Ch 3 And Ch 4 Bandwidth Check; Ch 3 And Ch 4 Bandwidth C H E C K - Tektronix 2246 1Y Service Manual

c. Set leveled sine-wave generator output for a
six-division signal amplitude at 50 kHz.
d. CHECK—the displayed signal amplitude is at
least 4.2 divisions as the generator frequency is
increased to 100 MHz.
NOTE
If the displayed signal amplitude drops below
4.2 divisions at any frequency below 100
MHz, readjust Delay-Line HF Compensation
(step 20) with increased front-corner over­
shoot.
e. Repeat the frequency setup and CHECK pro­
cedure for VOLTS/DIV settings of 50 mV and
0.1 V.
f. Move the test signal to the CH 2 input.
g. Set:
Vertical MODE
CH 2 VOLTS/DIV
Adjustment Procedure—2246 1Y and 2246 Mod A Service
h.

24. CH 3 and CH 4 Bandwidth Check

a.
b.
c.
d.
e.
f.
g.
CH 2 (CH 1 off)
h.
10 mV
Repeat the complete bandwidth check pro­
cedure for Channel 2.
Set:
Vertical MODE
CH 3 VOLTS/DIV
Move the leveled sine-wave generator signal to
the CH 3 input.
Set the generator output for a six-division signal
display at 50 kHz.
CHECK—the displayed signal amplitude is at
least 4.2 divisions as the generator frequency is
increased to 100 MHz.
Move the test signal to the CH 4 input.
Set:
Vertical MODE
CH 4 VOLTS/DIV
Repeat the procedure for CH 4.
Disconnect leveled sine-wave generator.
CH 3 (CH 2 off)
0.1 V
CH 4 (CH 3 off)
0.1 V
5-11