Daktronics DataTime Outdoor LED Time & Temperature Displays - Manual (Page 41)

LED Test
Use the LED Test menu item to test the LED digits on the display. The following LCD screen
will be displayed:
LCD Screen Action
LED TEST?
ENTER TO TEST
Press the <ENTER> key to cycle the display digits between
all LEDs on and all LEDs off.
ENTER TO TEST
CLEAR TO EXIT
Press <ENTER> to send the test command to the sign.
Press <CLEAR> to exit the test mode.
Modem Settings
The DM-100 controller has an option to set modem settings, but this method of
communication is not used with standard Time & Temp Displays. If a modem was used, the
next screen would require the user to enter up to 20 phone numbers to call, followed by the
dial-out prefix, the disconnect time in seconds, and if the controller should allow multiple
dialing of displays.
Display Status
The DM-100 controller will also query the display and will respond if it finds the bi-
directional link.
Diagnostics
The DM-100 controller can also do an RS232 Com test and a Loopback test.
DM-100 Controller 37