Continuum Surelite EX 10, Operation And Maintenance Manual

Page: 55 / 114

Section 3: System Operation
996-0207 45
•
9 pin D style male connector
•
Shielded cable (suggest RG-174 coaxial cable)
DAT Mode 1 (± 10 ns jitter)
In this mode the operator can fire the laser by providing a single negative going pulse (5 V
.
0 V).
Jitter time of the laser output with respect to the input fire command will be ±10 ns. Lead time
between the fire command and laser output will be ~180 µs.
1. Flip up external Q-switch toggle located on rear panel of the PCU to INT position (see
page 24 ).
2. Solder center lead of coaxial cable to pin 7 of a D style male connector. Solder shield of
same coaxial cable to pin 2 of the male D connector.
3. Plug D connector made in step 2 to the EXTERNAL connector on front panel of the
PCU.
4. Plug the Surelite into ac supply and toggle on the
AC POWE
R.
5. Turn the keyswitch to the ON position.
6. Press the SELECT button until EoF is displayed on the LED readout.
7. Press UP ARROW button so that display reads Eon .
8. Open exit port shutter at front of the laser bench.
9. Press the START/STOP button located of front panel of the PCU to ON .
10. Press the SHUTTER button located of front panel of the PCU to ON .
11. Input the Fire Command onto pin 7 of the D connector. User circuit should generate a
TTL level pulse that goes from 5V
.
0V for 10 µs each time laser output is desired.
DAT Mode 2 (±1ns jitter)
This mode give the lowest possible jitter between input commands and laser output. Mode 2
requires the input of 2 TTL level negative going signals (5 V
.
0 V, 10 µs wide).
The first TTL signal called Fire Command will cause the laser head lamps to flash. This signal
proceeds lasing by ~180 µs. The second TTL signal called Q-switch Command fires the Pockels
cell and precedes lasing by ~170 ns.
1. Flip down external Q-switch toggle located on rear panel of the PCU to EXT position
(see Figure facing page 3-1).
2. Make the following connections on the D style male connector:
•
Q-switch Command - solder center lead of co-axial cable to pin 6 and solder shield of
same coaxial cable to pin 3 of the connector.
•
Fire Command - solder center lead of a second coaxial cable to pin 7. Solder shield of
secondcoaxial cable to pin 2.