Performance Check Procedure
g. CHECK—that the readout is 7.940 ms to 8.060 ms.
h. Press the 1/TIME MEASUREMENTS button to display the |«- 1/SEC -H
cursors.
i. Reposition the reference cursor and the delta cursor to the second and
tenth time markers respectively.
j. CHECK—that the readout is 124 Hz to 126 Hz.
2. K- VOLTS -H Cursor Accuracy
a. Set :
CH 1 VOLTS/DIV 0.1 V
SEC/DIV 0.5 ms
b. Connect calibration generator (PG 506) output to the CH 1 input via a
50 D, precision BNC coaxial cable.
c. Set calibration generator to Std Ampl 0.5 V.
d. Position bottom of the signal to the second horizontal graticule line
from the bottom.
e. Press the CURSOR VOLTS button to display the cursors |<- VOLTS
f. Position the reference cursor to the bottom of the signal and the delta
cursor to the top of the signal (both cursors move with the k- o r DE
LAY control).
g. CHECK—that the readout is between 0.493 V to 0.507 V.
h. Disconnect calibration generator.
2245A Operators
7-47
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