Operating Instructions— Type TU-7
5. Carefully focus and check the display. If the waveshape
does not show good transient response because of over
shoot, rolloff or bumpiness, proceed with the adjustments
described in the oscilloscope instruction manual.
Other Checks
The Type TU-7 can be used as a limited bandpass plug-in
unit. It is useful for inserting calibrated time marks into
the vertical system when adjusting the oscilloscope geometry,
trigger, and time-base circuits for proper operation. For
making a sine-wave bandpass check of an oscilloscope pre
amplifier system, use a 1-series or letter-series plug-in unit
rather than the Type TU-7.
When using the Type TU-7 to couple an input signal to
the oscilloscope vertical amplifier, the deflection factor of
the unit is about 0.5 vo!t/cm with the TEST FUNCTION
switch set to LOW LOAD or HIGH LOAD and the AMPLI
TUDE control turned fully clockwise. LOW LOAD is the
normal position of the TEST FUNCTION switch for dis
playing signals applied through the EXT INPUT connector.
Resistance Measurements
Blank columns are provided in Table 4-1 for recording
resistance readings and the meter used. Resistance measure
ments recorded when the Type TU-7 operates correctly may
be useful if trouble should occur.
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