Tektronix 5441 Instruction Manual page 84

Adjustment Procedure-5441lR5441
Input coupling Dc
Mode CH 1
Trigger CH 1
CH 1 VoltsIDiv 1
Time-Base Unit
Main Triggering
+
Slope
Auto Trig
Trig Source Left
Position As desired
Mag X 1
Main SecIDiv 1 ms
Display Mode Main Swp
f. Disconnect the bnc cable from the vertical amplifier
input connector.
3. Adjust 10 ns Timing
NOTE
A 5842
time-base or a time-base having a lOns
sweep must be used.
a. Connect the time-mark generator signal to the input
of the 5A48.
1. Adjust Horizontal Centering
b. Set the time-mark generator for 10 ns markers. Set
a. Pull the POWER switch to turn on the oscilloscope
the deflection factor of the vertical amplifier so the markers
and check for a vertical trace over the entire graticule area.
are at least five divisions in amplitude.
b. Short together pins 7A and 7 8 on the 5A48 vertical c. Set the time-base unit for a sweep rate of 10 nsldiv.
amplifier with an appropriate shorting bar.
Adjust the time-base triggering control for a stable display.
c. CHECK-That the displayed trace is within 0.5 div of d. CHECK-For one 10 ns marker per division over the
the center vertical graticule line.
center eight graticule divisions of the display (position as
necessary).
d. ADJUST-Horizontal Centering R222 to position the
trace to the center vertical graticule line. See Fig. 4-6 for the e. ADJUST-C210 for one 10 ns marker per division
adjustment location.
over the center eight major graticule divisions of the display.
Sweep accuracy is ?5% over the entire sweep, excluding
the first 30 ns and the last 10 div of the magnified sweep.
2. Adjust Horizontal Gain
See Fig. 4-6 for the adjustment location.
a. connect a 1 kHz square-wave signal from the calibra-
tion generator to the 5A48 input, using a 42-inch bnc cable.
4.
Adjust ns Timing
a. Press the POWER switch to turn off the oscilloscope
b. Set the vertical amplifier and generator controls to ob- and install an appropriate time-base unit in the horizontal
tain a five volt reference signal. Center the display between compartment. Pull the POWER switch on.
the third and eighth vertical graticule lines.
b. Set the time-mark generator for 5 ns markers. Set the
c. CHECK-The crt display for a horizontal deflection of deflection factor of the vertical amplifier so the markers are
5 div, +0.15 div. at least five divisions in amplitude.
d. ADJUST-Horizontal Gain R212 for 5 div of deflec- c. Set the time-base unit for a sweep rate of 10 nsldiv.
tion. See Fig. 4-6 for the adjustment location. Adjust the time-base triggering control for a stable display.
e. Press the POWER switch to turn off the oscilloscope
d. CHECK-For two 5 ns markers per division over the
and interchange the vertical amplifier and the time-base unit Center eight graticule divisions of the display (position as
in their respective compartments. Pull the POWER switch necessary).
on.
REV MAY 1982