sEcTtoN r
TECHNICAT SUfiTiAARY
l.t INIRODUCIION (Figurcr l-2 io l-51
The Fairchild Types 765, 766, and 767 Family of
Oscilloscopes are available in three basic form factors:
bench, rack, and portable models. The Portable
Models are identified by the TyP€ 765 numerical
Series; the Bench Models by the Type 766 numerical
Series, and the Rack-mounted Models by the Type 767
numerical Series.
In addition, there are alphabetical suffixes appended
to the numerical series to identify special electronic
circuits. The suffix H denotes the high-voltage oscillo-
scope with an accelerating potential of l3 Kv. The low
voltage option is 5 Kv and these series oscilloscopes are
identified by the absence of the H alphabetical suffix.
The suffix H/F denotes the high-voltage high-fre-
quency model. These models are provided with the
Type 7062 CRT Termination Network to enable them
to accommodate the Type 79-024 DC to 100 Mc
Plug.in Amplifier. The suffix M denotes the militarized
model. Further details Ior all of the models are listed
in the Specifications.
Since the electrical circuits are identical in all
models except for minor difierences, discussion will be
confined to the Type 766H Series Oscilloscope. All ref-
erences to the Type 766H Series will be equally appli-
cable to the other models unless otherwise indicated.
To simplify discussion, the Type 766H Series Oscil-
loscope may be categorized into three basic Series:
(l) Low-voltage, (2) High-voltage, and (3) High
Frequency.
l. The following models comprise the low-voltage
Series:
Type 765, 765M, 766, 766M,767, and 767M
2. The following models comprise the high-voltage
Series:
Type 765H, 765MH,
767MH
3. The following models
quency Series:'
766H, 766MH, 767H,
comprise the high-fre-
Type 765H/F, 765MH/F, 766rI/F, 766MH/F,
767H/F, A 767MIJ/F
rNore.' These oscilloscopes are electrically identical
to the high.voltage series except for the addition of the
high-frequency CRT Termination Network.
Separate manuals are provided for each of the plug-
in units. If desired, these manuals may be inserted into
the same binder supplied with your Indicator unit,
I.2. FEATURES
The Fairchild Type 766H Family of Oscilloscopes
consists of an Indicator Unit and any two of a number
of available plug-in modttles. The Indicator Unit con-
tains the power supplies, a cathode-ray tube with asso
ciated circuitry, and an internal amplitude calibrator.
The plug-in modules take the place of the vertical
and horizontal deflection systems of a conventional
oscilloscope, and their outputs are connected directly
to the deflection plates of the cathode-ray tube.
All plug-ins in the Type 74-00 and 76-00 Series may
be used universally in the oscilloecope. The plug-in
rnodules may be selected to give a degree and type of
performance demanded of them by the particular ap-
plication for which they are to be used.
. l3 Kv accelerating potential (low-voltage option:
5 Kv)
o Quatity display area of 6 cm by l0 cm
o Three basic Main Frames available; Portable
(Type 765), Bench (Type 766) and Rack-
mounted (Type 767)
o Silicon solid state circuitry
o Dual Plug-in capability (DC to 100 Mc) with all
High Frequency or H/F Models
o Z-axis input provided on all bench and rack-
mounted models
o Illuminated internal graticule optionally avail-
able
o Silicon transistors and fully regulated electronic
power supplies, assure maximum drift stability
and long-term reliability
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