Reson Seabat 8101

InstallationThe Ping Hold-off input signal is connected via a connector attached to the dryend of a modified Processor to Head cable. This input signal is opto-isolated, andaccepts TTL, CMOS, RS-232, and similar voltage levels (see Figure 10).Approximately 500 microseconds before the midpoint of each ping, the ping timer(in the sonar head) samples the Ping Hold-off input signal. If the input is OFF, thetimer continues counting and pings normally. If the input is ON, the timer stopscounting, waits for the input to turn OFF, and then resumes counting and pings.Figure 10, Ping Hold-off Details______________________________________________________________________SeaBat 8101 Operator's Manual 2-9 Version 3.02