P 190
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1.2 PRODUCT DESCRIPTION
The P 190 printer has an ABS casing with a top covering the paper roll and print head.
The dimensions of the printer are shown in Figure 2.
The keyboard, located on the front of the printer, consists of the PRINT and FEED keys with their
respective LEDs.
FIGURE 2
• PRINT key. When this key is pressed, if the printer is in parallel pin 2 of J7 comes out of logic state “0”,
while in serial it transmits control character “$0D”; this only happens if it has been enabled by DATA4 to
logic “0” or if switch 5 of the RS232 option is in the ON position. The PRINT key LED only lights up
during printing. If the printer has a 2 Kbyte EEPROM (option, see paragraph 2.4), the contents of the
memorized blocks are trasmitted.
• FEED key. This enables the manual paper feed. If pressed briefly, when the RTCK option is installed,
the time and date are printed. When the FEED key LED lights up, it is to indicate that the logic card
power supply is correct, i.e. that it is over 3.7 V (minimum threshold below which the printer is reset and
the LED goes out).
DESCRIPTION
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