The PRO8000 (-4) / PRO800 “ELCH” – macro functions
Pro8000 system / page
48
3.7 The PRO8000 (-4) / PRO800 “ELCH” – macro functions
3.7.1 What is ELCH?
ELCH, the ELectrical CHaracterization of laser components, is a group of embedded
macro functions (block commands), allowing easy acceleration of standard
measurements, e.g. determination of P-I dependency of laser diodes etc.
Benefits of ELCH are mainly:
•
Low IEEE 488 traffic
•
High measurement speed
3.7.2 Basic
settings
Before using the ELCH macro functions, the following basic settings have to be
carried out:
1. The desired module must be selected
2. The polarities of the laser diode and the monitor diode must be set appropriately.
3. The desired operating mode has to be set (constant current or constant power).
4. The thermoelectric coolers must be switched on.
3.7.3 Individual settings for a measurement
The following parameters must be set for an individual measurement:
1. Which parameter shall be changed during measurement? (e.g. laser current)
2. Give the start and stop value for this parameter.
3. In how many steps shall this span be subdivided?
4. How many dependent values are to be measured at every single step?
5. In which mode do you want the system to run: continuous or triggered mode?
6. Which parameter from which module do you want to read out?
7. On which position in the answer-string shall this value stand?
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com