R2Sonic 2026, Operation Manual

Page: 71 / 254

Page 71 of 254
Version 6.3 Rev r012
Date 05-11-2022
5.6.1.3 Sonic 2026 Low Frequency Option
The Sonic 2026 has a low frequency option, which enables the Sonic 2026 to operate at 90 – 100 kHz
for deeper area surveys. The Sonic 2026 uses a completely new projector that is larger than the
standard Sonic 2024/2022 projector. This projector has other features that are detailed in the
appropriate sections. If the 2026 Extended Range option is installed, the Frequency drop-down will
include the operational frequencies of 90 kHz and 100 kHz.
Figure 59: 90 – 100 kHz Low frequency option for Sonic 2026
5.6.2 Ping Rate Limit
The Sonic MBES can transmit at a rate up to 60 Hz (60 pings per second), this is called the Ping Rate.
At times, it may be desirable to reduce the ping rate to reduce the data collection software file size
or for other reasons. Highlight the box next to Ping Rate Limit, and the ping rate limit drop-down
box will be activated; select a predefined ping rate or enter a manual rate.
Figure 60: Ping Rate Limit
5.6.3 Sector Coverage
The Sonic MBES allows the user to select the swath sector from 10° to 160°. All 256 beams are used,
no matter what the selected sector coverage that is chosen. The smaller the sector, the higher the
sounding density is within that sector. Changing the Sector Coverage can be done on the fly, with
no need to stop recording data or to go offline.