User Guide

http://onsemi.com
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4. After the power supply is ON, connect the Mini USB cable to STR-DMS-CONTROL-GEVB and to computer
5. Once the system is fully powered, user can manipulate and test the performance of the system from Strata / Serial Console
Interface (SCI).
The current DMS allows variation (i.e. variables) of LED current, NCV890204 output voltage and T_ON period (i.e. ON time of
PWM flash pulse) by means of the STR-DMS-CONTROL-GEVB and STR-ASSIST-RS10-GEVB. There are two SW tools
(available within Strata SW tools) for adjusting the above mentioned parameters: i) Serial Control Interface (SCI); ii) Strata
Developer Studio GUI.
SCI:
- Commands sent via command line
- Accept any “floating value” for particular variable from command line, thus easy to bring the DMS into
malfunction if user does not know what he/she is doing
- Allows user to work with variable values outside the SOA area in the Strata GUI
- Intended rather for development and/or “skilled” users
- Takes more time (sending commands) to change variables compared to Strata GUI tool
- Cannot run simultaneously with Strata GUI (to operate via GUI, close the SCI first)
- Command examples:
I_LED (LED DRIVER NCV7694)
{
"cmd": "set_pwm1",
"payload": {
"status": "bool",
"current": "double"
}
}
VOUT (DCDC CONVERTER NCV890204)
{
"cmd": "set_pwm2",
"payload": {
"status": "bool",
"voltage": "double"
}
}
FLASH_PWM (62Hz)
{
"cmd": "set_pwm3",
"payload": {
"status": "bool",
"on_time": "double"
}
}