14
Connector (HD-15), Lasers Shipped BEFORE January 1, 2016
NOTE: The use of standard video cables with a HD-15 pin connector is not permitted when
interfacing to this connector.
Designation Pin Description
Comment
HD-15 Pin
1
CTL TXD
RS 232 program line.
HD-15 Pin
2
CTL RXD
RS 232 program line.
HD-15 Pin
3
Modulation Low In
This line grounded or driven independently for
command line isolation. (Page 9)
HD-15 Pin
4
Modulation High In*
TTL signal relative to pin 3. (Page 9)
HD-15 Pin
5
Ready LED drive pin
Signal to drive an LED directly with grounded
cathode. 12V at 25mA
, 470Ω series resistor.
HD-15 Pin
6
Key Switch in
Ground this line through key switch to arm
laser. (Page 10)
HD-15 Pin
7
Fault LED drive pin
Signal to drive an LED directly with grounded
cathode. 12V at 25mA
, 470Ω series resistor.
HD-15 Pin
8
Forward RF monitor
output
Signal use optional. (Page 9)
HD-15 Pin
9
Reflected RF monitor
out
Signal use optional.
HD-15 Pin
10
Ground
System Ground.
HD-15 Pin
11
Lase LED drive pin
Signal to drive an LED directly with grounded
cathode. 12V at 120mA
, 100Ω series resistor.
HD-15 Pin
12
Ground
System Ground.
HD-15 Pin
13
Interlock signal
Ground this line through switch to enable
laser.
HD-15 Pin
14
Ground
System Ground.
HD-15 Pin
15
Temperature Warning
LED drive pin
Signal to drive an LED directly with grounded
cathode. 12V at 25mA
, 470Ω series resistor.
*The laser may be modulated at up to 140 KHz.
