Hex Dump; Character Set - Citizen GSX-190 User Manual

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Hex Dump

The hex dump is a useful tool for debugging programs. It shows
the hexadecimal values of the codes actually sent by your
computer, printing 16 codes on each line. In addition, the
character each code represents is printed at the right side of the
sheet. Control codes—codes with hexadecimal value less than
20—are shown as periods. Figure B-4 is an example of the hex
dump printout.
To enter hex dump mode, turn the printer power off. Then, while
holding the QUIET key, turn on the printer. Send data from your
computer.
Exit hex dump printing by turning the printer off.

Character Set

You can print a complete character set for the current emulation.
Simply hold the PRINT and SELECT keys for three seconds. It
will print the character set in the currently selected font.
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Appendix B: Maintenance