HP 437B Service Manual

HP 437B
Table 8-2. Schematic Diagram Notes (2 of 8)
SCHEMATIC DIAGRAM NOTES
Asterisk denotes a factory-selected value. Value shown is typical.
Dagger indicates circuit change. See Section VII.
Tool-aided adjustment. O Manual control.
Encloses front-panel designation.
Encloses rear-panel designation.
Circuit assembly borderline.
Other assembly borderline.
Heavy
line
with
arrows
indicates
path
and
direction
of
main
signal.
Heavy
dashed
line
with
arrows
indicates
path
and
direction
of
main
feedback.
Indicates stripline (i.e., RF transmission line above ground).
Wiper
moves
toward
cw
with
clockwise
rotation
of
control
(as
viewed
from
shaft
or
knob).
Numbered Test Point
measurement aid provided.
Encloses
wire
or
cable
color
code.
Code
used
is
the
same
as
the
resistor
color
code.
First
number
identifies
the
base
color,
second
number
identifies
the
wider
stripe,
and
the
third
number
identifies
the
narrower
stripe,
e.g.,
denotes
white
base,
yellow
wide
stripe,
violet
narrow
stripe.
A direct conducting connection to earth, or a conducting connection to a structure
that has a similar function (e.g., the frame of an air, sea, or land vehicle).
A conducting connection to a chassis or frame.
Common connections. All like-designation points are connected.
Letters = off-page connection, e.g., [AK
Number
=
Service
Sheet
number
for
off-page
connection,
e.g.,
12
Number (only) = on-page connection.
SERVICE 8-7

HP 437B Specifications

General

Brand	HP
Model	437B
Category	Measuring Instruments
Language	English