The Replay Function - Simrad EY500 Instruction Manual

Operation

1.5 THE REPLAY FUNCTION

The replay function represents a major enhancement in the EY 500 system. The
sample data read from the transceiver may be stored in real time on disk. These
sample telegrams include information regarding the following parameters:
- Frequency
- Single/split system
- Transducer type
- Pulse length
- Bandwidth
To store data to disk, first carry out the following procedure:
- Before starting the EY 500, create the directory where you want the data
stored.
- Select the Disk Menu.
- Select a directory path.
- Select the Disk/Telegram Menu.
- Set the Sample Range to cover the range of interest.
- Turn on the Sample Power Telegram. If a split-beam system is used, both the
Sample Power and the Sample Angle telegrams must be turned on.
- Return to the Disk Menu and turn on Log to start storing of sample data.
Note that the Max. File Size in the Disk Menu may be increased when collecting
sample data, in order to limit the number of files.
The maximum number of samples is limited to 10000. The Transducer Depth
should be at 0 meters.
The data collected in situ may be replayed again and again with new parameter
settings. Thus it is possible to optimize the echo sounder settings by observing
the effect of parameter changes. Typical examples are to find the best possible
parameters for bottom detection and single fish detections.
To start the replay of a file, carry out the following procedure:
- Select the Disk Menu and select the Directory Path.
- Select the replay file name.
- If continuous replay is desired, turn on Replay Forever.
24
P3402/C