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both the Type 114 and the oscilloscope (see
external trigger characteristics required).
2. Obtain an externally triggered sweep on the oscillo
scope.
3. Connect a coaxial cable between the TRIGGER OUT
PUT connector of the Type 114 and the vertical input of the
oscilloscope.
4. Turn the Type 114 PERIOD switch to EXTERNAL TRIG
GER.
et the WIDTH switch to 100 µ . Turn the WIDTH
variable control to CAL.
et the oscilloscope VOLT /CM
switch to 1 volt.
et the TIME/CM switch to .1 m EC.
5.
et the Type 114 TRIGGER switch to TRAILING EDGE.
A narrow trigger pulse approximately 3 volts in amplitude
ection 1 for
should be visible approximately 1 cm from the start of the
oscilloscope trace.
6. Turn the WIDTH — VARIABLE control and note that the
displayed trigger pulse can be delayed from 10 µ sec to more
than 100 µ sec from the start of the trace. By using the 5
basic ranges of the WIDTH switch and by turning the as
sociated VARIABLE control, it is possible to delay the trigger
pulse over a range from approximately 150 nanoseconds to
10 milliseconds.
Switching the Power Transformer Primary Con
nections
A switch on the rear of the Type 114 chassis permits
switching the power transformer connections for operation on
either 94.5-137.5 (115 V ac nominal) or 189-275 volts ac (230
V ac nominal). Be sure the correct fuse is installed.
Operating
nstructions — Type 114
2-3
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