Performance Check Procedure
2 0 .
Channel Isolation
a.
Set:
CH 1 and CH 2 VERTICAL MODE
CH 2 INVERT
CH 1, CH 2, CH 3, and CH 4
VOLTS/DIV
TRIGGER SOURCE
On (ADD off)
Off
0.1 V
CH 1
b.
Connect the leveled sine-wave generator (SG 503) output to the CH 1
Input via a 50
Cl
precision BNC coaxial cable and a 50 f l BNC termina
tion.
c.
Set the leveled sine-wave generator (SG 503) output for a five-division
signal display amplitude at 100 MHz.
d.
Set CH 2, CH 3, and CH 4 VERTICAL MODE On (CH 1 off).
e.
CHECK—display amplitude is 0.1 division or less, excluding trace
width, on the CH 2, CH 3, and CH 4 traces.
f.
Move sine-wave generator signal to the CH 2 Input.
g.
Set:
CH 1, CH 3, and
CH 4 VERTICAL MODE
On (CH 2 off)
TRIGGER SOURCE
CH 2
h.
CHECK—display amplitude is 0.1 division or less, excluding trace
width, on the CH 1, CH 3, and CH 4 traces.
I.
Move sine-wave generator signal to the CH 3 Input.
j.
Set:
CH 1, CH 2, and CH 4
VERTICAL MODE
On (CH 3 off)
TRIGGER SOURCE
CH 3
k.
CHECK—display amplitude is 0.1 division or less, excluding trace
width, on the CH 1, CH 2, and CH 4 traces.
7-24
2245A Operators
