Specifications
47
SK1-21/31
(5)Conditions of input / output signal
Rate value
Item Condition
Min. Typ. Max.
Unit
High input voltage RxD、CTS +2.8 ― +15 V
Low input voltage RxD、CTS -15 ― -2.8 V
High output voltage TxD、RTS
(RL=3KΩ)
+5 ― +15 V
Low output voltage TxD、RTS
(RL=3KΩ)
-15 ― -5 V
5- 3.Power supply
(1) Pin layout
Connector : Hirose DF1BZ-4P-2.5DS or equivalent
Pin Signal Direction Function
1
2
DC+
−
Power supply (+)
3
4
DC-
−
Power supply (-)
※Depending on printing data, large peak current runs in the power cable.
Consider the voltage drop caused by cable impedance and allow enough margin
when choosing the power cable.
1
4