Board Descriptions - Teledyne WORKHORSE Operation Manual

WorkHorse H-ADCP Operation Manual
AC Power. The deck box accepts input voltages of 98 to 264 VAC, 50 to 60Hz (J27). This input voltage
will be converted to 48 VDC. This is the voltage supplied to the H-ADCP.
12 VDC Car Battery. Use a 12 VDC car battery (J26) when AC power is not available. The deck box con-
verts the voltage to 48 VDC. This is the voltage supplied to the H-ADCP. Use the largest rated amp-
hour battery as possible. A car battery should last one to two days powering a 1200-kHz River H-
ADCP.
DC Power Supply. If you are using an external DC power supply connected to the deck box on J25 (20
to 50 VDC, 3.0 A), the voltage from the external power supply is sent directly to the H-ADCP. This is
useful if you want to increase (higher voltage level) or decrease (lower voltage level) the range of the
H-ADCP. The current requirement for the power supply is listed as a reference. Using a lesser-rated
power supply can cause the voltage level to drop. The H-ADCP will draw only the current it needs.

Board Descriptions

PIO Board.
•
Receives the filtered/internal power.
•
Uses a diode "OR" gate to determine which power source to use (external or internal). With both
sources connected, the OR gate selects the "higher" voltage for H-ADCP use.
•
Limits the in-rush of current to the H-ADCP and provides over- and negative-voltage protection.
Either condition will blow a protective fuse. However, damage could occur to other circuits before
the fuse blows. Please ensure you apply only voltages within the specified range (+20 to +50
VDC).
•
Converts the operating power supply (filtered/isolated 20 to 50 VDC) in a DC-to-DC converter to
the +5 VDC (Vcc) used to power all other H-ADCP circuits.
•
Uses the Power Amplifier circuit on the PIO board to generate the high-amplitude pulse AC signal
that drives the sonar transducers. The Power Amplifier sends the drive signal to the Receiver
Board.
•
RS-232/RS-422 switch.
CPU Board.
•
Real time clock.
•
Generates most of the timing and logic signals used by the H-ADCP.
DSP Board.
•
Contains the PCMCIA recorder slots.
•
Analog to Digital converter.
• Digitizes information from sensors and sends sensor information to the CPU.
Receiver Board.
•
Tuning functions
•
Receiver functions
•
Temperature sensor
•
Interface for pressure sensor
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
May 2015
Page 93