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OPTRATIilG
II{STRUCTIOl\lS
2.I
CONTROIS AND
TERMINATS
CONNECTORS
AII
cable recepta(Ies on the irrstruDtent are
BNC
tvp. UC-625A/ti.
Connector UG-86.'U should
llc
itsed
\!
ith
these recelltacles.
TIME NTEITVAL
The
designations alxi functions of th.,
\'arjous
cr)Itrols
and
telminlrls
that conipr.ise
the
tinte
inter-\'ai
srction
oI the
instrument are listed
bek)w.
TRIGGER INPUT
S'TAR'r
-'Ihis
connector
is the
iDput
terDriniii
ror
the
staft cl]a lel
dur.irE
TIME I}i
IERVAL
rr(,asurcrncnt.
The'IRIGGER SLOPE s,vitch
and
TRIGGER
LUVEL
VOLTS
control
above
tho connector
are par't
oI
re
S'IART input
c
ircuit
STOP
-
This connector is the input terrnirlal for
the
stop
channel
during
IIME
INTERVAL measuremcnt.
The TRIGGER SLOPE
switch
and
TRIGGER
LEVEL
VOLTS
control
above
thc connector are part ol
the
STOP
input
circuit.
COMM.
-SEP.
-
The START
and
STOP
comectors
ale
connected
together
when
this
toggl.c
slvitch
is
in the
COM. (common)
position.
Under
this conditron
both
the
starl
and
stop
trlgger
\.oltage nlay be applied to
the instrunrent through either the START or
STOp
connectors. In
the
SEP,
(separ'ilte) slvitch position
there
is
no
connection
between
the
STAitT
and
STOp
connectors and
the
start
and
stop
trigger
voltages
must be applied
to
their
rqspectj\.e connectors.
TI]IGGER
SLOPE
In the
posltive position
of the
switches, the r.isirB
por.-
tion of the wave conlrols the trntc
intel\lll. I
th(
negative
position the
faliing porlion of the
waye con-
trols
Ule
time
interval.
The
Left hand
switch is
for
the
start
channel. The
right
hand
switch is for the
stop
channeL
TRIGGER
LEVEL
VOLTS
Tlrese
controls establish
the
triggering level
oI
the
staft
and
stop channels.
T
II\IE:
UNIT
']-irc
TIME UNI'I slvitch selccts the
Lurts
oi
tinlc
i
).
the
tilne
lncasur.enlcnts
sho\yn on
the
ltfl
side
of
lll(.
FLNCl.f ION
SELEC'|OR
s,ritch
(1C
PEI
OD
AVEitA.GE
to
MANUAL
GAf
E).
Indications
ilre
in
scconds
or
nrillise('onds
i!
ith
d.cilrltl
point ill.iic.rte(1.
Tlr{t dF,sig-
I)aliolis bcklN the
S.\'it|ll afe lhe countr\l ireqllcn(res.
in
kilmvcles, ol)taintl)lc
ft-om
the
stairl,.lar.d
tinte
l)asc.
i-he
sn
itch posilioll designated EXl
.
js
for:
.ir1
ex-
ternally
counted
freqilency.
Ir
this l)osition thc
EXT.
colmector rs sul)stituted
rn
pLace
ol thc
intetriri
stll.lld-
ard tinle base.
No
tintL. unrt
is
specified
when the
EXT.
position
is
used
ix)d
nc_r
decintal point apl)ears.
FUNCTION SELECTOR
'fhis
S{,itch sets
Lrp
the'
\.arious
citcuits
to
per,lol'l1l
the
functions
Shown
bl
the switch
positlon designa-
tions.
fhe designations
on
the
left side
of
re
FUIiC-
TION SELECTOR
switch
per.tain
to tiDre
ll.reasure-
rDents rr'hile
those
on
the
right side
ar.e
for
Irequellcv
mc;rsuren)ents. The
switch position designations
and
their
functions
arc
as
follorvs:
10 PERIOD
AVEnAGE
-
Measures
the
incorning wa\
e-
fornr
for
a
period
o,
tetl cycles ard displays thJ
perioct
oI one
cycle.
The
uflits of
D-teasuremcnt
oI
time are
depenCent
or)
the
setting oI the TIN{E UNIT swiich.
PEITIOD
-
Measur.es
the inconring rvavelornt
lor
a
period of
one
cycle
and
displays
this period.
The
units of measurentent of time
ar.e
dependelt on the
setting oI the
TIME UNIT switch.
TIME INIERVAL
-
Measures
and
displays the
timc
interval
between
the
start
and
stop
trigger
l,oltages.
Thc
inlts
of measutement
o{
the
tilne interval,
irre
dependent on
the
setting oI the TIME U\-IT switch.
MANUAL GATE
-
This Iunction
is
used
Ior tong-teln.l
counting
where the gate
is
coDtrolled by
means
oI the
MANUAL GATE
su'itcli.
In
this position the
instr.ument
mav be uscd as an
clectronic stop
lvatch.
FREQUENCY
-
Counts
and
disptays
frequencl.oi in-
coming wavelornts.
CoLrnting
tinte
depends on the
setting of the FREQUENCY UNIT switch.
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