DATAX 3 MDT
Overview
The Datax3 is designed to provide a rugged and cost effective RS-232 human interface for use in a variety of applications. Four fully EIA/TIA-232 compliant communication ports allow interface to standard host devices.
A high contrast 128 x 64 pixel transflective LCD provides viewing in direct light, whilst its pure white adjustable LED backlight provides optimum viewing in darkness. To conserve power the backlight automatically dims when not in use and returns to the user defined brightness for a programmable period after buttons are pressed or the display is updated.
The ‘classic’ arrangement of eight pushbuttons is implemented as the user interface: four programmable pushbuttons beneath the display for user input with two pairs of scroll buttons either side of the display for left or right hand operation. Tri-colour LED’s adjacent to each pushbutton provide visual prompts and indications.
A built-in tone generator and speaker provide user alerts and an audio input allowing the Datax3 to act as an amplified speaker for external devices.
Features
FLASH based memory for easy in-field software updates
Transflective LCD Display with dimmable LED backlight and wide viewing angle
Single 5V Power Supply via standard USB lead.
On board 250mW audio amplifier for tone generator
Eleven programmable LED’s for visual prompts and indications
Preset page templates provide ergonomic displays of information
Programmable page templates for custom applications
Powerful command sets for easy graphic and character display
User Configurable non-Volatile Settings for:
COM Port Parameters (Baud Rate, etc) per COM Port (4 off)
Keypad Default Assignments
Backlight Timeout seconds
Startup Screen Contents on Power-up
Backlight Intensity
Connections
RS-232 Connector
On the rear panel of the Datax3, a total of four EIA/TIA-232E / V.28 compatible communication ports on 6-way RJ11 sockets are available with pin assignments as follows:
Contact Assignments (External View)
1 - NOT CONNECTED
2 - GND
3 - TXD OUTPUT OF DATAX3
4 - RXD INPUT TO DATAX3
5 - +5V SUPPLY INPUT
6 - N/C
RS-232 Cable
A standard RJ11 male-to-male patch cable may be used between the Datax MK3 and other devices. Click on the image on the right to view full size.
RS-232 Connection to a PC
The following adaptor may be used to connect the standard RJ11 cable shown above to the COM port of a PC.
The adaptor is a standard ‘Modular Adaptor’ and the example shown here is Farnell part number 647-860.
9 Way D-Con - 6 WAY RJ11 Modular Adaptor
RJ11 SOCKET WIRE COLOUR 9-WAY D-CON
1 BLACK N/C
2 YELLOW 5 (PC GND)
3 ORANGE 2 (PC RXD IN)
4 RED 3 (PC TXD OUT)
5 GREEN N/C
6 BROWN N/C
Note that colours shown above refer to the Farnell part 647-860. Alternative adaptors may have different colours.
Connect pin 6 to pin 4 on D-Con for DSR-DTR loop-back and Pin 7 to pin 8 on D-Con for RTS-CTS loop-back