Simrad ER60 - REV B Operator's Manual page 126

Scientific echo sounder application

Table of Contents

Simrad ER60 Operator manual

118

Max. Phase Deviation - Average electrical phase jitter between

samples inside an echo from a single target must not exceed the

max phase deviation setting where max phase deviation is set in

units of phase steps (128 phase steps = 180 electrical degrees).

Recommended setting is 2 - 3 for normal conditions. For weak

echoes in noisy conditions you should allow for more jitter (4 -

10).

Max. Gain Compensation - The correction value returned

from the transducer gain model must not exceed the maximum

gain compensation setting. (This is the one-way maximum gain

compensation. The two-way maximum compensation will be 12

dB). All single targets outside the angle corresponding to the

chosen gain compensation are skipped. Thus one can reduce the

sample volume (beam angle) by choosing a lower value for

maximum gain compensation.

Min Echo Spacing - The is the minimum spacing between two

single echos required for acceptance.

Calibration

Click the Calibration button to start the dedicated calibration

program with single target detections for this layer.

Note that you must click Apply or OK before you start the

calibration program if you have made changes to the single

target detection parameters. This is to ensure that the parameters

have been applied for the layer.

Er60