Tektronix TM 515 User Manual

G EN
ERAL

Each plug-in is
provided access to
a pai r of heat-si
nked,
series-pass
transistors, one
NPN and the
other PNP .
Installation

These
transistors
enable the plug-ins to
operate in
power
ranges
not possible
if the power
were to be dissipated
in
For full
installation instructions
refer to
the procedure

the plug-ins
themselves .
a t the end of
this section
.
Power
Source
OPERATING
INSTRUCTIONS
The
TM 515 is
designed to operate
f rom apower
source
with
its neutral ator
near earth
(ground)
potential with a
separate safety-earth
conductor
. It is not
intended
for
operation from
two phases of
a multi-phase
system
. The
standard
instrument has a
48 Hz to 60
Hz line
frequency
range for
fan operation
. Option 6
extends the upper
limit
of
this range to
400 Hz .
Since
the TM 515
can be stored in
temperatures
Power Usage

between -40°C
and +TS°C, allow
the instrument's
With five
plug-ins installed,
the TM 515
may require up

chassis to
return to within
the operating
limits before
to 240
watts at the upper
limits of
the high line
voltage

aPPIYin9
Power .
ranges
. Actual
power consumption
depends on
the par-
ticular plug-in
configuration
and
operating modes

Plug-in
Modules
selected .
It is not
necesserythat all the
plug-in
compartments be
filled in
order to operate
the Power
Module . The
only
t .oading
Considerations
. The
power capability
of the

modules needed
are those necessary
to accomplish
the
TM
515 can best be
used by
carefully
planningthe plug-in

task
.
configuration,
the external
loads, and the
resulting power
distributions
. Optimum
conditions may
be obtained
by :
1 .
Having equal
loads in all
compartments .
2 . Dissipating
as much
power as
possible in
the
external loads .
3 .
Operating the system
in an ambient
temperature
near 25° C .
HEV B
JAN 1980
Operating
Temperatures
The TM
515 can be operated
in an ambient
air
temperature
of 0°C to 50°C .
Thermal cutout
devices
protect
the system by
disconnecting the
power to
the
TM
515 Power Module
when internal
temperatures
rise
above
a safe
operating level .
These devices
automatically
return power
to the unit
when the internal
temperatures
return to
a safe level .
CA
UTION
section 2-TNt s1s
The TM
515 should be
turned off before
inserting or
removing any plug-ins
as arcing
may occur
and
result
in circuit
damage .
The TM 515 has
no high-power
compartment, so
care
should be
taken in selecting
plug-ins,
since some units

Module Installation
may
not operate at
full capability
in this module .
For
instance, some
TM 500 power supply
type plug-ins
will

1 . Check the
location of the
plastic barriers
on the
not produce
maximum rated
current when
powered from

TM 515
interconnecting
jacktoensurethattheirlocations
this module .
Combinations of
other plug-ins
also may not

match
the slots in the edge
of the plug-in
circuit board
.
operate at
full capability .
An example here
might be
three
units
rated at 75 watts
maximum
power dissipation each
.
All plug-ins
working at their
maximum rating
would

2 . Take
off the PLUG-IN
RETAINER by
unscrewing
probably blow
the line fuse,
if the thermal
cut-out didn't

the three
bolts holding it
in place on the
lower side of the
operate
first .

front
aperture .

Tektronix TM 515 Specifications

General

Brand	Tektronix
Model	TM 515
Category	Power Supply
Language	English