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GETTING
STARTED
Figure 2-7. Rear Panel Connectors,
Fuse and Fan
The following
connectors
are indicated
in Figure 2-7
@
ANALOG
OUTPUT-The
ANALOG
OUTPUT jacks,
which include the X, Y, and Z outputs, are used with the
XY mode to plot data with external devices such as plot-
ters, CRTs, or oscilloscopes.
The X output provides time
or interval information,
while the Y output provides signal
amplitude
information.
The Z output
provides a blank-
ing signal, trigger pulse, or pen lift signal, depending
on
the type of graphing device. The ANALOG
OUTPUT jacks
are standard BNC connectors.
0
-
47
CLK
CLK IN and OUT can be used are to connect
two or more Model 194s together for synchronous
opera-
tion. CLK IN can also be used to operate the instrument
from an external time base. Standard BNC connectors are
used.
0
48
IEEE-488
Connector--This
connector is used to con-
nect the Model 194 to the IEEE-488 bus. IEEE-488 function
codes are marked above the connector.
@
AC Receptacle-Power
is applied through the sup-
plied 3-wire power cord to the AC receptacle. The operating
voltage is marked on a label adjacent to the rear panel.
If necessary, the operating
voltage can be changed,
as
described in Section 7.
0 50
Lme
Fuse-The
line fuse protects the power line in-
put of the instrument
from overloads. If the instrument
repeatedly
blows fuses, the problem
must be rectified
before continuing
operation.
Section 7 contains
fuse
replacement
and troubleshooting
procedures.
0
-
5'
Fan
The fan provides a continuous
flow of cooling
air over the various components
within
the instrument.
To ensure proper cooling, the air flow path must be kept
free of obstructions,
including
the exhaust vents on the
opposite side of the rear panel. Also, the fan filter must
be kept clean.
2.4 POWER
UP PROCEDURE
Use the following
procedure to connect the Model 194 to
the power sowce and turn the instrument
on.
2.4.1 Power
Line Connections
Connect the instrument
to line power as follows:
1. Connect the female end of the supplied line cord to the
AC receptacle on the rear panel of the instrument.
Con-
nect the other end of the line cord to a grounded
AC
outlet.
2-12
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