Chapter 5
Programming Via Escape Sequences
5–10
A self-test of the ROM/ RAM can be performed after a reset. The self-test
takes approximately a half second to complete. When enabled, a single beep
indicates the successful completion of the self-test.
Note: Two additional beeps may follow the self test beep if the Laser
Connection Detection function is enabled.
ROM/RAM Self-test Snytax
Esc – y <n> Q
Binary Value
Function
0
1
2
16*
All Functions Disabled
Code ID Characters Transmitted
No–Read Recognition On
ROM/RAM Self Test Enabled
Values of n: 0, 1, 2, 3, 16, 17, 18, 19
* Default
The default value of <n> is 16. The ROM/RAM self test is enabled. The
code ID characters are not transmitted,
no–read recognition is disabled.
Note: This command allows several functions to be selected simultaneously.
To determine <n> choose the wanted functions and add up the corresponding
binary values.
ROM/RAM Self-test Examples
To enable the ROM/RAM self test, send the following escape sequence:
Esc – y 16 Q
Note: The above example assumes that all features other than ROM/RAM
self-test are disabled.
Sending the following escape sequence will enable ROM/RAM self tests and
no–read recognition:
Esc – y 18 Q
Each code type, or symbology, supported by the decoder may be individually
enabled or disabled.
Once a particular bar code symbology is enabled, symbols of that bar code
type will be decoded, provided that the symbol satisfies any other decode
parameters that are configured, such as code length, check characters, etc.
ROM/RAM Self-test
Esc – y 16 Q
Code Selection
Esc – y –<n> F
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