Panel Feat Ures And Controls; Function Selection Controls; Signal Cond Itioni Ng Contro Ls - HP 5315 A Operating And Service Manual

100 mhz universal counter
Table of Contents

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Model
5315A/B
Operat ion
Table
3
1
Display
Check
-
All
Displays
OVFl
ERROR
-
Hz
S
GATE
dpl
dp2
dp3
7-se8
a
.
1
·
·
.
2
·
.
J
·
4
·
·
5
·
·
6
7
·
a
·
·
9
·
·
BLANK
·
·
·
3-31.
PANEL
FEATURES AND CONTROLS
3-32.
The
followi
ng
paragraphs
describe
t he
features
an
d
co ntrols of
the
functi
on
selection
,
signal
conditioning,
and
di
sp
lay sections of
th
e
f
ro
nt panel.
Front and
rear
pan
el
controls
are
individually
located
and
described
in
Figures 3-8 and
3-
9.
3-33.
FUNCTION SELECTION CONTROLS
3-34.
The
function selection section
of the
front pa nel conta
ins
the POWER
(Stby/
On
),
and
Reset
keys,
Function
keys
group (within
the
boarder
outline)
and
Gate
Time/
Delay control.
3-35.
The
POWER
key
sets
th
e
5315A/
B
eit
her to
ON
or
STBY
(Stand by).
In
t heON
position
(IN)
power
is
supplied
to
entire
instru ment. In the
STBY
position
(OUT)
unregu
lated
dc
is
supplied
only
to
Battery-
Pack
charging circuits
(Optio
n
002).
The
Reset
key
clears
and updates
the display
for
continuous
measurement
modes,
and
resets
the
counter
in
tota lize modes.
3-36.
Each
of
the keys
within the
outlined
fu
nct
ion
group can
select one
of
two functions, as
follows: W
ith
the
Blu
e
colo red shift
key
in t
he
"OUT"
positi
on, the keys
select the function
labeled above
(i.e.,
FREQ A,
T.I.
A-
B,
etc.
).
W
ith
t
he
Sh
ift
key
in
the
"
IN" position, the
keys
select
t
he
function
labeled in
blue
below
(i.e.,
PER
A,
T.I.
AVG
A-
B, etc. ).
3-37.
The
GATE
TIME/
DElA
Y
contro
l
determ ines
the
amount
of
gate
time
per
measureme
nt,
conti
nuo
us
ly
adjustable
over a
range
of
50 ms
to
10
s. The
selected gate
t
ime
may
be di
spl ayed by
pressing
the GATE
TIME function
key, and the Blue shift
key.
In
the
T.I.
DElA
Y
mode
of
operation
t
he
contro
l
determines t
he
amou
nt
of t ime
the
Start
Chan
n
el is
held
off
or
"
dela
yed"
{see
para-
graph
3-19}. The
amount of
"
delay" may
be
displayed
by
pressing the
TI
A-
B, T.I.
DELAY,
and
Blue shift key simultaneously
.
In the
T.I.
A-
B
mode of operation,
the
GATE TIME/DElAY
control
determines
the
sample
rate
.
3-38.
SIGNAL CONDITIONING
CONTROLS
3-39.
A
full
compliment of signal
cond
itioni ng
controls
are
provid ed
for
each channel
(A
and
B)
input
(see
Figure
3-4).
Th
ese
cont
rols
allow
the
selectio
n
of Atte
nuation
(Xl
, X20),
Slope
(positive
or
negative)
and input
coupling
(AC
or
DC).
The
SEP/
COM A
switch
all
ows the
selection
of
separate
Channe
l
A
and
B
input
in
the SEP
position. The
COM A position
disconnects
th
e
Cha
n-
nel B
Input
BNC,
and con nects both Channel
A
and
Cha
nnel
B
in
put
amp
lifiers to
the
Channel
A
in put.
3-5

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