Agilent Technologies 4284A Service Manual page 93

DANGEROUS VOLTAGE, EXCEEDS 1000 VOLTS
0
Knob control
Screwdriver adjustment
Circuit assembly boarderline
Asterisk denotes a f a c t o r y selected value. Va l u e shown i s typical, p a r t
may be omitted.
Bead inductance.
0
Circuit board pattern inductance
Heavy line indicates main signal path.
Heavy dashed line indicates main feedback path.
Wiper moves towards CW w i t h clockwise r o t a t i o n o f control (as viewed
from shaft or knob).
Numbered test point. Measurement aid provided.
Denotes wire color code. C o d e used is the same as t h e resistor color code
- ( 9 4 7 ) -
(e.g., 9.4.7 denotes white/yellow/violet).
Encloses front panel
designations.
Shielded area
J_ I n d i c a t e s direct conducting connection t o earth.
Indicates conducting connection t o chassis or frame.
Indicates circuit common connection.
Figure 4-2. Schematic Diagram Symbols
4-6