Mode
l 5315A/B
General
Info
rmation
Table 1-
1.
5315A/B Specifications (
Continued
)
Low
Voltage Indicator: Instr
ument
turns itself off
automatica
ll
y
when
low batlery conditions exists.
Discharge
LED
fl
ash
es
slowly
when
this
happens
.
Discharge
LE
D
is
on
wheneve
r battery is
supp
l
y-
ing
powe
r
to
inst
rument
.
Charge L
ED
indicates state of charge of battery
and
is
on
whe
never battery
is
charged
to
95
%
NOMINAL of capa
ci
ty.
Charge
LE
D flashes
when
90%
NOMINAL of
charge
taken
out
is
replaced.
Charge
LED
is
off
if
charge
is
less
than
90%
NOMINAL capacity.
Line
Failure Protection: Instr
ume
nt automatically
switches to battery
in
case of line failure.
Weight:
Option
002
adds 1
.4
kg
(3
Ibs.
) to weight of
instr
ume
n
t.
53158: Rack and stack metal case;
AC
line
power
onl
y.
Speci
fi
cations same
as
5315A
except as fo
ll
ows:
Rack
Mount:
53
158
is
recommended
for rack
moun
t-
ing
vi
a Rack
Mount
Kit
5061-0072
Oscillator
Output:
10 MHz,
50
mV
pop into
son
load
External
Frequency Standard: 10 MHz, lV rms into
soo
n
Dimensions:
215mmwidex81
mmhighX279mmiong
(
6~
x
31;8
x
107/S
in.)
Weight:
4
kg
(8.8 Ibs.)
GENERAL:
Check:
Counts
internal 10 MHz
reference
frequ
ency
over gate
ti
me
range
NOMINALLY
500
p's
to
20
ms
.
Error Light: LED warning li
ght
activated
if
logic e
rr
or is
f
ound
dur
ing instrument
turn
-
on
self-check.
Display: 8-digit
amber
LED
display, with engineering
units annunciator.
01ierflow: On
ly
frequency and to
ta
lize
me
asurements
wil
l overfl
ow
. In case of overfl
ow,
eight least sign
if
icant
digits wi
ll
be
displayed and
amber
fr
on
t panel
ove
rflow
L
ED
w
ill
be actuated.
All
other
me
asur
ements
which
would theoretica
ll
y cause a display of
more
than 8
digits wi
ll
resu
lt
in
the display of
the
8 most significant
di
gits.
Gate Time:
Cont
inuously variable, NOMINALLY from
50
ms
to 10 s
or
1 period of
the
in
put
, whichever
is
l
onge
r.
Sample Rate:
Up
to 5 readings
per
seond
NOMINAL ex-
c
ept
in
time i
nte
r
va
l m
ode,
where it
is
cont
in
uously
variable
NOMINALLY
from
250
ms to 10 s v
ia
Gate
Time
co
ntro
l.
Operating
Temperature
: 0° to
SOoC
Power Requirements: 100,11
5,2
10,
or
nov
(
+5
%, -10
%)
48-66 H
z;
10
VA
maximum.
Weight: 2.9
kg
(6
Ib
s.
5 oz.)
Dimendnn!;:
238
mm
winE>
x
qg
high x
27n
mm long
(
9~
X
37
/s X
107/8
in.)
DEFINITIONS:
Resolution:
Smallest discernible
change
of
measurement
result
due
to
a m
in
imum chan
ge
in
the
inpu
t.
Accuracy: Deviation from
the
actual v
al
ue
as
fi
xed by
un
iversa
ll
y
accepte
d standards of fr
equenc
y and time.
Least
Signincant Digit
(LSD
) Displayed:
Frequency:
2.S
X
10-7
Gate T
ime
2.5
Ga~e
T
ime
Period:
2.5
x
10-7
Gate
Ti
me
2.5
Gate
Time
x
FREQ
FREQ
<1
0
MHz
F
REQ
;:::
10
MHz
x
PER
PER
>100
ns
X
PER
2
PE
R
!:O
l00
ns
All
above calcul
at
ions should
be
rounded
to nearest
decade
(i.e.,
0.5
Hz will b
eco
me 1 Hz and 0.4 ns will
be
0.
1 05).
Time Inlerval Average:
1 to
25
intervals
..
....
.
..
.
25
to
2500
in
tervals
............
.
2500
to 250,000
.......
..
........
.
250,000 to 25,000,000 intervals .
...
.
..
.
25
,000,000 interv
al
s . .
....
.
...
. .
...
.
..
.
LSD
100 ns
10
ns
1
n,
100 ps
10
ps
Time
Inter
val
Average
is
a statistical process. L
SD
dis-
p
la
yed is ca
lc
ul
ate
d for 1 standard deviati
on
(0 ) con-
fi
dence
leve
l.
Tr
i
gger
Error:
_
_
--c=
c.c
~y<~
(
80~"~V~
I
~2~+~
,~"~c=
c:
Input
sle
w rate
at
trigger point (
rms
l
where
en
is
the
rms
no
ise of t
he
in
put
f
or
a 100 MHz
ban
dw
id
th.
t
Du
e to arith
me
ti
c truncati
on,q
uantization
erro
r
will
be
±1 or ±2
counts
of the
LSD
as
fo
ll
ows:
± 2 counts
01
L
SD
if
± 2 counts
of
L
SD
if
LSD
1 X 1
(}-
7
FR
EQ
<10
MHz
FR
EQ
or
PER
LSD
> lI(Gate T
ime)
FREQ
or
PER
fREQ
F
REQ
;:::10
MHz
± 1 count
of
LSD
for
all
other
cases
.
1-3
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