TRIGGERING OF THE GENERATOR
The generator can operate in internal and external triggering operation modes.
Internal triggering
Internal triggering mode is set by switching EXT/INT toggle switch in INT
position. No any additional triggering generator is required for operation in this
regime. Output pulse repetition rate can be adjusted by FREQUENCY regulation
knob at the front panel of the generator.
External triggering
External triggering mode is set by switching EXT/INT toggle in EXT position.
External triggering pulse should be applied to SYNC IN BNC connector on the
front panel. Recommended triggering pulse duration is 100ns…100µs,
recommended triggering pulse amplitude is +2.4V…+5V. The delay between
triggering pulse front and output pulse (internal generator delay) is about 400 ns.
In case of successful triggering the internal red lamp in HV ON/HV OFF switch
lights on.
The maximum allowable pulse repetition rate in this mode is limited by
FREQUENCY regulation knob at the front panel of the generator.
Therefore, internal generator frequency sets the upper limit for the external
triggering pulses frequency. Please rotate FREQUENCY regulation knob up to the
required position and set corresponding maximum repetition rate.
In case of external triggering the generator can operate in single pulse mode.
Burst mode
Burst operation mode can be simply set by using external pulse generator. Switch
EXT/INT toggle in EXT position and apply long external ENABLE signal to
SYNC IN BNC connector. Output pulse repetition rate is set by FREQUENCY
regulation knob on the front panel of the generator and burst length is determined
by duration of ENABLE signal. For example, if you need burst of ten pulses with
1 ms delay between them please set internal repetition rate to 1 kHz and apply 10
ms ENABLE pulse to SYNC IN connector.
User manual of NRG1001 HV rectangular pulse generator 11
