CTD-N Technical Manual
page 50
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Figure 24.
Activating the Autolog feature in the Advanced Settings dialog box
Alternatively, the user can use the terminal window to set the CTD-N to Autolog by using the AUTO
command. AUTO=ON turns on the Autolog feature, while AUTO=OFF turns off the Autolog fea-
ture. Store the settings to EEPROM by using the save command, ‘***E’.
CAUTION.
Any change to the instrument’s setting, such as changing the AUTO parameter from
OFF to ON, must be saved or else the change will not be effected when the instrument is
powered OFF.
Once the Autolog feature has been turned on by either method described above, the instrument
must be placed into ‘Run mode’ to activate the Autolog feature. The two methods of going to ‘Run
mode’ are to enter “***R” in the terminal program or to cycle the power to the instrument (on
power up, the instrument enters Run Mode). Cycling the power is sometimes not an option, in
which case, the former method is required.
Autolog Typical Applications and Procedures
Several applications are discussed here, with the steps necessary to properly use the Autolog fea-
ture.
Using the Autolog feature with battery power in conjunction with the battery end-cap
switch
The user can save valuable battery energy by using the Autolog feature in conjunction with TRDI’s
battery end cap switch option for the CTD-N series. This switch breaks and makes the connection
from the battery to instrument electronics. Thus, the user can set up the instrument to Autolog and
then break the battery connection to the instrument to save energy. The instrument is ready at any
time to deploy without any further need to connect the instrument to a personal computer. The user
can simply make the battery connection to the instrument and deploy the instrument. Here are the
explicit steps for setting up the Autolog feature with battery power in conjunction with the battery
end cap switch.
1. Install the battery inside the instrument housing
2. Connect the communications cable from the computer to the instrument. External power
can be connected to save battery power.
The Autolog
Feature is ac-
tivated by
checking this
box.