AVTECH  ELECTROSYSTEMS  LTD.
   NANOSECOND  WAVEFORM  ELECTRONICS
   ENGINEERING  -  MANUFACTURING
   P.O.  BOX  265
   BOX  5120  STN.  ‘'F’’
   OGDENSBURG
   OTTAWA,  ONTARIO
   a
   NEW  YORK
   a]  CANADA  K2C  3H4
   13669
   (613)  226.5772
   (315)  472-5270
   TELEX  053.4591
   INSTRUCTIONS
   MODEL  AVB1-S00-ES1  MONOCYCLE  GENERATOR
     __________________________________________________________________

   WARRANTY
   Aavtech
   Electrosvstems
   Ltd.
   warrants
   Products
   of
   its
   manufacture
   to
   be
   free
   from
   defects
   in
   material
   and
   workmanship  under  conditions  of
   normal  use.
   If.  within
   one
   year  after
   delivery  to  the  oriaqinal  owner,  and  after  prepaid
   return  by  the  original  owner,  this  Avtech  product  is  found  to

   be
   defective,  Avtech  shall
   at  its  option
   repair  or  replace
   said  defective  item.
   This
   warranty  does  not  apply
   to  units
   which
   have
   been
   dissembled,
   moadified
   oar
   subiected
   ta
   conditions
   exceedina
   the
   applicable
   specifications
   or
   ratings.
   This
   warranty  is  the
   extent  of  the
   obligation  or
   liability  assumed  bv  Avtech  with  respect  to  this  product  =  an
   d
   no  other  warranty  or  guarantee  is  either  expressed  or  implied.
     __________________________________________________________________

   MONOCYCLE  GENERATOR  TEST  ARRANGEMENT:

   50  db
   attenuator



   Out

   TO






   424
   _—
   B
   Frequency
   Sampling
   volts  TL

      AVB1  A     Control
   Scope

      «’”  Cable


   In




   Output
     Trigger

   Pulse
   PRF:
   <1  MHz
   Generator

   PW:
   0.1  to  1.0  usec


   Amplitude:
   +2  to  +5  volts
     __________________________________________________________________

   Notes:
   1)
   The
   bandwidth  capability  of
   components  and  instruments
   used
   to  display
   the  monacvcle
   generator  output  sianal
   (attenuators.
   cables,
   connectors,
   etc.)  should  exceed
   several  giaahertz.
   2)
   The  use  of  a
   30  db  attenuator  will  insure
   a  peak  input
   signal  to  the  sampling  scope  of  less  than  ane  volt.
   In  general,
   the  pulse
   generator  trigger
   delav  control
   should
   be  set  in
   the  <190  nsec
   range.
   Gther  settings
   should  be  as  shown  in
   the  above  diagram.
   The  monocycle
   generator  output  is  delaved  with  respect  to
   the  trigger
   input  siqnal  by  about  70  nsec  (typically).
   4)
   The
   output
   frequency
   is
   controlled
   primarily  bv  the
   length
   of
   miniature
   50
   ohm
   coaxial
   cable  connected
   between  the
   A  and  B  ports.
   The  frequency  control  cable
   may
   be
   fabricated
   from
   RG
   174
   miniature
   coax  with
   Americon  2001
   -  71898  connectors  (ar
   the  equivalent)  or
   from  85  mil
   semi-rigid  cable  with  Americon
   2001  —  5032
   connectors
   (or
   the
   equivalent).
   The
   output
   signal
   half-period
   (T/2)
   and
   cable
   lenath
   (L)
   are  related
   linearily  (@1.5  nsec  over  foot  of  cable).
   CAUTION:
   The
   center  conductor  on  the  frequency  control  cable  is  at
   a
   DCE
   potential  of  +130V
   and  so  the
   instrument  should  be
   turned  off  when  the  cable  is  to  be  changed.
   The  output  frequency
   is  also  slightly  dependent
   on  the
   setting  of
   the  PW  P
   and  PWN
   oot  controls.
   Clockwise
   rotation  of  the  pot  controls  tends  to  increase  the  width
   of  positive
   and  neaative
   aaing  seaqments
   of  the  output
   sinusoid.
   6)
   The  unit
   was  adjusted  to  provide  500
   MHz  output  at  the
   time  of  shipping  so  little  or  no  adiustment  of  the  above
   controls  should  be  necessarv.
   7)
   The  +15  volt  supply  should  be  disconnected  when  changing
   ar  removing  the  frequency  control  cable.
   @)
   The  monocycle
   aenerator  can  withstand
   an  infinite  VSWR
   on  the  output  port.
   >)
   CAUTION:
   The  unit
   mav  fail  if  the
   trigger  PREF  exceeds
   1.0  MHz.
     __________________________________________________________________

   O4L.23.86
     __________________________________________________________________