Seiko MTP Series User Manual

2.4 TG (TACHO-GENERATOR) OUTPUT CHARACTERISTICS
The TG is a signal generator directly connected to the motor, that generates false sine waves of two
cycles per 1 turn of the motor. These waves are converted by a waveform shaping circuit into
rectangular wave signals, which are used as a pulse impression timing signal for the thermal head.
(1) TG output
Table 2-3 TG Output
4 to 6V 5V
Output voltate (Vp-p) 2.0 to 7.0 3.5 to 6.0
Period (ms) 2.5 to 6.5 3.0 to 5.0
(2) Sample TG waveform shaping circuit
180k
Ω
180k
Ω
Vcc
Timing signal
560P
2SC1740
1SS133
TG
Figure 2-4 Sample TG waveform shaping circuit
TG signal
Timing signal
* Generation of the timing signals depends on the user.
Figure 2-5 TG Timing Signal
2-8

Seiko MTP Series Specifications

General

Brand	Seiko
Model	MTP Series
Category	Printer
Language	English