Trigger; Trigger; Initial Control Settings; Procedure Steps - Tektronix 2205 Service Manual

Equipment Required (See Table 4-1):
Leveled Sine-Wave Generator (item 2)
50-D Coaxial Cable (Item 6)

INITIAL CONTROL SETTINGS

Vertical
POSITION (both)
MODE
CH 1 VOLTS/DIV
CH 2 VOLTS/DIV
VOLTS/DIV Variable (both)
AC-GND-DC (both)
Horizontal
POSITION (COARSE and FINE)
MAG
SEC/DIV
SEC/DIV Variable

■Trigger-1 -1 ' "'''''''''';'1 "'

SLOPE
LEVEL
- MODE ' '
SOURCE

PROCEDURE STEPS

1. Check Internal Triggering

a. Connect the leveled sine-wave generator out­
put via a 50-n coaxial cable and a 50-n termination
to the CH 1 o r X input connector.
b. Set the generator to produce a 3-division
display at an output frequency of 5 MHz.
c. Set channel 1 VOLTS/DIV switch to 1 V.
d. CHECK—Stable display can be obtained by
adjusting the Trigger LEVEL control for each switch

TRIGGER

Midrange
CH 1, NORM
0.1 V
1 V
CAL detent
DC
Midrange
XI
0.2 ms
CAL detent
Positive <-/-)
Midrange
■ P-P AUTO
VERT MODE
Performance Check Procedure—2205 Service
Dual-Input Coupler (Itehrt T)
5 0 -n Termination (Item 8)
combination given in Table 4-4. Ensure that the
TRIG'D light comes on when triggered.
Table 4 -4
Switch Combinations for Triggering Checks
Trigger MODE
NORM
NORM
P-P AUTO
P-P AUTO
e. Move the test-signal cable from the CH 1 OR
X input connector to the CH 2 OR Y input connector.
Set the Vertical MODE switch to CH 2.
f. Repeat part d.
g. Set:
SEC/DIV
Horizontal MAG
h. Set the generator output to
30-MHz, 1 -division display.
i. Repeat part d.
j . Move the test-signal cable from the CH 2
input connector to the CH 1
Set the Vertical MODE switch to CH 1.
k. Repeat part d.
1 . Disconnect the test equipment from the
instrument.
Trigger SLOPE
Positive - T
Negative " V.
Negative " V.
Positive
0.01 ms
X10
produce a
Y
or
X Input connector.
or
4-8