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Chapter 5 Operation Guide
2-Control Connector Pin Assignment, DB-25 plug
1.Pin Function
All control pins are TTL compatible, unless otherwise noted in the pin
description. For the interface designs level ranges of the TTL standard
should be taken into consideration.
Pin#
Description
1-8（D0-D7）
1.Power setting (16-bit bus. 0-FFh in hexadecimal or
0-255 in decimal formats.
2.Least significant bit (lsb) (D0) corresponds to Pin
number 1, Most significant bit (msb) (D7) corresponds to
pin 8.
- 00h(0): Minimum output power
- FFh(255): Maximum output power
- 00h. Disconnected corresponds to 00h.
9
Latch
(Latches power setting into the laser by the rising edge)
10-15
Ground
16，21
Laser alarms
Pin16
Pin21
Situation
L
L
Out of the specified range of
operating temperature
L
H
Normal
H
H
MO abnormal
18
Master Oscillator(MO) signal:
- HIGH: MO on
- LOW or disconnected: MO off
19
Booster signal (ON/OFF input)
- HIGH: Booster on
- LOW or disconnected: Booster off
20
Pulse Repetition Rate (Synchronization) input
Refer to PRR range. Allowed duty cycle is 0.1~0.9.
22
Guide Laser (red diode) ON/OFF input
- HIGH: ON
- LOW or disconnected：OFF
23
Emergency Stop Input
- High: OK (Normal operation)
- LOW or disconnected: STOP
