Schematic Notes - HP 182C Operating And Service Manual

Service
Table
8-1.
Schematic Notes
Model 182C
<0*
p/0
cw
NC
V
Refer
to
MIL*STO-1&-1A
for schematic
symbols not
listed in this table.
Etched
circuit
board
Front'panei marking
Reer-panel
marking
Front'panel control
Screwdriver adjustment
Part of
Clockwise
end
of vark
able resistor
No
connection
Waveform
test
point
(with
number)
Common
electrical
point
(whh
letter)
not necessarily
ground
Single>pin
connector
on board
Pin of a plug-in
board
(with
letter
or
number)
Coaxial cable
connected
to
snapKin
jack
Coaxial
cable
connected
directly to
board
Wire connected
to
pressure>fit
socket
on board
Main
signal
path
0
0
I
-«v''
(925)
Field-effect transistor
(P*type base)
Field-effect transistor
(N-type
base)
Breakdown
diode
(voltage regulator)
Tunnel diode
=
Step-recovery diode
Circuits or
components drawn
with dashed
lines
(phantom)
show
function only
and
are
rx>t
intended
to be complete.
The
circuit
or
component
is
shown
in detail
on
another schematic.
Wire colors are given
by
numbers
in
parentheses
using
the
resistor
color
code
[
(925)
is
wht-red-grn
|.
0-
Black
5 -Green
1 •
Brown
6
•
Blue
2
Red
7 Violet
3
-
Orange
8
•
Gray
4 -Yellow 9 -White
Switch wafers
are identified
as follows:
IP
IR
3F 5R
IF.
IR
2F
ZR
=
Optimum
value selected
at factory, typical
value
shown;
part
may
have been
omitted.
Primary feedback path
Secondary feedback path
Unless otherwise
indicated:
resistance in
ohms
capacitance
in
picofarads
inductance
in
microhenries