Tektronix 2205 - Corrective Maintenance

Channel 1 Voits/Division (CH 1 VOLTS/DIV)~”This switch is the
scale factor for CH 1.
Channel 2 Volts/Division (CH 2 VOLTS/DiV)--This switch is the
scale factor for CH 2.
Direct Coupling (DC)—All components of the input signal reach
the input channel.
GROUND (/^)—Shows where the zero level will be located when
shifted to AC or DC.
Normal (NORM)—CH 1 and Ch 2 both have the same polarity
when set to NORM. (See OTHERS for polarity.)
POSITION—Moves the trace vertically on the screen.
HORIZONTAL CONTROLS
CAL—Reduces the SEC/DIV by up to 2.5:1.
Ground receptacle—Provides safety earth connection to signal
source.
Magnified times 1 (MAG XI)—Magnifies the SEC/DIV by 1.
Magnified times 10 (MAG XI0)—Magnifies the SEC/DIV by 10.
POSITION—Moves the trace horizontally on the screen.
PROBE ADJUST—Provides a square wave for use as a reference
when adjusting compensation on 10X probes.
Seconds/Division (SEC/DIV)—Lets you select the rate at which
the beam sweeps across the screen.
TRIGGER CONTROLS
Channel 1 (CH 1)—Selects CH 1 signals to trigger the time base.
Channel 2 (CH 2)—Selects CH 2 signals to trigger the time base.
External (EXT)—Selects external signals to trigger the time base.
External 10 (EXT/10)—Selects external signal, divides it by 10,
and connects it to the trigger circuit.
LEVEL—Determines signal level at which the trigger will occur.
C-2
2205 Operator’s