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GS ( A pL pH n m
[Name] Execute test print
[Format] ASCII GS ( A pL pH n m
Hex 1D 28 41 pL pH n m
Decimal 29 40 65 pL pH n m
[Range] (pL + pH × 256) = 2 (pL = 2 , pH = 0)
0 ≤ n ≤ 2 , 48 ≤ n ≤ 50
1 ≤ m ≤ 3 , 49 ≤ m ≤ 51
[Description] • Ex ec ut es a specified test print.
• pL, pH specify (pL + pH × 256) as the number of bytes after pH (n and m).
• n specifies the paper used for the test print.
n Paper source
0, 48 Basic sheet (roll paper)
1, 49
2, 50 Roll paper
• m specifies a test pattern.
m Test pattern
1, 49 Hexadecimal dump print
2, 50 Printer status print
3, 51 Rolling pattern print
[Notes] • The printer ex ecutes a software reset after processing this command.
• Clears the receive and print buff ers.
• Resets all setting values in RAM (the print ar ea, the character styles, and others) that
were in effect at power on. (The data in the NV m emory are not reset.)