Vaisala HMT140 User Manual page 32

HMT140 User Guide
For example, if you select 15 minutes for the Transmit Period, and 3 for the number of
Tries, the HMT140 will attempt to transmit every 15 minutes. If the transmission does
not complete successfully, it will make two additional transmission attempts, then will
go into 'sleep' mode until the next scheduled transmit period.
• Logging Period: Specify how often the HMT140 will log I/O into the log buffer. If you
are using HMT140 Utility version 1.1.4.0 or higher and require a more frequent log
period, select the Options menu then Advanced, and check the option, Log Periods.
• Enable Beeper/Enable Push Button Control of Beeper: Select the option to enable or
disable the button control of the Beeper (whether you want to be able to turn the
Beeper on or off with the push button on the HMT140). It is also possible to turn the
Beeper on and off by holding down the SERVICE button for approximately five
seconds. The Beeper is enabled by default. There is no external Beeper status
indicator. It must be enabled/disabled with the SERVICE button.
• Enable Proximity Attention Sensor: Select this option to enable or disable the
proximity attention sensor. The sensor is used to wake up the HMT140, turn on the
display (if present), and to force the HMT140 to send a data packet to the host. If your
HMT140 does not have an LCD or is installed in an area where the IR sensor may be
triggered more frequently (due to low-light, high-traffic or transmission obstacles),
turn off the sensor to save battery life.
• Display On Time: Select the length of time the display stays on (choose a minimum
length of time to save battery power).
• HMP110 Polltime: If your HMT140 uses an HMP110 Probe, select how frequently the
HMT140 polls the HMP110 probe (leave at the default setting, two minutes, to save
battery power).
The polling rate should be equal to or faster than the Logging Period,
otherwise you will record the same measurement multiple times.
• Low Battery Alert: Specify at what percentage of battery power remaining you want
the Low Battery indicator to display and notify the host software.
• Stop Xmit at Battery Remaining: Specify at what percentage of battery power
remaining you want the HMT140 to stop transmitting data to the host (to save battery
power). Once this threshold is reached, the HMT140 continues to log data and
function normally, but it will not transmit data using the Wi-Fi radio.
8. Use the Display Contrast interactive control to set the HMT140 display contrast. When the
Up, Down or Set buttons are clicked, the HMT140 Utility will attempt to set the contrast.
The contrast value can only be set when you click Set. The value is not set
with the Update or Retrieve buttons.
9. Click Update. The HMT140 Utility will send these settings to the HMT140 and then reboot.
After the settings are successfully configured, a dialog displays Configured!. If there was
an error sending the settings, the HMT140 Utility will display the error in a popup dialog
window. The center panel in the bottom status bar will display the update status.
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