Tektronix 5441 Instruction Manual page 70

Adjustment Procedure-5441/~5441
ADJUSTMENT
A. POWER SUPPLY AND CALIBRATOR
1
~ ~ u i ~ r n e n t Required
Time-base unit Dc voltmeter wltest leads (HV test)
Amplifier unit Screwdriver
Digital voltmeter
Install Plug-in Units
Install an amplifier unit in the left vertical compartment
and the time-base unit in the horizontal compartment.
Control Settings
5441 Oscilloscope
INTENSITY Counterclockwise (off)
FOCUS Midrange
GRAT ILLUM As desired
READOUT INTENS Midrange
POWER On
1. Adjust -30 V Power Supply
a. Remove the bottom dust cover of the 5441 to gain
access to the LV power supply circuit board.
Fig. 4-1. Location of power supply test points and
-30
V and
+
30
V adjustments.
b. Connect the digital voltmeter between the -30 V test
point on the LV power supply circuit board and chassis
ground. See Fig. 4-1 for voltage test point locations.
2. Adjust +30 V Power Supply
a. Connect the digital voltmeter between the +30 V test
c. CHECK-For a meter reading of -29.925 V to point on the LV power supply circuit board and chassis
-30.075 V. ground. See Fig. 4-1 for the voltage test point location.
NOTE b. CHECK-For a meter reading of +29.925 V to
If the -30 V supply is within the specified tolerance,
+30.075 V.
proceed with step 2. If the
-
30 V adjustment is to be
made, all circuits will be affected and the entire power
supply adjustment procedure should be performed to
NOTE
verify the accuracy of the supplies.
If the +30 V supply is within the specified tolerance,
proceed with step 3. If the +30 V adjustment is to be
made, all circuits will be affected and the entire power
d. ADJUST--30 Adj R950 for a meter reading of supply adjustment procedure should be performed to
-30 V. See Fig. 4-1 for the adjustment location. verify the accuracy of the supplies.
REV MAY 1982