Sequence Timer

Sequence Timer

A high-speed semiconductor switch is operated after syncing sequence time data sent via an optical link from a PC with output from a short-circuit generator. The PC creates, changes and manages sequence time data as well as displays sequence timing charts and waveforms imported from a digital oscilloscope.


  • PC
  • RS232C optical link
  • Isolation amplifier and digital oscilloscope
  • A 5-rack configuration sequence timer board (controller, switching unit, E/O unit etc. Total 21 units)

Use/Programming language

Use: Used in high-power testing laboratories, as well as for controlling power devices and measurement devices when carrying out input, short-circuit and interruption tests on high-voltage large-capacity switching devices.

Programming language: Visual Basic and C

System benefits and sales points,Technical features

Controls the power output of a power generator to a resolution of one phase degree for up to 100 external devices in sync with the output of a short-circuit generator. In order to achieve this CEW developed a high-speed semiconductor switch. The specifications are as follows;

Operating speed: 3 µsec or less
Switching capacity: AC110V 10A

The operating time for each external device is set by a sequence setting PC and transmitted to the sequence timer board via an optical link. The sequence setting is displayed as a graph on the software screen enabling the operating time to be set by drag and drop operations of a mouse.