Meriam 4150X ATEX I.S. Certified HART Communicator - Manual (Page 14)

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Backlight (off timer)
To conserve battery life, the 4150 / 4150X allows the user to set the backlight to shut off after a certain
period of keypad inactivity. To change the backlight off timer on the unit, scroll Down to Backlight and
press Chng repeatedly until the desired value is displayed.
The shutoff timer can be disabled or set to shut off after time periods of from 1 minute up to 30 minutes.
NOTE: The Backlight Off Timer is disabled when the optional AC Adapter (P/N Z9B000007) is powering the
4150 / 4150X.
Off Timer (master)
To conserve battery life, the 4150 / 4150X allows the user to set the unit to shut off after a certain period of
keypad inactivity. To change the off timer on the unit, scroll Down to Off Timer and press Chng repeatedly
until the desired value is displayed.
The shutoff timer can be disabled or set to shut off after time periods of from 1 minute up to 2 hours.
NOTE: The Off Timer is disabled when the optional AC Adapter (P/N Z9B000007) is powering the unit.
5 Other
Model information and special settings are available from this menu item. Press number key “5” or arrow
to this menu line and press Chng to select. This reveals menu options for the following:
1 Model Info – select to view model number, serial number, firmware revision, last update date,
number of DOFs loaded with corresponding free memory space and number of HART
configurations saved with corresponding free memory space.
2 Battery – shows present battery setting and optimizes the battery life indicator for the battery type
entered. Press number key “2” to scroll through Alkaline (factory default) and NiMH battery
options or arrow down to this menu item and press Chng soft key repeatedly until the desired
value is displayed.
3 HART – shows present HART
® communication setting. The 4150 / 4150X is a HART ® secondary
master. “Compatible” setting means the handheld will inform the user if another secondary
master is on line. Such situations will require the removal of the other secondary master before
HART communication can occur. “Fast” setting results in faster communications but will
cause interference if a HART
® primary master is on line (example: a HART ® Multiplexer or
I/O). In normal operation the 4150 / 4150X automatically selects the best setting.
4 Enter PC Comm. Mode - When the 4150 / 4150X is connected to a PC for updates via DPC
Manager (see DPC Manager Utility section in this manual), a DB-9 serial cable is used.
Occasionally a DB-9 Serial cable is encountered that does not have a DTR line. The DTR line is
important to the update process because it is used to initiate and confirm communication between
the two machines. If a DB-9 cable without a DTR line is used, the unit must be manually placed
in the Enter PC Comm. Mode. Go to the Main display and select Cfg. Select menu option 5
Other. Select the Enter PC Comm. Mode. Proceed with update and cycle power when the
update is complete. It is recommended to use fresh batteries or an AC adaptor during update
procedures. This mode will automatically time-out after approx. 1 minute of inactivity and return
to the main display.
5 Polling Type – Two user selectable options are available.