Garmin SL40 - Appendix B - Periodic Maintenance; Equipment Calibration; Reference Oscillator; Cleaning the Front Panel

Periodic Maintenance
AppExDIX
B
-
PEToDIC
MITxTENANCE
EeurpruENT
CaLrsRATroN
The SL40 design requires very few
adjustments
or calibration to be made. In
fact, there are no
internal
manual adj ustments.
Re
pnne
NCE
OScILLAToR
The
reference
oscillator
frequency
should
be
checked
approximately
every 3 to 5
years
to
ensure the
units transmit frequency
is
within allowable tolerance.
The oscillator fiequency
can be
checkcd
by connccting the transmitter
output
througlr
an
appropriate load
to
a calibrated fiequency
counter.
The
transmit frequency
should be within
l5ppnr of the
sclected channel
tiequency.
Contact
the
Garnrin AT, Inc. f-actory for
instructions
on
adjusting the fiequency
if
required.
CLEnNING
THE
F norur PINBI-
The fiont
bezel,
keypad,
and display
can
be
clcaned with a
soft cotton cloth
dampcrrecl
with
clean
water.
DO NOT use
any
chcrnical
clcaning
agents.
Care
should be taken to
avoid
scratching the surface
of
the
display.
SL40
I
nstal lat ion Manual
23