Specifications

2-22 Hardware
Confidential
Notes on resetting the printer using the interface
The printer can be reset using interface pins 6 and 25 by changing the DIP switch setting (see
Chapter 1, “DIP Switches”).
To reset the printer, the following requirements must be satisfied.
❏
DC characteristics:
❏
AC characteristics:
Minimum reset pulse width: TRS 1 msec (minimum)
❏
When using pin 6 (DSR) (DIP switch 2-7 is ON):
Minimum reset pulse width (pin 6)
Reset switching
Signal Line DIP Switch Reset Condition
Pin 6 (DSR) DSW 2-7: ON MARK level input
Pin 25 (INIT) DSW 2-8: ON SPACE or TTL-HIGH level input
Reset DC characteristics
Pin 6 (DSR) Pin 25 (INIT)
Input HIGH voltage V
IH
+3 to +15 V +2 to +15 V
Input LOW voltage V
IL
–15 to + –3 V –15 to + 0.8 V
Input HIGH current: I
IH
5 mA (maximum) 1 mA (maximum)
Input LOW current: I
IL
–5.3 mA (maximum) –2 mA (maximum)
Input impedance: R
IN
3 K
Ω
(minimum)
TRS
H
L
SPACE
MARK