Power Overview; Figure 3. Ac Power Adapter - Teledyne WORKHORSE Operation Manual

WorkHorse H-ADCP Operation Manual

Power Overview

H-ADCP requires +20 to 50 VDC to operate. The AC Adapter runs on any standard AC power and sup-
plies +48 VDC to run the H-ADCP.
Transmitted power increases or decreases depending on the input voltage (within the voltage range of 20
to 50 VDC).
The transmitted power is decreased approximately 1 DB if the input voltage drops from 42 VDC
to 33 VDC. For a 300 kHz H-ADCP, each DB will result in a decrease in range of one default depth
cell.
Power on Cycle
The power supply must be able to handle the inrush current as well. Inrush current is the current required
to fully charge up the capacitors when power is applied to the H-ADCP.
energy for use during transmit.
amperage until its capacitors are fully charged.
If the power supply limits the current or
cycle will take longer. It can take up to one minute.
inrush current draw, as this may not allow the H-ADCP electronics to start.
AC Power Adapter
The AC power adapter is designed to maintain a 400-ma supply under the H-ADCP's inrush current. The
adapters are 75-Watt supplies, with 48 VDC, 1.5 amp outputs. They will not fall back to 0 amps, 0 volts
under a load. Customer provided power supplies might shut themselves down under such a load; when
that occurs, the H-ADCP will not wakeup.
The inrush current is as high as 3 Amps rms.
the power drop on the cable is
You do not want the power to shut down during the
Figure 3. AC Power Adapter
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
The capacitors provide a store of
The H-ADCP will draw this
significant, then the power on
May 2015
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