Performance Check Procedure
c. Connect calibration generator (PG 506) fast rise, rising-edge signal to
the CH 1 and CH 2 inputs via a 50 O precision BNC coaxial cable, a
50 f l BNC termination, and a BNC dual-input coupler.
d. Connect calibration generator trig out signal to the CH 3 input via a
50 f l BNC coaxial cable and a 50 Cl BNC termination.
e. Set the calibration generator to Fast Rise and adjust Pulse Amplitude
for five divisions of signal amplitude at 1 MHz.
f. Position the rising edges of the superimposed waveforms horizontally to
the center vertical graticule line.
NOTE
It may be necessary to readjust the trigger level to display the
rising-edge signal In the Delay Match steps. This can be done by
pressing the upper Trigger MODE button to cause the trigger
level to be automatically readjusted.
g. Set XI0 MAG On (for 2 ns/div sweep speed).
h. CHECK—that the leading edges of the two waveforms have less than
0.1 horizontal division separation at the center graticule line excluding
trace width.
14. CH 1 to CH 4 Signal Delay Match
a. Set VERTICAL MODE to CH 1 and CH 4 (CH 2 off).
b. Move the CH 2 signal to the CH 4 Input connector.
c. Superimpose the CH 4 waveform on the CH 1 waveform.
d. CHECK—that the leading edges of the two waveforms have less than
0.1 horizontal division separation at the center graticule line excluding
trace width.
15. CH 3 to CH 4 Signal Delay Match
a. Set:
VERTICAL MODE CH 3 and CH 4 (CH 1 off)
TRIGGER SOURCE CH 2
b. Move the CH 3 signal to the CH 2 input and the CH 1 trigger signal to
the CH 3 input.
7-20
2245A Operators
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