Avtech AV-1011-C-OP1 Instructions Manual page 14

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D) REAR PANEL CONTROLS
AC POWER INPUT. A three-pronged recessed male
connector is provided on the back panel for AC power
connection to the instrument. Also contained in this
assembly is a 1.0A slow blow fuse and a removable card
that can be removed and repositioned to switch
between 120V AC in and 240V AC in.
2.0A SB. This fuse protects the output stage if the
output duty cycle rating is exceeded.
AMP. To voltage control the output amplitude, set
the switch in the EXT position and apply 0 to +10
Volts to the "A" BNC connector (R,, 2 10K).
PW. The pulse generator may be triggered externally
in a PW,, = PW, mode by setting this switch in the EXT
position and the front panel INT/EXT/MAN switch in the
EXT position and applying a TTL level pulse of the
desired pulse width to the A BNC connector.
HV_ SWITCH. This switch must be in the "ON" position
to obtain an output pulse. Note when the unit is
operating at a low duty cycle and an attempt is made
to reduce the output amplitude, the amplitude will
decay slowly with a time constant of several tens of
seconds. If a rapid decay is required, briefly switch
the rear panel HV switch to the "OFF" position (and
then back to the "ON" position). Also note that if
the output pulse vanishes due to a changing of the
position of the polarity (see paragraph 12, Front
Panel Controls), the pulse recovery time may be
reduced significantly by briefly setting the HV switch
in the "OFF" position (and then returning it to the
"ON" position).
LOCAL-REMOTE SWITCH. This two-position switch must be
in the LOCAL position to operate the instrument from
the front panel controls. To control the instrument
using your personal computer, the switch must be in
the REMOTE position.
OP1 CONNECTOR. GPIB cable (supplied) connects between
this connector and your personal computer.