INSTRUCTION
MANUAL
-
MODEL
DLP
400-5-7
50A
—
16
4.6
CURRENT
CALIBRATE
A.
Set
the
mode
selector
switch
to
the
0-1A
constant
current
position.
B.
Using
a
100V
source,
turn
the
DC
load
potentiometer
in
the
maximum clockwise position
and
adjust
R56
to
obtain
between
1 and
1.2A.
C.
Set the mode
selector
switch
to
the
0-5A
constant
current
position.
D.
Using
a
100V
source,
turn
the
DC
load
potentiometer
in
the
maximum
clockwise position,
and
adjust
R19
to
obtain
between
5
and
5.2A.
E.
Make
sure
that
the
current
limit
setting
is
not
interacting
in
any
way.
4.7
EXTERNAL
MODULATION
A.
With
5VDC
applied,
apply
a
6.00
Volt
signal
to
TB1-1
and
TB1-2
as
described
in
Section
3.3.
B.
Adjust
R81
to
achieve a
load
current
between
14.85
and
15.15
amps.
4.8
OVERPOWER
PROTECTION
A.
Apply
a
400V
source
to
the Dynaload,
and
increase
the
load
current
either
to
its maximum
counter
clockwise
position or
2A,
whichever
occurs
first.
B.
Adjust
R7
,
the
bendback resistor,
to
limit
the
current
at
400V
to
between
1.9
and
2.2A.
ILLP400-5-75QA]
