Specifications

HYDROLOGICAL SERVICES

DL3 100-010 IMP

Issue 2: 15/11/2005

3.2Setup and Configuring the Logger

Once the RRDL-3 logger has been connected to a computer, the parameters can be setup using a

‘dumb’ terminal emulation program. The program should be set for the appropriate baud rate,

parity and handshake, the same as the logger Dip Sw settings, as well as for "local echo on". On

receipt of individual commands from the computer, the logger will respond with the current

parameter setting. (Note that the command keywords permit both upper and lower case characters,

or a combination of both.) A carriage return ( < CR > ,

, Enter Key) immediately following an

entry will action the command. Invalid entries return a "Command Error" response. A list of all

logger commands maybe viewed on thecomputer screenbyusing the unique on-board help system.

Simply type ? . Further help on a command can be obtained by typing the command and then a

question mark and then pressing the Enter key.

Data and parameter securityis provided bymeans ofa user password. Any data or parameters may

be viewed without a password, but parameters may only be altered and data may only be cleared

after the password has been entered correctly. Parameters maybe entered by typing the command

then the equals symbol (=) and then the new parameter and then the Enter key.

3.2.1 Site Information

The "Site Information" (SI) is a user definable 16 character string that allows each logger to have

a unique location name. Alternatively, loggers in a locality may be given the same name and the

rainfall or river channel ID may be used to uniquely identify the loggers data. This allows for easy

identification of dumped data or status window information. See section 4.1.9. for more

information on this command.

3.2.2 System Time/Date

The "Time" (T) and "Date" (D) as well as "Time Offset" (TO) should be checked for accuracy

during installation. Note that the time and date are maintained and updated in the logger

independent of whether the logger is powered or not. (This is provided by a real time clock circuit

a means by which loggers scattered throughout different time zones may be referenced to a

common time zone, which becomes important when the data from the loggers is gathered and

processed at one location.

Hardware Time + Time Offset = Software Time/Date

Note: Events are time stamped to hardware time, messages are time stamped and generated at

software time (If TO=00:00 then Software Time/Date = Hardware Time/Date) See section 4.1.7.

for more information on these commands.

3.2.3 Rainfall Sensor + Parameters

The rainfall sensor or TBRG has several parameters that allow characterisation of the sensor being

used as well as alarm criteria that will be specific to the location that the sensor. The "Rainfall

Channel ID" (RCHID) is a 7 digit user definable number that should be set to uniquely set to

identifythe rainfall channel. The "Rainfall Increment" (RI) parameter defines the bucket capacity