Tektronix 5103N

Operating
Instructions—
5103N
Fig.
2-1.
Location
of
the
line-selector
block
on the Power Supply
circuit
board.
primary taps
are set is
marked
on
the
rear panel of
the
instrument. Use
the
following
procedure to obtain correct
instrument operation
from the line voltage
available:
5. Change the nominal line
voltage
information
on the
rear
panel of the instrument.
Use a
non-abrasive
eraser
to
remove
the previous
data, and mark in
new
data with
a
pencil.
6.
Replace the
bottom dust cover and
apply power
to
the instrument.
Damage to the instrument
may result from
incorrect
placement of
the line-selector block.
TABLE
2-2
Regulating
Ranges For Export
Transformer
Line
Selector
Block
Position
Regulatir
1
15-Volts
Nominal
lg
Range
230-Volts
Nominal
L
90 VAC
to 110
VAC
180
VAC to
220
VAC
M
99 VAC
to 121
VAC 198
VAC
to 242
VAC
H
108 VAC
to
132 VAC
216
VAC to
264
VAC
Line Fuse
Data
1
.6 A
slow
-blow
1
A slow-blow
1
. Disconnect the instrument from
the
power
source.
2.
Remove the
bottom dust cover of
the instrument
to
gain
access to the Power
Supply circuit board.
3.
To convert from
115 volts to
230 volts
nominal line
voltage, or
vice versa, remove
the line-selector
block from
the square-pin
connectors (see Fig.
2-1) and
replace
it with
the
other
block. Remove the line
fuse from
the fuse
holder
located
on the rear
panel
of
the display
module and
replace
it with
one having
the correct rating.
The
unused line-
selector
block and line fuse
can be
stored on the Power
Supply circuit board.
Change the
line-cord
power
plug
to
match the
power-source
receptacle or
use an adapter.
NOTE
The
1 15-volt block
is color coded
brown,
and it con-
nects the transformer
primary windings
in parallel.
The
230-volt block is color
coded red,
and it
connects
the primary
windings in series.
4.
To
change regulating ranges,
place
the line-selector
block on the desired
set
of
square
pins. Select
a
range
which
is centered
about the average line
voltage
to which the
instrument
is to be connected (see
T
able 2-2)
.
Operating Temperature
The
5103N
can be operated where the ambient air
temperature
is
between
0°C
and
+50°C.
The instrument can
be stored in ambient temperature between
—
40°C
and
+70°C.
After storage
at a
temperature
beyond the
operating
limits, allow
the
chassis temperature
to
come within the
operating limits before power is
applied.
A thermal cutout in
the display module provides thermal
protection and disconnects
the power
to
the instrument if
the internal temperature exceeds a
safe
operating level. This
device will automatically re-apply
power
when the tempera-
ture
returns
to a
safe level.
PLUG-IN UNITS
General
The 5103N is designed to accept up to three Tektronix
5-series
plug-in units. This plug-in
feature
allows
a
variety
of
display
combinations and also allows selection of band-
width,
sensitivity, display mode, etc., to
meet
the measure-
ment requirements. In addition, it allows
the
oscilloscope
system to be expanded to meet future measurement
requirements.
The overall capabilities of
the
resultant
system are in
large
part determined by the characteristics of
the
plug-ins selected.
2-2