No Wakeup Message; Check The Power - Teledyne WORKHORSE Operation Manual

WorkHorse H-ADCP Operation Manual
er are both using the same baud rate. See the CB-command in the H-ADCP Command and Output
Data Format guide.
•
If the H-ADCP gives a steady "beep" when power is applied, the ">" prompt appears on the
screen, and an "X" appears when additional breaks are sent, this may indicate that the boot code
has been lost. This can happen if you abort while downloading new firmware. Try downloading
the firmware again.

No Wakeup Message

When you send a Break and do not see the wakeup message, you need to isolate the problem to a comput-
er fault, power, cable failure, or an H-ADCP problem.
Check the following items:
1. Connect the H-ADCP to a computer as shown in
cable connections are tight.
2. Is the H-ADCP AC power adapter working? Is the input voltage to the AC power adapter between
100 to 240 VAC? Is the output level 48 VDC?
3. If the H-ADCP is running from a battery, check that the battery voltage is above 30 VDC. H-
ADCPs will work at 20 VDC with at least 400 milli amps; however, both lithium and alkaline bat-
tery packs with voltages below 30 VDC are at or near their end of life, and are approaching use-
lessness.
4. Is the computer hooked up properly? Does it have power?
5. Make sure that your computer and the BBTalk programs are set up to use the communication
port the serial cable is connected to on the computer.
6. In the case where the H-ADCP is only able to accept a SOFT BREAK due to telemetry components
that will not "pass" a HARD BREAK to the H-ADCP and where you can cycle power, TRDI rec-
ommends that you consider removing power for one week. Re-apply power after a week and the
H-ADCP should wake up.
The H-ADCP automatically stores the last set of commands used in RAM. Removing power for
one week allows the RAM to lose its backup power. When power is re-applied, the H-ADCP will
then do a 'cold start' (see
This is something that can be done without recovering the instrument. It assumes power can be
cycled without recovering the H-ADCP and the H-ADCP is still functioning. The cost benefits of
waiting a week needs to be weighed against the cost of divers recovering the H-ADCP.

Check the Power

The following test can be done with a voltmeter to check the power. Check the power going into the H-
ADCP by measuring the voltage on the end of the cable that connects to the H-ADCP at Pins 3 and 7
(GND) (see H-ADCP Cables). The voltage should be +48 VDC (using the standard AC adapter). If not,
check the voltage at the other end of the cable and the AC adapter.
H-ADCP Checks).
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Setting up the H-ADCP
May 2015
System. Check that all
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