Chapter 4: Programming Set Up 4-13

Brightness Adjustment

Format: 1B 17 nn

Range: 01 nn 05

Description: Adjusts the brightness of the entire display. Individual characters or display positions are not adjusted. On power up, the default brightness setting is 5 (100%).

Nn

Brightness

01

20%

02

40%

03

60%

04

80%

05

100%

Note: This command is not supported by the LCD. The only action taken is to take the display out of Screen Save.

Read Display ID Byte

Format: 1B 18

Returns: 0x8A

Description: This command is a request for the Retail Display to return an identifier. The Retail Display returns one byte (0x8A) that identifies the Retail Display as a 2x20 with 7x9 dot matrix.

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NCR NCR 5972 manual Brightness Adjustment, Read Display ID Byte, Format 1B 17 nn Range 01 ≤ nn ≤, Format 1B Returns 0x8A