Performance Check—2465B/2467B Service
I. Repeat parts c through i for CH 2.
m. Disconnect the test setup.
3. Check CRT Writing Rate of 2467B ONLY.
a. Set:
CH 1 VOLTS/DIV
CH 2 VOLTS/DIV
BW LIMIT
CH 1
CH 2
AV
A SEC/DIV
TRIGGER MODE
2mV
2mV
On
On
Off
On (press and release for a
AV readout)
1 ms (knob in)
AUTO
CH 1 VOLTS/DIV
CH 1 VERTICAL MODE
CH 2 VERTICAL MODE
A SEC/DIV
DLY
B SEC/DIV
CH 1 Input Coupling
B TRIGGER MODE
A TRIGGER MODE
X10 MAG
INTENSITY
READOUT INTEN
50 mV
On
Off
10 ms
0.0000 ms
20 ns(knob in)
50
Q
DC
RUN AFT DLY
AUTO LVL
ON
CW (full)
OFF (centered)
NOTE
The instrument must have had at least 20
minutes warmup prior to performing the following
steps.
b. Momentarily press and hold both the CH 1 and CH 2
upper Input Coupling buttons until a moving dot display
replaces the normal signal. This performs a DC Balance of
CH 1 and CH 2 and the readout indicates "DC BALANCE
IN PROGRESS".
b. Connect the output of the Primary Leveled Sine-
Wave Generator to the CH 1 OR X input connector via a
50 fl BNC cable.
c. When the signal and readout displays automatically
return to normal, set the CH 1 and CH 2 Input Coupling to
1 Mil DC.
c. Set the generator for an 8 division display at
158 MHz.
d.
Connect the Calibration Generator to the CH 1 OR X
input connector via a 50 P. BNC cable. Do not use a
termination.
d.
Press INIT@50%.
e. VERIFY—All parts of the flashing sine waves are
visible.
Typical working environments illuminate the CRT
faceplate with about 20 foot-candles.
e. CHECK—CH 1 and CH 2 VOLTS/DIV,
TRIGGER LEVEL readout accuracies as follows:
AV, and
1.
Set VOLTS/DIV control to the first position listed
in Table 4-2.
f. Disconnect the test setup.
4. Check CH 1 and CH 2 VOLTS/DIV, CH 2
INVERT, AV and TRIGGER LEVEL Readout
Accuracies, Variable VOLTS/DIV, Vertical
Linearity, and ADD.
a. Set:
CH 1 Input Coupling
CH 2 Input Coupling
1 MfiDC
1 MfiDC
2.
Set the Calibration Generator STD AMPLITUDE
output level to the corresponding Standard
Amplitude Input Level in Table 4-2.
NOTE
To properly verify TRIGGER LEVEL
Readout Accuracy, the Calibration
Generator's STD AMPLITUDE output must
have rising and falling transition times
(10% to 90%) > 20 ns. No overshoot
should appear on the waveform.
NOTE
Select channels to set VOLTS/DIV.
3. Verify that the generator output meets the
requirements noted above.
4-6
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