SonTek/YSI Argonaut-XR Technical Manual - HydroScientific West
SonTek/YSI Argonaut-XR Technical Manual - HydroScientific West
SonTek/YSI Argonaut-XR Technical Manual - HydroScientific West
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<strong>SonTek</strong>/<strong>YSI</strong><br />
Figure 10 shows the basic layout of the CPU board. Important features on the board are listed<br />
below.<br />
• A 5-pin, red connector (labeled User) connects to the <strong>Argonaut</strong> underwater connector for the<br />
external serial communication interface (RS232/RS422).<br />
• A 5-pin connector (labeled Compass) provides the power and RS232 interface to the internal<br />
compass/tilt sensor (if installed).<br />
• A 40-pin edge connector mates above to the analog board. The connector is designed so that<br />
the boards can be connected with either board on top. Except for specialized applications, the<br />
CPU board is installed on bottom.<br />
• A 3-pin, red connector (labeled CTD) connects to the RS232 interface to the optional<br />
integrated CTD sensor.<br />
• The backup battery is installed in the upper right hand corner of the board; this is used to<br />
supply the real-time clock when main power is not available. See §6.1 for details.<br />
• The EPROM containing the software to control velocity calculations, system operation, and<br />
user interface is installed in a socket in the bottom center of the board. Upgrades for the<br />
<strong>Argonaut</strong> CPU EPROM may be periodically available; see §5.6.3 for installation instructions.<br />
• The system CPU, the main computational power of the <strong>Argonaut</strong>, is mounted in the bottom<br />
center of the board, just above and to the left of the CPU EPROM.<br />
• A programmable logic chip (called the CPU timing controller) on the top center of the board<br />
is used to the control the timing of all <strong>Argonaut</strong> operations. The chip is mounted in a socket<br />
to simplify installation. Upgrades for the CPU timing controller may be periodically<br />
available; see §5.6.3 for installation instructions.<br />
• The board name and revision is printed in the bottom right corner.<br />
52<br />
Mounting<br />
Holes (4)<br />
User Serial<br />
Interface (5 pin)<br />
Edge Connector<br />
to CPU Board<br />
(40 pin)<br />
CTD Sensor<br />
(3 pin)<br />
CPU<br />
EPROM<br />
Figure 10 – <strong>Argonaut</strong> Processor CPU Board<br />
ADCMCPU<br />
Rev. C<br />
1997<br />
Real Time Clock<br />
Backup Battery<br />
Compass/Tilt<br />
Sensor (5 pin)<br />
Timing Controller<br />
(CPU)<br />
<strong>Argonaut</strong> Operation <strong>Manual</strong> Firmware Version 7.9 (May 1, 2001)
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