Installation manual

Simrad SP60
142
851-164574 / C
SL = U Hydr -- M + 20 log r
U Hydrophone dB//1V --12.1
OMNI
M total
dB//1V/µPa
--209.6
20 log r dB 17.5
SL OMNI
dB//µPa
215.0
U Hydrophone dB//1V -- 6 . 1
11°
M total
dB//1V/µPa
--209.6
20 log r dB 17.5
SL 11°
dB//µPa
221.0
Table 5 Source level (SL) for Onmi and 11 degrees
16 Fill in the M total from the Test hydrophone data table into
the Source Level (SL) table.
→ The Test Hydrophone Data table is shown as table 3 on
page 139.
17 Perform the SL calculations as detailed in the table, and
compare the result with the specifications for the sonar.
- SL Omni: 215 ± 2dB//µPa
- SL 11 degrees: 221 ± 2dB//µPa
Measurement termination
The Source Level measurements have now been completed.
Note DO NOT remove the hydrophone from the position used for the
source level measurements. This known position should also be
used for the receiving voltage response (VR) measurements in the
next chapter.