Specifications

HYDROLOGICAL SERVICES
DL3 100-045 IMP
Issue 2: 15/11/2005
When I dial through on a modem and wait more than 2 seconds I don’t get the "Status
Window" displayed.
Check the logger handshake is set to Xon/Xoff.
Check the Carrier Detect line from the modem is connected to the logger.
Check that the Carrier Detect line goes high (+12V) when the modem answers. (When
this line goes high the logger LED should flash).
When I enter a parameter I just get a "Syntax Error" reply.
Check the exact command syntax by using the on-line help. Type comnd? . Now re-enter
the parameter with all leading and trailing zeros.
When I enter a command I just get a "Command Error" reply.
Check that the command you are entering is a valid command by using the on-line help.
Type ? and check the exact spelling of the command.
The batteries don’t last 1 year.
The logger is designed for 1 year operation when logging rain data standalone. Ensure
that alarms are turned off (AL=off) otherwise the logger will wake on an alarm and try to
communicate with a modem and possibly wait in a powered up state between retries. Also
ensure that the scheduled send command is off (SEND=00/0/00) so agin the logger
doesn’t repeatedly try to talk to a modem.
If the logger is connected to a modem for alarm and scheduled messages, you will not get
1 year life from the batteries. External batteries and/or a solar array should be used to
power the logger.
Excessive activity on a river quadrature sensor (tidal river) could also cause the batteries
to go flat quicker than normal.
Ensure that after a communication session with the logger you use the BYE command to
force the logger back to sleep, rather than let the 1 or 5 minute timeout cause the logger
to go to sleep, as the battery power is considerably drained during this 1 or 5 minute
period. Keep the communication sessions to a minimum to conserve power.
The logger should spend most of its life asleep. In this mode the logger consumes about
200uA. This can be checked by removing one battery, (ensure remaining batteries have
full capacity to power the logger) and using a digital ammeter short out where the
removed battery came from. When the logger powers up (LED flashes 4 times) it should
consume about 75mA. Force the logger to sleep by typing the BYE command, the logger
should now consume about 200uA.