"
(7.54 m)
26'
(7.92 m)
30'
(9.14 m)
25'
(7.62 m)
25' 2"
(7.67 m)
25' 8"
(7.82 m)
26' 5"
(8.05 m)
27' 5"
(8.36 m)
28' 4"
(8.64 m)
29' 5"
(8.97 m)
31'
(9.45 m)
32' 6"
(9.91 m)
37' 6"
(11.43 m)
30'
(9.14 m)
30' 2"
(9.19 m)
30' 9"
(9.37 m)
31' 9"
(9.68 m)
32' 10"
(10.01 m)
34'
(10.36 m)
35' 3"
(10.74 m)
37' 2"
(11.33 m)
39'
(11.89 m)
45'
(13.72 m)
35'
(10.67 m)
35' 2"
(10.72 m)
35' 11"
(10.95 m)
37'
(11.28 m)
38' 4"
(11.68 m)
36' 8"
(11.18 m)
41' 2"
(12.55 m)
43' 4"
(13.21 m)
45' 6"
(13.87 m)
52' 6"
(16.00 m)
40'
(12.19 m)
40' 2"
(12.24 m)
41'
(12.50 m)
42' 3"
(12.88 m)
43' 10"
(13.36 m)
45' 4"
(13.82 m)
47'
(14.33 m)
49' 7"
(15.11 m)
52'
(15.85 m)
60'
(18.29 m)
45'
(13.72 m)
45' 3"
(13.79 m)
46' 2"
(14.07 m)
47' 7"
(14.50 m)
49' 3"
(15.01 m)
51'
(15.54 m)
52' 2"
(15.90 m)
55' 9"
(16.99 m)
58' 6"
(17.83 m)
67' 6"
(11.43 m)
50'
(15.24 m)
50' 3"
(15.32 m)
51' 3"
(15.62 m)
52' 10"
(16.10 m)
54' 9"
(16.69 m)
56' 8"
(17.27 m)
58' 9"
(17.91 m)
61' 11"
(18.87 m)
64' 11"
(19.79 m)
75'
(22.86 m)
Table B4 allows you to calculate the exact projected depth reading as well as the actual
depth using a multiplier. Values for the multiplier, or conversion factor, are provided at
different transmitter pitches.
Table B4. Conversion Factors for Calculating Exact Projected Depth or Actual Depth
Pitch →
±10%
(5.7°)
±20%
(11°)
±30%
(17°)
±40%
(22°)
±50%
(27°)
±60%
(31°)
±75%
(37°)
±90%
(42°)
From Actual to
Projected Depth
1.005
1.025
1.06
1.105
1.155
1.212
1.314
1.426
From Projected
to Actual Depth
0.995
0.975
0.943
0.905
0.866
0.825
0.761
0.701
For example, referring toTable B4, if you have a required (actual) depth of 24 ft (7.32 m), you
can determine the receiver’s projected depth reading at a 30% (17°) pitch. You will use the
first row of conversion factors (From Actual to Projected Depth) to select the corresponding
value for a pitch of 30%, which is 1.06. Multiply this value by the required depth, which is 24,