Performance Check Procedure
9.
D e la y T im e P o sitio n R ang e
a.
Set time-mark generator for 0.1 ms.
b.
Set:
c.
CHECK—that the Intensified dot Is positioned at or before the second
time marker.
d.
Turn the |«-
or
DELAY control clockwise until the delay readout stops
Increasing (largest number).
e.
CHECK—that the Intensified dot Is positioned at or after the 99th time
marker (located at a Delay Time of 9.9 m s ).
f.
Disconnect the time mark generator from the 2245A.
10.
X -A x is G ain A c c u ra c y
a.
Set:
X-Y
CH 2 (CH 1 off)
10 mV
DC
GND
Horizontal MODE
VERTICAL MODE
CH 1 and CH 2
VOLTS/DIV
CH 1 Input COUPLING
CH 2 Input COUPLING
b.
Connect calibration generator Std Ampl output to the CH 1 input via a
50
f l
precision BNC coaxial cable.
c.
Set calibration generator for Std Ampl output, 50 mV.
d.
CHECK—X-Axis amplitude is between 4.85 and 5.15 horizontal divi
sions.
e.
Disconnect calibration generator.
7-44
2245A Operators