John Fluke 3330B Manual page 19

Programmable constant voltage/constant current calibrator
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3330B
OPERATE
TIME:
THE
PERIOD
BETWEEN
APPLICATION
OF
AN EXTERNAL CONTROL VOLTAGE
AND WHEN
THE
PROGRAMMED
OUTPUT
IS
WITHIN
SPECIFICA-
TIONS,
(1
Sec
to 3.5
sec.
depending on
Range).
^
i
1*
-if-
-if*
1
*
4
^
'
'
1
I
CONTROL
VOLTAGE
"
10V
RANGE
-100V
RANGE
1000V
RANGE
INSTR.
IN
OPERATE
10V
RANGE,
10V
OUT
{t-\)
=
1
sec.
TYPICALLY
100V
RANGE,
lOOV
OUT
(t2)
=
3
sec.
TYPICALLY
1000V
RANGE,
1000V
OUT
<13)
- 3.5
sec.
TYPICALLY
ALL
RANGES,
OUTPUT
DE-ENERGIZED
{t4)
=
10
ms.
CURRENT
LiMIT/VOLTAGE
TRIP
LEVEL
TIME:
THE
PERIOD
BETWEEN
APPLICATION
OF AN
EXTERNAL
CONTROL VOLTAGE AND WHEN THAT
PARTICULAR
LEVEL
IS
ADDED
ELECTRICALLY TO THE
CIRCUIT.
{2
ms).
1
ri
*—
»-j
t2
'<
CONTROL
VOLTAGE
LEVEL
RESPONSE
PULL-IN
TIME
(ti)
= 2
ms
TYPICALLY
DROP-OUT
TIME
(t2>
=
1
ms
TYPICALLY
VOLTAGE
TRIP
RANGE
TIME:
THE PERIOD BETWEEN
APPLICATION OF
AN EXTERNAL CONTROL VOLTAGE
AND WHEN
THE PARTICULAR
VOLTAGE
TRIP
RANGE
IS
ADDED
ELECTRICALLY TO THE
CIRCUIT.
(2
ms).
CONTROL
\
ir\
1
T
A
c
j
tl
Si
It
i
L_
VUL
1
Aufc
TRIP
RANGE
RESPONSE
PULL-IN
TIME
(ti)
-2
ms
TYPICALLY
DROP-OUT
TIME
(13)
=
1
ms
TYPICALLY
Figure
2-7.
TIMING
INFORMATION
(Sheet 3 of
3)
vernier voltage
or current
limit
value that
can be
pro-
grammed
is
10%
of
the selected range using a
"0001"
code.
Maximum
vernier
limit
value
is
110%
of
the
se-
lected
range using
a
"1011"
code.
2-47.
Voltage Trip
Range
2-48.
Programming
of
the
Voltage
Trip
Range
may
be
accomplished
by
applying Logic
"1"
to the
proper
pro-
gramming
terminals.
The
Voltage Trip
is
normally
in
the
lOV
range
with
program
lines at
Logic "0".
Whenever
the
Voltage Trip Feature
is
triggered,
the
instrument
is
auto-
matically
tripped to the
STDBY/RESET
mode.
Logic
"0" must
then be
applied
to
terminal 33,
followed
by
Logic
"1"
to return the
instrument
to
OPERATE.
Refer
to
paragraph 2-54
for resetting information.
11/72
2-49.
Flag Indicator
Outputs
2-50.
Isolated
flag
indicator
outputs
are available
at
the
Remote
connector
to
provide
an
indication
of
the Operate/
Voltage
Trip,
or
Current Limit
modes
of
operation.
Ter-
minal
50
is
the
Voltage Trip
Flag,
terminal
49
is
the
Current Limit
Flag,
and
terminal
37
is
the
Operate
Flag,
if a polarity
or
mode
change
is
programmed,
a
standby
state will
be
indicated
for.
approximately
100
milliseconds.
Each
flag
is
a
contact closure to terminal 36,
Program
Common.
2-51.
Timing
Information
2-52.
Figure
2-7
contains timing
definitions
and
wave-
forms which win be of
assistance in
programming
the
Model
2-11

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