Tektronix 2205 - VoltageWaveform Setup Conditions; Waveforms and DC Voltages; Initial Measurements Setup; Recommended Test Equipment

VOLTAGE/WAVEFORM SETUP CONDITIONS
WAVEFORMS Horizontal
On the left-handed pages preceding the sche
matic diagrams are test waveform illustrations that
— are intended to aid in troubleshooting the instru
ment. To test the instrument for these waveforms,
perform the Initial Measurements Setup procedure
first. Changes to the Initial Measurement Setup are
— noted at the beginning of each set of waveforms.
POSITION
MAG
SEC/DIV
SEC/DIV Variable
Trigger
SLOPE
MODE
SOURCE
Midrange
X I
0.2 ms
CAL detent
Positive (-/“ )
P-P AUTO
VERT MODE
DC VOLTAGES
RECOMMENDED TEST EQUIPMENT
Typical voltage measurements located on the
schematic diagrams were obtained with the instru
ment operating under the conditions specified in the
— Initial Measurements Setup procedure. Control
setting changes required for specific voltages are
indicated on each waveform page. Voltage
_ measurements are referenced to the chassis
ground.
INITIAL MEASUREMENTS SETUP
To test the instrument for waveforms and
voltages, set the initial control settings as follows:
Vertical (Both Channels)
POSITION
MODE
VOLTS/DIV
VOLTS/DIV Variable
AC-GND-DC
Midrange
CH 1, NORM
5 mV
CAL detent
GND
Test equipment in Table 4-1 in the Performance
Check Procedure, Section 4, of this manual meets
the required specifications for testing this
instrument.
POWER SUPPLY ISOLATION PROCEDURE
Each regulated supply has numerous feed points
to external loads through the instrument. Diagram 8,
power distribution, is used in conjunction with the
schematic diagrams to determine the service
jumper or component that may be lifted to isolate
loads from the power supply.
If a supply comes up after lifting one of the
isolating jumpers, it is very probable that short exists
in the circuitry on that supply line. By lifting jumpers
or other components in the supply line farther down
the line, the circuit in which a short exists may be
located.
Always set the POWER switch to OFF before
soldering or unsoldering service jumpers or other
components and before attempting to measure
component resistance values.