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Extras
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Matrix Orbital LK202-25-GW-V Review - Introduction |
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Model: LK202-25
Manufacturer:
Matrix Orbital
Reviewed By:
Miguel
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Serial displays are getting quite popular these
days. There are many types available. From character LCD's
to Graphics LCD's and even VFD displays. Today we look at Matrix
Orbital's most popular character LCD, the LK202-25. Matrix Orbital is a
top manufacturer of high quality, easy to use display modules.
The specific model we will look at is the
LK202-25-GW-V. This 2x20 character LCD display is white backlit with
dark blue characters. Quite attractive indeed and definitely a great
alternative to the boring green LCD displays available. How good does it
look and perform? We will soon see... |
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Contents: |
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The display is sold
separately and comes with a CD and a letter indicating contents in package
and a notice warning you not to connect the display improperly. The
power & serial cables are optional but can be purchased directly from
Matrix Orbital.
Above is a shot of the high
voltage power cable and serial cable needed to run the display.
NOTE: This is not a floppy connector. I recommend you purchase
the power cable from Matrix Orbital to prevent damage to your display. |
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The Display:
Above are the front & back
shots of the module itself. Don't be fooled by the greenish
tint of the LCD. You will soon see what a beauty it really is.
The back of the display reveals the power connector and the RS232 serial
connector. This display is very easy to install. |
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And the Specs: |
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Appearance
- 20 characters x 2 lines
- Module size: 116.0mm(L) x
37.0mm(W) x 27.5mm(T)
- Display size: 82.2mm(L) x
18.2mm(W)
- Character size: 3.20 x 5.55mm
- Yellowish-green backlight
- Black imaging
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Interfaces
- Interface with up to 25-key keypad
- Use 6 General Purpose Outputs
- Communicate over RS232 or I2C
(Connect up to 127 displays over I2C)
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Functional Capabilities
- Display text, horizontal &
vertical bar graphs, and memory functions
- Software controlled speed,
splash/start-up screen, line wrapping, scrolling, contrast,
backlight and time-out setting (up to 180 minutes)
- Software and manual on CDROM
- Memory chip saves settings
- Available in a
PC drive bay insert
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Speed
- RS232 mode : 1200bps to 19.2 Kbps
- I2C mode: Serial transfers of up
to 100 Kbps
- Fully buffered - no delays in
transmission
Power Requirements (Ta =
25°C, Vin = 5.0V)
- Operates at 0ºC to +50ºC
- Supply Voltage: +4.75 to +5.25Vdc
- Wide Voltage Option: +7 to +15Vdc
- Supply Current: 25mA typical
- Backlight Supply Current: 115mA
typical
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Next: Installation |
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