Trigger; Switch Combinations For A Triggering Checks - Tektronix 2215A Instruction Manual

Equipment Required (see Table 4-1):
Leveled Sine-Wave Generator (Item 2)
50-fi BNC Cable (Item 4)
INITIAL CONTROL SETTINGS
Vertical
POSITION (both)
VERTICAL MODE
BW LIMIT
CH 1 VOLTS/DIV
CH 2 VOLTS/DIV
VOLTS/DIV Variable
(both)
INVERT
Input Coupling (both)
srizontal
POSITION
HORIZONTAL MODE
A and B SEC/DIV
SEC/DIV Variable
X I0 Magnifier
B DELAY TIME POSITION

TRIGGER

SLOPE
LEVEL
TRIGGER
VAR HOLDOFF
Mode
SLOPE
LEVEL
A&B INT
A SOURCE
A EXT COUPLING
PROCEDURE STEPS
1. Check Internal Triggering
a. Connect the leveled sine-wave generator output via a
50-fi cable and a 50-fi termination to the CH 1 OR X input
connector.
TRIGGER
Midrange
CH 1
Off (button out)
5 mV
50 mV
CAL detent
Off (button out)
DC
Midrange
A
ns
0.2
CAL detent
Off (knob in)
Fully counterclockwise
OUT
Midrange
NORM
P-P AUTO
OUT
Midrange
CH 1
INT
DC
Performance Check Procedure— 2215A Service
50-fi BNC Termination (Item 5)
b. Set the generator to produce a 5-MHz, 3-division
display.
c. Set the CH 1 VOLTS/DIV switch to 50 mV.
d. CHECK— Stable display can be obtained by adjusting
the A TRIGGER LEVEL control for each switch combination
given in Table 4-6.
Table 4-6

Switch Combinations for A Triggering Checks

A TRIGGER Mode
NORM
NORM
P-P AUTO
P-P AUTO
e. Set the HORIZONTAL MODE switch to B.
f. CHECK— Stable display can be obtained by adjusting
the B TRIGGER LEVEL control in a position other than the
B RUNS AFTER DLY position for both the OUT and IN
positions of the B TRIGGER SLOPE switch.
g. Set:
VERTICAL MODE
HORIZONTAL MODE
A&B INT
h. Move the cable from the CH 1 OR X input connector to
the CH 2 OR Y input connector.
A TRIGGER SLOPE
OUT
IN
IN
OUT
CH 2
A
CH 2
4-11