Tektronix 2205 Service Manual

Adjustment Procedure—2205 Service
and a dual-input coupler to the CH 1 o r X input con
nector and EXT INPUT o r 2 input connectors.
c. Set the generator to produce a 4-division
(80 mV) horizontal display at an output frequency of
5 MHz.
d. CHECK—Stable display can be obtained by
adjusting the Trigger LEVEL control for each switch
combination given in Table 4-4.
e. Set:
CH 1 VOLT/DIV 50 mV
SEC/DIV 0.05 ms
Horizontal MODE MAG
f. Set the leveled sine-wave generator to pro
duce a 50-KHz, 3-division (150 mV) display.
g. Set the generator output to 30 MHz.
h. Repeat part d.
7. Check External Trigger Range
a. Set:
CH 1 VOLTS/DIV
SEC/DIV
Trigger SLOPE
0.5 V
20 ms
Positive (-/"")
h. CHECK—Display is triggered along the entire
negative slope of the waveform as the Trigger
LEVEL control is rotated.
i. CHECK—Display is not triggered at either
extreme of rotation of the Trigger LEVEL control.
j. Disconnect the test equipment from the
instrument.
8. Check Single Sweep Operation
a. Set:
CH 1 VOLTS/DIV
SEC/DIV
Trigger SOURCE
Trigger SLOPE
10 mV
0.5 ms
CH I
Positive (-/"-)
b. Connect 50-mV, standard-amplitude Signal
from the calibration generator via a 50-0 coaxial
cable to the CH 1 o r X input connector.
c. Adjust the Trigger LEVEL control to obtain a
stable display.
d. Set: ■"
Channel 1 AC-GND-DC GND
Trigger MODE SGL SWP
b. Set the leveled sine-wave generator to pro
duce a 50-kHz, 6.4-division display.
c. Position the waveform equally about the center
horizontal graticule line.
e. Press the SGL SWP RESET button. The
TRIG'D/READY LED illuminates and remains on.
f. Set the Channel 1 AC-GND-DC switch to DC.
NOTE
d. Set: 1
Trigger MODE NORM
Trigger SOURCE EXT, EXT
e. CHECK—Display is triggered along the entire
positive slope of the waveform as the Trigger LEVEL
control is rotated.
f. CHECK—Display is not triggered at either
extreme of rotation of the Trigger LEVEL control.
g. Set the Trigger SLOPE switch to negative (~v_).
The INTENSITY control may require adjust
ment to observe the single-sweep trace.
g. CHECK—TRIG'D/READY LED goes out and a
single sweep occurs.
h. Press the SGL SWP RESET button several
times.
i. CHECK—A single-sweep trace occurs, and the
TRIG’D/READY LED illuminates briefly every time the
SGL SWP RESET button is pressed.
j. Disconnect the test equipment from the
instrument.
5-18

Tektronix 2205 Specifications

General

Brand	Tektronix
Model	2205
Category	Test Equipment
Language	English