John Fluke 3330B Manual page 18

POLARITY
AND MODE CHANGE
TIME:
THE PERIOD OF TIME
BETWEEN
APPLI-
CATION OF AN
EXTERNAL CONTROL
VOLTAGE AND WHEN THE OUTPUT
RELAY CONTACTS REMOVE THE SHORT
ACROSS THE OUTPUT TERMINALS.
(See
Crowbar Time)
(130
ms).
CURRENT/'
1VOLTAGE/+
CLOSED
I
OPEN
CURRENT/'
MODE/POLARITY
CONTROL VOLTAGE
MODE
CHANGE
I
OUTPUT
I
RELAY
h
—
^2
— !—
*1
M
\*
—
I
I
I—
CROWBAR
TIME:
THE PERIOD BETWEEN
APPLICA-
TION OF
AN EXTERNAL CONTROL VOLTAGE AND
WHEN
THE
CROWBAR
RESISTOR
APPEARS
ELECTRIC-
ALLY ACROSS THE OUTPUT TERMINALS
(15 ms).
PULL-IN
TIME
{t2>
= 45 ms TYPICALLY
PULL-IN
TIME
(t3>
"100 ms TYPICALLY
PULL-IN
TIME
(te)
"
80 ms
TYPICALLY
DROP-OUT TIME
(t-,)
= 10 ms TYPICALLY
DROP-OUT TIME
(t4)
"
10
ms TYPICALLY
DROP-OUT
TIME
(15)
*
50 ms
TYPICALLY
W
—
^
CROWBAR
CONTROL
VOLTAGE
CROWBAR
RESISTOR
PULL-IN
TIME
(ti)
= 15
ms
TYPICALLY
DROP-OUT TIME
(12)
=
5
ms
TYPICALLY
CURRENT
LIMIT
AND
VOLTAGE
TRIP
FLAG
TIME:
THE
PERIOD
BETWEEN THE OVER-CURRENT OR
OVER-
VOLTAGE
CONDITION
AND
A
CONTACT CLOSURE
TO LOGIC
COMMON AT THE PROGRAMMING
CON-
NECTOR.
(2
ms).
CLOSED
I
CURRENT
LIMIT/
'
VOLTAGE
TRIP
SIGNAL
I
I
CONTACT
t2k—
CLOSURE
PULL-IN
TIME
(t^)
=
2
ms
TYPICALLY
DROP-OUT TIME
(12)
"
1
ms TYPICALLY
OPERATE FLAG
TIME:
THE PERIOD OF
TIME
BE-
TWEEN
DEPRESSION
OF THE OPERATE
SWITCH
AND
A CONTACT CLOSURE TO
COMMON
AT THE
PRO-
GRAMMING CONNECTOR,
(15 ms).
CLOSED
I
OPERATE
SIGNAL
CONTACT CLOSURE
TO
LOGIC
COMMON
PULL-IN TIME
(ti)
" 15
ms
MAXIMUM
DROP-OUT TIME
(t2)
"
5
ms
TYPICALLY
RESET
TIME:
THE PERIOD OF TIME
THE "OPERATE"
LINE
MUST
BE
HELD AT LOGIC
"0"
IN
ORDER
TO
ELECTRICALLY RESET THE INSTRUMENT.
(10 ms).
(Refer
to
"NOTE"
of paragraph
2-54).
OPERATE
LINE
MINIMUM RESET
TIME
(t^)
- 10
ms
TYPICALLY
Figure
2-7.
TIMING INFORMATION
(Sheet 2 of
3)
2-10
11/72