5
Kentech Instruments Ltd., Isis Building, Howbery Park, Wallingford, Oxfordshire, OX10 8BD, U.K.
Last Modied 11-2-20
4 ABBREVIATIONS
EHT or eht Extra High Tension (high voltage)
EMC Electromagentic Compatibility
PRF Pulse Repetition Frequency
PSU or psu power supply unit
SD Standard Deviation
w.r.t. With Respect To
5 CAUTION
With an appropriate load, this unit is safe for use by an educated user in a laboratory
environment. You are warned, however, that the radiation from the system with an antenna or
inappropriate load attached, can damage sensitive equipment and corrupt data stored in computer
and microprocessor based systems. It can cause terminal failure of vital medical electronic
systems, such as pacemakers. This equipment is supplied on the understanding that the user will
analyse these risks, accept responsibility for them, and take appropriate precautions in the use of
this instrument.
The output from this pulse generator will destroy many types of power attenuators and electronic
test equipment. It is the user’s responsibility to ensure that any apparatus connected to the output
is suitably rated.
Kentech Instruments Ltd. accepts no responsibility for any damage or liabilities incurred in the
operation of this equipment.
Please read the manual before applying power.
6 INTRODUCTION
Our range of solid state pulsers (ASG, CPS, HMPS and PBG series) allows very high voltage, fast
rising pulses to be obtained from compact bench top units. Voltage pulses as short as 100ps FWHM,
in excess of 4kV peak voltage into 50Ω, and with a pulse repetition frequency (PRF) >1kHz can
be produced. The performance of our compact, convenient and reliable pulsers is to our knowledge
exceeded only by laser driven photoconductive switches in terms of voltage switching speeds.
These pulsers will nd applications in many elds such as high speed camera research, electro-optic
switching, triggering systems and radar.
A large range of output pulse lengths can be provided by the incorporation of internal passive pulse
forming networks. There is very little jitter in the output of the pulsers and two independent pulsers
can be used in parallel to drive low impedances. This aspect makes the pulsers particularly useful for
driving microchannel plate systems. Transformers with output impedances as low as 5 are available.
The standard drivers have a life of >1010 pulses.
The pulsers can feed into a short circuit load without damage. This allows them to be used in sub-
nanosecond pulse chopping systems by feeding through a pockels cell into a shorting stub. Variations
on the standard driver are available.
