Important Note:
Read this page if you read nothing else!
Your adaptor cables may look identical-they are
not! Read the labels on the wires and be sure
that the input and output adaptor cables are con-
nected to the proper socket on the rollalong
switch.
Do not force the switch beyond the mechanical
stop (which is intended to prevent the switch
from making a full revolution).
On models with an adjustable gap, it is possible to
turn the gap adjustment beyond the 180 degree
range marked. If the gap adjust is turned a full
revolution, the channel groups will become out of
sequence.
To re-synchronize the channels,
just
connect up a set of geophones and adjust the gap
until there are no dead geophones when the gap
is set to zero.
On RS-120/48 models, do not altempt to turn the
small gap indicator knob. To position the switch,
turn the large knob. To set the gap, pull up on
the large knob and then turn it unlil the pointer
shows the proper amount of gap.
This switch is manufactured in two versions. In
version 1, the correct switch position is at the
stronger of two stops.
In the other version, the
correct position of the switch is between the
mechanical stops. Feel the clicks and position the
switch between them. Use the noise monitor on
your seismograph
lo
conlirm the proper switch
position.
