Additional Verifications And Checks - Tektronix 2432 Service Manual

Performance Check and Functional Verification Procedure
2432 Service
ADDITIONAL VERIFICATIONS AND CHECKS
NOTE
Items 20 through 23 are only needed to check instruments equipped with the Video Option (Option 05). Item 19
is needed to check both the standard instrument and the option 5 instrument.
EQUIPMENT REQUIRED (see Table 4-1)
Calibration Generator (Item 3)
Digital Voltmeter (DMM) (Item 7)
GPIB Controller (Item 8)
GPIB Interface Cable (Item 9)
Coaxial Cable (Qty 2) (Item 10)
Termination (Item 12)
1 OX Attenuator (Qty 2) (Item 13)
1. Check Gain Match Between NORMAL and Save
Acquisition Modes.
a. Recall the Initial Front-Panel Setup, labeled "FPNL"
(see step i in "INITIAL SETUP" at the start of this pro-
cedure). Make the following changes to the front-panel
setup:
Select CH1 COUPLING/INVERT
Set:
son
ON:OFF OFF
Select STORAGE ACQUIRE
Set: AVG On
Select VERTICAL MODE
Set: CH 2 Off
b. Connect the Calibration Generator's STD AMPLI-
TUDE output to the CH1 input connector. Set the
generator's output level to .5 V and center the displayed
square wave on screen.
c. Select CURSOR FUNCTION and set VOL TS on.
d. Using the CURSOR/DELAY control, align the
enabled cursor (segmented) to the top of the displayed
square wave.
1 X Probe (Item 17)
BNC Female-to-Dual Adapter (Item 19)
Sine-Wave Oscillator (Item 20)
Pulse Generator (Item 21)
Sync and Linearity Test Generator (Item 22)
Coaxial Cable (Qty 2) (Item 23)
Termination (Qty 2) (Item 24)
e. Press CURSOR SELECT to enable the alternate cur-
sor (it will change from solid to segmented). Align the
cursor to the bottom of the square wave.
f. Note the CURSOR VOL TS readout value.
g. Select STORAGE SAVE to save the display. Realign
the cursors to the saved square wave if required.
h. CHECK-That the CURSOR VOL TS readout value
is within 12 mV of the value noted in part f.
i. Disconnect the test setup.
2. Verify the Cursor Units and Functions.
NOTE
This check VERIFIES the functionality of the cur-
sors. The accuracy of the cursor readout is checked
in the Vertical and Horizontal Systems subsections
of this procedure.
4-29