Tektronix 5441 Instruction Manual page 82

Adjustment Procedure-5441/~5441
E. HORIZONTAL SYSTEM
Equipment Required
Calibration fixture (Pulser)
Time-mark generator
Time-base unit
42-inch bnc cable
Amplifier unit Screwdriver
NOTE
2. Adjust Horizontal Gain
The calibration fixture is used for the horizontal sys- a. Set the Test switch of the Pulser to Vert or Horiz
tem adjustment procedure. When a different amplifier Gain.
plug-in is used to verify horizontal specifications, the
amplifier frequency must be considered. An alternate
procedure is provided when the 5A48 is substituted
b. Position the display with the Pulser Position control to
for the calibration fixture plug-in unit. align the bright center trace of the display with the center
vertical graticule line.
Control Settings
Pulser
Position
Amplitude
Test Switch
Rep Rate
Midrange
Midrange
Common Mode
1 MHz
Time-Base Unit
Main Triggering
+
Slope,
Auto Trig
Trig Source Left
Position As desired
Swp Mag XI
Main SecIDiv 1 ms
Display Mode Main Swp
1. Adjust Horizontal Centering
c. CHECK-That the center seven traces coincide with
the respective vertical graticule lines, one trace per division,
k
0.25 div.
d. ADJUST-Horizontal Gain R212 for 6 div of deflec-
tion over the center seven vertical graticule lines.
e. Press the POWER switch to turn off the oscilloscope
and interchange the Pulser and the time-base unit in their
respective compartments. Pull the POWER switch on.
3. Adjust 10 ns Timing
NOTE
A 5842 time-base or a time-base having a 10 ns
sweep must be used.
a. Pull the POWER switch to turn on the oscilloscope
and check for a vertical trace over the entire graticule area.
a. Set the Pulser Test switch to Aux In.
b. CHECK-That the displayed trace is within 0.5 div of
b. Connect the time-mark generator to the Aux In con-
the center vertical graticule line.
nector of the Pulser with a 42-inch bnc cable.
c. ADJUST-Horizontal Centering R222 to position the
c. Set the time-mark generator for 10 ns markers. Set
trace to center vertical graticule line. See Fig. 4-6 for the
the Pulser Amplitude control so the markers are at least five
adjustment location. divisions in amplitude.
REV MAY 1982