Performance Check—2465B/2467B Service
NOTE
This procedure need only be performed if the 50 ns
reading from step 1 above was outside the limits
listed in Table 4-11.
a. Connect Primary leveled sine-wave generator (item 2)
to CH 1 OR X input of the oscilloscope under test and the
test oscilloscope using a T-connector.
j.
CHECK—NEG-PK reading is 0.0 mV ± 5 mV.
k. Disconnect fast rise Generator.
b. Set frequency for 20 MHz.
c. Adjust generator output amplitude for at least a
200 mV peak- peak display on the test oscilloscope.
d.
Using the counter in the test oscilloscope, measure
period of signal.
e. Press MEASURE then select FREQ on the oscillo-
scope under test.
f. Verify that the oscilloscope under test reads a period
that is within o.9% + 0-5 ns of the value measured by the
counter on the test oscilloscope.
3. Verify Positive and Negative Peak Volts
Measurements
a. Set CH 1 OR X input coupling to 1 Mfi.
b. Set CH 1 VOLTS/DIV to 50 mV.
c. Set A SEC/DIV to 500 ^s.
d.
Connect the + fast rise output of the Calibration
Generator to the CH 1 OR X input via a 50-fi BNC cable.
e. Adjust Calibration Generator amplitude for a 4
divi-
sion 1 kHz display.
f. Measure VOLTS by pressing MEASURE and then
selecting VOLTS.
g.
CHECK—POS-PK reading is 0.0 mV ± 5 mV.
h. Connect the - fast rise output of the Calibration
Generator to the CH 1 OR X input via a 50-fi BNC cable.
4. Verify Average and Peak-Peak Volts
Measurements
a. Connect standard-amplitude calibration Generator to
CH 1 OR X input via a BNC T-Connector (item 8) and a
50-fi cable.
b. For each entry in Table 4-12:
1.
Measure VOLTS by pressing MEASURE and
then selecting VOLTS.
2.
Verify PK-PK reading is within limits specified.
3. Connect the BNC T-Connector via a 50-fi cable
and BNC to dual banana adapter to the Digital
Multimeter (item 19).
4.
Select appropriate DMM voltage range and note
voltage reading.
5. Verify AVG reading is within limits specified.
NOTE
To insure accurate
VOL
T measurements it
is necessary to disconnect the DMM input
from the BNC T-Connector at the
standard-amplitude Generator output
PRIOR to selecting a VOLTS measure-
ment. Re-connect meter when VOLTS
measurements are completed.
c. Disconnect calibration generator from CH 1 OR X
input and connect to CH 2 OR Y input.
d.
Select only CH 2 for display.
e. Repeat step b for CH 2.
i. Repeats steps e and f for - fast rise connected to f. Disconnect test setup.
CH 1.
4-28
REV OCT
1996
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