INSTRUCTION
MANUAL
MODEL
DLP
400-5-750A
9
constant
resistance
characteristic
should be
used
as
a
load
when simulating
short
circuit
protection
and
recovery
of
most
solid
state
power
supplies
unless
otherwise
specified
by
the
manufacturer.
3.3
EXTERNAL
MODULATION
In
the
external
modulation mode,
the
Dynaload
acts
as
a
constant
current
load
with
the
constant
current proportional
to
the
external
voltage
applied
to
TB1-1
and
TB1-2.
(TB1-2
is the
return
of the
external
modulating
voltage
and
is
internally
connected
to
the
negative
lead
of
the Dynaload)
.
The
Dynaload
will
program
from
0-5A
as the
external
modulation
voltage
is
programmed
from
0-6V
if
the
DC
load
adjustments
are
set
in
the
maximum
clockwise
position.
The
programming
sensitivity
may
be
reduced
proportionately
by
the
front panel
DC
load adjust
controls.
Turning
the
load
adjust
counterclockwise
reduces
the programming
sensitivity.
The input impedance
of
the
external
modulation
terminals
is
approximately
10K
ohms.
The
transient response of
the
Dynaload
is determined by
the
feedback
loop characteristics
of
the
constant
current
regulator
to
achieve
precision programming.
A
typical
transient
response
time
is
50 microseconds
for
any
change
in
load.
[ELP400-5-75QA]
