Installation manual

Final tests and measurements
151
851-164510 / Rev.E
11.2 Source level (SL) measurements
Preparations
The procedure calls for a test hydrophone. Prior to use, fill in
the technical specifications and the appropriate environmental
specifications for the hydrophone to be used. Use the table
provided.
→ Refer to table 3
Hydrophone data
Value Unit Example
Serial number Serial No. 1823860
Date of calibration* month/year 10/96
Calibrated at temperature °C 18°
Sensitivity as transmitter S dB//1µPa/V 119.2
Sensitivity as receiver M dB//1V/µPa --208.9
M e xtension cable (0.7/10m) dB//1V/µPa 0.7
M total = M + M extension dB//1V/µPa --209.6
Table 3 Test hydrophone data
Finally, you need to hook up the test equipement.
→ Refer to figure 42 for the necessary test schematics.
Preparing the operational mode
For measurement of the source level in omni mode, use the
following menu settings.
1 Select the Setup menu.
2 Press the Test... button to access up the System Text
menu.
3 Press the Test Config button.
4 Observe the Test Config submenu appear in the bottom
part of the menu field.
5 Select Source Level.
This command sequence has now automatically set up all the
sonar parameters required to do the source level measurements.