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Performance Tests
CSA 803A Service Manual
4Ć25
This procedure shows the setups and lists the steps to check the vertical
accuracy of the CSA 803A.
Setup to Check Vertical Gain
CSA 803A
Prec. Voltage Source
50 W Coaxial Cable
Calibration Head
DIRECT Input
Procedure to Check Vertical Gain
ăStep 1:ăInstall a Calibration Head (067-1413-00) into the position
shown in the setup diagram (CHĂ1/CHĂ2 slot). If the unit is in Standby
mode, set the power switch to ON. Set the Precision Voltage Source to
0 V and connect it to Channel 2 of the Calibration Head.
NOTE
If powering up from a cold start, the diagnostics will report an error
using the Calibration Head. The report will indicate a Time Base
error. To clear this, exit the diagnostics. Then, ignore the subseĆ
quent time base calibration failure notice and continue with the
following steps.
ăStep 2:ăInitialize the mainframe as follows:
UTILITY button press...........................................
Initialize (in major menu) touch..............................
Initialize (in verification popĆup menu) touch..................
ăStep 3:ăTrigger the CSA 803A as follows:
TRIGGER button press.........................................
Source (in major menu) touch...............................
Internal Clock (in popĆup menu) touch.......................
Vertical Accuracy