Tektronix 5441 Instruction Manual page 29

Operating Information-5441lR5441
A thermal cutout in the display module provides thermal This device will automatically re-apply power when the tem-
protection and disconnects the power to the instrument if perature returns to a safe level.
the internal temperature exceeds a safe operating level.
The 5441 is designed to accept up to three Tektronix
Selection
5-series plug-in units. (Only the plug-in units without an N
suffix will provide display readout.) This plug-in feature al-
The plug-in versatility of the 5441 allows a variety of dis-
lows a variety of bandwidth, sensitivity, display mode, etc.,
play modes with many different plug-ins. The following infor-
to meet the measurement requirements. In addition, it al-
mation is provided here to aid in plug-in selection.
lows the oscilloscope system tb be expanded to meet future
measurement r e q u i r e i e n t s . The overall capabilities of the
resultant system are in large part determined by the charac-
teristics of the plug-ins selected.
Installation
To install a plug-in unit into one of the plug-in compart-
ments, align the slots in the top and bottom of the plug-in
with the associated guides in the plug-in compartment. Push
the plug-in unit firmly into the plug-in compartment until it
locks into place. To remove a plug-in, pull the release latch
on the plug-in unit to disengage it and pull the unit out of the
plug-in compartment. Plug-in units can be removed or in-
stalled without turning off the instrument power. It is not
necessary that all of the plug-in compartments be filled to
operate the instrument, the only plug-ins needed are those
required for the measurement to be made.
When the 5441 is adjusted in accordance with the adjust-
ment procedure, the vertical and horizontal gain are stan-
dardized. This allows adjusted plug-in units to be changed
from one plug-in compartment to another without readjust-
ment. However, the basic adjustment of the individual plug-
in units should be checked when they are installed in this
system to verify their measurement accuracy. See the ser-
vice information section of the plug-in unit manual for verifi-
cation procedure.
To produce a single-trace display, install a single-channel
vertical unit (or dual-channel unit set for single-channel oper-
ation) in either of the vertical (left or center) compartments
and a time-base unit in the horizontal (right) compartment.
For dual-trace displays, either install a dual-channel vertical
unit in one of the vertical compartments or install a single-
channel vertical unit in each vertical compartment. A combi-
nation of a single-channel and a dual-channel vertical unit
allows a three-trace display; likewise, a combination of two
dual-channel vertical units allows a four-trace display.
To obtain a vertical sweep with the input signal displayed
horizontally, insert the time-base unit into one of the vertical
compartments and the amplifier unit in the horizontal com-
partment. If a vertical sweep is used, there is no retrace
blanking and the time-base unit triggering must be accom-
plished externally.
For X-Y displays, either a 5A-series amplifier unit or a
56-series time-base unit having an amplifier channel can be
installed in the horizontal compartment to accept the X sig-
nal. The Y signal is connected to a 5A-series amplifier unit
installed in a vertical compartment.
Special purpose plug-in units may have specific restric-
tions regarding the compartments in which they can be in-
stalled. This information will be given in the instruction
manuals for these plug-ins.
REV MAY 1982