Optoelectronics M1 Owner's Manual page 9

RECHARGEABLE BATfERY OPERATION
The countercan operateseveralhours from fully
chargedinternalNiCad-balterics
whenthe "PWR " switch is in the "SAIT' or "'ON" position . The batteries are
charged when the unit
is
powered by
the
ACOwgerl
Adapter and the
'1'WR~
switch
is
in the ~AC.(}lC' position .
Full
recharge will occur in 12
to
16 hours. The
battery
packs
willalso charge at a red uced charge rate while the counter
is
being
operated from
the AC-Clwgerl Adapter. If the
optional
N;C>d 30battery packis
installed the rechargetime will be the sameas bceh battery
packs
are
charged
in
parallel The counter may be operatedover prolongedperiods by AC Adapter
opeatice
with
no
hann to
batteries as the charge
eurrmt is regulated.
Thebatteries
sooold be
deepcycled occasionally by allowing them to completely dtscbarge
aed
fully
charge
several
times to maintain maximum
battery
capacity .
CAUTION
Thr NiCad Wttt'rYs should last smml
ytms.
hcrtm:~. it
is
rtamrmendtd thatIIr
CllUnftr
btchtdd insideaf!"
tht
first
you
<1
0J>"l' f i0n
,",'''Y
sisn
<1batmy
- 8"
or
amastm.
Rq>taa
all bat1mts
if
"'Y risibkdamagl:
~_ .
To
insptd
tlr NiUdlnttery
pocks it
is
necessary to ~
the Olbind .
This
is
«rem-
p/md by
rrmaving
ttro
-m""
smws
from """
end
<1
fht OIbinet and
mnoving
lht
top
ctJm'.
riWam not lopinchmryofthtbattny UlirtS. ~cumntscouldflow
dmmging lht bat"",,.
CAUTION
110VAC au £.rtmuJ1 DC Optnltion
A HOVAC. 60Hz TO 9V DC • .lOO-5OOmA. Centn·PosiIire. AC -eh<ugrrIAdaptn ~
specified foruse
and
is supplitd with t~ amnter.
This is
a nominal ~iorI andIht
adapter supp litdwith
IN
cou nterwillmatch
tht
counter's rtquimrrnt tmetly. Whm
using tnemtll power suppliesrmktsure IlVlt the voltiJge under load does not exatd 12
VDe' .
Vv'htn
operating
from
anau tomotrre e1edrial1 system, ~ 1tl'tln5
of
miudng the
vo ltagttotherounttr must beemployttl. Automotive voltages
in
erass
of
13.8VOC are
common and may damagt theNiCad batteries. If therou nttr tmmJes exassm-ly hot to the
touch lhen .... ave
~
from
!he pou'" suppl y imnrdia t<ly.
CALIBRATION
A calibrationadjustmentopening in
the instrumenttop cover is labeled M CAe.
Thisopening permitsaccess
to
the trimmer capacitorwhichprovidesabout a 10
parts
~r
millio n adjustmentrange d the timebase oscilla tor. Usethe slow Gate
Time for maximum resolution
and
reed a stablesignal of known
frequency
adjustin g the trimmer forcorrectfrequencydisplay. Calibrate at 10 MHz or higher.
The
higher the calibration
frequency,
the more accurately the instrumentcan be
calibrated.
If this adjustment
is
ever
unableto bring the oscillatorinto calibration thl3l there is
a secondadjustment inside
refunnj
to as C2. Thea
ad~tmmt
is a coarse adjust
trimmer
and
can be
used
10 bring the fineadjust trimmer(0 ) into range. Remove
the instrument
top
rover
to
access
C2.
AccurM:y.
Frequency mode
=
±
rune Base
Inaccuracy ± 1count
Period mode
=
±
Ti
i me
Base Inaccuracy ±
1
COJnt ±trigger
€'I'1'a" .
Tngger
Erro r: is
< .3' J D
per period
for sine waves of 40dB
signal 10noiseratio
and
amplitude
equal to sensitivity
of
counter. Forany waveshepe,
bigger
error
is
less
than ± .0025 rmcrosecoods divided by the signalslope in volts
per
mcrcseccod
for
signal
to
noiseratio
of
40dB.
FACTORY CAUBRATlONSERVICE
OPTOEU CfRONICS' Sevke Departmentprovidesa calibration service at the
factory .
Counters
may be shipped for this serviceusing the
Factory Service &:
Return Policyexplainedon the last
page
of this manual. The currentcharge is
$40.00 ($35.00 + $5.00 Rct:um Shipping) . Thispriceis subjectto changewithout
notice .
Consult factory
for current pricing at time this serviceis
requested.
OPTOEUCfRONICS will provide a Certifica te of Cali b ration at time of calibration
service , upon request.
15