Tektronix TM 504 User Manual

Operating Instructions—TM
504
3.
Pull the
PULL
ON
POWER button on the right
side
of the
TM 504.
Some
plug-in
modules have independent
power
switches, usually labeled
OUTPUT,
controlling
ap-
plication of
mainframe
power to
the
module.
Push
this
button
to
activate the
plug-in
module.
Loading Considerations
With four plug-in modules installed, the
TM
504 can
require
up
to
220
W of power from the
line
at
high-line
voltage range
settings. Actual
power consumed, of
course,
depends on
the particular
module combination selected
at
any one time.
This power capability can
best be utilized by carefully
planning
the
functional
combinations
of
plug-ins,
their
external loads,
and
the resulting
power distributions.
Optimum conditions can
be
(1)
equal
loads In all
three
left hand
compartments and
full
load in high
power com-
partments,
(2)
as
much
power as
possible
dissipated in ex-
ternal
loads,
and
(3)
operating In an
ambient
temperature
of
about
+25°C.
The
TM
504
provides each
plug-in
module with
access
to
a
pair
of heat-sinked,
chassis-mounted
transistors,
one NPN
and
one PNP. These
Series-Pass
transistors allow the
plug-in
modules
to operate in power
ranges not possible if
the
power had
to be dissipated within the
modules.

Tektronix TM 504 Specifications

General

Brand	Tektronix
Model	TM 504
Category	Control Unit
Language	English