Avtech AV-1010-C-3MA Instructions Manual page 17

Pin connections
. - Ground
2,3. The
capacitance
across
the pins
controls
the
frequency
range
of the internal
oscillator
4.
This is
connected to
the normally
open terminal
of SW10
- +5.8V in
- Output
1. This
is the leading
output.
The 50
ns pulse
is used
as the SYNC
OUT pulse
in the
DELAY
and DOUBLE
PULSE modes
and as the
trigger
for the PW
module
in the ADVANCE
mode.
7.
INT/EXT.
When this pin
is grounded,
by SW3,
the
clock
module
is triggered
by pin
4 of the
threshold
module.
When this
pin is held
at
+5.8V,
the module
is triggered
by its
internal
oscillator.
8. The
delay timing
resistance
is placed
across
this
pin and
+5.8V by
SW1l and PT3
8,13. The
delay timing
capacitance
is
placed across
these pins by SwWl
9. No connection